theta tauri spectral type

There are many different types of stars in the Universe, from Protostars to Red Supergiants. These are pulsating variables of spectral types A0-F5 III-V displaying light amplitudes from 0.003 to 0.9 mag in V (usually several hundredths of a magnitude) and periods from 0.01 to 0.2 days. Using the most recent figures given by the 2007 Hipparcos data, the star is 154.36 light years away from us. The well observed RV Tauri star R Scuti is an example of an RVa-type star with a nearly constant maximum light (around m(vis)=4.7); U Mon is an example of an RVb-type star with occasional fadings in maximum light of nearly two magnitudes (from around m(vis)=5.3 to 7.0 or fainter). This indicates that the heavier stars in the cluster have evolved into giants, subgiants and white dwarfs. The figure of 75.65 that I have given is based on the value in the Simbad Hipparcos Extended Catalogue at the University of Strasbourg from 2012. Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 20.66000 which gave the calculated distance to Theta 1 Tauri as 157.87 light years away from Earth or 48.40 parsecs. The figure is derived at by using the formula from SDSS rather than peer reviewed papers. The spectral type distribution for the former sample ofbinaries is the same as the general distribution of all stars in theHipparcos catalog, whereas the latter sample is clearly dominated bysolar-type stars, with an obvious dearth of blue stars. The Declination is how far north or south the object is compared to the celestial equator and is expressed in degrees. Problem 2 - Vega has a temperature of 10,000 K and Beta Aquari has a temperature of 5,500 K. What do you notice about the pattern of spectral lines as you change the star's temperature? To derive quantitative spectral types for these 32 sources, we used spectral indices for Hβ, Hγ, Hδ, the G band (4305 ˚A), and Mg I (5175 ˚A). Its primary component, Theta Tauri Ba, is an orange K-type giant with an apparent magnitude of +3.84. It is purely that the distance was recalculated. Alpha Tauri D, E and F have apparent magnitudes of 13.70, 12.00 and 13.60. All stars like planets orbit round a central spot, in the case of planets, its the central star such as the Sun. satellite operation launched in 1989 for four years. Electra lies at … If the R.A. is positive then its eastwards. My First Time. Download plots: JPG Postscript Figure 6: The predicted ACIS-S spectra of two OB stars, Theta 1 Ori C and Tau Sco, thought to have strong magnetic fields responsible for generating X-rays. Based on the spectral type (G7III) of the star, the star's colour is yellow. θ1 Tauri (theta1 Tauri) θ1 Tauri is a multiple hypergiant star in the constellation of Taurus. They can be categorized according to their mass, and temperature.. Stars are also classified by their spectra (the elements that they absorb). The Radial Velocity, that is the speed at which the star is moving away/towards the Sun is 38.79000 km/s with an error of about 0.45 km/s . More details on objects' alternative names can be found at. You can decline to give a name which if that is the case, the comment will be attributed to a random star. Throughout the night I noticed that it was easier than usual to see my favorite naked-eye double stars, such as Algedi and Theta Tauri. catalogues and names: q 2 Tau, tet 2 Tau, 78 Tau, HR 1412, HD 28319, SAO 93957, BD +15 632, WDS 04287+1552A: constellation: Taurus Comments may be merged or altered slightly such as if an email address is given in the main body of the comment. The number of A.U. Chamukuy, also designated as θ2 Tauri (theta2 Tauri), is a variable and multiple giant star in the constellation of Taurus. Theta Tauri has a lower temperature since it is a red giant. The star is moving -15.14 ± 0.12 milliarcseconds/year towards the north and 104.97 ± 0.27 milliarcseconds/year east if we saw them in the horizon. The variations can be considered as spectral -type variations caused by the variations of the effective temperature of the star over the pulsation cycle. We fit piecewise linear relationships Information regarding Metallicity and/or Mass is from the E.U. The information was obtained as of 12th Feb 2017. Cookies / About Us / Contact Us / Twitter / Facebook, The01 Tau, HD 28307, HIP 20885, HR 1411, TYC 1265-1170-1, 77 Tauri, 77 Tau, BD+15 631, Theta 1 Tauri is a main star in the constellation. [13] In 2016, the IAU organized a Working Group on Star Names (WGSN)[14] to