J/MNRAS/418/1994 GM 2-4 H2 emission-line objects (Khanzadyan+, 2011)
GM 2-4: a signpost for low- and intermediate-mass star formation.
Khanzadyan T., Movsessian T.A., Davis C.J., Magakian T.Yu., Gredel R.,
Nikogossian E.H.
<Mon. Not. R. Astron. Soc., 418, 1994-2003 (2011)>
=2011MNRAS.418.1994K 2011MNRAS.418.1994K
ADC_Keywords: Molecular clouds ; Infrared sources
Keywords: circumstellar matter - ISM: individual objects: GM 2-4 -
ISM: jets and outflows - infrared: stars
Abstract:
We present a multi-wavelength study of the region towards the GM 2-4
nebula and the nearby source IRAS 05373+2340. Our near-infrared H2
1-0 S(1) line observations reveal various shock-excited features which
are part of several bipolar outflows. We identify candidates for the
driving sources of the outflows from a comparison of the
multi-waveband archival data sets and spectral energy distribution
(SED) modelling. The SED spectral slope (αIRAC) for all the
protostars in the field was then compared with the visual extinction
map. This comparison suggests that star formation progresses from
north-east to south-west across this region.
Description:
Observations in the near-infrared were carried out during the night of
2004 October 11 using the Omega 2000 prime focus camera at the Calar
Alto 3.5-m telescope.
We acquired IRAC and MIPS data from the Spitzer Science Archive
covering the area around GM 2-4.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 51 27 List of MHOs (Molecular Hydrogen emission line
Objects) detected in H2 1-0 S(1) (2.122µm)
tablea1.dat 111 28 Photometric value data base for all IRS objects
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See also:
V/114 : MSX6C Infrared Point Source Catalog (Egan+ 2003)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
II/297 : AKARI/IRC mid-IR all-sky Survey (ISAS/JAXA, 2010)
J/ApJS/184/18 : Spitzer survey of young stellar clusters (Gutermuth+, 2009)
J/MNRAS/404/661 : Young stellar outflows near-IR imaging (Varricatt+ 2010)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- MHO Name (<[KMD2011] MHO NNNA> in Simbad)
6- 7 I2 h RAh Right ascension (J2000)
9- 10 I2 min RAm Right ascension (J2000)
12- 16 F5.2 s RAs Right ascension (J2000)
18 A1 --- DE- Declination sign (J2000)
19- 20 I2 deg DEd Declination (J2000)
22- 23 I2 arcmin DEm Declination (J2000)
25- 28 F4.1 arcsec DEs Declination (J2000)
30- 33 F4.1 aW/m2 Flux Flux in H2 1-0 S(1) line at 2.122µm (1)
35- 51 A17 --- Notes Notes (2)
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Note (1): Flux in 10-18W/m2 = 10-15erg/cm//s.
The background 1σ noise estimate is 1.15x10-19W/m2
calculated in the 6-arcsec circular aperture.
Note (2): Cross-identifications with HH objects from Nikogossian et al.
(2009Ap.....52..501N 2009Ap.....52..501N, HH NNNA) and the knots identified by Varricatt
et al. (2010, Cat. J/MNRAS/404/661, <[VDR2010] 8-N> in Simbad) are
marked by [VDR]8- nomenclature.
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Filt Filter
15 A1 --- l_IRS3 Limit flag on IRS3
16- 23 F8.3 mJy IRS3 ? IRS3 magnitude in Filter (1)
25- 30 F6.3 mJy e_IRS3 ? rms uncertainty on IRS3
32- 33 I2 arcsec apIRS3 ? Aperture for IRS3 in Filter
35 A1 --- l_IRS4 Limit flag on IRS4
36- 45 F10.3 mJy IRS4 ? IRS4 magnitude in Filter (1)
46- 54 F9.3 mJy e_IRS4 ? rms uncertainty on IRS4
57- 58 I2 arcsec apIRS4 ? Aperture for IRS4 in Filter
60 A1 --- l_IRS5 Limit flag on IRS5
61- 68 F8.3 mJy IRS5 ? IRS5 magnitude in Filter (1)
70- 74 F5.3 mJy e_IRS5 ? rms uncertainty on IRS5
76 I1 arcsec apIRS5 ? Aperture for IRS5 in Filter
78- 83 F6.3 mJy IRS6 ? IRS6 magnitude in Filter (1)
85- 89 F5.3 mJy e_IRS6 ? rms uncertainty on IRS6
91 I1 arcsec apIRS6 ? Aperture for IRS6 in Filter
93- 99 F7.3 mJy IRS7 ? IRS7 magnitude in Filter (1)
101-105 F5.3 mJy e_IRS7 ? rms uncertainty on IRS7
107 I1 arcsec apIRS7 ? Aperture for IRS7 in Filter
109-111 A3 --- Refs Data origin (2)
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Note (1): Photometric value database for all IRS object converted into mJy
with the appropriate errors and used apertures to model SEDs.
Note (2): References as follows:
1 = 2MASS by Skrutskie et al. (2006, Cat. VII/233)
2 = Gutermuth et al. (2009, Cat. J/ApJS/184/18)
3 = this publication
4 = MSX6 PSC by Egan et al. (2003, Cat. V/114)
5 = AKARI/IRC (2010, Cat. II/297)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 15-Sep-2012