Abstract
ABSTRACT 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.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Publications of the Astronomical Society of the Pacific
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