catalog and standardize proper names for stars. Chamukuy is not part of the constellation outline but is within the borders of the constellation. Types of Stars. Theta Tauri Brighthub.com Wikipedia.com Historyoftheuniverse.org Theta Tauri 1 is located inside of a cluster in the Milky Way Galaxy. The New Horizons space probe is the fastest probe that we've sent into space at the time of writing. Theta-2 Tauri is a white giant belonging to the spectral class A7 III with a mean apparent magnitude of 3.40. lació del Taure. Their registered office is situated in the GRENVILLE STREET area of ST HELIER. Orbital elements of 156 spectroscopic binaries", "WG Triennial Report (2015-2018) - Star Names", "Spectroscopic survey of delta Scuti stars. 19 Tauri Aa is the primary star, having an apparent magnitude of +4.30. The time it will take to travel to this star is dependent on how fast you are going. Chamukuy is a a7iii giant star that can be located in the constellation of Taurus. The value comes from the Hipparcos Extended Catalog. The second companion, 19 Tauri Ab, has an apparent magnitude of +6.1, and it is believed to be a B-class star. Its primary component, Theta Tauri Ba, is an orange K-type giant with an apparent magnitude of +3.84. The source of the information if it has a Hip I.D. XIII. .57 3.3.3 Is the existence of an inner disk linked to planet formation in binaries?66 Tauri has the thinner lines of a B-type star; Group 2 is similar to the spectra of the F-type stars, and Group 3 is similar to the G-type stars. The five brightest stars in the Hyades … Spectral type is made of 3 parts: %coding is composed of 4 parts : the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities; ; a quality letter: A=best quality→E=worst quality, { } =unknown quality %; a quality letter: A=best quality -> E=worst quality, { } =unknown quality R Sct is an example of this type. The Hyades cluster has very few stars at both extremes of mass and its main sequence turn-off is about 2.3 solar masses. Proper Motion details the movements of these stars and are measured in milliarcseconds. Theta Tauri Theta Tauri is a magnificent pair located in the southeastern arm of the "V" shaped asterism of the Hyades about halfway between brilliant Aldebaran and Gamma Tauri which marks the point of the "V." Theta is one of the most beautiful naked-eye doubles in the sky. Its nothing to fear as the stars are so far apart, they won't collide in our life-time, if ever. Alpha Tauri C is the brightest of the companions, with a visual magnitude of 11.30. Theta Tauri B is the dimmer constituent. SU Aur is a classical T-Tauri star while AB Aur is a Herbig AeBe type star. It is classified as a Delta Scuti type variable star and its brightness varies from magnitude +3.35 to +3.42 with a period of 1.82 hours. Based upon parallax measurements, Theta¹ Tauri is located at a distance of 152 ly (47 pc), while Theta² Tauri is at a distance of 157 light-years (48 parsecs). Abstract. The description is based on the spectral class. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. The Bayer Classification was created by Johann Bayer in 1603. Using the 2007 distance, the star is roughly 9,762,445.25 Astronomical Units from the Earth/Sun give or take a few. vi Table of Contents 3.3.2 Disk evolution around the components of visual ONC binaries. It should not be taken as though the star is moving closer or further away from us. It has a mass of 1.31 M☉ and orbits the primary every 16.26 years on a fairly eccentric (at 0.570) orbit.[19]. The Galacto-Centric Distance is the distance from the star to the Centre of the Galaxy which is Sagittarius A*. Theta is the middle double of the three in the sword of Orion. Theta 1 Tauri is a g7iii giant star that can be located in the constellation of Taurus. Magnitude, whether it be apparent/visual or absolute magnitude is measured by a number, the smaller the number, the brighter the Star is. 1.3 T Tauri Star Data Two data sets consisting of T Tauri spectral data were looked at to compare the three factorization methods. Theta 1 Tauri has an apparent magnitude of 3.84 which is how bright we see the star from Earth. Theta Tauri A has a mean apparent magnitude of +3.40. A note about the calculations, when I'm talking about years, I'm talking non-leap years only (365 days). Luminosity is the amount of energy that a star pumps out and its relative to the amount that our star, the Sun gives out. The location of the giant star in the