The nebular expansion parallax and the luminosity of nova FH SER

Details The nebular expansion parallax and the luminosity of nova FH SER The nebular expansion parallax and the luminosity of nova FH SER

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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