==========================================================================
J/AJ/132/1630 Magellanic Cloud populous clusters (Grocholski+, 2006)
The following files can be converted to FITS (extension .fit .fgz or .fiZ)
table1.dat table3.dat
==========================================================================
Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/AJ/132/1630
==========================================================================
drwxr-xr-x 67 cats archive 4096 Mar 5 2019 [Up]
drwxr-xr-x 2 cats archive 4096 Jan 13 2023 [TAR file]
-rw-r--r-- 1 cats archive 482 Dec 19 2022 .message
-r--r--r-- 1 cats archive 6725 Oct 3 2011 ReadMe
-rw-r--r-- 1 cats archive 319 Oct 3 2011 +footg5.gif
-rw-r--r-- 1 cats archive 2496 Oct 3 2011 +footg8.gif
-r--r--r-- 1 cats archive 2635 Jul 15 2008 table1.dat [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 14756 Jul 15 2008 table3.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe :J/AJ/132/1630 CaII spectroscopy in Magellanic Cloud clusters (Grocholski+, 2006)
================================================================================
Ca II triplet spectroscopy of Large Magellanic Cloud red giants.
I. Abundances and velocities for a sample of populous clusters.
Grocholski A.J., Cole A.A., Sarajedini A., Geisler D., Smith V.V.
<Astron. J., 132, 1630-1644 (2006)>
=2006AJ....132.1630G
================================================================================
ADC_Keywords: Magellanic Clouds ; Associations, stellar ; Clusters, open ;
Radial velocities ; Abundances, [Fe/H]
Keywords: galaxies: star clusters - Magellanic Clouds - stars: abundances
Abstract:
Using the FORS2 instrument on the Very Large Telescope, we have
obtained near-infrared spectra for more than 200 stars in 28 populous
LMC clusters. This cluster sample spans a large range of ages
( 113Gyr) and metallicities (-0.3> [Fe/H]> -2.0) and has good areal
coverage of the LMC disk. The strong absorption lines of the Ca II
triplet are used to derive cluster radial velocities and abundances.
We determine mean cluster velocities to typically 1.6km/s and mean
metallicities to 0.04dex (random error). For eight of these clusters,
we report the first spectroscopically determined metallicities based
on individual cluster stars, and six of these eight have no published
radial velocity measurements. Combining our data with archival Hubble
Space Telescope WFPC2 photometry, we find that the newly measured
cluster, NGC 1718, is one of the most metal-poor ([Fe/H] -0.80)
intermediate-age ( 2Gyr) inner disk clusters in the LMC. Similar to
what was found by previous authors, this cluster sample has radial
velocities consistent with that of a single rotating disk system,
with no indication that the newly reported clusters exhibit halo
kinematics. In addition, our findings confirm previous results that
show that the LMC lacks the metallicity gradient typically seen in
non-barred spiral galaxies, suggesting that the bar is driving the
mixing of stellar populations in the LMC.
Description:
The spectroscopic observations were carried out with FORS2 in visitor
mode at the Antu (VLT-UT1) 8.2m telescope at ESO's Paranal Observatory
during the first half of the nights of 2004 December 21-24.