2010ApJ...713..429J

Query : 2010ApJ...713..429J

2010ApJ...713..429J - Astrophys. J., 713, 429-439 (2010/April-2)

Multiple shells around G79.29+0.46 revealed from Near-IR to millimeter data.

JIMENEZ-ESTEBAN F.M., RIZZO J.R. and PALAU A.

Abstract (from CDS):

Aiming to perform a study of the warm dust and gas in the luminous blue variable star G79.29+0.46 and its associated nebula, we present infrared Spitzer imaging and spectroscopy, and new CO J = 2 -> 1 and 4 -> 3 maps obtained with the IRAM 30 m radio telescope and the Submillimeter Telescope, respectively. We have analyzed the nebula detecting multiple shells of dust and gas connected to the star. Using Infrared Spectrograph-Spitzer spectra, we have compared the properties of the central object, the nebula, and their surroundings. These spectra show a rich variety of solid-state features (amorphous silicates, polycyclic aromatic hydrocarbons, and CO2ices) and narrow emission lines, superimposed on a thermal continuum. We have also analyzed the physical conditions of the nebula, which point to the existence of a photo-dissociation region.

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Journal keyword(s): circumstellar matter - dust, extinction - ISM: individual objects: G79.29+0.46 - ISM: lines and bands - stars: evolution - stars: mass-loss

Simbad objects: 18

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Number of rows : 18
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 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
2 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
3 NGC 2060 SNR 05 37 51.4466169456 -69 10 23.947092084   9.69 9.59     ~ 380 2
4 NAME Mon R2 HII 06 07 47.58 -06 22 42.6           ~ 789 2
5 NGC 2359 HII 07 18 30.000 -13 13 36.00           ~ 170 0
6 HD 90177 s*b 10 22 53.8430096928 -59 37 28.363616256 9.16 9.66 8 8.15   LBV 342 0
7 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1071 2
8 NAME Homunculus Nebula ISM 10 45 03.5 -59 41 04           ~ 379 1
9 * eta Car s*b 10 45 03.545808 -59 41 03.95124 6.37 7.03 6.48 6.123 4.41 LBV 2543 0
10 V* AG Car WR* 10 56 11.5781414448 -60 27 12.810673260 7.00 7.57 6.96 7.73   WN11h 649 0
11 HD 316235 EB* 17 45 36.1836969120 -29 32 30.545618820   11.16 11.02     A2 4 0
12 HD 316285 s*b 17 48 14.0372119152 -28 00 53.121269592 11.88 11.27 9.60 9.28   B0Ieq 197 2
13 V* EX Sgr Mi* 19 35 23.1715792728 -14 04 06.295809504     12     ~ 15 0
14 NAME Northern Coalsack DNe 20 21 +37.0           ~ 124 0
15 IRAS 20298+4011 LP? 20 31 42.2846664600 +40 21 59.074415640       15.384   B:I[e] 98 0
16 18P 59 HII 20 32 31.2 +40 16 35           ~ 75 0
17 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 1023 0
18 NAME Local Arm reg ~ ~           ~ 649 0

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