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J/A+A/584/A46       GIRAFFE Inner Bulge Survey (GIBS). II.   (Gonzalez+, 2015)

The Giraffe Inner Bulge Survey (GIBS). II. Metallicity distributions and alpha element abundances at fixed Galactic latitude. Gonzalez O.A., Zoccali M., Vasquez S., Hill V., Rejkuba M., Valenti E., Rojas-Arriagada A., Renzini A., Babusiaux C., Minniti D., Brown T. <Astron. Astrophys. 584, A46 (2015)> =2015A&A...584A..46G (SIMBAD/NED BibCode)
ADC_Keywords: Milky Way ; Abundances ; Photometry ; Effective temperatures Keywords: Galaxy: bulge - Galaxy: abundances - Galaxy: formation - Galaxy: evolution Abstract: We investigate metallicity and α-element abundance gradients along a Galactic longitude strip, at latitude b~-4°, with the aim of providing observational constraints for the structure and origin of the Milky Way bulge. High-resolution (R∼22500) spectra for 400 Kgiants, in four fields within -4.8°≲b≲-3.4° and -10°≲l≲+10°, were obtained within the GIRAFFE Inner Bulge Survey (GIBS) project. To this sample we added another ∼400 stars in Baade's Window at (l,b)=(1°,-4°), observed with the identical instrumental configuration: FLAMES GIRAFFE in Medusa mode with HR13 setup. All target stars lie within the red clump of the bulge colour-magnitude diagram, thus minimising contamination from the disc or halo stars. The spectroscopic stellar surface parameters were derived with an automatic method based on the GALA code, while the [Ca/Fe] and [Mg/Fe] abundances as a function of [Fe/H] were derived through a comparison with the synthetic spectra using MOOG. We constructed the metallicity distributions for the entire sample, and for each field individually, in order to investigate the presence of gradients or field-to-field variations in the shape of the distributions. Description: Coordinates, VIJHKs photometry, stellar surface parameters, [Fe/H], [Mg/Fe] and [Ca/Fe] abundance ratios for a sample of 400 red clump stars in the four high-resolution GIBS fields. The spectroscopic stellar surface parameters were derived with an automatic method based on the GALA code, while the [Ca/Fe] and [Mg/Fe] abundances as a function of[Fe/H] were derived through a comparison with the synthetic spectra using MOOG. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 123 400 Stellar parameters, [Fe/H], [Mg/Fe], and [Ca/Fe] abundance ratios for stars in the four high-resolution GIBS fields
See also: J/AJ/110/2788 : JHK photometry for Galactic bulge stars (Tiede+ 1995) J/MNRAS/348/1439 : OGLE II Galactic center proper motions (Sumi+, 2004) J/A+A/458/113 : BVRIc phot. towards inner Galactic Bulge (Santiago+, 2006) J/ApJ/721/L28 : OGLE-III red clump stars in Galactic Bulge (Nataf+, 2010) J/A+A/534/A91 : Galactic Bulge Valinhos Observatory Catalog (Teixeira+ 2011) J/A+A/555/A91 : Kinematics and photometry of red clump stars (Vasquez+ 2013) J/A+A/562/A66 : GIRAFFE Inner Bulge Survey (GIBS). I. (Zoccali+, 2014) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Field Field name 8- 11 I4 --- GIBS Target name (1) 13- 14 I2 h RAh Right ascension (J2000) 16- 17 I2 min RAm Right ascension (J2000) 19- 24 F6.3 s RAs Right ascension (J2000) 26 A1 --- DE- Declination sign 27- 28 I2 deg DEd Declination (J2000) 30- 31 I2 arcmin DEm Declination (J2000) 33- 37 F5.2 arcsec DEs Declination (J2000) 39- 43 F5.2 mag Imag OGLE I-band magnitude 45- 49 F5.2 mag Vmag OGLE V-band magnitude 51- 55 F5.2 mag Jmag VVV J-band magnitude 57- 61 F5.2 mag Hmag VVV J-band magnitude 63- 67 F5.2 mag Ksmag VVV Ks-band magnitude 69- 72 I4 K Teff Effective temperature 74- 76 I3 K e_Teff Error on effective Temperature 78- 80 F3.1 km/s Vt Microturbulence velocity 82- 85 F4.2 km/s e_Vt Error on microturbulence velocity 87- 90 F4.2 [cm2/s] logg Surface gravity 92- 96 F5.2 [Sun] [Fe/H] Metallicity 98-101 F4.2 [Sun] e_[Fe/H] Error on metallicity 103-107 F5.2 [Sun] [Ca/Fe] Abundance ratio, [Ca/Fe] 109-112 F4.2 [Sun] e_[Ca/Fe] Error on abundance ratio [Ca/Fe] 114-118 F5.2 [Sun] [Mg/Fe] Abundance ratio, [Mg/Fe] 120-123 F4.2 [Sun] e_[Mg/Fe] Error on abundance ratio [Mg/Fe]
Note (1): Target names correspond to those published in GIBS. I paper (Zoccali et al. 2014, Cat. J/A+A/562/A66). Will be GIBS NNNN in Simbad.
Acknowledgements: Oscar Gonzalez, ogonzale(at)eso.org References: Zoccali et al., Paper I 2014A&A...562A..66Z, Cat. J/A+A/562/A66
(End) Oscar Gonzalez [ESO], Patricia Vannier [CDS] 24-Sep-2015
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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