The early infrared development of Nova Cygni 1975

Details The early infrared development of Nova Cygni 1975 The early infrared development of Nova Cygni 1975

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...204l..35g&link_type=abstract

Astrophysical Journal, vol. 204, Feb. 15, 1976, pt. 2, p. L35-L39.

Astronomy and Astrophysics

Astronomy

76

Astronomical Photometry, Energy Spectra, Infrared Astronomy, Novae, Black Body Radiation, Broadband, Infrared Spectra, Light Curve, Luminous Intensity, Stellar Envelopes

Scientific paper

Broad-band infrared photometry of Nova Cygni is presented for 50 days following discovery. During the first three days, the energy distribution is approximately that of a blackbody. A distance of 1.5 (plus or minus 0.5) kpc is derived from a measurement of the blackbody-expansion parallax. After the fourth day, the energy spectrum is close to that of a free-free source. A possible mechanism for producing this rapid change is discussed. Although the nova is unusual in several respects, the physical parameters derived from the observations are about normal for a very fast galactic nova.

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