Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21933708e&link_type=abstract
American Astronomical Society, AAS Meeting #219, #337.08
Astronomy and Astrophysics
Astronomy
Scientific paper
We have obtained high-resolution (R = 33000) echelle spectra for 18 stars in the direction of the Serpens Main Cluster using the double Magellan Inamori Kyocera Echelle (MIKE) spectrograph on the Clay 6.5m telescope. These objects have been previously observed as part of a comprehensive, mid-resolution optical spectroscopic survey of candidate young stellar objects (YSOs) in Serpens Main. Eleven of the echelle targets are known YSOs, including 2 transition disk objects. The remaining objects are unclassified sources. Signatures of youth and surface gravity will verify the nature of these objects. Accretion rates will be estimated from the hydrogen, He I, O I, and Ca II IR triplet emission lines. These spectra will also be used to determine radial velocities and infer the average velocity and velocity dispersion of the cluster. These data are part of a larger project to investigate the star forming history, initial mass function and disk evolution for YSOs in the Serpens molecular cloud.
Erickson Kristen
Kim Jongsoo
Meyer Martin
Wilking Burkhard
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