2004A&A...419..191C


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.09CEST07:11:10

2004A&A...419..191C - Astronomy and Astrophysics, volume 419, 191-201 (2004/5-3)

The connection between W31, SGR 1806-20, and LBV 1806-20: Distance, extinction, and structure.

CORBEL S. and EIKENBERRY S.S.

Abstract (from CDS):

We present new millimeter and infrared spectroscopic observations towards the radio nebula G10.0-0.3, which is powered by the wind of the Luminous Blue Variable star LBV 1806-20 also closely associated with the soft gamma-ray repeater SGR 1806-20, and believed to be located in the giant Galactic HII complex W31. Based on observations of CO emission lines and NH3 absorption features from molecular clouds along the line of sight to G10.0-0.3, as well as the radial velocity and optical extinction of the star powering the nebula, we determine its distance to be 15.1+1.8–1.3kpc in agreement with Corbel et al. (1997ApJ...478..624C). In addition, this strengthens the association of SGR 1806-20 with a massive molecular cloud at the same distance. All soft gamma-ray repeaters with precise location are now found to be associated with a site of massive star formation or molecular cloud. We also show that W31 consists of at least two distinct components along the line of sight. We suggest that G10.2-0.3 and G10.6-0.4 are located on the -30km/s spiral arm at a distance from the Sun of 4.5±0.6kpc and that G10.3-0.1 may be associated with a massive molecular cloud at the same distance as the LBV star, i.e. 15.1+1.8–1.3kpc, implying that W31 could be decomposed into two components along the line of sight.

Abstract Copyright:

Journal keyword(s): stars: neutron - stars: individual: SGR 1806-20 - stars: individual: LBV 1806-20 - ISM: individual: W31 - Galaxy: structure - Galaxy: kinematics and dynamics

Nomenclature: Table 1: [CWD97] MC+VVA N=3+2 added.

Simbad objects: 23

goto Full paper

goto View the reference in ADS

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 - 2020
#notes
1 SNR J052559-660453 SNR 05 26 00.4 -66 05 02     12.71     ~ 407 2
2 PSR B0525-66 Psr 05 26 00.7 -66 04 35           ~ 513 1
3 GRB 980618A gB 16 35 52 -47 35.2           ~ 237 0
4 AX J1808.6-2024 ISM 18 08 39 -20 24.6           ~ 130 3
5 [CWD97] MC+38 MoC 18 08 39.32 -20 24 39.5           ~ 5 0
6 [CWD97] MC+73 MoC 18 08 39.32 -20 24 39.5           ~ 5 0
7 [CWD97] MC+87 MoC 18 08 39.32 -20 24 39.5           ~ 3 0
8 [CWD97] MC+30 MoC 18 08 39.32 -20 24 39.5           ~ 4 0
9 [CWD97] MC+13A MoC 18 08 39.32 -20 24 39.5           ~ 3 0
10 [CWD97] MC+13B MoC 18 08 39.32 -20 24 39.5           ~ 1 0
11 [CWD97] MC+94 MoC 18 08 39.32 -20 24 39.5           ~ 2 0
12 [CWD97] MC+44 MoC 18 08 39.32 -20 24 39.5           ~ 5 0
13 [CWD97] MC-16 MoC 18 08 39.32 -20 24 39.5           ~ 4 0
14 [CWD97] MC+4 MoC 18 08 39.32 -20 24 39.5           ~ 4 0
15 [CWD97] MC+24 MoC 18 08 39.32 -20 24 39.5           ~ 4 0
16 PSR J1808-2024 Psr 18 08 39.32 -20 24 40.1           ~ 1102 2
17 [KMN95] Star A s*b 18 08 40.312 -20 24 41.14           LBV 40 3
18 GAL 010.30-00.15 HII 18 08 58.315 -20 05 15.27           ~ 79 0
19 GAL 010.15-00.34 HII 18 09 21.5680 -20 19 27.720           ~ 73 0
20 GAL 010.2-00.3 HII 18 09 24.6 -20 19 29           ~ 78 1
21 W 31 SFR 18 10 28.6 -19 55 51           ~ 241 0
22 W 31c HII 18 10 29.1 -19 56 05           ~ 301 0
23 GBS 1900+14 gB 19 07 13 +09 19.6           ~ 779 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2004A&A...419..191C and select 'bookmark this link' or equivalent in the popup menu


2020.08.09-07:11:10

© Université de Strasbourg/CNRS

    • Contact