The infrared spectrum of the dwarf nova EX Hydrae

Details The infrared spectrum of the dwarf nova EX Hydrae The infrared spectrum of the dwarf nova EX Hydrae

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.196..921f&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 196, Sept. 1981, p. 921-925.

Astronomy and Astrophysics

Astronomy

14

Binary Stars, Infrared Astronomy, Novae, Stellar Envelopes, Stellar Spectra, Stellar Spectrophotometry, White Dwarf Stars, Dust, Hot Stars, Infrared Photometry, Infrared Spectra, Optical Thickness, Stellar Mass Accretion

Scientific paper

Infrared photometry and CVF spectrophotometry of the dwarf nova EX Hydrae is reported. Results of the observation are presented, and include the following: while the JHK fluxes show a decrease with wavelength as would be expected from a disk, the CVF points reverse this trend and lead back to the L point at 3.6 microns, with the rise in flux towards longer wavelengths indicating the presence of material at a temperature of approximately less than 1000 K. This is interpreted in terms of a circumstellar dust cloud resulting from mass loss during the accretion process. Attention is given to the variability of the near-infrared spectrum, and the detection of the B nu line of hydrogen is reported.

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