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Title:
High-resolution H and K mapping of W51
Authors:
Little, Stephen J.; Gullixson, Craig; Dietz, R. D.; Hackwell, John A.; Gehrz, R. D.; Grasdalen, Gary L.
Affiliation:
AA(Bentley College, Waltham, MA), AB(Lowell Observatory, Flagstaff, AZ), AC(Northern Colorado, University, Greeley, CO), AD(Aerospace Corp., Space Sciences Laboratory, Los Angeles, CA), AE(Minnesota, University, Minneapolis)
Publication:
Astronomical Journal (ISSN 0004-6256), vol. 97, June 1989, p. 1716-1720. Research supported by USAF, NSF, NASA, and University of Minnesota. (AJ Homepage)
Publication Date:
06/1989
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
H II REGIONS, HIGH RESOLUTION, MAPPING, NEAR INFRARED RADIATION, CHARGE COUPLED DEVICES, EARLY STARS, MOLECULAR CLOUDS
DOI:
10.1086/115110
Bibliographic Code:
1989AJ.....97.1716L

Abstract

The H-II region W51 has been mapped in the near-infrared H and K wavebands with a resolution of about 6 arcsec over an area of about 14 sq arcsec. The W51 IRS 1 source has been resolved into six components, and an arc-like extension of small H-II regions is found that seems to parallel the edge of the molecular cloud. Measurements of the fluxes and extinctions of these sources are presented. A close correspondence is noted between the present K maps and the radio maps of Scott (1978).

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