Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aj....124.3289b&link_type=abstract
The Astronomical Journal, Volume 124, Issue 6, pp. 3289-3298.
Astronomy and Astrophysics
Astronomy
12
Galaxy: Open Clusters And Associations: Individual: Ngc Number: Ngc 869, Galaxy: Open Clusters And Associations: Individual: Ngc Number: Ngc 884, Stars: Early-Type, Stars: Emission-Line, Be
Scientific paper
We describe data for emission-line B stars observed in a spectroscopic survey of h and χ Persei. The survey is complete to V=12.5 and covers an area of ~1100 arcmin2 roughly centered on the two clusters. We detect 32 Be stars; some have low Hα emission strength. Seven of these are new identifications; seven others are confirmations of Be stars previously identified using photometry. Five of the observed Be stars show significant Hα profile variations from epoch to epoch. We show that spectral indices yield physical characteristics of the H II emission region. This automatic method is robust and easily applied to large spectroscopic samples. We infer Hα:Hβ flux ratios of 2-5 and observe a linear relationship between Hα emission and J-K color for these stars. We include a Hertzsprung-Russell diagram for the B-type stars in the clusters.
Bragg Ann Elizabeth
Kenyon Scott. J.
No associations
LandOfFree
H II Emission from a Complete Spectroscopic Survey of Be Stars in h and χ Persei does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with H II Emission from a Complete Spectroscopic Survey of Be Stars in h and χ Persei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and H II Emission from a Complete Spectroscopic Survey of Be Stars in h and χ Persei will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1440321