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J/A+A/447/473  R I CN TiO photometry of DDO190 carbon stars  (Battinelli+, 2006)

The C star population of DDO 190. Battinelli P., Demers S. <Astron. Astrophys. 447, 473 (2006)> =2006A&A...447..473B
ADC_Keywords: Galaxies, peculiar ; Photometry, CCD ; Stars, carbon Keywords: galaxies: individual: DDO 190 - galaxies: dwarf - stars: carbon - stars: AGB and post-AGB - galaxies: fundamental Abstract: We have carried out deep R, I, CN, TiO observations of the dwarf irregular galaxy DDO 190. We confirm the existence intermediate-age population around this galaxy. The identification of 47 carbon stars seen up to 5 arcmin from the centre of the galaxy implies that the population distribution of DDO 190 is similar to those found in some other Local Group dIrr galaxies. An estimate of the metallicity, [Fe/H]=-1.55±0.12, is obtained based on the observed C/M ratio. From the analysis of star counts, corrected for the radial variation of the incompleteness level, we determine a scale-length α=40±5", in agreement with the recent literature. Description: We list the coordinates, the apparent I magnitude, (R-I) and (CN-TiO) colour indices of 47 carbon stars identified in DDO 190. The observations were obtained with the DOLORES camera attached to the TNG. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 96 47 Positions and photometry of 47 C stars in DDO 190
See also: J/A+A/418/33 : RI photometry of C stars in NGC 147 (Battinelli+, 2004) J/A+A/417/479 : RI photometry of NGC 185 carbon stars (Battinelli+, 2004) J/A+A/416/111 : C stars in Wolf-Lundmark-Melotte galaxy (Battinelli+, 2004) J/A+A/424/125 : Carbon stars in IC10 (Demers+, 2004) J/A+A/410/795 : Photometry of NGC 3109 carbon stars (Demers+, 2003) J/AJ/125/1298 : C star population in outer disk of M31 (Battinelli+, 2003) J/AJ/125/3037 : RI photometry of NGC 205 carbon stars (Demers+, 2003) J/AJ/120/1801 : C stars in Pegasus, DDO 210 and Tucana (Battinelli+, 2000) J/AJ/119/2780 : C stars in IC 1613 (Albert+, 2000) J/A+AS/97/603 : C stars in SMC (Rebeirot+ 1993) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 6 I6 --- Seq Running number 8- 9 I2 h RAh Right ascension (J2000.0) 11- 12 I2 min RAm Right ascension (J2000.0) 14- 18 F5.2 s RAs Right ascension (J2000.0) 21 A1 --- DE- Declination sign (J2000.0) 22- 23 I2 deg DEd Declination (J2000.0) 25- 26 I2 arcmin DEm Declination (J2000.0) 28- 32 F5.2 arcsec DEs Declination (J2000.0) 35- 40 F6.1 pix xpos CCD x coordinate 43- 48 F6.1 pix ypos CCD y coordinate 51- 56 F6.3 mag Icmag Cousins I magnitude 59- 64 F6.3 mag e_Icmag Error on Icmag 67- 72 F6.3 mag Rc-Ic Cousins R-I colour index 75- 80 F6.3 mag e_Rc-Ic Error on Rc-Ic 83- 88 F6.3 mag CN-TiO CN-TiO colour index (808.6 and 768.9nm) 91- 96 F6.3 mag e_CN-TiO Error on CN-TiO
Acknowledgements: Serge Demers, demers(at)
(End) Serge Demers [Universite de Montreal], Patricia Vannier [CDS] 20-Oct-2005
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