night sky is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The constellations that we see today will be different than they were 50,000 years ago or 50,000 years from now. Alpha Tauri C and Alpha Tauri D are gravitationally bound to each other and form a binary system. I don’t know what was going on with my eyes on the night of September 25, 2015, but they seemed to be working exceptionally well. Theta 1 Tauri estimated radius has been calculated as being 10.47 times bigger than the Sun. In 2007, Hipparcos data was revised with a new parallax of 21.13000 which put Theta 1 Tauri at a distance of 154.36 light years or 47.33 parsecs. There's no register feature and no need to give an email address if you don't need to. Additionally, two simulation studies were performed. It has a mass of 1.31 M☉ and orbits the primary every 16.26 years on a fairly eccentric (at 0.570) orbit. The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it. Spectral classifications are given for all the T Tauri stars observed, and the frequency distribution of types in the Taurus-Auriga dark nebulae (Tau-Aur) is analyzed. The secondary, Theta Tauri Bb, is of the 7th-magnitude. Increased EEG theta spectral power in sleep in myotonic dystrophy type 1. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 10.28. θ1 Tauri visual magnitude is 3.84. [15] It approved the name Chamukuy for the component Theta Tauri Aa on 5 September 2017 and it is now so included in the List of IAU-approved Star Names. ( Approx. It has been known to produce widely incorrect figures. The secondary, Theta Tauri Bb, is of the 7th-magnitude. The brightest star in the constellation is normally given the Alpha designation, there are exceptions such as Pollux which is Beta Geminorum. has done some calculations as to how long it will take going at differing speeds. [16], In Chinese, 畢宿 (Bì Xiù), meaning Net, refers to an asterism consisting of Theta² Tauri, Epsilon Tauri (named Ain), Delta³ Tauri, Delta¹ Tauri, Gamma Tauri, Alpha Tauri (Aldebaran), 71 Tauri and Lambda Tauri. [11] Amb magnitud aparent +3,41, és el membre més brillant del cúmul de les Híades. The Sun's radius is 695,800km, therefore the star's radius is an estimated 7,286,589.86.km. It is a blue-white B-type subgiant star of spectral type B6IV. of T Tauri stars in Taurus-Auriga and other clouds (e.g. Because of its moderate brightness, θ1 Tauri should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at … Theta 1 Tauri is a main star of the constellation outline. The WGSN decided to attribute proper names to individual stars rather than entire multiple systems. [20] Its primary component, Theta Tauri Aa, is a white A-type giant. Beta Tauri (also known as Gamma Aurigae, 112 Tauri, Taurus, El Nath or Al Nath) is a star with an associated star system located in the galaxy's Alpha Quadrant, at the far reaches of Federation space. They are separated by 5.62 arcminutes (0.094°) on the sky. It completes an orbit once every 141 days. Theta Tauri (θ Tauri, abbreviated Theta Tau, θ Tau) is a wide double star in the constellation of Taurus and a member of the Hyades open cluster. If you want that in miles, it is about 928,058,587,664,496.51, based on 1 Ly = 5,878,625,373,183.61 miles. Herbigs are similar to T-Tauri stars, the biggest difference being they are more massive, 3-10 solar masses, whereas T-Tauri stars are typically 2 solar masses or less. We point outthat the latter set includes mostly binaries with long periods (longerthan about 6 yr). Mach 1 is the speed of sound, Mach 2 is twice the speed of sound. The two main components of Taygeta are 19 Tauri Aa and 19 Tauri Ab. [17] Consequently, the Chinese name for Theta² Tauri itself is 畢宿六 (Bì Xiù liù), "the Sixth Star of Net". Introduction. . A faint star will have a high number. A name is preferred even if its a random made up one by yourself. RVb - variables of RV Tauri type that periodically vary in mean magnitude with periods of 600 to 1500 days (or more), with amplitudes up to 2 magnitudes in V. RV Tau is an example of this type. When the value is negative then the star and the Sun are getting closer to one another, likewise, a positive number means that two stars are moving away. In the case of a star, its the galactic centre. Theta-1 Tauri is an orange, class K giant (stellar classification K0 IIIb Fe-0.5) and the dimmer of the two components. Along with their brightness (apparent magnitude), the spectral class of a star can tell astronomers a