Access to Astronomical Catalogues

← Click to display the menu
J/A+A/600/A93       Multiwavalenth fluxes of RCW120          (Figueira+, 2017)

Star formation towards the Galactic HII region RCW120. Herschel observations of compact sources. Figueira M., Zavagno A., Deharveng L., Russeil D., Anderson L.D., Men'shchikov A., Schneider N., Hill T., Motte F., Mege P., Leleu G., Roussel H., Bernard J-P., Traficante A., Paradis D., Tige J., Andre P., Bontemps S., Abergel A. <Astron. Astrophys. 600, A93 (2017)> =2017A&A...600A..93F (SIMBAD/NED BibCode)
ADC_Keywords: H II regions ; Stars, early-type ; YSOs ; Photometry, infrared Keywords: H II regions - stars: formation - ISM: individual objects: RCW 120 Abstract: The expansion of HII regions can trigger the formation of stars. An overdensity of young stellar objects (YSOs) is observed at the edges of HII regions but the mechanisms that give rise to this phenomenon are not clearly identified. Moreover, it is difficult to establish a causal link between HII-region expansion and the star formation observed at the edges of these regions. A clear age gradient observed in the spatial distribution of young sources in the surrounding might be a strong argument in favor of triggering. We have observed the Galactic HII region RCW120 with Herschel PACS and SPIRE photometers at 70, 100, 160, 250, 350 and 500um. We produced temperature and H2 column density maps and use the getsources algorithm to detect compact sources and measure their fluxes at Herschel wavelengths. We have complemented these fluxes with existing infrared data. Fitting their spectral energy distributions (SEDs) with a modified blackbody model, we derived their envelope dust temperature and envelope mass. We computed their bolometric luminosities and discuss their evolutionary stages. The Herschel data, with their unique sampling of the far infrared domain, have allowed us to characterize the properties of compact sources observed towards RCW120 for the first time. We have also been able to determine the envelope temperature, envelope mass and evolutionary stage of these sources. Using these properties we have shown that the density of the condensations that host star formation is a key parameter of the star-formation history, irrespective of their projected distance to the ionizing stars. Description: Table A1 presents the Herschel fluxes for the sample of 35 sources discussed in the paper complemented with the 2MASS, GLIMPSE and MISPGAL catalogues. Column 1 gives an identification number. Columns 2 and 3 are the coordinates according to the getsources catalog. Columns 4 to 11 are the fluxes from the 2MASS All-Sky Point Source Catalog, GLIMPSE I Spring '07 Catalog (highly reliable) and the MIPSGAL catalog (in mJy). Columns 12 to 17 are the Herschel fluxes from the getsources catalog (in Jy). No scaling factor or color-corrections were applied. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tablea1.dat 120 35 Photometric parameters for the 35 Herschel sources
See also: II/293 : GLIMPSE Source Catalog (I + II + 3D) (IPAC 2008) J/A+A/496/177 : JHKs and GLIMPSE photometry of RCW 120 (Deharveng+, 2009) J/AJ/149/64 : MIPSGAL 24µm point source catalog (Gutermuth+, 2015) Byte-by-byte Description of file: tablea1.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Identification number 5- 13 F9.5 deg RAdeg Right ascension (J2000) 15- 23 F9.5 deg DEdeg Declination (J2000) 25- 28 F4.2 mJy FJ ? 2MASS J-band flux 29 A1 --- n_FJ [d] Note for non-measured flux (1) 30- 34 F5.2 mJy FH ? 2MASS H-band flux 35 A1 --- n_FH [d] Note for non-measured flux (1) 36- 41 F6.2 mJy FKs ? 2MASS Ks-band flux 42 A1 --- n_FKs [d] Note for non-measured flux (1) 43- 48 F6.2 mJy F3.6 ? GLIMPSE IRAC 3.6-micron flux 49 A1 --- n_F3.6 [d] Note for non-measured flux (1) 50- 55 F6.2 mJy F4.5 ? GLIMPSE IRAC 4.5-micron flux 56 A1 --- n_F4.5 [d] Note for non-measured flux (1) 57- 62 F6.2 mJy F5.8 ? GLIMPSE IRAC 5.8-micron flux 63 A1 --- n_F5.8 [d] Note for non-measured flux (1) 64- 70 F7.2 mJy F8.0 ? GLIMPSE IRAC 8-micron flux 71 A1 --- n_F8.0 [d] Note for non-measured flux (1) 72- 78 F7.2 mJy F24 ? MIPSGAL 24-micron flux 79 A1 --- n_F24 [d] Note for non-measured flux (1) 80- 85 F6.2 Jy F70 MIPSGAL 70-micron flux 87- 92 F6.2 Jy F100 Herschel 100-micron flux 94- 99 F6.2 Jy F160 Herschel 160-micron flux 101-106 F6.2 Jy F250 Herschel 250-micron flux 108-113 F6.2 Jy F350 Herschel 350-micron flux 115-120 F6.2 Jy F500 ? Herschel 500-micron flux
Note (1): d mean that the source is detected but not measured (sources 24 and 28).
Acknowledgements: Miguel Figueira, miguel.figueira(at)lam.fr
(End) M. Figueira [Lab. d'Astrophysique Marseille], P. Vannier [CDS] 02-Jan-2017
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

catalogue service

© UDS/CNRS

Contact