Other
Scientific paper
Apr 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aca....42...85d&link_type=abstract
Acta Astronomica (ISSN 0001-5237), vol. 42, no. 2, 1992, p. 85-92. Research supported by European Southern Observatory and Germa
Other
11
Novae, Parallax, Stellar Luminosity, Eddington Approximation, Interstellar Extinction, Light Curve, Stellar Envelopes
Scientific paper
An H alpha image of nova FH Ser shows an almost circular shell with a noticeable equatorial belt. The nebular expansion parallax yields a distance of 850 pc. Rediscussion of the reddening leads to values between E(B-V) = 0.685 and 0.4, and to a bolometric luminosity of -7.5 and -6.9, respectively. During outburst the nova either radiated at constant luminosity above the Eddington limit, or it declined by a factor 2 in luminosity near the Eddington limit. Comparison with DQ Her and with other novae, observed in the UV, optical, and IR regions, renders the second alternative more likely.
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