2005AJ....129..348G

Query : 2005AJ....129..348G

2005AJ....129..348G - Astron. J., 129, 348-354 (2005/January-0)

A new catalog of radio compact H II regions in the Milky Way.

GIVEON U., BECKER R.H., HELFAND D.J. and WHITE R.L.

Abstract (from CDS):

We use new VLA Galactic plane catalogs at 5 and 1.4 GHz covering the first Galactic quadrant (350°≤l≤42°,|b|≤0°.4) in conjunction with the MSX6C Galactic plane catalog to construct a large sample of ultracompact H II regions. A radio catalog of this region was first published by Becker et al., but we have added new observations and rereduced the data with significantly improved calibration and mosaicking procedures, resulting in a tripling of the number of 5 GHz sources detected. Comparison of the new 5 GHz catalog and the MSX6C Galactic plane catalog resulted in a sample of 687 matches, out of which we estimate only 15 to be chance coincidences. Most of the matches show red Midcourse Space Experiment colors and a thermal radio spectrum. The scale height of their Galactic latitude distribution is very small (FWHM of 16' or ∼40 pc). These properties suggest that the sample is dominated by young ultracompact H II regions, most of which are previously uncataloged.

Abstract Copyright: ∼

Journal keyword(s): Catalogs - Galaxy: General - ISM: H II Regions

VizieR on-line data: <Available at CDS (J/AJ/129/348): table4a.dat table4b.dat>

Nomenclature: Table 4: [GBH2005] GLLL.lllll+L.lllll N=687.

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 1

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Number of rows : 1
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 Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0

Query : 2005AJ....129..348G

Basic data :
NAME Galactic Center -- Region defined in the Sky
Other object types: otypes_help 		reg (), gam (HESS,TeV,...), HS? (2019A&A)
ICRS coord. (ep=J2000) : 		17 45 39.60213 -29 00 22.0000 (Gamma-ray) [ ] E 2018A&A...612A...1H
FK4 coord. (ep=B1950 eq=1950) : 		17 42 28.87566 -28 59 12.3570 [ ]
Gal coord. (ep=J2000) : 		359.94487501 -00.04391769 [ ]
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Hierarchy : number of linked objects
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Identifiers (8) :
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NAME Gal Centre HESS J1745-290 NAME Gal Center TeV J1745-290
GAL 000.0+00.0 NAME Galactic Centre NAME Galactic Center VER J1745-290

References (16269 between 1850 and 2026) (Total 16269)
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