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Search for forced oscillations in binaries. III. Improved elements and the detection of line-profile variability of the B4V+A6V : system AR Cassiopeia


Holmgren, David E.; Hadrava, Petr; Harmanec, Petr; Eenens, Philippe; Corral, L.J.; Yang, Stephenson; Ak, Hasan; Božić, Hrvoje
Search for forced oscillations in binaries. III. Improved elements and the detection of line-profile variability of the B4V+A6V : system AR Cassiopeia // Astronomy and Astrophysics, 345 (1999), 3; 855-868 (međunarodna recenzija, članak, znanstveni)


Naslov
Search for forced oscillations in binaries. III. Improved elements and the detection of line-profile variability of the B4V+A6V : system AR Cassiopeia

Autori
Holmgren, David E. ; Hadrava, Petr ; Harmanec, Petr ; Eenens, Philippe ; Corral, L.J. ; Yang, Stephenson ; Ak, Hasan ; Božić, Hrvoje

Izvornik
Astronomy and Astrophysics (0004-6361) 345 (1999), 3; 855-868

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Stars: close - Stars: binaries: spectroscopic - Stars: fundamental parameters - Stars: individual: AR Cas

Sažetak
An analysis of a new and extensive set of spectroscopic observations of the early-type binary system AR Cas, based also on spectral disentangling, has led to the discovery of the spectrum of the secondary star and of line-profile variations of the B4V primary star. A revised spectroscopic orbit based on these and published data is presented. We also present new photometric data, which have allowed us to improve the solution of the light curve and demonstrate the presence of apsidal motion. Determination of the basic physical parameters of the binary has allowed us to conclude that the system combines the main-sequence primary with an A6V: secondary, possibly an Am star. The consistency of our model of AR Cas is documentated by a comparison of model atmosphere flux profiles with the profiles recovered from the spectral disentangling. Analysis of the He I 667.8 nm line indicates that line profile variability is present, and that these variations may be periodic.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
007004

Ustanove
Geodetski fakultet, Zagreb

Profili:

Avatar Url Hrvoje Božić (autor)

Citiraj ovu publikaciju

Holmgren, David E.; Hadrava, Petr; Harmanec, Petr; Eenens, Philippe; Corral, L.J.; Yang, Stephenson; Ak, Hasan; Božić, Hrvoje
Search for forced oscillations in binaries. III. Improved elements and the detection of line-profile variability of the B4V+A6V : system AR Cassiopeia // Astronomy and Astrophysics, 345 (1999), 3; 855-868 (međunarodna recenzija, članak, znanstveni)
Holmgren, D., Hadrava, P., Harmanec, P., Eenens, P., Corral, L., Yang, S., Ak, H. & Božić, H. (1999) Search for forced oscillations in binaries. III. Improved elements and the detection of line-profile variability of the B4V+A6V : system AR Cassiopeia. Astronomy and Astrophysics, 345 (3), 855-868.
@article{article, year = {1999}, pages = {855-868}, keywords = {Stars: close - Stars: binaries: spectroscopic - Stars: fundamental parameters - Stars: individual: AR Cas}, journal = {Astronomy and Astrophysics}, volume = {345}, number = {3}, issn = {0004-6361}, title = {Search for forced oscillations in binaries. III. Improved elements and the detection of line-profile variability of the B4V+A6V : system AR Cassiopeia}, keyword = {Stars: close - Stars: binaries: spectroscopic - Stars: fundamental parameters - Stars: individual: AR Cas} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Uključenost u ostale bibliografske baze podataka:


  • Astronomy and Astrophysics Abstracts