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J/ApJ/721/357      YSOs in the LMC star-forming region N206      (Romita+, 2010)

Young stellar objects in the Large Magellanic Cloud star-forming region N206. Romita K.A., Carlson L.R., Meixner M., Sewilo M., Whitney B., Babler B., Indebetouw R., Hora J.L., Meade M., Shiao B. <Astrophys. J., 721, 357-368 (2010)> =2010ApJ...721..357R
ADC_Keywords: Photometry, infrared ; YSOs ; Magellanic Clouds ; H II regions Keywords: infrared: stars - ISM: individual objects (N206) - Magellanic Clouds - stars: formation - stars: pre-main sequence Abstract: We present analysis of the energetic star-forming region Henize 206 (N206) located near the southern edge of the Large Magellanic Cloud (LMC) based on photometric data from the Spitzer Surveying the Agents of Galaxy Evolution (SAGE-LMC; IRAC 3.6, 4.5, 5.8, 8.0um and MIPS 24um), Infrared Survey Facility near-infrared survey (J, H, Ks), and the Magellanic Clouds Photometric Survey (MCPS UBVI) covering a wavelength range of 0.36-24um. Young stellar object (YSO) candidates are identified based upon their location in infrared color-magnitude space and classified by the shapes of their spectral energy distributions in comparison with a pre-computed grid of YSO models. We identify 116 YSO candidates: 102 are well characterized by the YSO models, predominately Stage I, and 14 may be multiple sources or young sources with transition disks. Careful examination of the individual sources and their surrounding environment allows us to identify a factor of ∼14.5 more YSO candidates than have already been identified. The total mass of these well-fit YSO candidates is ∼520M. We calculate a current star formation rate of 0.27x10-1M/yr/kpc2. The distribution of YSO candidates appears to follow shells of neutral material in the interstellar medium. Description: We take advantage of a rich data set from three surveys. In addition to mid-infrared data from the Spitzer SAGE-LMC (Meixner et al. 2006, Cat J/AJ/132/2268; Whitney et al., 2008, Cat. J/AJ/136/18; Gruendl et al., 2009, Cat. J/ApJS/184/172), we use near-infrared (near-IR) data from the Infrared Survey Facility (IRSF) Magellanic Clouds Point Source Survey (Kato et al. 2007, Cat. II/288), and optical data from the Magellanic Clouds Photometric Survey (MCPS; Zaritsky et al. 1997AJ....114.1002Z). Objects: ------------------------------------------------ RA (2000) DE Designation(s) ------------------------------------------------ 05 31 15.2 -71 03 58 N206 = LHA 120-N 206 ------------------------------------------------ File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 269 102 Flux densities of 102 YSO candidates table2.dat 269 14 Flux densities of transition disk/multiple object candidates table3.dat 90 102 Physical parameters of 102 YSO candidates
See also: II/305 : SAGE LMC and SMC IRAC Source Catalog (IPAC 2009) II/288 : IRSF Magellanic Clouds Point Source Catalog (Kato+ 2007) J/A+A/542/A66 : YSOs on 9 LMC star forming regions (Carlson+, 2012) J/A+A/518/L73 : Youngest massive protostars in the LMC (Sewilo+, 2010) J/AJ/137/3139 : LMC SAGE. New variable evolved stars and YSOs (Vijh+, 2009) J/ApJ/699/150 : Spectral classifications of Massive YSOs in LMC (Seale+, 2009) J/ApJ/707/1417 : HST view of YSOs in the LMC (Vaidya+, 2009) J/ApJS/184/172 : High- and intermediate-mass YSOs in the LMC (Gruendl+, 2009) J/AJ/136/18 : LMC SAGE. New candidate YSOs (Whitney+, 2008) J/AJ/132/2268 : SAGE calibration stars (Meixner+, 2006) Byte-by-byte Description of file: table[12].dat
