2011A&A...525A.124M


Query : 2011A&A...525A.124M

2011A&A...525A.124M - Astronomy and Astrophysics, volume 525A, 124-124 (2011/1-1)

High resolution HDS/SUBARU chemical abundances of the young stellar cluster Palomar 1.

MONACO L., SAVIANE I., CORRENTI M., BONIFACIO P. and GEISLER D.

Abstract (from CDS):

Palomar1 is a peculiar globular cluster (GC). It is the youngest Galactic GC and it has been tentatively associated to several of the substructures recently discovered in the Milky Way (MW), including the Canis Major (CMa) overdensity and the Galactic Anticenter Stellar Structure (GASS). In order to provide further insights into its origin, we present the first high resolution chemical abundance analysis for one red giant in Pal1. We obtained high resolution (R=30000) spectra for one red giant star in Pal1 using the high dispersion spectrograph (HDS) mounted at the SUBARU telescope. We used ATLAS-9 model atmospheres coupled with the SYNTHE and WIDTH calculation codes to derive chemical abundances from the measured line equivalent widths of 18 among α, Iron-peak, light and heavy elements. The Palomar 1 chemical pattern is broadly compatible to that of the MW open clusters population and similar to disk stars. It is, instead, remarkably different from that of the Sagittarius (Sgr) dwarf spheroidal galaxy. If Pal1 association with either CMa or GASS will be confirmed, this will imply that these systems had a chemical evolution similar to that of the Galactic disk.

Abstract Copyright:

Journal keyword(s): stars: abundances - Galaxy: abundances - globular clusters: individual: Palomar1

VizieR on-line data: <Available at CDS (J/A+A/525/A124): tablea1.dat>

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3654 0
2 Cl Pal 1 GlC 03 33 20.04 +79 34 51.8   17.2       ~ 210 1
3 2MASS J03332183+7935382 RG* 03 33 21.8263847522 +79 35 38.253265783     16.675   15.459 ~ 7 0
4 NAME Gal Anticenter reg 05 46 +28.9           ~ 776 0
5 Cl Berkeley 22 OpC 05 58.4 +07 50           ~ 64 0
6 Cl Berkeley 29 OpC 06 53 04.2 +16 55 39   14.3       ~ 147 0
7 C 0701-207 OpC 07 03 05.0 -20 49 00           ~ 110 0
8 NGC 2477 OpC 07 52 10 -38 31.8   6.64 5.8     ~ 262 0
9 NAME SDG G 18 55 03.1 -30 28 42   4.5 3.6     ~ 1863 2
10 Cl Terzan 7 GlC 19 17 43.92 -34 39 27.8           ~ 379 0
11 M 71 GlC 19 53 46.49 +18 46 45.1   7.91 6.1     ~ 1051 0
12 Cl Pal 12 GlC 21 46 38.84 -21 15 09.4     11.89     ~ 468 0

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2021.08.05-17:49:14

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