J/A+A/418/33 RI photometry of C stars in NGC 147 (Battinelli+, 2004)
Carbon star survey in the Local Group.
VIII. Probing the stellar halo of NGC 147.
Battinelli P., Demers S.
<Astron. Astrophys. 418, 33 (2004)>
=2004A&A...418...33B 2004A&A...418...33B
ADC_Keywords: Galaxies, photometry ; Photometry, CCD ; Stars, carbon
Keywords: galaxies: individual: NGC 147 - galaxies: stellar populations -
galaxies: structure
Abstract:
We have imaged a 42'x28' field centered on the spheroidal galaxy NGC
147 to study its AGB population and determine the main structural
properties of this M31 companion. This field was observed through two
broadband (R and I) and two narrowband (CN and TiO) filters, following
the standard approach of our systematic survey of C stars in nearby
galaxies. We identified 288 C stars in NGC 147. The average
I-magnitude of such sample of C stars is =20.31 with σ=0.40.
If we adopt a distance modulus µ0=24.39, derived from the
luminosity of both the tip of the red giant branch (TRGB) and the
horizontal branch (HB) by Han et al. (1997, Cat. J/AJ/113/1001, we
conclude that the average absolute I-magnitude of C stars is
<MI≥-4.39, thus slightly under luminous with respect to what was
found for other galaxies in our survey.
Description:
Observations, carried on in service mode at the Canada-France-Hawaii
Telescope on August 7th and September 4th 2002, consist in Mould R,
I and CN and TiO imaging fields centered on NGC 147.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 77 288 Positions and photometry of 288 C stars
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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/AJ/125/3037 : RI photometry of NGC 205 carbon stars (Demers+, 2003)
J/A+A/416/111 : C stars in Wolf-Lundmark-Melotte galaxy (Battinelli+, 2004)
J/A+A/417/479 : RI photometry of NGC 185 carbon stars (Battinelli+, 2004)
J/A+A/403/93 : Photometry of AGB stars in NGC 185 and NGC 147 (Nowotny+, 2003)
J/A+A/445/69 : JHK' photometry of C stars in NGC 147 (Sohn+, 2005)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq 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 in Mould filter (832.6nm)
40- 45 F6.3 mag e_Imag Error on I
48- 53 F6.3 mag R-I R-I colour index in Mould filter 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 (808.6 and 768.9nm)
72- 77 F6.3 mag e_CN-TiO Error on CN-TiO
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Acknowledgements: Paolo Battinelli
References:
Albert et al., Paper I 2000AJ....119.2780A 2000AJ....119.2780A Cat. J/AJ/119/2780
Battinelli & Demers, Paper II 2000AJ....120.1801B 2000AJ....120.1801B Cat. J/AJ/120/1801
Letarte et al., Paper III 2002AJ....123..832L 2002AJ....123..832L Cat. J/AJ/123/832
Battinelli et al., Paper V 2003AJ....125.1298B 2003AJ....125.1298B Cat. J/AJ/125/1298
Demers et al., Paper VI 2003AJ....125.3037D 2003AJ....125.3037D Cat. J/AJ/125/3037
Demers et al., Paper VII 2003A&A...410..795D 2003A&A...410..795D Cat. J/A+A/410/795
Battinelli & Demers, Paper VIII 2004A&A...418...33B 2004A&A...418...33B Cat. J/A+A/418/33
Battinelli & Demers, Paper IX 2004A&A...417..479B 2004A&A...417..479B Cat. J/A+A/417/479
(End) Patricia Bauer [CDS] 05-Apr-2004