Infrared photometry of V1057 Cygni (1971-87)

Details Infrared photometry of V1057 Cygni (1971-87) Infrared photometry of V1057 Cygni (1971-87)

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pasp..100.1549s&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 100, Dec. 1988, p. 1549-1554.

Astronomy and Astrophysics

Astronomy

11

Accretion Disks, Infrared Photometry, Light Curve, Stellar Activity, Variable Stars, Brightness Distribution, Pre-Main Sequence Stars, Spectral Energy Distribution

Scientific paper

Infrared photometry of V1057 Cyg at wavelengths between 1 and 20 microns is presented, and the IR light curve of this star for the 17-year period following its optical outburst in 1970 is described. From 1971 to 1984 the near-IR flux decreased exponentially with e-folding times ranging from 12 yr at a wavelength of 1.25 micron to 67 yr at 4.8 microns. Since 1984 the brightness near 1 micron has leveled off, or perhaps risen slightly, while the emission at 5 microns has started to fall much more rapidly than before. Between 1971 and 1987 the broadband photometric fluxes at 10 and 20 microns declined in proportion to the fourth-root and square root, respectively, of the time that has elapsed since the outburst. The IR spectral energy distributions deduced from the photometry are compared with the predictions of accretion disk models.

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