2007A&A...463..175V

Query : 2007A&A...463..175V

2007A&A...463..175V - Astronomy and Astrophysics, volume 463175-186 (2007/2-3)

Infrared study of the southern Galactic star-forming region associated with IRAS 14416-5937.

VIG S., GHOSH S.K., OJHA D.K. and VERMA R.P.

Abstract (from CDS):

Our goal was to carry out an infrared study of the southern Galactic massive star-forming region associated with IRAS 14416-5937. This star-forming region has been mapped simultaneously in two far infrared bands at ∼150 and 210µm, using the TIFR 1-m balloon borne telescope with ∼1' angular resolution. We have used 2MASS JHKs, as well as Spitzer-GLIMPSE data of this region to study the stellar populations of the embedded young cluster. This region comprises two sources, designated as A and B and separated by ∼2pc. The spectrum of a region located close to the source A obtained using the Long Wavelength Spectrometer (LWS) on board the Infrared Space Observatory (ISO) is presented. Emission from warm dust and from Unidentified Infrared Bands (UIBs) is estimated using the mid-infrared data of the MSX survey. The spatial distributions of (1) the temperature of cool dust and (2) optical depth at 200µm have been obtained taking advantage of the similar beams in both the TIFR bands. A number of atomic fine structure lines have been detected in the ISO-LWS spectrum, which have been used to estimate the electron density and the effective temperature of the ionising radiation in this region. From the near- and mid-infrared images, we identify a dust lane due north-west of source A. The dust lane is populated by Class I type sources. Class II type sources are found further along the dust lane as well as below it. Self consistent radiative transfer models of the two sources (A and B) are in good agreement with the observed spectral energy distributions. The spatial distribution of young stellar objects in and around the dust lane suggests that active star formation is taking place along the dust lane and is possibly triggered by the expanding HII regions of A and B.

Abstract Copyright: ∼

Journal keyword(s): infrared: ISM - ISM: H II regions - ISM: individual objects: IRAS 14416-5937 - stars: pre-main sequence

VizieR on-line data: <Available at CDS (J/A+A/463/175): irac.dat 2mass.dat>

Nomenclature: Table 1: [VGO2007] 14416-5937 A (Nos A-B).

