Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21541434k&link_type=abstract
American Astronomical Society, AAS Meeting #215, #414.34; Bulletin of the American Astronomical Society, Vol. 42, p.259
Astronomy and Astrophysics
Astronomy
Scientific paper
The W3,4,5 H II regions (d 2kpc) are well known sites for massive star formation and good targets to investigate the possibility of triggered star formation. We have performed an optical imaging survey of the W3,4,5 complex to study the star formation history, initial mass function, and circumstellar disk evolution of young stars formed in H II regions, which might have been triggered. Here we present an update from our optical imaging survey and preliminary results from our spectroscopic survey of the W3 star forming region. Imaging survey data was obtained using the 90Prime wide-field imager at the Bok 2.3m telescope. We selected candidate pre-main sequence stars based on the location in V-I, V color-magnitude diagrams compared to model isochrones. We have also utilized infra-red data using the 2MASS catalog and the Spitzer Space Telescope, as well as X-ray data from the Chandra X-ray Observatory to help select candidate young stars. We have obtained about 1800 optical spectra of candidate young stars using a multi-fiber spectrograph, the Hectospec, at the MMT 6.5m telescope. Here we present spectroscopically confirmed young stars, infra-red excess sources, and spatial distribution of both confirmed and candidate young stars in the W3 star forming region.
Jose Jubin
Kim Jinyoung Serena
Meyer Michael R.
Sherry William Henry
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