Bytes Format Units Label Explanations
1- 4 A4 --- Name Source name (<[RCM2010] YNNN> in Simbad) 6- 24 A19 --- SAGE SAGE designation (; preceded by SSTISAGEMA 26 I1 --- PAH [0/1] Indicates presence of PAH emission (0:no PAH emission) (1) 28 I1 --- IRSF [0/1] Indicates multiple IRSF matches (2) 30- 38 F9.4 mJy SU ?=-999.9 MCPS U band flux density 40- 48 F9.4 mJy e_SU ?=-999.9 Error in SU 50- 58 F9.4 mJy SB ?=-999.9 MCPS B band flux density 60- 68 F9.4 mJy e_SB ?=-999.9 Error in SB 70- 78 F9.4 mJy SV ?=-999.9 MCPS V band flux density 80- 88 F9.4 mJy e_SV ?=-999.9 Error in SV 90- 98 F9.4 mJy SI ?=-999.9 MCPS I band flux density 100-108 F9.4 mJy e_SI ?=-999.9 Error in SI 110-118 F9.4 mJy SJ ?=-999.9 IRSF survey J band flux density 120-128 F9.4 mJy e_SJ ?=-999.9 Error in SJ 130-138 F9.4 mJy SH ?=-999.9 IRSF survey H band flux density 140-148 F9.4 mJy e_SH ?=-999.9 Error in SH 150-158 F9.4 mJy SK ?=-999.9 IRSF survey KS band flux density 160-168 F9.4 mJy e_SK ?=-999.9 Error in SK 170-178 F9.4 mJy S3.6 ?=-999.9 Spitzer/IRAC 3.6 micron band flux density 180-188 F9.4 mJy e_S3.6 ?=-999.9 Error in S3.6 190-198 F9.4 mJy S4.5 ?=-999.9 Spitzer/IRAC 4.5 micron band flux density 200-208 F9.4 mJy e_S4.5 ?=-999.9 Error in S4.5 210-218 F9.4 mJy S5.8 ?=-999.9 Spitzer/IRAC 5.8 micron band flux density 220-228 F9.4 mJy e_S5.8 ?=-999.9 Error in S5.8 230-238 F9.4 mJy S8.0 ?=-999.9 Spitzer/IRAC 8.0 micron band flux density 240-248 F9.4 mJy e_S8.0 ?=-999.9 Error in S8.0 250-258 F9.4 mJy S24 ?=-999.9 Spitzer/MIPS 24 micron band flux density 260-268 F9.4 mJy e_S24 ?=-999.9 Error in S24 269 A1 --- l_S24 [u] u: S24 is an absolute upper limit and was fit as such in the SED fitter
Note (1): Flag as follows: 1 = the presence of PAH emission is prevalent in the source's SED. Errors in IRAC bands adjusted to 20%, 10%, 30%, and 40% for 3.6, 4.5, 5.8, and 8 micron bands respectively in order to account for the presence of PAH emission in their SEDs. 0 = no PAH emission is present. Note (2): Flag as follows: 1 = there are multiple IRSF sources within the aperture of the IRAC source. Doubled Near-IR errors due to the presence of multiple IRSF point sources within a single IRAC aperture. 0 = there is either only one or no IRSF sources that correspond with the IRAC source.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 4 A4 --- Name Source name (YNNN) 6- 9 F4.2 -- chi2 Indicates wellness of model fit (1) 11- 13 I3 -- nfits Number of Fits 15- 18 F4.2 Msun M* Average mass of YSO 20- 23 F4.2 Msun e_M* ? Standard deviation mass of YSO (2) 25- 33 E9.3 Lsun L* Average luminosity of YSO 35- 43 E9.3 Lsun e_L* ? Standard deviation luminosity of YSO (2) 45- 53 E9.3 Msun Menv Average mass of envelope 55- 63 E9.3 Msun e_Menv ? Standard deviation of envelope mass 65- 73 E9.3 Msun Mdsk Average disk mass 75- 83 E9.3 Msun e_Mdsk ? Standard deviation of disk mass 85- 90 A6 --- Stage Evolutionary Stage
Note (1): See Section 4.1 of the paper for details concerning how this value was determined. Note (2): Blanks indicate "NaN" values.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 05-Jul-2012
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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