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GV Tauri

Coordinates:Sky map04h29m23.7315s,+24° 33′ 00.2160″
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GV Tauri

Alight curvefor GV Tauri, plotted fromKeplerdata[1]
Observation data
EpochJ2000EquinoxJ2000
Constellation Taurus
GV Tauri A
Right ascension 04h29m23.71056s[2]
Declination +24° 32′ 58.6176″[2]
GV Tauri B
Right ascension 04h29m23.6868s[3]
Declination +24° 33′ 01.1160″[3]
Characteristics
GV Tauri A
Evolutionary stage pre-main-sequence star
Spectral type K3[4]
Apparent magnitude(K) 10.872[2]
Apparent magnitude(g) 16.282[5]
Variable type T Tau
GV Tauri B
Spectral type late G to early K[4]
Apparent magnitude(K) 10.171[3]
Astrometry
GV Tauri A
Proper motion(μ)RA:8.0±0.4mas/yr[5]
Dec.:−26.7±0.3mas/yr[5]
Parallax(π)7.01 ± 0.34mas[5]
Distance470 ± 20ly
(143 ± 7pc)
GV Tauri B
Position (relative to GV Tauri A)
ComponentGV Tauri B
Angular distance1.2[6]
Projected separation170AU
Details[4]
GV Tauri A
Mass1.8M
Luminosity2.3L
Surface gravity(logg)4.0cgs
Temperature4800±200K
Age0.5[6]Myr
GV Tauri B
Luminosity114L
Age0.5[6]Myr
Other designations
2MASSJ04292373+2433002, Haro 6-10, TIC 268217520, Elia 3-7, LEI 4, HBC 389
GV Tauri A:Gaia EDR3 149367383323435648, GV Tau S, EPIC 247820507, Haro 6-10 VLA 1, LEI 4A
GV Tauri B:GV Tau N, Haro 6-10 VLA 2, LEI 4B
Database references
SIMBADdata

GK Tauriis a young binary system composed ofT Tauri-typepre-main sequence starsin the constellation ofTaurusabout466light yearsaway, belonging to theTaurus Molecular Cloud.

System

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The stars GV Tauri A (GV Tauri S) and G Tauri B (GV Tauri N) form a wide binary system, with the projected separation between components being 170AU.Both are strongly shrouded by circumstellar dust - GV Tauri A by 30 magnitudes and the GV Tauri B up to 59 magnitudes in the V band.[4]Both components are suspected to be binaries themselves,[7]as they produce strongly ionized jets and molecular outflows.[8]

Properties

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Both members of the binary system are medium-mass objects still contracting towards themain sequenceand accreting mass, although accretion rates remain highly uncertain as of 2009.[4]

Protoplanetary system

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Both stars are surrounded byprotoplanetary disks,with the observable dust in each being about5×10−5M,and the gas about 0.005M.[6]The disk of GV Tauri B is rich incarbon monoxide,hydrogen cyanideand, unusually,methane.[8]

The GV Tauri A planetary system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
protoplanetary disk 0–17[6]AU 65±5[6]°
The GV Tauri B planetary system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
protoplanetary disk 20[8]AU 30 or 80±10[6]°

References

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  1. ^"MAST: Barbara A. Mikulski Archive for Space Telescopes".Space Telescope Science Institute.Retrieved8 December2021.
  2. ^abc"V* GV Tau A".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2021-08-03.
  3. ^abc"V* GV Tau B".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2021-08-03.
  4. ^abcdePrato, L.; Lockhart, K. E.; Johns-Krull, Christopher M.; Rayner, John T. (2009). "Stellar and Circumstellar Properties of Class I Protostars".The Astronomical Journal.137(4): 3931–3941.arXiv:0902.1289.Bibcode:2009AJ....137.3931P.doi:10.1088/0004-6256/137/4/3931.S2CID12428060.
  5. ^abcBrown, A. G. A.;et al. (Gaia collaboration) (2021)."GaiaEarly Data Release 3: Summary of the contents and survey properties ".Astronomy & Astrophysics.649:A1.arXiv:2012.01533.Bibcode:2021A&A...649A...1G.doi:10.1051/0004-6361/202039657.S2CID227254300.(Erratum:doi:10.1051/0004-6361/202039657e).Gaia EDR3 record for this sourceatVizieR.
  6. ^abcdefgSheehan, Patrick D.; Eisner, Josh A. (2014). "CONSTRAINING THE DISK MASSES OF THE CLASS I BINARY PROTOSTAR GV Tau".The Astrophysical Journal.791(1): 19.arXiv:1405.7959.Bibcode:2014ApJ...791...19S.doi:10.1088/0004-637X/791/1/19.S2CID118437418.
  7. ^Wilking, Bruce A.; Marvel, Kevin B.; Claussen, Mark J.; Gerling, Bradley M.; Wootten, Alwyn; Gibb, Erika (2012). "A Proper Motion Study of the Haro 6-10 Outflow: Evidence for a Subarcsecond Binary".The Astrophysical Journal.753(2): 143.arXiv:1205.5760.Bibcode:2012ApJ...753..143W.doi:10.1088/0004-637X/753/2/143.S2CID18213612.
  8. ^abcFuente, A.; Treviño-Morales, S. P.; Le Gal, R.; Rivière-Marichalar, P.; Pilleri, P.; Rodríguez-Baras, M.; Navarro-Almaida, D. (2020)."Gas kinematics of key prebiotic molecules in GV Tau N revealed with an ALMA, PdBI, and Herschel synergy".Monthly Notices of the Royal Astronomical Society.496(4): 5330–5340.arXiv:2006.15065.doi:10.1093/mnras/staa1919.