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CS Camelopardalis (CS Cam) is a binary star in reflection nebula VdB 14, in the constellation Camelopardalis.

CS Camelopardalis
Location of CS Camelopardalis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Camelopardalis
Right ascension 03h 29m 04.13196s[1]
Declination +59° 56′ 25.1970″[1]
Apparent magnitude (V) 4.22[2] (4.19 - 4.23[3])
Characteristics
Spectral type B9 Ia[4]
U−B color index −0.23[2]
B−V color index +0.41[2]
R−I color index +0.38[2]
Variable type α Cyg[5]
Astrometry
Radial velocity (Rv)−5.10[6] km/s
Proper motion (μ) RA: −2.24[1] mas/yr
Dec.: −0.90[1] mas/yr
Parallax (π)1.68 ± 0.50 mas[1]
Distance975[7] pc
Absolute magnitude (MV)−7.10[7]
Details
Mass19[8] M☉
Radius85.7[8] R☉
Luminosity75,900[9] L☉
Surface gravity (log g)1.65[4] cgs
Temperature10,800[4] K
Rotational velocity (v sin i)30[10] km/s
Other designations
ADS 2544, BD+59°660, CCDM 03291+5956, GC 4113, HD 21291, HIP 16228, HR 1035, SAO 24054, WDS J03291+5956
Database references
SIMBADdata
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

It forms a group of stars known as the Camelopardalis R1 association, part of the Cam OB1 association. The near-identical supergiant CE Camelopardalis is located half a degree to the south.

A light curve for CS Camelopardalis, adapted from Morel et al. (2004)[11]
A light curve for CS Camelopardalis, adapted from Morel et al. (2004)[11]

The primary component, CS Camelopardalis A, is a blue-white B-type supergiant with a mean apparent magnitude of 4.21m. It is classified as an Alpha Cygni type variable star and its brightness varies from magnitude 4.19m to 4.23m. Its companion, CS Camelopardalis B, is a magnitude 8.7m star located 2.4 arcseconds from the primary.[12]


References


  1. van Leeuwen, Floor (13 August 2007). "Validation of the new Hipparcos reduction". Astronomy & Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. eISSN 1432-0746. ISSN 0004-6361.
  2. Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
  3. Perryman, M. A. C.; Lindegren, L.; Kovalevsky, J.; Hoeg, E.; Bastian, U.; Bernacca, P. L.; Crézé, M.; Donati, F.; Grenon, M.; Grewing, M.; Van Leeuwen, F.; Van Der Marel, H.; Mignard, F.; Murray, C. A.; Le Poole, R. S.; Schrijver, H.; Turon, C.; Arenou, F.; Froeschlé, M.; Petersen, C. S. (1997). "The HIPPARCOS Catalogue". Astronomy and Astrophysics. 323: 501. Bibcode:1997A&A...323L..49P.
  4. Firnstein, M.; Przybilla, N. (2012). "Quantitative spectroscopy of Galactic BA-type supergiants. I. Atmospheric parameters". Astronomy & Astrophysics. 543: A80. arXiv:1207.0308. Bibcode:2012A&A...543A..80F. doi:10.1051/0004-6361/201219034. S2CID 54725386.
  5. Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  6. 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.
  7. Lyder, David A. (2001). "The Stars in Camelopardalis OB1: Their Distance and Evolutionary History". The Astronomical Journal. 122 (5): 2634–2643. Bibcode:2001AJ....122.2634L. doi:10.1086/323705.
  8. Lamers, H. J. G. L. M. (1981). "Mass loss from O and B stars". Astrophysical Journal. 245: 593. Bibcode:1981ApJ...245..593L. doi:10.1086/158835.
  9. McErlean, N. D.; Lennon, D. J.; Dufton, P. L. (1999). "Galactic B-supergiants: A non-LTE model atmosphere analysis to estimate atmospheric parameters and chemical compositions". Astronomy and Astrophysics. 349: 553. Bibcode:1999A&A...349..553M.
  10. Abt, Helmut A.; Levato, Hugo; Grosso, Monica (2002). "Rotational Velocities of B Stars". The Astrophysical Journal. 573 (1): 359–365. Bibcode:2002ApJ...573..359A. doi:10.1086/340590.
  11. Morel, T.; Marchenko, S. V.; Pati, A. K.; Kuppuswamy, K.; Carini, M. T.; Wood, E.; Zimmerman, R. (June 2004). "Large-scale wind structures in OB supergiants: a search for rotationally modulated Hα variability". Monthly Notices of the Royal Astronomical Society. 351 (2): 552–568. doi:10.1111/j.1365-2966.2004.07799.x. Retrieved 9 November 2021.
  12. Dommanget, J.; et al. (2002). "Catalog of Components of Double & Multiple stars". Observations et Travaux. 54 (5). Bibcode:2002yCat.1274....0D.



На других языках

[de] CS Camelopardalis

CS Camelopardalis (kurz CS Cam; auch HR 1035 Cam) ist mit einer scheinbaren Helligkeit von etwa 4.3m der zweithellste Stern des Sternbilds Giraffe (lateinisch Camelopardalis); nur β Camelopardalis übertrifft ihn an Helligkeit. Trotzdem besitzt er keine Flamsteed-Bezeichnung, wie es für einigermaßen helle Sterne üblich ist, und er erscheint dem bloßen Auge recht lichtschwach.[8]
- [en] CS Camelopardalis


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