Infrared observations of polars - AM Her, VV Pup, and an UMa

Details Infrared observations of polars - AM Her, VV Pup, and an UMa Infrared observations of polars - AM Her, VV Pup, and an UMa

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aj.....85..882s&link_type=abstract

Astronomical Journal, vol. 85, July 1980, p. 882-885.

Astronomy and Astrophysics

Astronomy

16

Infrared Astronomy, Polarimetry, Stellar Radiation, Stellar Spectrophotometry, Variable Stars, Circular Polarization, Cyclotron Radiation, Light Curve, Linear Polarization, Spectral Energy Distribution, Stellar Spectra

Scientific paper

Infrared observations of the three polars AM Her, VV Pup, and AN UMa are presented. The 1.2-2.2-micron energy distribution of VV Pup during the low state is consistent with that of an M4-M5 star and a light curve obtained with the K filter shows small variability over the 100-min orbital period. 1.2-20-micron observations of AM Her during the high state show flux maxima near 1 and 10 microns. Large variations at all wavelengths were also observed from AM Her during the course of one year. No linear polarization was detected at filter K. J, H, and K measurements of AN UMa, made during a low state, reveal a small infrared excess which is probably not due to a late-type companion.

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