2021A&A...648A..16B

Query : 2021A&A...648A..16B

2021A&A...648A..16B - Astronomy and Astrophysics, volume 648A16-16 (2021/4-1)

Gemini/Phoenix H-band analysis of the globular cluster AL 3.

BARBUY B., ERNANDES H., SOUZA S.O., RAZERA R., MOURA T., MELENDEZ J., PEREZ-VILLEGAS A., ZOCCALI M., MINNITI D., DIAS B., ORTOLANI S. and BICA E.

Abstract (from CDS):


Context. The globular cluster AL 3 is old and located in the inner bulge. Three individual stars were observed with the Phoenix spectrograph at the Gemini South telescope. The wavelength region contains prominent lines of CN, OH, and CO, allowing the derivation of C, N, and O abundances of cool stars.
Aims. We aim to derive C, N, O abundances of three stars in the bulge globular cluster AL 3, and additionally in stars of NGC 6558 and HP 1. The spectra of AL 3 allows us to derive the cluster's radial velocity.
Methods. For AL 3, we applied a new code to analyse its colour-magnitude diagram. Synthetic spectra were computed and compared to observed spectra for the three clusters.
Results. We present a detailed identification of lines in the spectral region centred at 15555Å, covering the wavelength range 15525-15590Å. C, N, and O abundances are tentatively derived for the sample stars.

Abstract Copyright: © ESO 2021

Journal keyword(s): stars: abundances - stars: atmospheres - Galaxy: bulge - globular clusters: individual: NGC 6558 - globular clusters: individual: AL 3 - globular clusters: individual: HP 1

CDS comments: HP1-6 not identified.

Simbad objects: 22

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Number of rows : 22
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 * mu. Leo PM* 09 52 45.8170136628 +26 00 25.024269924 6.50 5.10 3.88 2.97 2.39 K2IIIbCN1Ca1 479 0
2 * alf Boo RG* 14 15 39.67207 +19 10 56.6730 2.46 1.18 -0.05 -1.03 -1.68 K1.5IIIFe-0.5 2417 1
3 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
4 ESO 455-11 GlC 17 31 05.20 -29 58 54.0           ~ 208 0
5 2MASS J17310538-2959199 LP* 17 31 05.3908882764 -29 59 20.018616899     17.070 15.213 14.281 ~ 2 0
6 Cl* Haute-Provence 1 BZO 2 Pe* 17 31 05.8607503107 -29 58 35.494404799     16.982     ~ 10 0
7 Cl* Haute-Provence 1 BZO 3 * 17 31 05.87 -29 59 18.1     17.003     ~ 5 0
8 2MASS J17310729-2959021 * 17 31 07.295 -29 59 02.16     17.131   14.394 ~ 4 0
9 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
10 GCl 80.1 GlC 18 01 38.80 -26 50 23.0           ~ 143 0
11 NGC 6522 GlC 18 03 34.08 -30 02 02.3           ~ 569 0
12 Cl* NGC 6558 BZO F97 * 18 10 15.1995981888 -31 46 01.430902308     16.037   14.467 ~ 8 0
13 NGC 6558 GlC 18 10 17.6 -31 45 50           ~ 265 0
14 Cl* NGC 6558 BZO F42 LP? 18 10 17.6656457016 -31 45 39.339024012     13.9   11.442 ~ 12 0
15 Cl* NGC 6558 BZO B64 * 18 10 18.0374021952 -31 45 43.515370008     15.623   14.180 ~ 6 0
16 Cl* NGC 6558 BZO B11 * 18 10 19.0224376800 -31 44 50.613019980     15.902   14.275 ~ 7 0
17 Cl* NGC 6558 BZO B73 * 18 10 21.5036684280 -31 45 26.770633740     15.709   14.187 ~ 11 0
18 2MASS J18140529-2838168 * 18 14 05.2984082328 -28 38 16.928141388           ~ 1 0
19 2MASS J18140592-2838049 * 18 14 05.9377024125 -28 38 04.584026027           ~ 1 0
20 ESO 456-78 GlC 18 14 06.600 -28 38 06.00           ~ 82 0
21 2MASS J18140691-2838087 * 18 14 06.9135961440 -28 38 08.865550968           ~ 1 0
22 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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