Identifying young stellar objects in nine Large Magellanic Cloud star-forming regions
作者： L. R. Carlson , M. Sewiło , M. Meixner , K. A. Romita , B. Lawton
DOI: 10.1051/0004-6361/201118627
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摘要: We introduce a new set of selection criteria for the identification infrared bright young stellar object (YSO) candidates and apply them to nine Hii regions in Large Magellanic Cloud (LMC), focusing particularly on lower mass missed by most surveys. Data are from Spitzer Space Telescope legacy program SAGE (Surveying Agents Galaxy Evolution; Meixner et al. 2006, AJ, 132, 2268), combined with optical photometry Clouds Photometric Survey (MCPS; Zaritsky 1997, 114, 1002) near-infrared InfraRed Facility (IRSF; Kato 2007, PASJ, 59, 615). choose regions diverse physical size, star formation rates (SFRs), ages. also cover wide range locations surrounding environments LMC. These active star-forming LHA 120-N 11, N 44, N 51, N 105, N 113, N 120, N 144, N 160, N 206. Some have been well-studied (e.g., N11, N44, N160) past, while others (e.g., N51, N144) received little attention. identify 1045 YSO candidates, including 918 never before identified 127 matching previous candidate lists. characterize evolutionary stage properties each using spectral energy distribution (SED) fitter Robitaille (2007, ApJS, 169, 328) estimate functions SFRs region.
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