2004A&A...426..523P

Query : 2004A&A...426..523P

2004A&A...426..523P - Astronomy and Astrophysics, volume 426523-534 (2004/11-1)

The hot core-ultracompact HII connection in G10.47+0.03.

PASCUCCI I., APAI D., HENNING T., STECKLUM B. and BRANDL B.

Abstract (from CDS):

We present infrared imaging and spectroscopic data of the complex massive star-forming region G10.47+0.03. The detection of seven mid-infrared (MIR) sources in our field combined with a sensitive Ks/ISAAC image allows to establish a very accurate astrometry, at the level of 0.3". Two MIR sources are found to be coincident with two ultracompact H II regions (UCH IIs) within our astrometric accuracy. Another MIR source lies very close to three other UCH II regions and to the hot molecular core (HMC) in G10.47+0.03. Spectroscopy of two of the most interesting MIR sources allows to identify the location and spectral type of the ionizing sources. We discuss in detail the relationship between the HMC, the UCH II regions and the nearby MIR source. The nature of the other MIR sources is also investigated.

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Journal keyword(s): ISM: H II regions - infrared: stars - stars: individual: G10.47+0.03 - stars: formation

Nomenclature: Table 2: [PAH2004] R (Nos I-VII).

Simbad objects: 20

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Number of rows : 20
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 [PAH2004] V IR 08 08 37.59 -19 51 36.6           ~ 1 0
2 * alf Hya * 09 27 35.24270 -08 39 30.9583 5.14 3.42 1.97 0.93 0.16 K3IIIa 455 1
3 * tet Cen PM* 14 06 40.94752 -36 22 11.8371 3.94 3.04 2.05 1.29 0.76 K0-IIIb 262 1
4 * nu. Lib * 15 06 37.5965113128 -16 15 24.546990276 8.70 6.78 5.20     K5-III 100 0
5 2MASS J18083654-1952151 NIR 18 08 36.549 -19 52 15.15           ~ 1 0
6 2MASS J18083767-1951447 NIR 18 08 37.68 -19 51 44.8           ~ 1 0
7 [PAH2004] I IR 18 08 37.78 -19 51 55.7           ~ 1 0
8 [PAH2004] II IR 18 08 38.19 -19 51 50.0           ~ 1 0
9 [GRM93] G10.46+0.03 A HII 18 08 38.19 -19 51 49.4           ~ 10 0
10 [WC89] 010.47+0.03B2 HII 18 08 38.22 -19 51 50.5           ~ 8 0
11 MMB G010.472+00.027 cor 18 08 38.2290 -19 51 50.262           ~ 83 1
12 [WC89] 010.47+0.03B1 HII 18 08 38.25 -19 51 50.1           ~ 9 0
13 [WC89] 010.47+0.03C HII 18 08 38.30 -19 51 45.4           ~ 6 0
14 [PAH2004] III IR 18 08 38.34 -19 51 45.6           ~ 1 0
15 GAL 010.47+00.03 HII 18 08 38.4 -19 51 52           ~ 159 0
16 [PAH2004] VI IR 18 08 38.61 -19 52 07.3           ~ 1 0
17 * lam Sgr PM* 18 27 58.2407185 -25 25 18.114589 4.75 3.85 2.81 2.06 1.50 K1IIIb 290 0
18 CORNISH G029.9559-00.0168 Y*O 18 46 04.18 -02 39 21.3           ~ 385 0
19 IRAS 18449-0115 cor 18 47 34.27 -01 12 43.2           ~ 430 1
20 RAFGL 2271 SFR 18 53 18.54 +01 14 57.9           ~ 537 0

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