Photometry and polarimetry of VW Hydri during the October 1978 supermaximum

Details Photometry and polarimetry of VW Hydri during the October 1978 supermaximum Photometry and polarimetry of VW Hydri during the October 1978 supermaximum

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....91...25s&link_type=abstract

Astronomy and Astrophysics, vol. 91, no. 1-2, Nov. 1980, p. 25-31.

Astronomy and Astrophysics

Astrophysics

33

Binary Stars, Dwarf Stars, Light Curve, Novae, Polarimetry, Stellar Spectrophotometry, Astronomical Photometry, Data Reduction, Electrophotometry, Linear Polarization, Stellar Luminosity

Scientific paper

The photoelectric observations of VW Hyi at the supermaximum show the superhump phenomenon which weakens during the decline, with several peaks appearing in the light curve. One peak developed near phase 0.5 P(1) for several days, and interfered with the orbital hump producing the beat phenomenon; two ultrashort period oscillations of 33 and 74 s occurred near the detection limit. The nightly mean linear polarization was in the 0.02-0.1% range, increasing with decreasing brightness; the polarization was caused by a single particle scattering in the disk. The color curves suggest that the disk has a more spherical shape in the early outbursts state than during quiescence, and it gradually flattens during the decline.

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