2014A&A...569A..20M


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.25CET09:38:42

2014A&A...569A..20M - Astronomy and Astrophysics, volume 569A, 20-20 (2014/9-1)

Massive stars in the giant molecular cloud G23.3-0.3 and W41.

MESSINEO M., MENTEN K.M., FIGER D.F., DAVIES B., SIMON C.J., IVANOV V.D., KUDRITZKI R.-P., MICHAEL R.R., MacKENTY J.W. and TROMBLEY C.

Abstract (from CDS):

Young massive stars and stellar clusters continuously form in the Galactic disk, generating new HII regions within their natal giant molecular clouds and subsequently enriching the interstellar medium via their winds and supernovae. Massive stars are among the brightest infrared stars in such regions; their identification permits the characterisation of the star formation history of the associated cloud as well as constraining the location of stellar aggregates and hence their occurrence as a function of global environment. We present a stellar spectroscopic survey in the direction of the giant molecular cloud G23.3-0.3. This complex is located at a distance of ∼4-5kpc, and consists of several HII regions and supernova remnants. We discovered 11 OfK+ stars, one candidate luminous blue variable, several OB stars, and candidate red supergiants. Stars with K-band extinction from ∼1.3-1.9mag appear to be associated with the GMC G23.3-0.3; O and B-types satisfying this criterion have spectrophotometric distances consistent with that of the giant molecular cloud. Combining near-IR spectroscopic and photometric data allowed us to characterize the multiple sites of star formation within it. The O-type stars have masses from ∼25-45M, and ages of 5-8Myr. Two new red supergiants were detected with interstellar extinction typical of the cloud; along with the two RSGs within the cluster GLIMPSE9, they trace an older burst with an age of 20-30Myr. Massive stars were also detected in the core of three supernova remnants - W41, G22.7-0.2, and G22.7583-0.4917. A large population of massive stars appears associated with the GMC G23.3-0.3, with the properties inferred for them indicative of an extended history of stars formation.

Abstract Copyright:

Journal keyword(s): supergiants - ISM: supernova remnants - open clusters and associations: general - ISM: clouds

VizieR on-line data: <Available at CDS (J/A+A/569/A20): table2.dat table3.dat table4.dat tablec1.dat>

Nomenclature: Tables 2-4, C1: [MMF2014] NNN (Nos 1-151).

