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J/MNRAS/394/900   Infrared colors in HII region Sh2-173    (Cichowolski+, 2009)

Unveiling the birth and evolution of the HII region Sh2-173. Cichowolski S., Romero G.A., Ortega M.E., Cappa C.E., Vasquez J. <Mon. Not. R. Astron. Soc., 394, 900-915 (2009)> =2009MNRAS.394..900C
ADC_Keywords: H II regions ; Photometry, infrared Keywords: stars: formation - H II regions - ISM: individual: Sh2-173 - ISM: kinematics and dynamics Abstract: Based on a multiwavelength study, the interstellar medium around the HII region Sh2-173 has been analysed. The ionized region is clearly detected in the optical and the radio continuum images. The analysis of the H i data shows a region of low emissivity that has an excellent morphological correlation with the radio continuum emission. The HII region is partially bordered by a photodissociation region, which, in turn, is encircled by a molecular structure. The HI and CO structures related to Sh2-173 are observed in the velocity ranges from -25 to -31km/s and from -27 to -39km/s, respectively. Description: Radio continuum data at 408 and 1420MHz, as well as 21cm spectral line data, were obtained using the Dominion Radio Astrophysical Observatory (DRAO) interferometer as part of the Canadian Galactic Plane Survey (CGPS) (Taylor et al. 2003, Cat. B/cgps). Radio continuum surveys at 325MHz (WENSS) (Rengelink et al., 1997, Cat. J/A+AS/124/259), 2695MHz (Fuerst et al., 1990A&AS...85..691F) and 4850MHz (Condon et al., 1994AJ....107.1829C) were also used in this work. Mid-IR data were taken from the Midcourse Space Experiment (MSX) Galactic Plane Survey (Price et al., 2001AJ....121.2819P), and near-IR data were obtained from the 2MASS All-Sky Point Source Catalog (Skrutskie et al. 2006, Cat. VII/233). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table6.dat 110 46 YSO candidates projected on to the molecular Clouds A and B
See also: B/cgps : Log of CGPS exposures (Taylor+, 2003-) VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006) V/114 : MSX6C Infrared Point Source Catalog (Egan+ 2003) II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) J/A+AS/124/259 : Westerbork Northern Sky Survey I. (Rengelink+ 1997) Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 3 A3 --- Sel Selection criteria for 2MASS YSO candidates (1) 5- 6 I2 --- [CRO2009] Sequential number 8- 29 A22 --- Name IRAS or 2MASS name 31- 37 F7.3 deg GLON Galactic longitude 39- 44 F6.3 deg GLAT Galactic latitude 46 A1 --- l_Jmag Limit flag on Jmag 47- 52 F6.3 mag Jmag ? 2MASS J magnitude 54 A1 --- l_Hmag Limit flag on Hmag 55- 60 F6.3 mag Hmag ? 2MASS H magnitude 62- 68 F7.4 mag Kmag ? 2MASS K magnitude 69 A1 --- l_H-K Limit flag on H-K 70- 74 F5.3 mag H-K ? 2MASS H-K colour index 76 A1 --- l_J-H Limit flag on J-H 77- 81 F5.3 mag J-H ? 2MASS J-H colour index 83- 84 A2 --- Gr Group location in Fig. 9 (g1 to g4) 86- 89 F4.2 Jy F12 ? IRAS 12um flux 91- 94 F4.2 Jy F25 ? IRAS 25um flux 96- 99 F4.2 Jy F60 ? IRAS 60um flux 101-105 F5.2 Jy F100 ? IRAS 100um flux 107 A1 --- l_LIRAS [~] Limit flag on LIRAS 108-110 I3 solLum LIRAS ? IRAS luminosity for D=2.5kpc
Note (1): Selection criteria for 2MASS YSO candidates: P1 = (J-H)>0.835, (J-H)<1.7(H-K)-0.087 P1+ = 1.135<(J-H)<1.435, (J-H)>1.7(H-K)-0.087, (J-H)<1.7(H-K)+0.3685, K>14.5 P2 = (J-H)L<1.7(H-K)-0.087, (H-K)>0.91 (subscript 'L' indicates a lower limit) P3 = (H-K)L>0.91 (subscript 'L' indicates a lower limit)
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 27-Oct-2009
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