CPD -48 deg 1577 - The brightest known cataclysmic variable

Details CPD -48 deg 1577 - The brightest known cataclysmic variable CPD -48 deg 1577 - The brightest known cataclysmic variable

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...276l..13g&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 276, Jan. 1, 1984, p. L13-L16. Research supported b

Other

20

Spectroscopic Analysis, Stellar Spectra, Variable Stars, Absorption Spectra, Interstellar Extinction, Line Spectra, Stellar Mass Accretion, Ubv Spectra

Scientific paper

The discovery is reported of a V = 9.4 mag star which has the properties of a cataclysmic variable. Its UBV colors are similar to those of UX UMa, and its brightness fickers with an amplitude of the order of 0.1 mag. Larger brightness variations (0.5 mag) are found on a time scale of years. Its spectrum is characterized by extremely weak absorption lines of He I and He II, as well as extremely broad, shallow lines of H. A broad K line is very weakly present in absorption. Emission cores with a very slow decrement are seen in the H lines. From a comparison with the known properties of other cataclysmic variables, the distance, reddening, and mass exchange rate are estimated. The space density of cataclysmic variables is also estimated, since the original spectroscopic survey is complete to magnitude B = 10.0.

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