2006ApJ...647L.139N

Query : 2006ApJ...647L.139N

2006ApJ...647L.139N - Astrophys. J., 647, L139-L142 (2006/August-3)

SiO masers in a Scutum massive star cluster of red supergiants.

NAKASHIMA J.-I. and DEGUCHI S.

Abstract (from CDS):

We have detected five objects toward a Scutum massive star cluster of red supergiants in the SiO J=1-0, v=1 or v=2 transitions. The radial velocity data indicate that four of the detections are cluster members and that the other, which is located close to the X-ray source AX 1838-0655, is a foreground object. The high velocity resolution of the maser lines provides a more accurate determination of the radial velocity (120 km/s) and velocity dispersion (∼2 km/s) of the cluster and, hence, of the distance (6.5 kpc) and luminosities of the stars. We discuss the implications of these measurements in constraining the relationships between SiO masers and mass-loss rate and modeling the cluster age and mass.

Abstract Copyright: ∼

Journal keyword(s): Masers - open clusters and associations: individual ([BDS2003] 122) - Stars: Supergiants

Nomenclature: Fig.1, Table 1: [ND2006] X18 N=1.

Simbad objects: 27

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Number of rows : 27
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 37 OpC 05 52 18.6 +32 32 36           ~ 436 0
3 NAME Crux-Scutum Spiral Arm reg 12 30 -60.0           ~ 323 0
4 NAME Nor Arm PoG 16 00 -50.0           ~ 485 0
5 IC 4651 OpC 17 24 48.5 -49 55 23           ~ 374 0
6 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
7 [FMR2006] 14 s*r 18 37 47.6516050536 -06 53 02.484497868           M1I 8 0
8 2MASS J18374877-0653076 * 18 37 48.7777966440 -06 53 07.966930236           ~ 2 0
9 [FMR2006] 4 s*r 18 37 50.8956703416 -06 53 38.381089812           M0I 9 0
10 [FMR2006] 11 s*r 18 37 51.7354317144 -06 51 49.825482336           M1I 8 0
11 [FMR2006] 7 s*r 18 37 54.3202436136 -06 52 34.744136628           M2I 9 0
12 [FMR2006] 2 s*r 18 37 55.2960337224 -06 52 48.412297740           M4I 10 0
13 [FMR2006] 5 s*r 18 37 55.5201546672 -06 52 12.290247912           M6I 8 0
14 [FMR2006] 1 s*r 18 37 56.3094100824 -06 52 32.171348136           M3I 11 0
15 [FMR2006] 6 s*r 18 37 57.4603117224 -06 53 25.376836524           M5I 7 0
16 [FMR2006] 9 s*r 18 37 57.7748254416 -06 52 22.256256072           M3I 8 0
17 [FMR2006] 15 s?y 18 37 57.7910117088 -06 52 32.026913796           G6I 8 0
18 RSGC 1 OpC 18 37 58 -06 53.0           ~ 117 0
19 OH 025.284-00.156 s*r 18 37 58.9032419208 -06 52 32.084468688           M3I 13 0
20 [FMR2006] 10 s*r 18 37 59.5411015776 -06 53 31.982418168           M5I 8 0
21 [FMR2006] 3 s*r 18 37 59.7451510752 -06 53 49.420654620           M4I 11 0
22 2MASS J18380129-0652519 * 18 38 01.295 -06 52 51.95           ~ 3 0
23 2MASS J18380162-0655235 * 18 38 01.63 -06 55 23.6           ~ 4 0
24 AX J1838.0-0655 SNR 18 38 03.13 -06 55 33.4           ~ 83 2
25 [FMR2006] 12 s*r 18 38 03.3119460312 -06 52 45.110885700           M0I 8 0
26 NML Cyg s*r 20 46 25.5392819088 +40 06 59.464289232           M7/8 527 0
27 NAME Scutum Region reg ~ ~           ~ 33 0

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