Abstract:
We present a spectroscopic study of 150 Classical Be stars in 39 open
clusters using medium resolution spectra in the wavelength range 3800 – 9000 A° . Onethird
of the sample (48 stars in 18 clusters) has been studied for the first time. All these
candidates were identified from an extensive survey of emission stars in young open
clusters using slitless spectroscopy (Mathew et al. 2008). This large data set covers
CBe stars of various spectral types and ages found in different cluster environments
in largely northern open clusters, and is used to study the spectral characteristics of
CBe stars in cluster environments. About 80% of CBe stars in our sample have H®
equivalent width in the range ¡1 – ¡40 A° . About 86% of the surveyed CBe stars show
FeII lines. The prominent FeII lines in our surveyed stars are 4584, 5018, 5169, 5316,
6318, 6384, 7513 and 7712 A° . We have identified short- and long-term line profile
variability in some candidate stars through repeated observations.
