Star in the constellation Camelopardalis
Z Camelopardalis (Z Cam ) is a cataclysmic variable star system in the northern constellation of Camelopardalis . It has an apparent visual magnitude which varies between 9.8 and 14.5. This system is the prototype star for the family of Z Camelopardalis variable stars : dwarf novae with standstills at a brightness intermediate between their maxima and minima. It may be the same bright nova that was recorded by Chinese astrologers in the autumn of 77 BCE.
Z Camelopardalis was discovered photographically in 1904 by Henry Park Hollis during work for the Astrographic Catalogue . It is surrounded by an extensive shell thought to have been ejected in a nova explosion, the largest known of its type. The size and expansion of this shell sets a firm lower limit since the last eruption of at least 220 years.
Gallery
light curve showing a characteristic standstill interrupting the otherwise regular eruptions
ultraviolet
References
"Download Data" . aavso.org . AAVSO. Retrieved 1 October 2021.^ 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 .
^ Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports 61 (1): 80–88. Bibcode :2017ARep...61...80S . doi :10.1134/S1063772917010085 . S2CID 125853869 .
Duflot, M.; et al. (1995). "Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue". Astronomy and Astrophysics Supplement Series . 114 : 269. Bibcode :1995A&AS..114..269D .
"Z Cam" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2020-11-15.{{cite web }}: CS1 maint: postscript (link )
^ Shara, Michael M.; et al. (September 2012). "The Inter-eruption Timescale of Classical Novae from Expansion of the Z Camelopardalis Shell". The Astrophysical Journal . 756 (2): 6. arXiv :1205.3531 . Bibcode :2012ApJ...756..107S . doi :10.1088/0004-637X/756/2/107 . S2CID 37111481 . 107.
"New Variable Stars found on the Astrographic Plates at the Royal Observatory, Greenwich" . Monthly Notices of the Royal Astronomical Society . 64 (9): 837–838. 1904. Bibcode :1904MNRAS..64..837. . doi :10.1093/mnras/64.9.837 .Shara, Michael M.; et al. (2007). "An ancient nova shell around the dwarf nova Z Camelopardalis". Nature . 446 (7132): 159–162. Bibcode :2007Natur.446..159S . doi :10.1038/nature05576 . PMID 17344847 . S2CID 4428527 .
External links
Price, Aaron (April 1999). "Z Camelopardalis" . Variable Star of the Month. AAVSO. Retrieved 2020-11-16. This variable star–related article is a stub . You can help Misplaced Pages by expanding it .
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Z Camelopardalis light curve showing a characteristic standstill interrupting the otherwise regular eruptions
Gas shell Around Z Camelopardalis
Z Camelopardalis in ultraviolet
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