The Physics of Early Nova Spectra

Details The Physics of Early Nova Spectra The Physics of Early Nova Spectra

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...447..829h&link_type=abstract

Astrophysical Journal v.447, p.829

Astronomy and Astrophysics

Astronomy

60

Stars: Novae, Cataclysmic Variables, Radiative Transfer, Stars: Atmospheres

Scientific paper

We discuss the physical effects that are important for the formation of the early spectra of novae. Nova atmospheres are optically thick, fast expanding shells with flat density profiles, leading to geometrically very extended atmospheres. We show that the properties of early nova spectra can be understood in terms of this basic model and discuss some important effects that influence the structure and the emitted spectrum of nova atmospheres, e.g., line blanketing, non-LTE effects, and the velocity field. The proper modeling of nova atmospheres is discussed, and we give some computational details.

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