Simbad objects: 75

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Number of rows : 75
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1071 2
2 2MASS J14444123-5945268 Y*? 14 44 41.2257284904 -59 45 26.814816864           ~ 2 0
3 SSTGLMC G316.7459+00.0267 MIR 14 44 41.311 -59 46 21.14           ~ 1 0
4 2MASS J14444183-5950466 * 14 44 41.7699162144 -59 50 46.820969232           ~ 1 0
5 2MASS J14444244-5948188 NIR 14 44 42.45 -59 48 18.9           ~ 1 0
6 2MASS J14444256-5952434 * 14 44 42.5299594176 -59 52 43.688846028           ~ 1 0
7 SSTGLMC G316.7589+00.0445 MIR 14 44 43.342 -59 45 03.23           ~ 1 0
8 2MASS J14444368-5947208 NIR 14 44 43.68 -59 47 20.8           ~ 1 0
9 2MASS J14444444-5953009 NIR 14 44 44.4559221144 -59 53 00.887263584           ~ 1 0
10 2MASS J14444488-5948006 NIR 14 44 44.88 -59 48 00.6           ~ 1 0
11 2MASS J14444533-5951567 NIR 14 44 45.33 -59 51 56.8           ~ 1 0
12 2MASS J14444590-5948273 NIR 14 44 45.90 -59 48 27.3           ~ 1 0
13 2MASS J14444604-5951584 NIR 14 44 46.05 -59 51 58.4           ~ 1 0
14 2MASS J14444677-5946212 NIR 14 44 46.78 -59 46 21.3           ~ 1 0
15 2MASS J14444694-5946520 * 14 44 46.9466856264 -59 46 52.049376768           ~ 1 0
16 2MASS J14444710-5951048 * 14 44 47.0768242968 -59 51 04.595864616           ~ 1 0
17 SSTGLMC G316.7144-00.0711 MIR 14 44 47.380 -59 52 28.12           ~ 1 0
18 2MASS J14444776-5953020 * 14 44 47.7566182440 -59 53 02.060884788           ~ 1 0
19 2MASS J14444821-5950155 * 14 44 48.2274882936 -59 50 15.631215108           ~ 1 0
20 2MASS J14444839-5948400 Y*? 14 44 48.39 -59 48 40.1           ~ 2 0
21 2MASS J14444862-5946415 * 14 44 48.6117043776 -59 46 41.440613088           ~ 1 0
22 2MASS J14444914-5947071 * 14 44 49.1332671048 -59 47 07.170296172           ~ 1 0
23 2MASS J14444995-5945117 NIR 14 44 49.96 -59 45 11.7           ~ 1 0
24 2MASS J14445021-5946397 NIR 14 44 50.22 -59 46 39.7           ~ 1 0
25 SPICY 23560 Y*? 14 44 52.640 -59 47 39.43           ~ 2 0
26 2MASS J14445285-5951361 NIR 14 44 52.8486375408 -59 51 36.206730180           ~ 1 0
27 2MASS J14445303-5951111 NIR 14 44 53.04 -59 51 11.1           ~ 1 0
28 2MASS J14445329-5946458 Y*? 14 44 53.29 -59 46 45.8           ~ 2 0
29 2MASS J14445341-5946501 Y*? 14 44 53.41 -59 46 50.2           ~ 2 0
30 2MASS J14445354-5945305 * 14 44 53.5287584112 -59 45 30.475763064           ~ 1 0
31 2MASS J14445482-5948430 NIR 14 44 54.7955353968 -59 48 43.140387132           ~ 1 0
32 2MASS J14445482-5952244 * 14 44 54.8031842904 -59 52 24.512720916           ~ 1 0
33 2MASS J14445623-5947593 Y*? 14 44 56.2328651904 -59 47 59.296863912           ~ 3 0
34 2MASS J14445756-5945306 NIR 14 44 57.57 -59 45 30.7           ~ 1 0
35 2MASS J14445797-5951352 NIR 14 44 57.97 -59 51 35.3           ~ 1 0
36 2MASS J14445828-5947413 Y*? 14 44 58.29 -59 47 41.4           ~ 2 0
37 2MASS J14445891-5949593 * 14 44 58.8528271608 -59 49 59.287505232           ~ 1 0
38 SPICY 23577 Y*? 14 44 58.939 -59 48 01.32           ~ 2 0
39 2MASS J14445959-5949534 NIR 14 44 59.59 -59 49 53.4           ~ 1 0
40 2MASS J14450134-5952384 * 14 45 01.3407861264 -59 52 38.497562976           ~ 1 0
41 2MASS J14450302-5949357 NIR 14 45 03.0191170128 -59 49 35.981698836           ~ 1 0
42 2MASS J14450389-5951202 * 14 45 03.8829839280 -59 51 20.382129828           ~ 1 0
43 SSTGLMC G316.7752-00.0264 MIR 14 45 04.677 -59 48 29.69           ~ 1 0
44 2MASS J14450513-5945475 * 14 45 05.1216113976 -59 45 47.984281848           ~ 1 0
45 2MASS J14450519-5949046 Y*? 14 45 05.20 -59 49 04.6           ~ 2 0
46 2MASS J14450543-5952088 * 14 45 05.3997604464 -59 52 09.056484948           ~ 1 0
47 2MASS J14450598-5944563 Y*? 14 45 05.98 -59 44 56.4           ~ 2 0
48 2MASS J14450697-5951195 Y*? 14 45 06.98 -59 51 19.5           ~ 2 0
49 [VGO2007] 14416-5937 B IR 14 45 07.8 -59 49 00           ~ 3 0
50 2MASS J14451038-5951271 Y*? 14 45 10.39 -59 51 27.1           ~ 2 0
51 SSTGLMC G316.7899-00.0264 MIR 14 45 11.031 -59 48 07.46           ~ 1 0
52 SSTGLMC G316.7865-00.0414 MIR 14 45 12.626 -59 49 01.41           ~ 1 0
53 2MASS J14451304-5950424 NIR 14 45 13.04 -59 50 42.4           ~ 1 0
54 2MASS J14451464-5949435 NIR 14 45 14.64 -59 49 43.5           ~ 1 0
55 2MASS J14451491-5950417 * 14 45 14.8075258992 -59 50 41.106594480           ~ 1 0
56 GAL 316.8-00.1 HII 14 45 19.4 -59 49 32           ~ 20 0
57 2MASS J14452048-5951525 NIR 14 45 20.48 -59 51 52.5           ~ 1 0
58 SSTGLMC G316.8017-00.0489 MIR 14 45 20.682 -59 49 02.66           ~ 1 0
59 2MASS J14452136-5946106 * 14 45 21.3768595512 -59 46 10.242270696           ~ 1 0
60 2MASS J14452297-5951192 * 14 45 22.9728873960 -59 51 19.331486316           ~ 1 0
61 2MASS J14452376-5950111 Y*? 14 45 23.76 -59 50 11.1           ~ 2 0
62 SPICY 23619 Y*? 14 45 24.353 -59 48 06.70           ~ 2 0
63 [VGO2007] 14416-5937 A IR 14 45 25.4 -59 49 11           ~ 2 0
64 SPICY 23624 Y*? 14 45 26.279 -59 51 05.20           ~ 2 0
65 IRAS 14416-5937 HII 14 45 28.6 -59 49 59           ~ 26 1
66 2MASS J14452969-5950179 NIR 14 45 29.70 -59 50 17.9           ~ 1 0
67 2MASS J14453074-5946116 * 14 45 30.7232694072 -59 46 11.742420828           ~ 1 0
68 TYC 8692-153-1 SB* 14 45 32.2941010920 -59 45 39.577129380   12.27 10.57     ~ 2 0
69 2MASS J14453522-5946248 NIR 14 45 35.23 -59 46 24.8           ~ 1 0
70 2MASS J14453543-5945581 NIR 14 45 35.43 -59 45 58.2           ~ 1 0
71 2MASS J14453749-5951001 Y*? 14 45 37.49 -59 51 00.1           ~ 2 0
72 2MASS J14454091-5948089 NIR 14 45 40.8509647088 -59 48 08.500447721           ~ 1 0
73 2MASS J14454329-5952322 * 14 45 43.2924428976 -59 52 32.540792880           ~ 1 0
74 2MASS J14454395-5950207 * 14 45 44.0212054872 -59 50 20.564234304           ~ 1 0
75 2MASS J14454572-5945582 * 14 45 45.7080930480 -59 45 58.687072344           ~ 1 0

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