Astronomy:V394 Aurigae

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Short description: Star in the constellation Auriga
V394 Aurigae
Location of V394 Aurigae (circled)
Observation data
Equinox J2000.0]] (ICRS)
Constellation Auriga
Right ascension  06h 06m 22.44529s[1]
Declination +29° 30′ 44.6832″[1]
Apparent magnitude (V) 6.01 - 6.11[2]
Characteristics
Evolutionary stage AGB[3]
Spectral type M3II[4]
Apparent magnitude (G) 5.02[1]
U−B color index 1.94
B−V color index 1.73
Variable type Semi-regular[2]
Astrometry
Radial velocity (Rv)−36.99±0.19[1] km/s
Proper motion (μ) RA: 11.503±0.083[1] mas/yr
Dec.: −5.126±0.059[1] mas/yr
Parallax (π)3.7146 ± 0.0756[1] mas
Distance880 ± 20 ly
(269 ± 5 pc)
Details
Radius85[5] R☉
Luminosity985[6] L☉
Surface gravity (log g)0.78[7] cgs
Temperature3,639[5] K
Other designations
DO 11899, HIC 28930, PPM Star Catalogue 95388, STT 129, GC 7725, HIP 28930, SAO 77958, ADS 4673, GCRV 3829, HR 2146, AG+29° 663, IDS 06000+2931, TYC 1876-1774-1, BD+29° 1112, IRAS 06031+2931, UBV M 11751, CCDM J06064+2931, GSC 01876-01774, IRC +30137, YZ 29 2943, CSI+29 1112 1, HD 41429, 2MASS J06062243+2930445, Gaia DR3 3437486803458219904.
Database references
SIMBADdata
A light curve for V394 Aurigae, plotted from Hipparcos data[8]

V394 Aurigae is a semi-regular variable star in the constellation Auriga. Its brightness varies between magnitudes 6.01 and 6.11,[2] so it is faintly visible to the naked eye under ideal observing conditions. Located around 880 light-years distant, V394 Aurigae shines with a luminosity approximately 985 times that of the Sun[1][6] and has a surface temperature of 3,639 K.[5]

In 1991, Leroy F. Snyder discovered that the star, then called HR 2146, is a variable star.[9] It was given its variable star designation, V394 Aurigae, in 1993.[10] Koen and Eyer found that the star's brightness, as seen by Hipparcos, varies with a period of 3.9 days.[11]

It is a double star: the secondary, designated V394 Aurigae B, is an eleventh-magnitude F7V star[12] with a separation of 10 arcseconds.[13]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  2. ↑ 2.0 2.1 2.2 Watson, Christopher (4 January 2010). "V394 Aurigae". The International Variable Star Index. American Association of Variable Star Observers. http://www.aavso.org/vsx/index.php?view=detail.top&oid=4156. 
  3. ↑ Eggen, Olin J. (1992). "Asymptotic Giant Branch Stars Near the Sun". The Astronomical Journal 104: 275. doi:10.1086/116239. Bibcode: 1992AJ....104..275E. 
  4. ↑ Abt, H. A. (1981). "Visual multiples. VII. MK classifications". The Astrophysical Journal Supplement Series 45: 437. doi:10.1086/190719. Bibcode: 1981ApJS...45..437A. 
  5. ↑ 5.0 5.1 5.2 Stassun, Keivan G. et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S. 
  6. ↑ 6.0 6.1 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  7. ↑ Poggio, E.; Recio-Blanco, A.; Palicio, P. A.; Re Fiorentin, P.; De Laverny, P.; Drimmel, R.; Kordopatis, G.; Lattanzi, M. G. et al. (2022). "The chemical signature of the Galactic spiral arms revealed by Gaia DR3". Astronomy and Astrophysics 666: L4. doi:10.1051/0004-6361/202244361. Bibcode: 2022A&A...666L...4P. 
  8. ↑ "/ftp/cats/more/HIP/cdroms/cats". Strasbourg astronomical Data Center. https://cdsarc.cds.unistra.fr/viz-bin/ftp-index?/ftp/cats/more/HIP/cdroms/cats. 
  9. ↑ Snyder, L. F. (July 1991). "HR 2146 A New Variable in Auriga". Information Bulletin on Variable Stars 3632: 1. Bibcode: 1991IBVS.3632....1S. https://ibvs.konkoly.hu/pub/ibvs/3601/3632.pdf. Retrieved 1 December 2024. 
  10. ↑ Kazarovets, E. V.; Samus, N. N.; Goranskij, V. P. (February 1993). "The 71st Name-List of Variable Stars". Information Bulletin on Variable Stars 3840: 1–27. Bibcode: 1993IBVS.3840....1K. https://ibvs.konkoly.hu/pub/ibvs/3801/3840.pdf. Retrieved 1 December 2024. 
  11. ↑ Koen, Chris; Eyer, Laurent (March 2002). "New periodic variables from the Hipparcos epoch photometry". Monthly Notices of the Royal Astronomical Society 331 (1): 45–59. doi:10.1046/j.1365-8711.2002.05150.x. Bibcode: 2002MNRAS.331...45K. 
  12. ↑ Wright, Candace O.; Egan, Michael P.; Kraemer, Kathleen E.; Price, Stephan D. (2003). "The Tycho-2 Spectral Type Catalog". The Astronomical Journal 125 (1): 359. doi:10.1086/345511. Bibcode: 2003AJ....125..359W. 
  13. ↑ Dommanget, J.; Nys, O. (2002). "CCDM (Catalog of Components of Double & Multiple stars) (Dommanget+ 2002)". VizieR On-line Data Catalog: I/274. Originally Published in: Observations et Travaux 54 1274. Bibcode: 2002yCat.1274....0D.  Vizier catalog entry



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