A Search for Pre-Main Sequence objects near the Taurus and Upper Scorpius Star-Forming Regions

Details A Search for Pre-Main Sequence objects near the Taurus and Upper Scorpius Star-Forming Regions A Search for Pre-Main Sequence objects near the Taurus and Upper Scorpius Star-Forming Regions

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sfet.confe..32s&link_type=abstract

"Star Formation in the Era of Three Great Observatories, meeting abstracts from the conference held July 13-15, 2005 in Cambridg

Computer Science

Scientific paper

We are conducting a wide-field (˜200 square degrees) B,R,I photometric monitoring campaign to identify new young objects towards both the Taurus (1 Myr) and Upper Scorpius (3-5 Myr) star-forming regions. Candidates were chosen for follow-up optical spectroscopy to confirm membership and youth based on large-amplitude variability and/or placement on a color-magnitude diagram. Our primary goals are 1) to assess the mass and spatial distributions of young objects in the outer parts of each association and 2) to study the actvity in young low mass objects and properties of associated circumstellar disks through analysis of H-alpha spectral line profiles and 2MASS colors for confirmed new members. Comparison of results between the two regions will allow us to study evolutionary effects. Our work will provide insight into several aspects of star formation, including the universality of the low mass/substellar IMF, the kinematics of stars as they are forming in their parental molecular clouds, and the prescence/absence of age and mass segregation from central cores to the more extended areas within a cluster. At this conference we will present results from the completed photometric monitoring part of our survey for both clusters and from our initial spectroscopic efforts in Taurus.

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