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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
A wiyn near-infrared investigation of three massive star-forming regions
Astronomical Journal, Volume 135, No. 6, Year 2008
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Description
We investigate three embedded massive star-forming regions using the Near-Infrared Imager (NIRIM) camera on the 3.5 m WIYN telescope. We report J-, H-, and K′-band photometry in the clusters AFGL437, AFGL5180, and AFGL5142, and use these results to probe the stellar populations, extinction, and ages of the clusters. We find that all three clusters suffer significant extinction (AK 1), have ages ≤ 5 Myr, and are actively forming stars. The background-corrected percentages of cluster members identified as young stellar objects (YSOs) in AFGL437, AFGL5180, and AFGL5142 are 58% 15%, 75% 10%, and 78% 15%, respectively. The slopes of the K-band luminosity functions (KLFs) for these clusters are 0.3-0.4, similar to that in other young clusters. Both the percentage of YSOs and KLF slopes of these clusters indicate that their ages are <5 Myr. We investigate the consequences of incompleteness in areas of high background emission and stellar density, and find that it contributes significant uncertainty to the determination of cluster properties. We find that age determination using only near-IR (NIR) photometry has an uncertainty of 3 Myr. © 2008. The American Astronomical Society. All rights reserved.
Authors & Co-Authors
Devine, K. E.
United States, Madison
University of Wisconsin-madison
Churchwell, Edward B.
United States, Madison
University of Wisconsin-madison
Indebetouw, Rémy
United States, Charlottesville
University of Virginia
Watson, Christer
United States, North Manchester
Manchester University
Crawford, S.
South Africa, Cape Town
South African Astronomical Observatory
Statistics
Citations: 8
Authors: 5
Affiliations: 4
Identifiers
Doi:
10.1088/0004-6256/135/6/2095
ISSN:
00046256
Research Areas
Environmental