Campanas observations of 31 southern sources ?
نویسندگان
چکیده
the date of receipt and acceptance should be inserted later Abstract. We present sensitive high resolution near in-frared (NIR) broad band (J, H, and K) observations of a sample of 31 Star Forming Regions (SFRs) which contain H 2 O and OH maser sources. The observations are aimed at the detection and characterization of Young Stellar Objects (YSOs) which may be the source of excitation of the maser emission. In spite of the large number of sources detected in the regions, using positional coincidence and NIR colours we are able to reliably identify K-band sources related to the masing gas in a large fraction of the observed regions. The NIR infrared sources selected from close positional coincidence with the maser show strong NIR excesses and most probably represent the YSOs still embedded in their parental cocoon where the maser emission occurs.
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1Dept. of Physics, CSUSB, 5500 University Parkway, San Bernardino, CA 92407 2Johns Hopkins University/Applied Physics Laboratory, 11100 Johns Hopkins Rd, Laurel, MD 20723 3The Observatories of the Carnegie Institute of Washington, Las Campanas Observatory, Colina El Pino, Casilla 601, La Serena, Chile 4Planetary Astronomy Group, Astromaterials Research and Exploration Science, NASA Johnson Spac...
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