J/A+A/600/A93 Multiwavelength 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 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
MIPSGAL 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:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 126 122 Identification, position and fluxes for compact
sources detected towards RCW 120
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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
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Identification number
5- 13 F9.5 deg RAdeg Right ascension (J2000)
15- 23 F9.5 deg DEdeg Declination (J2000)
25- 30 F6.2 mJy FJ ? 2MASS J-band flux (1)
31 A1 --- n_FJ [d] Note for non-measured flux (1)
32- 37 F6.2 mJy FH ? 2MASS H-band flux (1)
38 A1 --- n_FH [d] Note for non-measured flux (1)
39- 44 F6.2 mJy FKs ? 2MASS Ks-band flux (1)
45 A1 --- n_FKs [d] Note for non-measured flux (1)
46- 51 F6.2 mJy F3.6 ? GLIMPSE IRAC 3.6-micron flux (1)
52 A1 --- n_F3.6 [d] Note for non-measured flux (1)
53- 58 F6.2 mJy F4.5 ? GLIMPSE IRAC 4.5-micron flux (1)
59 A1 --- n_F4.5 [d] Note for non-measured flux (1)
60- 66 F7.2 mJy F5.8 ? GLIMPSE IRAC 5.8-micron flux (1)
67 A1 --- n_F5.8 [d] Note for non-measured flux (1)
68- 74 F7.2 mJy F8.0 ? GLIMPSE IRAC 8-micron flux (1)
75 A1 --- n_F8.0 [d] Note for non-measured flux (1)
76- 82 F7.2 mJy F24 ? MIPSGAL 24-micron flux (1)
83 A1 --- n_F24 [d] Note for non-measured flux (1)
84- 90 F7.2 Jy F70 ? MIPSGAL 70-micron flux
92- 98 F7.2 Jy F100 ? Herschel 100-micron flux
100-105 F6.2 Jy F160 ? Herschel 160-micron flux
107-112 F6.2 Jy F250 ? Herschel 250-micron flux
114-119 F6.2 Jy F350 ? Herschel 350-micron flux
121-126 F6.2 Jy F500 ? Herschel 500-micron flux
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Note (1): d mean that the source is detected but not measured
(sources 24 and 28).
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Acknowledgements:
Miguel Figueira, miguel.figueira(at)lam.fr
History:
* 05-Apr-2017: On-line version with the 35 first lines of tablea1
* 16-Jun-2017: Complete tablea1 (122 sources)
(End) M. Figueira [Lab. d'Astrophysique Marseille], P. Vannier [CDS] 02-Jan-2017