Identification of Lanning 90 as a previously uncataloged cataclysmic variable

Details Identification of Lanning 90 as a previously uncataloged cataclysmic variable Identification of Lanning 90 as a previously uncataloged cataclysmic variable

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pasp...95..206s&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 95, March 1983, p. 206-210.

Astronomy and Astrophysics

Astronomy

9

Abundance, Balmer Series, Emission Spectra, Stellar Spectrophotometry, Variable Stars, Carbon, Helium, Hydrogen, Nitrogen, Novae, Spectral Line Width, Spectral Resolution

Scientific paper

Spectroscopic observations which reveal Lanning 90 to be a previously uncataloged cataclysmic variable are presented. Low-resolution spectra of the object display strong and broad emission lines of hydrogen and neutral helium superimposed on a continuum with roughly constant F-lambda. In addition to the Balmer and He I emision lines, the spectrum shows high excitation lines of He II, C II, C III, and N III. After a brief discussion of its general spectral character, it is argued that Lanning 90 is probably a nova-like variable. It is noted that the photometric and spectroscopic variability exhibited by the object is similar to the variability shown by the AM Herculis systems.

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