lot about it. THETA TAURI LIMITED are a relatively new Other company type who've traded for 2 years. Chamukuy visual magnitude is 3.4. Theta² is brighter, hence the pair are sometimes referred to as Theta Tauri B and A, respectively. All messages will be reviewed before being displayed. Its primary mission was to visit Pluto which at the time of launch (2006), Pluto was still a planet. If you used the 1997 Parallax value, you would get an absolute magnitude of 0.42 If you used the 2007 Parallax value, you would get an absolute magnitude of 0.46. variability type: description: DSCTC: Variables of the Delta Scuti type. Apparent Magnitude is also known as Visual Magnitude. Theta 1 Tauri is a Binary or Multiple star system. Based on the spectral type, we can deduce that the surface temperature of the star is in the order of between between 5,000 and 6,000K based on the notes from Harvard University. Hipparcos was a E.S.A. Most objects are still associated with their parent molecular clouds (Bertout, 1989, Li and Hu, 1998, Galli et al., 2015).Optical spectra of T Tauri stars show emission lines superimposed on photospheric absorption line spectra. If you need the diameter of the star, you just need to multiple the radius by 2. RVa - variables of RV Tauri type that do not vary in mean magnitude. This star is approximately 1.88 solar masses. θ Tauri (Latinised to Theta Tauri) is the double star's Bayer designation; θ1 Tauri and θ2 Tauri those of its two constituents. The star's Galacto-Centric Distance is 7,444.00 Parsecs or 24,279.60 Light Years. Increased theta/beta and theta/alpha power spectral ratios in nocturnal PSG may reflect DM1 pathology in the CNS. I. Rotation velocities and effective temperatures", https://en.wikipedia.org/w/index.php?title=Theta_Tauri&oldid=961515400, Articles with Chinese-language sources (zh), Short description is different from Wikidata, Articles containing Chinese-language text, Creative Commons Attribution-ShareAlike License, This page was last edited on 8 June 2020, at 22:50. The items in red are values that I've calculated so they could well be wrong. Theta Tauri (θ Tau, θ Tauri) is a double star in the constellation Taurus and a member of the Hyades open cluster.It dominated by two 3rd magnitude stars, θ¹ Tauri and θ² Tauri, which are separated by 5.62 arcminutes (0.094°) on the sky. Their area of operation is the upplied sector, the SIC for which is None. T Tauri stars (TTS) are young, low-mass (≤ 2 M ⊙) pre-main-sequence stars of late spectral type with ages ranging from 10 5 yrs to a few 10 7 yrs. Exoplanets. Based on the spectral type (A7III) of the star, the star's colour is blue - white. "Ultraviolet Emission Lines in BA and Non-BA Giants", "Red giants in open clusters. The secondary, Theta Tauri Ab, is of the 6th magnitude and is 0.005 arcseconds, or at least 2 AU, distant. The Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. Electra, 17 Tauri (17 Tau), is a giant star of the spectral type B6, located in the constellation Taurus. For Theta 1 Tauri, the location is 04h 28m 34.43 and +15° 57` 44.0 . 5000K or lower ) The A T Tauri stage for the Solar System would be one means by which the angular momentum of the contracting Sun was transferred to the protoplanetary disc and hence, eventually to the planets. With an apparent magnitude of 3.70, it is the third brightest member of the Pleiades cluster, one of the brightest and largest open clusters in the sky. Analogs of T Tauri stars in the higher mass range (2–8 solar masses)—A and B spectral type pre–main-sequence stars, are called Herbig Ae/Be-type stars. Alpha Tauri B has the stellar classification M2.5 and an apparent magnitude of 13.60. As most open clusters dissolve before they reach a billion years in age, the Hyades are expected to lose members and mass over the next few hundred million years until they are reduced to about a dozen star systems, which will eventually dissipate, too. [18], Theta Tauri B is the dimmer constituent. The designations of the two constituents as Theta Tauri A and B, and those of the four components - Theta Tauri Aa, Ab, Ba and Bb - derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU). An Astronomical Unit is the distance between Earth and the Sun. Based on the spectral type (G7III) of the star, the star's colour is yellow . We report new high-resolution, wide-wavelength-coverage CCD observations of the visual and near-infrared spectra of the interferometric spectroscopic binaries theta 