J/A+A/572/A89 Young stellar object candidates toward Orion (Sanchez+, 2014)
Young stellar object candidates toward the Orion region selected from GALEX.
Sanchez N., Gomez de Castro A.I., Lopez-Martinez F., Lopez-Santiago J.
<Astron. Astrophys. 572, A89 (2014)>
=2014A&A...572A..89S 2014A&A...572A..89S
ADC_Keywords: Stars, pre-main sequence ; YSOs ; Photometry, ultraviolet
Keywords: stars: low-mass - stars: pre-main-sequence -
stars: variables: T Tauri, Herbig Ae/Be - ultraviolet: stars
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 1555174 ultraviolet
sources that were cross-matched with other catalogs (2MASS, UCAC4,
SDSS, DENIS, CMC15, and WISE) to produce a list of 290717 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.
Description:
We have used the GALEX Point Source Catalog to search for YSOs
covering roughly 400 square degrees toward the Orion star-forming
region. We crossed all the UV sources with other catalogs: 2MASS,
UCAC4, SDSS, DENIS, CMC15 and WISE. Using different color selection
criteria we identified 111 YSO candidates (81 are new identifications)
showing both ultraviolet and infrared excesses. Here we present all
the photometric data for this candidates.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 351 111 Photometric data for the YSO candidates
table2.dat 67 65 Properties derived from the best SED fits
--------------------------------------------------------------------------------
See also:
B/denis : The DENIS database (DENIS Consortium, 2005)
I/327 : Carlsberg Meridian Catalog 15 (CMC15) (CMC, 2011)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/328 : AllWISE Data Release (Cutri+ 2013)
V/139 : SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)
J/A+A/508/1313 : Orion pre-main sequence RIJH light curves (Frasca+, 2009)
J/AJ/144/192 : Spitzer survey of Orion A and B. YSO catalog (Megeath+, 2012)
J/ApJ/646/297 : Spitzer obs. of pre-main-sequence stars (Rebull+, 2006)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 17 A17 --- 2MASS Source ID from 2MASS (JHHMMSSss+DDMMSSs)
19- 27 F9.6 deg RAdeg Right ascension (J2000)
29- 38 F10.6 deg DEdeg Declination (J2000)
40- 46 F7.3 deg GLON Galactic longitude
48- 54 F7.3 deg GLAT Galactic latitude
56- 61 F6.3 mag FUVmag ? FUV magnitude from GALEX
63- 70 F8.6 mag e_FUVmag ? rms uncertainty in FUVmag
72- 78 F7.4 mag NUVmag NUV magnitude from GALEX
80- 87 F8.6 mag e_NUVmag rms uncertainty in NUVmag
89- 94 F6.3 mag umag ? u magnitude from SDSS
96-101 F6.4 mag e_umag ? rms uncertainty in umag
103-108 F6.3 mag BmagU ? B magnitude from UCAC4
110-113 F4.2 mag e_BmagU ? rms uncertainty in BmagU
116-121 F6.3 mag gmagU ? g magnitude from UCAC4
123-126 F4.2 mag e_gmagU ? rms uncertainty in gmagU
129-134 F6.3 mag gmag ? g magnitude from SDSS
136-141 F6.4 mag e_gmag ? rms uncertainty in gmag
143-148 F6.3 mag VmagU ? V magnitude from UCAC4
150-153 F4.2 mag e_VmagU ? rms uncertainty in VmagU
156-161 F6.3 mag rmagU ? r magnitude from UCAC4
163-166 F4.2 mag e_rmagU ? rms uncertainty in rmagU
169-174 F6.3 mag rmag ? r magnitude from SDSS
176-181 F6.4 mag e_rmag ? rms uncertainty in rmag
183-188 F6.3 mag rmagC ? r magnitude from CMC15
190-195 F6.4 mag e_rmagC ? rms uncertainty in rmagC
