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J/A+A/303/468    Spectrospcopy, IR-photom. in globular clusters (Minniti, 1995)

Spectroscopy and IR photometry for giant stars in obscured globular clusters: NGC 6325, NGC 6401, NGC 6517, NGC 6642, HP 1 and Pal 6. Minniti D. <Astron. Astrophys. 303, 468 (1995)> =1995A&A...303..468M (SIMBAD/NED BibCode)
ADC_Keywords: Photometry, infrared ; Radial velocities ; Spectroscopy Keywords: Stars: abundances - Stars: velocities - Galaxy: globular clusters Description (Abstract): We have obtained spectra of 85 giants selected from IR photometry in the fields of several very reddened galactic clusters. Radial velocities are measured to check membership. We measure the strength of several Fe and Mg spectral feature s, presenting a new calibration of metallicity based on the location of the giants in the Mg+Fe5270+Fe5335 vs (J-K)0 diagram. Using this calibration we compute accurate mean metallicities for the clusters studied. Reddening values which better fit the spectroscopic and photometric data are also derived. Pal 6 turns out to be the most metal rich cluster of our sample, with [Fe/H]=0.2±0.3. Objects: ---------------------------------------------------------------- RA (2000) DE Name(s) ---------------------------------------------------------------- 18 36.4 -23 55 M22 = NGC 6656 17 18.0 -23 45 NGC 6325 17 23.6 -17 49 NGC 6356 17 38.6 -23 55 NGC 6401 17 48.9 -20 22 NGC 6440 18 01.8 -08 57 NGC 6517 18 31.8 -23 28 NGC 6642 17 31 05 -29 59.1 Haute-Provence 1 = C 1727-299 17 43 42 -26 13.4 Pal 6 ---------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3 90 84 Colors, velocities and spectral indices table3.tex 140 146 LaTeX version of table3
Byte-by-byte Description of file: table3
Bytes Format Units Label Explanations
1- 5 A5 --- Cluster Cluster name 8- 10 A3 --- Star Star name 13- 16 F4.2 mag J-K ? Measured J-K colour 18- 23 F6.1 km/s RV ? Measured heliocentric radial velocity 25- 28 F4.2 --- Mg Mg spectroscopic index (1) 33- 36 F4.2 --- Hbeta Hbeta spectroscopic index (1) 38- 41 F4.2 --- Fe492 Fe492 spectroscopic index (1) 43- 46 F4.2 --- Fe498 Fe498 spectroscopic index (1) 49- 52 F4.2 --- Fe501 Fe501 spectroscopic index (1) 55- 58 F4.2 --- Fe527 Fe527 spectroscopic index (1) 61- 64 F4.2 --- Fe533 Fe533 spectroscopic index (1) 67- 70 F4.2 --- Fe540 Fe540 spectroscopic index (1) 72- 75 F4.2 --- Mg1 Mg1 spectroscopic index (1) 77- 80 F4.2 --- Mg2 Mg2 spectroscopic index (1) 82- 85 F4.2 --- Mgb Mgb spectroscopic index (1) 87- 90 F4.2 --- MgH MgH spectroscopic index (1)
Note (1): The definition of the indices are in Friel E.D., 1987, AJ 93, 1388 =1987AJ.....93.1388F
Courtesy: Dante Minniti
(End) Patricia Bauer [CDS] 02-Feb-1996
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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