Astronomy:CS Camelopardalis

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Short description: Binary star in the constellation Camelopardalis
CS Camelopardalis
Camelopardalis constellation map.svg
Red circle.svg
Location of CS Camelopardalis (circled)
Observation data
{{#ifeq:J2000|J2000.0 (ICRS)|Epoch J2000.0      Equinox J2000.0 (ICRS)| Epoch J2000      [[Astronomy:Equinox (celestial coordinates)|Equinox J2000}}
Constellation Camelopardalis
A
Right ascension  03h 29m 04.13196s[1]
Declination +59° 56′ 25.1970″[1]
Apparent magnitude (V) 4.22[2] (4.19 - 4.23[3])
B
Right ascension  03h 29m 04.22561s[4]
Declination +59° 56′ 25.9860″[4]
Apparent magnitude (V) 7.75[5]
Characteristics
A
Spectral type B9 Ia[6]
U−B color index −0.23[2]
B−V color index +0.41[2]
Variable type α Cyg[7]
B
Spectral type B2III[8]
Astrometry
A
Radial velocity (Rv)−5.10[9] km/s
Proper motion (μ) RA: −2.751[1] mas/yr
Dec.: −1.066[1] mas/yr
Parallax (π)1.0527 ± 0.1311[1] mas
Distanceapprox. 3,100 ly
(approx. 900 pc)
Absolute magnitude (MV)−7.10[10]
B
Proper motion (μ) RA: −1.702[4] mas/yr
Dec.: −0.646[4] mas/yr
Parallax (π)0.9642 ± 0.0601[4] mas
Distance3,400 ± 200 ly
(1,040 ± 60 pc)
Details
Mass19[11] M☉
Radius85.7[11] R☉
Luminosity75,900[12] L☉
Surface gravity (log g)1.65[6] cgs
Temperature10,800[6] K
Rotational velocity (v sin i)30[13] km/s
Age16.5[14] Myr
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.)

CS Camelopardalis (CS Cam; HD 21291) is a binary star in reflection nebula VdB 14, in the constellation Camelopardalis.

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.

As a binary star, CS Cam is designated as Struve 385 (STF 385, Σ385).[15]

A light curve for CS Camelopardalis, adapted from Morel et al. (2004)[16]

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 blue giant star located 2.4 arcseconds from the primary.[17]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  2. ↑ 2.0 2.1 2.2 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. et al. (1997). "The HIPPARCOS Catalogue". Astronomy and Astrophysics 323: 501. Bibcode: 1997A&A...323L..49P. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  5. ↑ Fabricius, C.; Høg, E.; Makarov, V. V.; Mason, B. D.; Wycoff, G. L.; Urban, S. E. (2002). "The Tycho double star catalogue". Astronomy and Astrophysics 384 (1): 180–189. doi:10.1051/0004-6361:20011822. ISSN 0004-6361. Bibcode: 2002A&A...384..180F. 
  6. ↑ 6.0 6.1 6.2 Firnstein, M.; Przybilla, N. (2012). "Quantitative spectroscopy of Galactic BA-type supergiants. I. Atmospheric parameters". Astronomy & Astrophysics 543: A80. doi:10.1051/0004-6361/201219034. Bibcode: 2012A&A...543A..80F. 
  7. ↑ Samus, N. N. 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. 
  8. ↑ Maíz Apellániz, J.; Barbá, R. H.; Fariña, C.; Sota, A.; Pantaleoni González, M.; Holgado, G.; Negueruela, I.; Simón-Díaz, S. (2021). "Lucky spectroscopy, an equivalent technique to lucky imaging. II. Spatially resolved intermediate-resolution blue-violet spectroscopy of 19 close massive binaries using the William Herschel Telescope". Astronomy and Astrophysics 646: A11. doi:10.1051/0004-6361/202039479. Bibcode: 2021A&A...646A..11M. 
  9. ↑ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters 32 (11): 759–771. doi:10.1134/S1063773706110065. Bibcode: 2006AstL...32..759G. 
  10. ↑ Lyder, David A. (2001). "The Stars in Camelopardalis OB1: Their Distance and Evolutionary History". The Astronomical Journal 122 (5): 2634–2643. doi:10.1086/323705. Bibcode: 2001AJ....122.2634L. 
  11. ↑ 11.0 11.1 Lamers, H. J. G. L. M. (1981). "Mass loss from O and B stars". Astrophysical Journal 245: 593. doi:10.1086/158835. Bibcode: 1981ApJ...245..593L. 
  12. ↑ 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. 
  13. ↑ Abt, Helmut A.; Levato, Hugo; Grosso, Monica (2002). "Rotational Velocities of B Stars". The Astrophysical Journal 573 (1): 359–365. doi:10.1086/340590. Bibcode: 2002ApJ...573..359A. 
  14. ↑ Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (January 2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society 410 (1): 190–200. doi:10.1111/j.1365-2966.2010.17434.x. Bibcode: 2011MNRAS.410..190T. 
  15. ↑ The Washington Visual Double Star Catalog
  16. ↑ 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. Bibcode: 2004MNRAS.351..552M. 
  17. ↑ Dommanget, J. et al. (2002). "Catalog of Components of Double & Multiple stars". Observations et Travaux 54 (5). Bibcode: 2002yCat.1274....0D. 

External links



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