V394 Aurigae

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V394 Aurigae
Auriga constellation map.svg
Red circle.svg
Location of V394 Aurigae (circled)
Observation data
Epoch J2000       Equinox J2000
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]
U−B color index 1.94
B−V color index 1.73
Variable type Semi-regular [2]
Astrometry
Radial velocity (Rv)−36.40±0.18 [5] km/s
Proper motion (μ)RA: 11.503 [1] mas/yr
Dec.: −5.126 [1] mas/yr
Parallax (π)3.7146±0.0756  mas [1]
Distance 880 ± 20  ly
(269 ± 5  pc)
Details
Radius 85 [6]   R☉
Luminosity 985 [1]   L☉
Surface gravity (log g)0.78 [7]   cgs
Temperature 3,639 [6]   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.
Database references
SIMBAD data
A light curve for V394 Aurigae, plotted from Hipparcos data V394AurLightCurve.png
A light curve for V394 Aurigae, plotted from Hipparcos data

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 730 light-years distant, V394 Aurigae shines with a luminosity approximately 985 times that of the Sun [1] and has a surface temperature of 3,639  K . [6]

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 2 3 4 5 6 7 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR.
  2. 1 2 3 Watson, Christopher (4 January 2010). "V394 Aurigae". The International Variable Star Index. American Association of Variable Star Observers . Retrieved 14 August 2015.
  3. ↑ Eggen, Olin J. (1992). "Asymptotic Giant Branch Stars Near the Sun". The Astronomical Journal. 104: 275. Bibcode:1992AJ....104..275E. doi:10.1086/116239.
  4. ↑ Abt, H. A. (1981). "Visual multiples. VII. MK classifications". The Astrophysical Journal Supplement Series. 45: 437. Bibcode:1981ApJS...45..437A. doi:10.1086/190719.
  5. ↑ Gaia Collaboration (2018-04-01). "VizieR Online Data Catalog: Gaia DR2 (Gaia Collaboration, 2018)". VizieR Online Data Catalog. 1345. Bibcode:2018yCat.1345....0G. doi:10.26093/cds/vizier.1345.
  6. 1 2 3 Stassun, Keivan G.; et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv: 1905.10694 . Bibcode:2019AJ....158..138S. doi: 10.3847/1538-3881/ab3467 .
  7. ↑ Poggio, E.; Recio-Blanco, A.; Palicio, P. A.; Re Fiorentin, P.; De Laverny, P.; Drimmel, R.; Kordopatis, G.; Lattanzi, M. G.; Schultheis, M.; Spagna, A.; Spitoni, E. (2022). "The chemical signature of the Galactic spiral arms revealed by Gaia DR3". Astronomy and Astrophysics. 666: L4. arXiv: 2206.14849 . Bibcode:2022A&A...666L...4P. doi:10.1051/0004-6361/202244361.
  8. ↑ "/ftp/cats/more/HIP/cdroms/cats". Centre de Données astronomiques de Strasbourg. Strasbourg astronomical Data Center. Retrieved 15 October 2022.
  9. ↑ Snyder, L. F. (July 1991). "HR 2146 A New Variable in Auriga" (PDF). Information Bulletin on Variable Stars. 3632: 1. Bibcode:1991IBVS.3632....1S . Retrieved 1 December 2024.
  10. ↑ Kazarovets, E. V.; Samus, N. N.; Goranskij, V. P. (February 1993). "The 71st Name-List of Variable Stars" (PDF). Information Bulletin on Variable Stars. 3840: 1–27. Bibcode:1993IBVS.3840....1K . 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. arXiv: astro-ph/0112194 . Bibcode:2002MNRAS.331...45K. doi: 10.1046/j.1365-8711.2002.05150.x . S2CID   10505995.
  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. Bibcode:2003AJ....125..359W. doi:10.1086/345511.
  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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