Photometry of the Reflection Nebulosity at V1057-CYGNI

Details Photometry of the Reflection Nebulosity at V1057-CYGNI Photometry of the Reflection Nebulosity at V1057-CYGNI

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86.1520d&link_type=abstract

ASTRONOMICAL JOURNAL V. 86, P.1520, 1981

Astronomy and Astrophysics

Astronomy

7

Scientific paper

The decline in brightness of V1057 Cyg since its 1969-1970 flareup has been accompanied by a fading of the reflection nebulosity which was first seen shortly after the outburst. Calibrated photometry of Crossley direct plates taken in the 6100-6700-Å region now shows that, within observational error, the surface brightness of the nebula has in fact decreased in proportion to the brightness of the star at the same wavelength. Except for nebulosity very near the star, whose photometry was not possible, at the present rate of fading of V1057 Cyg the nebula should fall below the detection threshold of the present material about 1985. It is possible that the form of the nebula as now observed has been affected by material ejected from the star at earlier outbursts.

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