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Young stellar object candidates toward the Orion region selected from GALEX

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Sanchez, Nestor and Gómez de Castro, Ana Inés and López-Martinez, Fátima and López-Santiago, Javier (2014) Young stellar object candidates toward the Orion region selected from GALEX. Astronomy & Astrophysics, 572 (A89). ISSN 0004-6361

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Official URL: http://www.aanda.org/articles/aa/abs/2014/12/aa24629-14/aa24629-14.html




Abstract

We analyze 359 ultraviolet tiles from. the All Sky Imaging Survey of the space mission GALEX covering roughly 400 square degrees toward the Orion star-forming region. There are a total of 1 555 174 ultraviolet sources that were cross-matched with other catalogs (2MASS, UCAC4, SDSS, DENIS, CMC15, and WISE) to produce a list of 290 717 reliable sources with a wide range of photometric information. Using different color selection criteria, we identify 111 young stellar object candidates showing both ultraviolet and infrared excesses, of which 81 are new identifications. We discuss the spatial distribution, the spectral energy distributions, and other physical properties of these stars. Their properties are, in general, compatible with those expected for T Tauri stars. This population of TTS candidates is widely dispersed around the Orion molecular cloud.


Item Type:Article
Uncontrolled Keywords:stars: low-mass – stars: pre-main-sequence – stars: variables: T Tauri, Herbig Ae/Be – ultraviolet: stars
Subjects:Sciences > Mathematics > Astrophysics
ID Code:28369
Deposited On:16 Feb 2015 10:15
Last Modified:05 Mar 2015 09:20

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