Physics – Optics
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21642202a&link_type=abstract
American Astronomical Society, AAS Meeting #216, #422.02; Bulletin of the American Astronomical Society, Vol. 41, p.833
Physics
Optics
Scientific paper
We have used the Palomar Observatory Adaptive Optics system with a laser guide star and the PHARO instrument to image the Spitzer-observed young cluster IRAS 20050+2720 in the J, H, and Ks bands. Our observations cover a region 99 x 46 arcsec in size at a spatial resolution of 0.1 arcsec, corresponding to 70 AU at the distance of IRAS 20050. None of the 5 Spitzer-identified class I sources in the field showed multiple components at this resolution. However, 37% of the 8 Spitzer-identified class II sources in the field were resolved into binaries ranging in projected separation from 113 AU to 1320 AU. The Ks-band imagery reveals a population of at least 9 low mass objects in the inner 0.05 pc. A protostellar bipolar scattered light nebula with a length of 1600 AU was resolved near the cluster center. We discuss these results and derive the physical properties of the nebula using published protostellar radiative transfer models.
Adams Joseph D.
Bouchez Antonin H.
Dekany Richard George
Gutermuth Robert A.
Herter Terry L.
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