Simbad objects: 51

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Number of rows : 51

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 15570 Em* 02 32 49.4205362766 +61 22 42.089023028 8.40 8.80 8.11 7.41 6.86 O4If 281 0
2 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5498 1
3 V* S Dor sg* 05 18 14.3572490675 -69 15 01.148131817 9.08 10.39 10.25 9.74 9.14 A5Iaeq 339 0
4 RMC 136 Cl* 05 38 42.396 -69 06 03.36   9.63 9.50     ~ 1699 2
5 HD 90177 s*b 10 22 53.8426931454 -59 37 28.361118869 9.16 9.66 8 8.15   LBV 301 0
6 WR 39 WR* 11 06 18.7256631005 -61 14 18.428457304   14.33 13.05 13.15   WC7 40 0
7 NGC 3603 HII 11 15 24 -61 15.0           ~ 929 2
8 NAME G305 Complex SFR 13 13 -62.7           ~ 50 0
9 V* AQ Vir Mi* 14 46 18.4213323920 -07 15 49.748871151           M8-9III 16 0
10 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11252 0
11 [BSP2001] 30 Em* 17 45 50.08 -28 49 26.1           O4-6If 17 0
12 NAME Arches Cluster Cl* 17 45 50.5 -28 49 28           ~ 621 0
13 [BSP2001] 8 Em* 17 45 50.76 -28 49 16.2           O4-6If 19 0
14 NAME Pistol HII 17 46 15.2 -28 49 49           ~ 62 0
15 SNR G012.8-00.2 SFR 18 14 14.0 -17 55 50           ~ 215 0
16 NAME XMMU J183245-0921539 XB* 18 32 45.162 -09 21 54.55           ~ 12 0
17 IRAS 18303-0910 * 18 33 08.8944583462 -09 08 32.816558155           ~ 1 0
18 SNR G022.7-00.2 gam 18 33 15 -09 13.0           ~ 64 1
19 IRAS 18307-0850 mul 18 33 31.3 -08 48 20           ~ 1 0
20 OH 22.77 -0.26 OH* 18 33 40.242 -09 09 07.32           ~ 2 0
21 PSR B1830-08 Psr 18 33 40.3000 -08 27 31.250           ~ 111 1
22 NAME Sgr 1833-0832 gam 18 33 46.0 -08 32 13           ~ 66 0
23 SSTGLMC G022.5772-00.3912 WR* 18 33 47.6338738659 -09 23 07.793948452           WC8 4 0
24 BD-09 4766 * 18 33 52.1919846193 -09 10 38.254692647   11.71 10.55     ~ 1 0
25 V* V481 Sct s*b 18 33 55.2778598542 -06 58 38.634278867           LBV_B[e]: 42 0
26 [MCM2005b] 9 OpC 18 34 08 -09 14.0           ~ 12 0
27 [MFD2010] 4 * 18 34 08.547 -09 14 11.75           OB 2 0
28 [MFD2010] 3 s*b 18 34 08.680 -09 14 11.07           OBI 2 0
29 [MFD2010] 1 s*r 18 34 09.2743927981 -09 14 00.675821809       15.85 12.21 M1-0I 4 0
30 [MFD2010] 5 s*r 18 34 09.8684468953 -09 14 23.339801103           M1-2I 4 0
31 [MFD2010] 8 s*r 18 34 10.3592570758 -09 13 52.918985328           M2.5I 4 0
32 [MFD2010] 6 * 18 34 10.3609993330 -09 13 48.996162474           M5III 4 0
33 MAGPIS SNR? G23.5667-0.0333 SR? 18 34 17.09 -08 20 21.0           ~ 4 0
34 2XMM J183417.2-084901 X 18 34 17.2 -08 49 01           ~ 2 0
35 [BDS2003] 118 Cl* 18 34 20 -08 21.4           ~ 4 0
36 MAGPIS SNR? G22.9917-0.3583 SR? 18 34 26.59 -09 00 09.0           ~ 5 0
37 [JD2012] G022.755-00.480 HII 18 34 27 -09 16.1           ~ 18 0
38 [BDS2003] 117 Cl* 18 34 27 -09 15.7           ~ 7 0
39 XMMU J183435.3-084443 X 18 34 35.32 -08 44 43.8           ~ 9 0
40 IRAS 18318-0837 * 18 34 39.1688257841 -08 34 47.648219359       15.04 10.13 ~ 2 0
41 MSX5C G023.0126-00.4177 IR 18 34 42.2 -09 00 41           ~ 43 0
42 [MCM2005b] 10 OpC 18 34 47 -08 47.3           ~ 4 0
43 SNR G023.3-00.3 SNR 18 34 51.80 -08 44 38.2           ~ 185 0
44 BD-08 4635 * 18 34 51.8860639169 -08 36 40.802390194   12.71 10.18     M2 2 0
45 SWIFT J1834.9-0846 N*? 18 34 52.768 -08 45 40.83           ~ 60 0
46 BD-08 4639 * 18 35 31.0759200084 -08 41 23.679312252   10.79 8.62     K2 1 0
47 BD-08 4645 * 18 36 21.6591995981 -08 52 39.714110725 15.58 12.89 10.38 7.68 5.58 M2 11 0
48 RSGC 1 OpC 18 37 58 -06 53.0           ~ 84 0
49 MSX6C G026.4700+00.0207 s*b 18 39 32.2479397055 -05 44 20.194778342           LBV_B 34 1
50 W 51 SNR 19 23 50 +14 06.0           ~ 1130 1
51 V* NR Vul s*r 19 50 11.9279772343 +24 55 24.177460007   12.41 9.36 6.60 4.49 M1Ia: 70 0

    Equat.    Gal    SGal    Ecl

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2020.02.25-09:38:42

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