2007A&A...476..255A


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.29CET04:04:24

2007A&A...476..255A - Astronomy and Astrophysics, volume 476, 255-261 (2007/12-2)

GS 263-02+45: a new HI supershell with evidence of having triggered star formation?

ARNAL E.M. and CORTI M.

Abstract (from CDS):

We look for galactic neutral hydrogen (HI) supershells likely to be associated with massive star groupings. A neutral hydrogen (HI) line survey carried out at the Instituto Argentino de Radioastronomia (IAR) and the Southern Galactic Plane Survey (SGPS) were the main databases used in this investigation. A new HI supershell (GS263-02+45) was found in the outer part of the Galaxy. This structure is located at a distance of 5.3±1kpc from the Sun and has a linear diameter of about 665±40pc. The expansion velocity of the supershell is ∼14km/s. The total amount of atomic gas related to GS263-02+45 is ∼2x106M. Based on the analysis of the SGPS HI data it is concluded that the OB-association Bochum 7 is likely to be interacting with GS263-02+45. This fact together with distance and age arguments may indicate that Bochum 7 was born as a consequence of the evolution of GS263-02+45.

Abstract Copyright:

Journal keyword(s): Galaxy: kinematics and dynamics - Galaxy: structure - ISM: bubbles - ISM: structure - radio lines: ISM

CDS comments: CBN843648.6-460736 is a misprint for CBN84348.6-460736, CBN84505.0-455648 is a probable misprint for CBN844450.1-455648.

Simbad objects: 16

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Number of rows : 16

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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9241 1
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14559 1
3 GSH 263-02+45 sh 08 37 -44.           ~ 8 0
4 CD-45 4447 * 08 43 24.1560753466 -46 08 28.624567738 10.76 11.26 10.77 11.02   O7.5V 18 0
5 TYC 8151-1072-1 * 08 43 48.7942327366 -46 07 33.712529329   12.64 12.66     ~ 6 0
6 CPD-45 2920 Al* 08 43 49.8049446233 -46 07 08.756732813 10.6 11.36 10.99 10.91   O6.5V(n)((f)) 32 1
7 GSC 08151-04243 * 08 43 50.85 -45 58 19.5     12.9     B1.5V 2 0
8 CD-45 4462 ** 08 43 51.0866710803 -46 03 46.281666246 11.31 11.87 11.36 11.30   OB- 11 0
9 LS 1140 * 08 44 04.5156342687 -45 53 15.932809537 12.06 12.38 11.65 11.45   OB+ 10 0
10 CD-45 4472 * 08 44 25.0614191499 -45 53 34.554408298 11.45 11.90 11.29 11.21   OB 12 0
11 C 0843-458 OpC 08 44.8 -45 58   6.94 6.8     ~ 36 0
12 CD-45 4484 * 08 44 50.1575780205 -45 56 48.381543117 11.05 11.56 11.39     B2V 3 0
13 CPD-45 2961 * 08 44 51.0384214374 -46 10 10.756884022 11.55 12.07 11.53 11.45   OB 9 0
14 GSC 08151-01942 * 08 45 05.1206022210 -46 02 59.811275565     12.6     B2.5-3V 3 0
15 UCAC2 12177291 * 08 45 18.8876921566 -45 41 49.433006100     14.8     B5V 3 0
16 GSH 263+00+47 sh 08 46 -43.           ~ 4 0

    Equat.    Gal    SGal    Ecl

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2020.02.29-04:04:24

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