Protostars and Planets VI, Heidelberg, July 15-20, 2013
SPECTROSCOPIC SURVEY OF CIRCUMSTELLAR DISKS IN ORION
Contreras, Maria (Instituto de Astronomia - Ensenada, Universidad Nacional Autonoma de Mexico, Mexico)
Hernandez, Jesus (Centro de Investigaciones de Astronomia, Venezuela)
Olguin, Lorenzo (Departamento de Investigacion en Fisica, Universidad de Sonora, Mexico)
Briceno, Cesar (Centro de Investigaciones de Astronomia, Venezuela)
As a second stage of a project focused on characterizing candidate stars bearing a circumstellar disk in Orion, we present a spectroscopic follow-up of a set of about 170 bright stars. The present set of stars was selected by their optical (UBVRI) and infrared behavior in different color-color and color-magnitude diagrams. Observations were carried out at the Observatorio Astronomico Nacional located at the Sierra San Pedro Martir in B.C., Mexico and at the Observatorio Guillermo Haro in Cananea, Sonora, Mexico. Low-resolution spectra were obtained for all candidates in the sample. Using the SPTCLASS code, we have obtained spectral types and equivalent widths of the Li I 6707 and Halpha lines for each one of the stars. This project is a cornerstone of a large scale survey aimed to obtain stellar parameters in a homogeneous way using spectroscopic data. This work was partially supported by UNAM-PAPIIT grant IN-109311.
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