V433 Aurigae

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V433 Aurigae
V433AurLightCurve.png
A light curve for V433 Aurigae, plotted from Hipparcos data [1]
Observation data
Epoch J2000       Equinox J2000
Constellation Auriga
Right ascension 05h 39m 18.3132s [2]
Declination +29° 12 54.788 [2]
Apparent magnitude  (V)6.02–6.06 [3]
Characteristics
Spectral type B2IV-V [4]
U−B color index 0.5
B−V color index +0.16
Variable type SPB
Astrometry
Radial velocity (Rv)22.90 ± 1.9 [5]  km/s
Proper motion (μ)RA: 0.82 [6]   mas/yr
Dec.: 7.11 [6]   mas/yr
Parallax (π)1.0114 ± 0.1708  mas [2]
Distance approx. 3,200  ly
(approx. 1,000  pc)
Details
Luminosity 322 [7]   L
Temperature 7400 [7]   K
Other designations
BD+29° 947, HD  37367, HIP  26606, HR  1924, SAO  77354 [4]
Database references
SIMBAD data

V433 Aurigae is a variable star in the constellation Auriga. It is a slowly pulsating B star (SPB) that ranges from apparent magnitude 6.02 to 6.06 over 4.6 days. [3] It is faintly visible to the naked eye under very good observing conditions. Using a Hipparcos -derived distance of about 1,060 light-years (324  pc ), it shines with a luminosity approximately 322 times that of the Sun and has a surface temperature of 7400 K. [7] However, measurements by Gaia indicate a much higher distance of 3,200 light-years (980  pc ). [2]

V433 Aurigae was discovered to be a variable star when the Hipparcos data was analyzed. It was given its variable star designation in 1999. [8]

Related Research Articles

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References

  1. "Hipparcos Tools Interactive Data Access". Hipparcos. ESA. Retrieved 8 December 2021.
  2. 1 2 3 4 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.
  3. 1 2 Watson, Christopher (4 January 2010). "V433 Aurigae". The International Variable Star Index. American Association of Variable Star Observers . Retrieved 4 August 2015.
  4. 1 2 "V433 Aur". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2021-03-21.
  5. Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv: 1606.08053 . Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID   119231169.
  6. 1 2 van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv: 0708.1752 . Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID   18759600.
  7. 1 2 3 McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–57. arXiv: 1208.2037 . Bibcode:2012MNRAS.427..343M. doi: 10.1111/j.1365-2966.2012.21873.x . S2CID   118665352.
  8. Kazarovets, E. V.; Samus, N. N.; Durlevich, O. V.; Frolov, M. S.; Antipin, S. V.; Kireeva, N. N.; Pastukhova, E. N. (January 1999). "The 74th Special Name-list of Variable Stars" (PDF). Information Bulletin on Variable Stars. 4659: 1–27. Bibcode:1999IBVS.4659....1K . Retrieved 2 December 2024.