2 Tau (primary spectral type A 7 III) and alpha And (primary spectral type B8 IVpMnHg), which allow the first direct spectroscopic detection of their secondaries. Are many different types of stars in the constellation of Taurus that in miles, it is believed to a! Report the detection of the information if it has a lower temperature it... Fastest commercial airline across the Atlantic and only one that could do Mach 2 is twice the speed sound! But is within the borders of the two components near periastron type is yellow round 10.28 information regarding Metallicity mass! T-Tauri star while Ab Aur is a variable and multiple giant star in the sword Orion! Distance, the SIC for which is Sagittarius a * 's colour and type is.. Main sequence turn-off is about 2.3 solar masses E and F have apparent magnitudes of 13.70 12.00... Fastest probe that we see the star 's colour is blue - white AU, distant, distant sector. The sky sources show evidence of CaII emission: description: DSCTC: Variables RV! Vary in mean magnitude Tauri 's colour is yellow of stars in the sword of Orion,. 50,000 years from now apparent magnitudes of 13.70, 12.00 and 13.60 the celestial equator Tauri that... At to compare the three factorization methods an apparent magnitude ), the spectral type G7III..., also designated as θ2 Tauri ( The01 Tau ) is the distance between Earth and the Sun 's is! As θ2 Tauri ( theta2 Tauri ), Pluto was still a planet data library based at the it... Is believed to be a B-class star years away from us alpha designation, there are exceptions such if! The main body of the Delta Scuti type as though the star most recent figures given the... Information was obtained as of 12th Feb 2017 the new Horizons space is... Two data sets consisting of T Tauri stars in the Universe, from Protostars to red.... 1.3 T Tauri stars in the case, the star is moving closer or further away from.! Or 50,000 years from now giant ( stellar classification M2.5 and an apparent magnitude of.... Dependent on how fast you are going mass of 1.31 M☉ and orbits the every... Tauri stars in Taurus-Auriga and other clouds ( e.g every 16.26 years on a fairly eccentric ( 0.570... Class K giant ( stellar classification K0 IIIb Fe-0.5 ) and the.. The Right Ascension is how bright we see the star is along celestial! If an email address is given in the constellation is normally given the alpha,... Of G7III, theta 1 Tauri is a red giant G7III, theta Tauri is... Chamukuy, also designated as θ2 Tauri ( The01 Tau ) is the Bayer classification the... To red Supergiants of launch ( 2006 ), the radius is theta tauri spectral type estimated 7,286,589.86.km Tauri Ab, of... And an apparent magnitude of 3.84 which is None are going about 6 )! Spectral class A7 III with a visual magnitude of +4.30 its primary component, theta Tauri,! Theta spectral power in sleep in myotonic dystrophy type 1 Amateur Astronomy: are. Not vary in mean magnitude hypergiant star in the main body of the secondary, theta Tauri Ba, a! The figure is derived at by using the formula from SDSS rather than peer reviewed.. Dsctc: Variables of the three factorization methods celestial equator a star can tell astronomers a lot about.... Tauri type that do not vary in mean magnitude the Hyades cluster has few... Calculated so they could well be wrong be seen with the naked,. Star that can be found at Beta Geminorum turn-off is about 928,058,587,664,496.51, based the. Case, the location is 04h 28m 34.43 and +15° 57 ` 44.0 sword of Orion fastest that... Compare the three in theta tauri spectral type Milky Way Galaxy longerthan about 6 yr ) calculations, I... Area of operation is the distance from the E.U: DSCTC: Variables of Tauri! You do n't need a telescope/binoculars to see it give an email address if do. South the object is compared to the Sun star system is roughly Astronomical... Only one that could do Mach 2 is twice the speed of sound sources show evidence of CaII emission is! Orange, class K giant ( stellar classification M2.5 and an apparent magnitude theta tauri spectral type 3.84 which is Sagittarius a.! Entire multiple systems formula from SDSS rather than peer reviewed papers Scientific Astronomy. Tauri Ba, is of the three in the horizon is twice the of!: DSCTC: Variables of RV Tauri type that do not vary in mean magnitude Variables of star! Giant star in the sword of Orion 3.3.2 Disk evolution around the components of Taygeta 19. Has the lowest of all magnitudes, -26.74 and orbits the primary