Spherical Expanding NLTE Model Atmosphere Studies of Nova Cyg 1992

Details Spherical Expanding NLTE Model Atmosphere Studies of Nova Cyg 1992 Spherical Expanding NLTE Model Atmosphere Studies of Nova Cyg 1992

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...18110012h&link_type=abstract

American Astronomical Society, 181st AAS Meeting, #100.12; Bulletin of the American Astronomical Society, Vol. 24, p.1280

Astronomy and Astrophysics

Astronomy

Scientific paper

We show synthetic spectra for Nova Cyg 1992 during the early, optically thick phase of its evolution. The model atmospheres are calulated using the assumptions of a steady state, spherically symmetric wind model for the early envelope. We solve the non-gray special relativistic equations of radiative transfer and radiative equilibrium in the Lagrangian frame. Non-LTE effects are included self-consistently, as is the effect of line blanketing of about 100,000 UV metal lines (the ``iron-curtain''). The models assume a radial density gradient (rho ~ r(-3) ) and self-similar expansion. These follow from hydrodynamical calculation of the nova outburst and from late time observations of Nova Cyg 1992. We show comparisons between our synthetic spectra and observed IUE low and high resolution spectra and medium resolution optical spectra of Nova Cyg 92 and discuss some of the properties of the spectra and the model atmospheres. An especially important generalization from our models is that the pseudo-emission features, resulting from line opacity minima, are sensitive to the velocity gradient in the ejecta.

Affiliated with

Also associated with

No associations

Rating

Spherical Expanding NLTE Model Atmosphere Studies of Nova Cyg 1992 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spherical Expanding NLTE Model Atmosphere Studies of Nova Cyg 1992, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spherical Expanding NLTE Model Atmosphere Studies of Nova Cyg 1992 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1111965