Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26as..124..329t&link_type=abstract
A & A Supplement series, Vol. 124, August 1997, 329-347.
Astronomy and Astrophysics
Astronomy
6
Lines: Profiles, Stars: Emission Line, Be, Open Clusters And Associations: General
Scientific paper
We present Hα line profiles (R ~= 3x103, S/N ~= 102 at continuum level, ~= 50 for some objects) for 58 stars in 8 northern open clusters and associations, complemented with Hβ and Hγ profiles for 36 of them as well as Hdelta and Hepsilon for 16 programme stars. Our observations, though lower in resolution, yield results which are in good agreement with those obtained in earlier works based mainly on field Be stars. Our data suggest a similar spectroscopic behavior for both field and cluster Be stars. The line parameters (EW, FWHM, Delta vp) have been obtained for each line. Nearly the whole set of stars have previously published quasi-simultaneous uvby\beta photometry, so a study of reliable correlations between photometric and spectroscopic data can be undertaken. Based on observations made at the German-Spanish Astronomical Center, Calar Alto, Spain which is operated by the Max Planck Institut fuer Astronomie, Heidelberg, jointly with the spanish National Commission for Astronomy.
Alba S.
Bernabeu Guillem
Fabregat Juan
Torrejon Jose Miguel
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