Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008a%26a...479..529k&link_type=abstract
Astronomy and Astrophysics, Volume 479, Issue 2, February IV 2008, pp.529-531
Astronomy and Astrophysics
Astrophysics
1
Stars: Binaries: Symbiotic
Scientific paper
Aims:Study of the spectral and photometric properties of the symbiotic star LL Cas. Methods: Spectroscopy and photometry. Results: Spectral and photometric observations of LL Cas were performed in 1986-2006. LL Cas displays a late-type spectrum with TiO absorbtion bands and emission lines of He II, [O III], He I and H I. Significant fluctuations of relative intensities of [O III], 5007 Å and He II, 4686 Å are revealed. They reflect the changes of the field of radiation of the ionizing source. Wavelike variations of the star's light with amplitudes of about 2^m-3.5m are found in the B, V and R bands. They can be ascribed to the pulsations of the cool giant.
Tables 1-3 are only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/479/529
Denissyuk Eduard K.
Kondratyeva L. N.
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