2007A&A...466..501V

Query : 2007A&A...466..501V

2007A&A...466..501V - Astronomy and Astrophysics, volume 466, 501-507 (2007/5-1)

Carbon stars and C/M ratio in the WLM dwarf irregular galaxy.

VALCHEVA A.T., IVANOV V.D., OVCHAROV E.P. and NEDIALKOV P.L.

Abstract (from CDS):

We identify the rich carbon star population of the Magellanic-type dwarf irregular galaxy WLM (Wolf-Lundmark-Melotte) and study its photometric properties from deep near-IR observations. The galaxy also exhibits a clear presence of oxygen-rich population. We derive a carbon to M-star ratio of C/M=0.56±0.12, relatively high in comparison with many galaxies. The spatial distribution of the AGB stars in WLM hints at the presence of two stellar complexes with a size of a few hundred parsecs. Using the HI map of WLM and the derived gas-to-dust ratio for this galaxy N(HI)/E(B-V)=60±10 [1021atome/cm2/mag] we re-determined the distance modulus of WLM from the IR photometry of four known Cepheids, obtaining (m-M)0=24.84±0.14mag. In addition, we determine the scale length of 0.75±0.14kpc of WLM disk in the J-band.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual: WLM - stars: AGB and post-AGB - stars: carbon - galaxies: irregular - Local Group

VizieR on-line data: <Available at CDS (J/A+A/466/501): table1.dat>

Nomenclature: Table 1: [VIO2007] NNN (Nos 1-555).

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

CDS comments: Table 1: cross-id M05 (Mora et al. in prepa) not published in 2009, this ID is not in SIMBAD.

Simbad objects: 11

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Number of rows : 11
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 [BHE2002] WLM 1 GlC 00 01 49.48 -15 27 30.7   16.64 16.06     ~ 23 0
2 NAME Wolf-Lundmark-Melotte G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 691 2
3 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 687 1
4 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 800 1
5 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12650 1
6 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11149 1
7 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1236 2
8 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7066 0
9 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17434 0
10 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1562 0
11 NAME Local Group GrG ~ ~           ~ 8391 0

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