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)6.0 [3]
Characteristics
Spectral type B2IV-V [4]
U−B color index −0.5
B−V color index +0.16
Variable type SPB [5]
Astrometry
Radial velocity (Rv)+22.9±1.9 [6] km/s
Proper motion (μ)RA: −0.82 [7] mas/yr
Dec.: −7.11 [7] mas/yr
Parallax (π)1.0114±0.1708  mas [2]
Distance approx. 3,200  ly
(approx. 1,000  pc)
Details
Mass 8.7 [8]   M☉
Radius 9.8 [9]   R☉
Luminosity 14,128 [10]   L☉
Surface gravity (log g)3.24 [8]   cgs
Temperature 16,950 [8]   K
Rotational velocity (v sin i)27 [8]  km/s
Age 19.8 [11]   Myr
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 varies by a few hundredths of a magnitude over 4.6 days. [5] It is faintly visible to the naked eye under very good observing conditions. It shines with a luminosity approximately 14,000 times that of the Sun [10] and has a surface temperature of about 16,950  K . [8]

V433 Aurigae was discovered to be a variable star when the Hipparcos data was analyzed. It was given its variable star designation in 1999. [12]

References

  1. ↑ "Hipparcos Tools Interactive Data Access". Hipparcos. ESA. Retrieved 8 December 2021.
  2. 1 2 3 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. ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355. Bibcode:2000A&A...355L..27H.
  4. 1 2 "V433 Aur". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2021-03-21.
  5. 1 2 Watson, Christopher (4 January 2010). "V433 Aurigae". The International Variable Star Index. American Association of Variable Star Observers . Retrieved 4 August 2015.
  6. ↑ 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.
  7. 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.
  8. 1 2 3 4 5 Huang, Wenjin; Gies, D. R.; McSwain, M. V. (2010). "A Stellar Rotation Census of B Stars: From ZAMS to TAMS". The Astrophysical Journal. 722 (1): 605. arXiv: 1008.1761 . Bibcode:2010ApJ...722..605H. doi:10.1088/0004-637X/722/1/605.
  9. ↑ Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3. Proper-motion anomaly and resolved common proper-motion pairs". Astronomy and Astrophysics. 657. arXiv: 2109.10912 . Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146.
  10. 1 2 Fouesneau, M.; Andrae, R.; Dharmawardena, T.; Rybizki, J.; Bailer-Jones, C. A. L.; Demleitner, M. (2022). "Astrophysical parameters from Gaia DR2, 2MASS, and AllWISE". Astronomy and Astrophysics. 662: A125. arXiv: 2201.03252 . Bibcode:2022A&A...662A.125F. doi:10.1051/0004-6361/202141828.
  11. ↑ Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 KPC from the Sun". Monthly Notices of the Royal Astronomical Society. 410 (1): 190. arXiv: 1007.4883 . Bibcode:2011MNRAS.410..190T. doi: 10.1111/j.1365-2966.2010.17434.x .
  12. ↑ 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.


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