2013ApJ...778...15S


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.16CEST17:39:15

2013ApJ...778...15S - Astrophys. J., 778, 15 (2013/November-3)

Surveying the Agents of Galaxy Evolution in the tidally stripped, low metallicity Small Magellanic Cloud (SAGE-SMC). III. Young stellar objects.

SEWILO M., CARLSON L.R., SEALE J.P., INDEBETOUW R., MEIXNER M., WHITNEY B.A., ROBITAILLE T.P., OLIVEIRA J.M., GORDON K., MEADE M.R., BABLER B.L., HORA J.L., BLOCK M., MISSELT K., VAN LOON J.Th., CHEN C.-H.R., CHURCHWELL E. and SHIAO B.

Abstract (from CDS):

The Spitzer Space Telescope Legacy Program SAGE-SMC allows global studies of resolved stellar populations in the SMC in a different environment than our Galaxy. Using the SAGE-SMC IRAC (3.6-8.0 µm) and MIPS (24 and 70 µm) catalogs and images combined with near-infrared (JHKs) and optical (UBVI) data, we identified a population of ∼1000 intermediate- to high-mass young stellar objects (YSOs) in the SMC (three times more than previously known). Our method of identifying YSO candidates builds on the method developed for the Large Magellanic Cloud by Whitney et al. with improvements based on what we learned from our subsequent studies and techniques described in the literature. We perform (1) color-magnitude cuts based on five color-magnitude diagrams (CMDs), (2) visual inspection of multi-wavelength images, and (3) spectral energy distribution (SED) fitting with YSO models. For each YSO candidate, we use its photometry to calculate a measure of our confidence that the source is not a non-YSO contaminant, but rather a true YSO, based on the source's location in the color-magnitude space with respect to non-YSOs. We use this CMD score and the SED fitting results to define two classes of sources: high-reliability YSO candidates and possible YSO candidates. We found that, due to polycyclic aromatic hydrocarbon emission, about half of our sources have [3.6]-[4.5] and [4.5]-[5.8] colors not predicted by previous YSO models. The YSO candidates are spatially correlated with gas tracers.

Abstract Copyright:

Journal keyword(s): circumstellar matter - galaxies: dwarf - infrared: stars - Magellanic Clouds - stars: formation - stars: pre-main sequence

VizieR on-line data: <Available at CDS (J/ApJ/778/15): table1.dat table2.dat table3.dat table5.dat table6.dat table7.dat table8.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 17

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Number of rows : 17

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 [VV2006] J003850.8-731053 Sy1 00 38 50.8 -73 10 53   17.741 17.694     ~ 7 0
2 MSX SMC 014 Mi* 00 46 16.33 -74 11 13.6         19.872 ~ 12 0
3 LHA 115-S 6 s*b 00 46 55.0295095056 -73 08 34.139503944 12.14 13.02 12.91   12.52 B0/0.5[e] 78 1
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9793 1
5 2XMM J005719.6-722534 AGN 00 57 19.8187979237 -72 25 34.075049942           ~ 5 0
6 NGC 346 Cl* 00 59 05.090 -72 10 33.24           ~ 458 0
7 SNR B0057-72.2 SNR 00 59 27.40 -72 10 10.7   12.37 12.57     ~ 222 0
8 LHA 115-N 76B Em* 01 03 07.73 -72 06 26.9     14.1     ~ 25 0
9 LHA 115-N 84 HII 01 14 27.7 -73 12 51           ~ 60 0
10 LHA 115-N 88 HII 01 24 08.1 -73 09 04           ~ 68 1
11 NGC 602 Cl* 01 29 32.133 -73 33 38.13     13.018     ~ 81 1
12 2MASX J01352962-7336046 G 01 35 29.5839984831 -73 36 05.063568116   16.08   14.98   ~ 4 0
13 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5935 1
14 NAME Magellanic Bridge HI 03 11 -77.5           ~ 365 1
15 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15356 1
16 NAME Lockman Hole reg 10 45 00.0 +58 00 00           ~ 760 0
17 NAME Local Group GrG ~ ~           ~ 7264 0

    Equat.    Gal    SGal    Ecl

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2021.05.16-17:39:15

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