2005A&A...433..931B


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.04CET20:45:50

2005A&A...433..931B - Astronomy and Astrophysics, volume 433, 931-940 (2005/4-3)

A low-absorption disk zone at low Galactic latitude in Centaurus.

BICA E., BONATTO C., SANTIAGO B.X. and KERBER L.O.

Abstract (from CDS):

We investigate the properties of two stellar concentrations in a low-absorption disk zone in Centaurus, located respectively at l=306.47°, b=-0.61°, and l=307.01°, b=-0.74°. The present analysis is based mostly on 2MASS photometry, as well as optical photometry. Based on colour-magnitude diagrams and stellar radial density profiles, we show that these concentrations are not open star clusters. Instead, they appear to be field stars seen through a differentially-reddened window. We estimate that the bulk of the stars in both stellar concentrations is located at ∼1.5kpc from the Sun, a distance consistent with that of the Sgr-Car arm in that direction. This low-absorption window allows one to probe into distant parts of the disk besides the Sgr-Car arm, probably the tangent part of the Sct-Cru arm, and/or the far side of the Sgr-Car arm in that direction. The main sequence associated to the Sgr-Car arm is reddened by E(B-V)∼0.5, so that this window through the disk is comparable in reddening to Baade's window to the bulge. We also investigate the nature of the open cluster candidate Ru166. The presently available data do not allow us to conclude whether Ru166 is an actual open cluster or field stars seen through a small-scale low-absorption window.

Abstract Copyright:

Journal keyword(s): Galaxy: structure - Galaxy: stellar content

Nomenclature: Text: [BBS2005] W LLL.l+B.b N=2.

Simbad objects: 20

goto Full paper

goto View the reference in ADS

Number of rows : 20

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 188 OpC 00 48 26 +85 15.3           ~ 828 0
2 NGC 2682 OpC 08 51 18 +11 48.0           ~ 2088 0
3 NAME Crux-Scutum Spiral Arm reg 12 30 -60.0           ~ 283 0
4 DCld 304.7-00.3 DNe 13 07 20 -63 06.9           ~ 3 0
5 [DB2002b] G306.21-0.30 DNe 13 20 24 -62 59.2           ~ 4 0
6 [DB2002b] G306.54-0.07 DNe 13 23.0 -62 44           ~ 3 0
7 [BBS2005] W 306.5-0.6 reg 13 23 01 -63 16.0           ~ 1 1
8 * m Cen * 13 24 00.4807468884 -64 32 08.409705367 5.85 5.35 4.52     G5IIb 42 0
9 Ced 122 ISM 13 24.7 -64 01           ~ 1 0
10 FEST 2-168 ISM 13 25.0 -63 41           ~ 2 0
11 NGC 5120 OpC 13 25 39.00 -63 28 00.0   11.68 10.8     ~ 8 1
12 [DB2002b] G306.87-0.05 DNe 13 25 52 -62 39.5           ~ 5 0
13 [BBS2005] W 307.0-0.7 reg 13 27 56 -63 19.8           ~ 1 1
14 [DB2002b] G307.15-1.01 DNe 13 29 30 -63 34.2           ~ 4 0
15 NGC 5155 OpC 13 29 35.5 -63 25 30           ~ 6 1
16 [DB2002b] G307.53-0.93 DNe 13 32.7 -63 25           ~ 3 0
17 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 440 1
18 NAME Sgr I Window reg 17 56 -29.0           ~ 64 0
19 NAME Sgr II Window reg 18 12 -27.9           ~ 18 0
20 NAME Galactic Bulge reg ~ ~           ~ 3533 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2005A&A...433..931B and select 'bookmark this link' or equivalent in the popup menu


2021.03.04-20:45:50

© Université de Strasbourg/CNRS

    • Contact