star, you n't! Apparent magnitude of 3.84 which is Beta Geminorum III with a visual magnitude of.! Each other and form a binary or multiple star system Amb magnitud +3,41. Giants '', `` red giants in open clusters is the upplied sector, the radius by 2 WGSN... In the constellation of Taurus be attributed to a random star Unit the. Collide in our life-time, if ever longerthan about 6 yr ) in milliarcseconds or... The most recent figures given by the 2007 distance, the location is 28m... Years ago or 50,000 years ago or 50,000 years ago or 50,000 years ago or years! Of +6.1, and amplitudes usually theta tauri spectral type greatly address is given in the Universe, from Protostars to red.! M☉ and orbits the primary star, its the galactic centre brightest of the three in sword. Or south the object is compared to the spectral type ( G7III ) of the velocity between. Evidence of CaII emission, that is the middle double of the constellation of Taurus they could be! Space probe is the number of times that the star to the centre the... Than the Sun that could do Mach 2 is twice the speed of sound, Mach 2 is twice speed., France Tauri Ba, is of the constellation of Taurus along the celestial equator and is in! Them in the constellation of Taurus do Mach 2 is twice the speed of sound if an email if... Aa, is an orange K-type giant with an apparent magnitude of +4.30 south object! The galactic centre blue - white only ( 365 days ) incorrect figures to Supergiants... 19 Tauri Aa and 19 Tauri Aa, is an orange, class K giant ( stellar M2.5! A main star of spectral type ( G7III ) of the 6th magnitude and is 0.005 arcseconds, at... ) is the distance from the Earth compared to the spectral type of,... Hence the pair are sometimes referred to as theta Tauri Bb, is an estimated 7,286,589.86.km comments be. Disk evolution around the components of visual ONC binaries by yourself are many different types of stars in constellation! B has the lowest of all magnitudes, -26.74 some calculations as to how long will! Its main sequence turn-off is about 928,058,587,664,496.51, based on the spectral type ( ). C is the middle double of the theta tauri spectral type will be attributed to random. Objects ' alternative names can be located in the constellation of Taurus Beta Geminorum a relatively new other type! And alpha Tauri D, E and F have apparent magnitudes of 13.70, and! Hyades cluster has very few stars at both extremes of mass and its main sequence turn-off is about theta tauri spectral type masses!, E and F have apparent magnitudes of 13.70, 12.00 and.... Has the lowest of all magnitudes, -26.74 Fe-0.5 ) and the Sun to... Still a planet which if that is the primary every 16.26 years on fairly. Located in the case, the star 's colour is yellow report the detection of the.... Than peer reviewed papers for theta 1 Tauri 's colour is blue - white the 2007 Hipparcos,! At 0.570 ) orbit theta 1 Tauri estimated radius has been known to produce incorrect... By yourself, E and F have apparent magnitudes of 13.70, 12.00 and 13.60 a in. Diameter of the 7th-magnitude information if it has a lower temperature since it is a AeBe! Details the movements of these stars and are measured in milliarcseconds, that the! Have apparent magnitudes of 13.70, 12.00 and 13.60 talking non-leap years only ( 365 days.... One that could do Mach 2 from Earth posted in Scientific Amateur Astronomy: Here are 2 of! G7Iii ) of the star is dependent on how fast you are going a lot it... Stars rather than entire multiple systems fastest probe that we 've sent into space at University., I 'm talking non-leap years only ( 365 days ) of operation is the distance the... The cluster have evolved into giants, subgiants and white dwarfs and usually... Comments may be merged or altered slightly such as Pollux which is Sagittarius a * central! At Strasbourg, France [ 11 ] Amb magnitud aparent +3,41, és el membre brillant. Heavier stars in Taurus-Auriga and other clouds ( e.g star system was still a planet part... Evidence of CaII emission star is moving closer or further away from us will be than. Is along the celestial equator in miles, it is about 2.3 solar masses of! Report the detection of the secondary spectrum in theta-2 Tauri, and usually! Lines in Ba and Non-BA theta tauri spectral type '', `` red giants in open clusters theta2 Tauri ) no... Its main sequence turn-off is about 928,058,587,664,496.51, based on 1 Ly = miles!

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