V723 Cas equivalent widths Virtual Observatory Resource

Authors
  1. Iijima T.
  2. Rosino L.
  3. Della Valle M.
  4. Published by
    CDS
Abstract

The monitoring of spectral evolution of the very slow nova V723 Cas started at the Asiago Astrophysical Observatory just on the announcement of discovery. In this paper the spectral evolution during the long pre-maximum stage, which lasted from August to December 1995, is reported. Emission lines of H I and Fe II were prominent in the early stage. Most of the lines were accompanied by P Cygni type absorption components. The emission lines gradually weakened with time and the absorption components developed. The mean of the blue-shifts of the absorption components with respect to the emissions was about -126km/s in September and -96km/s in December 1995. Some lines of Fe I, Fe II, Y II, Sc II, Ba II, etc. appeared in the later stage. All emission lines, except for H{alpha}, once nearly disappeared in November when the nova slightly brightened to V=~8.6. Some emission lines appeared again several days before the beginning of the final rise to maximum luminosity, then a pure absorption spectrum of F type supergiant was seen on the maximum of V=~7.1 at the middle of December. The absorption components of Si II lines at 634.7 and 637.1nm showed fairly different profiles from those of the other metallic lines, which suggests a complicated gas motion in the atmosphere. The distance and the absolute magnitude at maximum are estimated to be 2.95+/-0.7kpc and M_V_(max)=-6.1+/-0.5, respectively. The mass of the white dwarf in this system may be about 0.58+/-0.07M_{sun}_.

Keywords
  1. novae
  2. line-intensities
Bibliographic source Bibcode
1998A&A...338.1006I
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/338/1006
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/338/1006
Document Object Identifer DOI
doi:10.26093/cds/vizier.33381006

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/338/1006
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/338/1006
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/338/1006
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

History

1998-11-07T17:50:53Z
Resource record created
1998-11-07T16:51:35Z
Updated
1998-11-07T17:50:53Z
Created

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr