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V Crucis

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Variable star in the constellation Crux
V Crucis

The visual band light curve of V Crucis, from AAVSO data
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Crux
Right ascension 12 56 35.559
Declination −57° 53′ 57.02″
Apparent magnitude (V) 8.74 - 11.13
Characteristics
Spectral type Ce(Ne)
Variable type Mira
Astrometry
Radial velocity (Rv)−19.90 km/s
Proper motion (μ) RA: 0.507 mas/yr
Dec.: 1.989 mas/yr
Parallax (π)0.7451 ± 0.0475 mas
Distance4,400 ± 300 ly
(1,340 ± 90 pc)
Absolute magnitude (MV)-4.67
Details
Radius130 R☉
Luminosity7,244 L☉
Temperature3,075 K
Other designations
V Cru, CD−57°4791, HD 112319, HIP 63175, IRAS 12536-5737, 2MASS J12563556-5753569
Database references
SIMBADdata

V Crucis is a carbon star in the constellation Crux. A Mira variable, its apparent magnitude ranges from 8.7 to 11.1 over 376.5 days. The fact that this star's period is nearly equal to one year makes it hard to get good observational coverage over the entire cycle. Its near-infrared light curve shows a contribution from the first harmonic of the fundamental period.

References

  1. "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  2. ^ 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. Pojmanski, G. (2002). "The All Sky Automated Survey. Catalog of Variable Stars. I. 0 h - 6 hQuarter of the Southern Hemisphere". Acta Astronomica. 52: 397–427. arXiv:astro-ph/0210283. Bibcode:2002AcA....52..397P.
  4. ^ "V Crucis". AAVSO Website. American Association of Variable Star Observers. 4 January 2010. Retrieved 2019-12-11.
  5. Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 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. Guandalini, R.; Cristallo, S. (2013). "Luminosities of carbon-rich asymptotic giant branch stars in the Milky Way". Astronomy and Astrophysics. 555: A120. arXiv:1305.4203. Bibcode:2013A&A...555A.120G. doi:10.1051/0004-6361/201321225. S2CID 54918450.
  7. ^ Bergeat, J.; Knapik, A.; Rutily, B. (2002). "Carbon-rich giants in the HR diagram and their luminosity function". Astronomy and Astrophysics. 390 (3): 967–986. Bibcode:2002A&A...390..967B. doi:10.1051/0004-6361:20020525.
  8. "V Cru". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-12-11.
  9. Whitelock, P. A.; Feast, M. W.; Marang, F.; Overbeek, M. D. (June 1997). "Mass-loss variations among carbon-rich AGB variables". Monthly Notices of the Royal Astronomical Society. 288 (2): 512–532. Bibcode:1997MNRAS.288..512W. doi:10.1093/mnras/288.2.512.
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