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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 606656.0, MPI für Astronomie / Publikationen_mpia
The SAGE-Spec Spitzer Legacy programme: the life-cycle of dust and gas in the Large Magellanic Cloud - Point source classification I
Authors:Woods, P. M.; Oliveira, J. M.; Kemper, F.; van Loon, J. T.; Sargent, B. A.; Matsuura, M.; Szczerba, R.; Volk, K.; Zijlstra, A. A.; Sloan, G. C.; Lagadec, E.; McDonald, I.; Jones, O.; Gorjian, V.; Kraemer, K. E.; Gielen, C.; Meixner, M.; Blum, R. D.; Sewiło, M.; Riebel, D.; Shiao, B.; Chen, C. H. R.; Boyer, M. L.; Indebetouw, R.; Antoniou, V.; Bernard, J. P.; Cohen, M.; Dijkstra, C.; Galametz, M.; Galliano, F.; Gordon, K. D.; Harris, J.; Hony, S.; Hora, J. L.; Kawamura, A.; Lawton, B.; Leisenring, J. M.; Madden, S.; Marengo, M.; McGuire, C.; Mulia, A. J.; O'Halloran, B.; Olsen, K.; Paladini, R.; Paradis, D.; Reach, W. T.; Rubin, D.; Sandstrom, K.; Soszyński, I.; Speck, A. K.; Srinivasan, S.; Tielens, A. G. G. M.; van Aarle, E.; van Dyk, S. D.; van Winckel, H.; Vijh, U. P.; Whitney, B.; Wilkins, A. N.
Date of Publication (YYYY-MM-DD):2011
Journal Abbrev.:Monthly Notices of the Royal Astronomical Society
Issue / Number:3
Start Page:1597
End Page:1627
Audience:Not Specified
Abstract / Description:We present the classification of 197 point sources observed with the Infrared Spectrograph in the SAGE-Spec Legacy programme on the Spitzer Space Telescope. We introduce a decision-tree method of object classification based on infrared spectral features, continuum and spectral energy distribution shape, bolometric luminosity, cluster membership and variability information, which is used to classify the SAGE-Spec sample of point sources. The decision tree has a broad application to mid-infrared spectroscopic surveys, where supporting photometry and variability information are available. We use these classifications to make deductions about the stellar populations of the Large Magellanic Cloud and the success of photometric classification methods. We find 90 asymptotic giant branch (AGB) stars, 29 young stellar objects, 23 post-AGB objects, 19 red supergiants, eight stellar photospheres, seven background galaxies, seven planetary nebulae, two H
Free Keywords:techniques: spectroscopic; surveys; galaxies: individual: LMC; Magellanic Clouds; infrared: galaxies; infrared: stars
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
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