CDS

2007A&A...470..977V

Query : 2007A&A...470..977V

2007A&A...470..977V - Astronomy and Astrophysics, volume 470, 977-989 (2007/8-2)

IRAS 18511+0146: a proto Herbig Ae/Be cluster?.

VIG S., TESTI L., WALMSLEY M., MOLINARI S., CAREY S. and NORIEGA-CRESPO A.

Abstract (from CDS):

The evolution of a young protocluster depends on the relative spatial distribution and dynamics of both stars and gas. We study the distribution and properties of the gas and stars surrounding the luminous (104L☉) protocluster IRAS 18511+0146. IRAS 18511+0146 and the cluster associated with it has been investigated using the sub-millimetre (JCMT-SCUBA), infrared (Spitzer-MIPSGAL, Spitzer-GLIMPSE, Palomar) and radio (VLA) continuum data. Cluster simulations have been carried out in order to understand the properties of clusters as well as to compare with the observations. The central most obscured part of the protocluster coincident with the compact sub-millimetre source found with SCUBA is responsible for at least 2/3 of the total luminosity. A number of cluster members have been identified which are bright in mid infrared and show rising (near to mid infrared) spectral energy distributions suggesting that these are very young stellar sources. In the mid infrared 8.0µm image, a number of filamentary structures and clumps are detected in the vicinity of IRAS 18511+0146. Based on the luminosity and cluster size as well as on the evolutionary stages of the cluster members, IRAS 18511+0146 is likely to be protocluster with the most massive object being a precursor to a Herbig type star.

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Journal keyword(s): stars: formation - stars: pre-main sequence - infrared: ISM - submillimeter - stars: individual: IRAS 18511+0146

Nomenclature: Table 1, Fig.2: [VTW2007] IRAS 18511 A (Nos A-C). Table 2: [VTW2007] NN (Nos 1-16), [VTW2007] GN (Nos G1-G5).

CDS comments: Paragraph 2.4 calibrator 1832-105 not identified.

Simbad objects: 23

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Number of rows : 23
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023 		#notes
1 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2766 2
2 LDN 1551 DNe 04 31 30.0 +18 12 30           ~ 798 1
3 RAFGL 5123 Y*O 04 31 34.07736 +18 08 04.9020           K3V/M3III 853 0
4 SH 2-255 N HII 06 12 53.3 +18 00 42           ~ 30 0
5 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4251 2
6 [VTW2007] 1 Y*O 18 53 36.115 +01 50 29.58           ~ 1 0
7 [VTW2007] 2 Y*O 18 53 36.797 +01 50 25.42           ~ 1 0
8 2MASS J18533742+0150049 Y*O 18 53 37.42 +01 50 04.9           ~ 1 0
9 [VTW2007] 4 Y*O 18 53 37.427 +01 50 26.17           ~ 2 0
10 [VTW2007] 5 Y*O 18 53 37.581 +01 50 24.88           ~ 2 0
11 SSTGLMC G034.8133+00.3483 Y*O 18 53 37.787 +01 49 59.19           ~ 1 0
12 RAFGL 5542 Y*O 18 53 37.88832 +01 50 30.5844           ~ 67 0
13 2MASS J18533825+0150094 Y*O 18 53 38.25 +01 50 09.5           ~ 2 0
14 2MASS J18533833+0150343 Y*O 18 53 38.3467941216 +01 50 34.286204760           ~ 2 0
15 [VTW2007] G4 Y*O 18 53 38.375 +01 50 15.13           ~ 3 0
16 [VTW2007] IRAS 18511 B smm 18 53 38.44 +01 50 15.1           ~ 1 0
17 [VTW2007] G5 Y*O 18 53 38.713 +01 50 13.36           ~ 3 0
18 [VTW2007] 12 Y*O 18 53 38.747 +01 49 57.06           ~ 1 0
19 [VTW2007] 13 Y*O 18 53 38.900 +01 50 00.47           ~ 1 0
20 [VTW2007] 14 Y*O 18 53 39.391 +01 50 22.41           ~ 1 0
21 SSTGLMC G034.8194+00.3420 Y*O 18 53 39.813 +01 50 08.74           ~ 1 0
22 SSTGLMC G034.8187+00.3417 Y*O 18 53 39.814 +01 50 05.44           ~ 1 0
23 [VTW2007] IRAS 18511 C smm 18 53 43.55 +01 49 50.4           ~ 1 0

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2023.09.30-19:37:56

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