J/A+A/413/343 RGB stars in NGC 2808 (Cacciari+, 2004)
Mass motions and chromospheres of RGB stars in the globular cluster NGC 2808.
Cacciari C., Bragaglia A., Rossetti E., Fusi Pecci F., Mulas G.,
Carretta E., Gratton R.G., Momany Y., Pasquini L.
<Astron. Astrophys., 413, 343-362 (2004)>
=2004A&A...413..343C 2004A&A...413..343C
ADC_Keywords: Clusters, globular ; Stars, population II ; Photometry ;
Effective temperatures ; Radial velocities
Keywords: line: profiles - globular clusters: individual: NGC 2808 -
stars: atmospheres - stars: mass loss - stars: Population II -
techniques: spectroscopic
Abstract:
We present the results of the first observations, taken with FLAMES
during Science Verification, of red giant branch (RGB) stars in the
globular cluster NGC 2808. A total of 137 stars was observed, of which
20 at high resolution (R=47000) with UVES and the others at lower
resolution (R=19000-29000) with GIRAFFE in MEDUSA mode, monitoring
∼3mag down from the RGB tip. Spectra were taken of the Hα,
Na I D and Ca II H and K lines.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 75 137 List of RGB stars observed with FLAMES during
Science Verification on Jan. 24- Feb. 02, 2003.
table2.dat 66 133 Physical and atmospheric parameters for our RGB
stars in NGC 2808
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See also:
J/A+AS/84/59 : Photometry of NGC 2808 (Ferraro+, 1990)
J/ApJ/562/368 : UV photometry in NGC 2808 (Brown+, 2001)
J/A+A/391/945 : HST photometry of 74 galactic globular clusters (Piotto+ 2002)
J/A+A/432/851 : Distance of 72 Galactic globular clusters (Recio-Blanco+ 2005)
J/A+AS/144/5 : Nearby globular clusters photometric catalog (Rosenberg+ 2000)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- Seq Sequential number (1)
7 I1 h RAh Right ascension (J2000) (1)
9- 10 I2 min RAm Right ascension (J2000) (1)
12- 18 F7.4 s RAs Right ascension (J2000) (1)
20 A1 --- DE- Declination sign (J2000) (1)
21- 22 I2 deg DEd Declination (J2000) (1)
24- 25 I2 arcmin DEm Declination (J2000) (1)
27- 32 F6.3 arcsec DEs Declination (J2000) (1)
34- 39 F6.3 mag Bmag B magnitude (1)
41- 46 F6.3 mag Vmag V magnitude (1)
48- 53 F6.3 mag Jmag ? J magnitude (2)
55- 60 F6.3 mag Hmag ? H magnitude (2)
62- 67 F6.3 mag Kmag ? K magnitude (2)
69- 78 A10 --- Notes Notes (3)
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Note (1): From Piotto et al., 2002A&A...391..945P 2002A&A...391..945P,
Stars identified as Cl* NGC 2808 PKD NNNNN in Simbad
Note (2): From 2MASS catalog, Cat. II/246
Note (3): Notes are numbered as follows:
1 = MEDUSA HR12 + HR14
2 = MEDUSA HR02
3 = UVES
F = field star
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- Seq Sequential number
7- 12 F6.3 mag VMAG Absolute V magnitude
14- 18 F5.3 mag (B-V)0 Dereddened B-V colour index
20- 23 I4 K Teff(B-V) Effective temperature derived from
B-V colour index
25- 29 F5.3 [solLum] logL(B-V) Luminosity, derived from B-V colour index
31- 34 F4.2 [cm/s2] logg(B-V) Surface gravity, derived from
B-V colour index
36- 39 I4 K Teff(V-K) ? Effective temperature derived from
V-K colour index
41- 45 F5.3 [solLum] logL(V-K) ? Luminosity, derived from V-K colour index
47- 52 F6.2 km/s HRV02 ? Measured heliocentric radial velocities for
GIRAFFE setups HR02 (1)
54- 59 F6.2 km/s HRV12 ? Measured heliocentric radial velocities for
GIRAFFE setups HR12 (1)
61- 66 F6.2 km/s HRVU ? Measured heliocentric radial velocities for
UVES (1)
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Note (1): Heliocentric radial velocities derived by averaging several
photospheric lines.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 01-Jul-2005