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J/A+A/417/479       RI photometry of NGC 185 carbon stars    (Battinelli+, 2004)

Carbon star survey of Local Group galaxies. IX. The spheroidal galaxy NGC 185. Battinelli P., Demers S. <Astron. Astrophys. 417, 479 (2004)> =2004A&A...417..479B
ADC_Keywords: Stars, carbon ; Photometry, RI ; Photometry, CCD Keywords: galaxies: individual: NGC 185 - galaxies: stellar content - galaxies: structure Abstract: We used the CFH12K wide field camera to survey the carbon star population of NGC 185 using the CN-TiO technique. 145 C stars are identified with a mean <I≥19.99±0.05, corresponding to <MI≥-4.41±0.05, a mean luminosity similar to what was recently found for the C star population of NGC 147. The stellar surface density profile of NGC 185 follows a power law with an exponential scale length of 2.53±0.07'. The surface density of C stars follows also a power law but with a smaller scale length, 1.56±0.06, demonstrating that the intermediate-age population of NGC 185 is more concentrated than its old population. A tidal radius, rt=22.5±2.2' is determined from red giant star counts. The C/M ratio of NGC 185 is 0.17±0.02 with no apparent sign of a radial gradient. We compare the carbon star populations of NGC 185 and NGC 147 to conclude that it is unlikely that they form a close pair. Description: The observations were made in Service Queue observing mode in August 2002 with the CFH12K camera installed at the prime focus of the 3.66m Canada-France-Hawaii Telescope. The detector is a 12000x8000 pixel mosaic covering a field of 42x28'; the pixel size is 0.206arcsec. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 77 145 Positions and photometry of 145 C stars
See also: J/AJ/119/2780 : C stars in IC 1613 (Albert+, 2000) J/AJ/120/1801 : C stars in Pegasus, DDO 210 and Tucana (Battinelli+, 2000) J/AJ/123/832 : C star population in NGC 6822 (Letarte+, 2002) J/AJ/125/1298 : C star population in outer disk of M31 (Battinelli+, 2003) J/A+A/410/795 : Photometry of NGC 3109 carbon stars (Demers+, 2003) J/A+A/416/111 : C stars in Wolf-Lundmark-Melotte galaxy (Battinelli+, 2004) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq [1/145] Running number 5- 6 I2 h RAh Right ascension (J2000.0) 8- 9 I2 min RAm Right ascension (J2000.0) 11- 15 F5.2 s RAs Right ascension (J2000.0) 18 A1 --- DE- Declination sign (J2000.0) 19- 20 I2 deg DEd Declination (J2000.0) 22- 23 I2 arcmin DEm Declination (J2000.0) 25- 29 F5.2 arcsec DEs Declination (J2000.0) 32- 37 F6.3 mag Imag I magnitude (Mould filter 832.6nm) 40- 45 F6.3 mag e_Imag Error on Imag 48- 53 F6.3 mag R-I R-I colour index (Mould filters 649.3 832.6nm) 56- 61 F6.3 mag e_R-I Error on R-I 64- 69 F6.3 mag CN-TiO CN-TiO colour index (1) 72- 77 F6.3 mag e_CN-TiO Error on CN-TiO
Note (1): filters CN and TiO centered at 808.6 and 768.9 nm, respectively (bandwidth 18nm).
Acknowledgements: Paolo Battinelli References: Albert et al., Paper I 2000AJ....119.2780A Cat. J/AJ/119/2780 Battinelli & Demers, Paper II 2000AJ....120.1801B Cat. J/AJ/120/1801 Demers & Battinelli, Paper III 2002AJ....123..238D Battinelli et al., Paper V 2003AJ....125.1298B Cat. J/AJ/125/1298 Demers et al., Paper VI 2003AJ....125.3037D Cat. J/AJ/125/3037 Demers et al., Paper VII 2003A&A...410..795D Cat. J/A+A/410/795 Battinelli & Demers Paper X 2004A&A...416..111B Cat. J/A+A/416/111
(End) Patricia Bauer [CDS] 23-Mar-2004
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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