2012A&A...538A..14P


Query : 2012A&A...538A..14P

2012A&A...538A..14P - Astronomy and Astrophysics, volume 538A, 14-14 (2012/2-1)

The molecular gas around the luminous blue variable star G24.73+0.69.

PETRIELLA A., PARON S.A. and GIACANI E.B.

Abstract (from CDS):

We study the molecular environment of the luminous blue variable star G24.73+0.69 to investigate the origin of the two infrared shells around this massive star and determine its effects on the surrounding interstellar medium. We analyze the distribution of the molecular gas using the 13CO J=1-0 emission extracted from the Galactic Ring Survey. We use near- and mid-infrared data from 2MASS and GLIMPSE to identify the young stellar objects in the field. We discover the molecular counterpart to the outer infrared shell around G24.73+0.69. The CO shell was probably blown by the stellar wind of the star mainly during its main sequence phase. We also find molecular gas that corresponds to the inner infrared shell, although its origin remains uncertain. We identify seven young stellar objects within the molecular material, whose birth might have been triggered by the stellar wind of the luminous blue variable star. We suggest that both G24.73+0.69 and the progenitor of the nearby supernova remnant G24.7+0.6 were formed from the same natal cloud and represent the most evolved members of a so far undetected cluster of massive stars.

Abstract Copyright:

Journal keyword(s): stars: individual: G24.73+0.69 - stars: winds, outflows - ISM: clouds - stars: formation

Simbad objects: 15

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Number of rows : 15
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 V* AG Car WR* 10 56 11.5781414448 -60 27 12.810673260 7.00 7.57 6.96 7.73   WN11h 613 0
2 V* V481 Sct s*b 18 33 55.2781965336 -06 58 38.631350604           LBV_B[e]: 48 0
3 2MASS J18340114-0657393 NIR 18 34 01.1372692128 -06 57 39.981488472           ~ 1 0
4 2MASS J18340898-0658452 NIR 18 34 08.981 -06 58 45.21           ~ 1 0
5 SSTGLMC G024.7956+00.6558 MIR 18 34 10.294 -06 56 03.25           ~ 1 0
6 SSTGLMC G024.7901+00.6410 MIR 18 34 12.847 -06 56 45.41           ~ 1 0
7 2MASS J18341354-0655502 Y*? 18 34 13.549 -06 55 50.24           ~ 2 0
8 SSTGLMC G024.7907+00.6379 MIR 18 34 13.586 -06 56 48.69           ~ 1 0
9 SDC G24.789+0.633 DNe 18 34 14.43 -06 57 02.0           ~ 3 0
10 2MASS J18341835-0658354 NIR 18 34 18.3642420360 -06 58 35.402996496           ~ 1 0
11 SNR G024.7+00.6 SNR 18 34 46 -07 05.8           ~ 84 0
12 HD 179821 pA* 19 13 58.6082398776 +00 07 31.935181836 10.81 9.694 8.19     G4_0-Ia 231 0
13 IRC +10420 pA* 19 26 48.0979492536 +11 21 16.758531216   13.98 11.66     F8Ia+e 464 0
14 * P Cyg s*b 20 17 47.2020844 +38 01 58.552724 4.66 5.24 4.82 4.28 4.02 B1-2Ia-0ep 1154 1
15 IRAS 20298+4011 Em* 20 31 42.2846664600 +40 21 59.074415640     15.1     B:I[e] 90 0

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2022.08.18-04:29:37

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