Outbursts in TV Columbae - Walraven photometry and CCD spectroscopy

Details Outbursts in TV Columbae - Walraven photometry and CCD spectroscopy Outbursts in TV Columbae - Walraven photometry and CCD spectroscopy

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...202l..16s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 202, no. 1-2, Aug. 1988, p. L16-L18.

Astronomy and Astrophysics

Astrophysics

19

Accretion Disks, Binary Stars, Cataclysmic Variables, Stellar Spectrophotometry, X Ray Sources, Charge Coupled Devices, Dwarf Novae, Emission Spectra, Light Curve, Mass Transfer, Stellar Luminosity

Scientific paper

Two outbursts of the intermediate polar TV Col/2A 0526-328 have been observed with Walraven photometry. For one of the bursts the authors have also obtained simultaneous CCD spectroscopy. Both events lasted ≈5 h and showed an increase of about 2 mag in V over the quiescent brightness level with smaller changes on time scales of minutes. The burst spectra show strongly enhanced He II λ4686 emission and several lines which have not previously been observed in this object. The authors give a brief qualitative discussion of these outbursts in terms of existing models for accretion instabilities in cataclysmic variables.

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