The Taurus Spitzer Survey: New Candidate Taurus Members Selected Using Sensitive Mid-Infrared Photometry
| Autor: | D. L. Padgett, Catherine Dougados, Karl R. Stapelfeldt, M. Guedel, Paul M. Harvey, Sebastian Wolf, Jillian Tromp, S. E. Strom, C. Baldovin-Saavedra, Nicolas Flagey, S. Guieu, L. M. Rebull, J. L. Monin, Gillian R. Knapp, Lynne A. Hillenbrand, William B. Latter, Tracy L. Huard, Alberto Noriega-Crespo, Dean C. Hines, Kevin Briggs, Misato Fukagawa, Susan Terebey, Neal J. Evans, C. McCabe, Stephen L. Skinner, Lori Allen, A. M. Glauser, John Angione, T. Y. Brooke, Jerome Bouvier, N. Grosso, Sean Carey, Marc Audard, Francois Menard |
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| Přispěvatelé: | Laboratoire d'Astrophysique de Grenoble (LAOG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Physics
010504 meteorology & atmospheric sciences Be star Molecular cloud FOS: Physical sciences Astronomy and Astrophysics Astrophysics 01 natural sciences Planetary nebula Galaxy Carbon star Stars Spitzer Space Telescope Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science 0103 physical sciences Circumstellar dust 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) ComputingMilieux_MISCELLANEOUS 0105 earth and related environmental sciences |
| Zdroj: | Astrophysical Journal Supplement Astrophysical Journal Supplement, American Astronomical Society, 2010, 186, pp.259 |
| ISSN: | 0067-0049 1538-4365 |
| Popis: | We report on the properties of pre-main-sequence objects in the Taurus molecular clouds as observed in 7 mid- and far-infrared bands with the Spitzer Space Telescope. There are 215 previously-identified members of the Taurus star-forming region in our ~44 square degree map; these members exhibit a range of Spitzer colors that we take to define young stars still surrounded by circumstellar dust (noting that ~20% of the bonafide Taurus members exhibit no detectable dust excesses). We looked for new objects in the survey field with similar Spitzer properties, aided by extensive optical, X-ray, and ultraviolet imaging, and found 148 candidate new members of Taurus. We have obtained follow-up spectroscopy for about half the candidate sample, thus far confirming 34 new members, 3 probable new members, and 10 possible new members, an increase of 15-20% in Taurus members. Of the objects for which we have spectroscopy, 7 are now confirmed extragalactic objects, and one is a background Be star. The remaining 93 candidate objects await additional analysis and/or data to be confirmed or rejected as Taurus members. Most of the new members are Class II M stars and are located along the same cloud filaments as the previously-identified Taurus members. Among non-members with Spitzer colors similar to young, dusty stars are evolved Be stars, planetary nebulae, carbon stars, galaxies, and AGN. Accepted to ApJS. Two large online-only figures available with the preprint here: http://web.ipac.caltech.edu/staff/rebull/research.html |
| Databáze: | OpenAIRE |
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