197-202 F6.3 mag imagU ? i magnitude from UCAC4
204-207 F4.2 mag e_imagU ? rms uncertainty in imagU
210-215 F6.3 mag imag ? i magnitude from SDSS
217-222 F6.4 mag e_imag ? rms uncertainty in imag
224-229 F6.3 mag ImagD ? I magnitude from DENIS
231-234 F4.2 mag e_ImagD ? rms uncertainty in ImagD
237-242 F6.3 mag zmag ? z magnitude from SDSS
244-249 F6.4 mag e_zmag ? rms uncertainty in zmag
251-256 F6.3 mag Jmag J magnitude from 2MASS
258-262 F5.3 mag e_Jmag rms uncertainty in Jmag
264-269 F6.3 mag Hmag H magnitude from 2MASS
271-275 F5.3 mag e_Hmag rms uncertainty in Hmag
277-282 F6.3 mag Kmag Ks magnitude from 2MASS
284-288 F5.3 mag e_Kmag rms uncertainty in Kmag
290-295 F6.3 mag W1mag ? W1 magnitude from WISE
297-301 F5.3 mag e_W1mag ? rms uncertainty in W1mag
303-308 F6.3 mag W2mag ? W2 magnitude from WISE
310-314 F5.3 mag e_W2mag ? rms uncertainty in W2mag
316-321 F6.3 mag W3mag ? W3 magnitude from WISE
323-327 F5.3 mag e_W3mag ? rms uncertainty in W3mag
329-333 F5.3 mag W4mag ? W4 magnitude from WISE
335-339 F5.3 mag e_W4mag ? rms uncertainty in W4mag
341-344 A4 --- Type Object type (G1)
347-351 A5 --- Ref Reference for known candidates (G2)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 17 A17 --- 2MASS Source ID from 2MASS (JHHMMSSss+DDMMSSs)
19- 25 F7.3 deg GLON Galactic longitude
27- 33 F7.3 deg GLAT Galactic latitude
35- 38 I4 K Teff Effective temperature (1)
40- 44 F5.3 Lsun Lbol Bolometric luminosity
46- 51 F6.4 Lsun e_Lbol rms uncertainty in Lbol
53- 56 F4.2 mag Av Visual extinction
58- 61 A4 --- Type Object type (G1)
63- 67 A5 --- Ref Reference for known candidates (G2)
--------------------------------------------------------------------------------
Note (1): Uncertainty in temperature values is always 100K.
--------------------------------------------------------------------------------
Global notes:
Note (G1): Object types according to the references as follows:
AeBe = Herbig Ae/Be star
CTTS = Classical T Tauri star
TTS = T Tauri star
YSO = Young stellar object
Note (G2): Codes for references of known candidates as follows:
Bri05 = Briceno et al. (2005AJ....129..907B 2005AJ....129..907B, Cat. J/AJ/129/907)
Cla05 = Clarke et al. (2005MNRAS.363.1111C 2005MNRAS.363.1111C, Cat. J/MNRAS/363/1111)
Her07 = Hernandez et al. (2007ApJ...671.1784H 2007ApJ...671.1784H, Cat. J/ApJ/671/1784)
Lee07 = Lee & Chen (2007ApJ...657..884L 2007ApJ...657..884L, Cat. J/ApJ/657/884)
Lee09 = Lee & Chen (2009ApJ...694.1423L 2009ApJ...694.1423L)
Man06 = Manoj et al. (2006ApJ...653..657M 2006ApJ...653..657M, Cat. J/ApJ/653/657)
Meg12 = Megeath et al. (2012AJ....144..192M 2012AJ....144..192M, Cat. J/AJ/144/192)
She04 = Sherry et al. (2004AJ....128.2316S 2004AJ....128.2316S, Cat. J/AJ/128/2316)
Tak10 = Takita et al. (2010A&A...519A..83T 2010A&A...519A..83T, Cat. J/A+A/519/A83)
Tor95 = Torres et al. (1995AJ....109.2146T 1995AJ....109.2146T)
Van11 = van Eyken et al. (2011AJ....142...60V 2011AJ....142...60V, Cat. J/AJ/142/60)
--------------------------------------------------------------------------------
Acknowledgements:
Nestor Sanchez, nestorsa(at)ucm.es
(End) Nestor Sanchez [UCM, Spain], Patricia Vannier [CDS] 31-Oct-2014