Old Stellar Populations of the Small Magellanic Cloud

@article{Dolphin2001OldSP,
  title={Old Stellar Populations of the Small Magellanic Cloud},
  author={Andrew E. Dolphin and Alistair R. Walker and Paul William Hodge and Mario L. Mateo and E. Olszewski and Robert A. Schommer and Nicholas B. Suntzeff},
  journal={The Astrophysical Journal},
  year={2001},
  volume={562},
  pages={303-313}
}
We present WFPC2 and ground-based VI photometry of NGC 121 and a nearby field in the outer SMC. For NGC 121, we measure a true distance modulus of μ0 = 18.96 ± 0.04 (distance of 61.9 ± 1.1 kpc), age of 10.6 ± 0.5 Gyr, metallicity of [Fe/H] = -1.03 ± 0.06, and initial mass of 4.1 ± 0.4 × 105 M☉, assuming a Salpeter IMF with lower cutoff at 0.1 M☉. In the outer SMC field, we find evidence of stars covering a wide range of ages—from 2 Gyr to at least 9-12 Gyr old. We have measured the distance… 
The Star Formation History of the Small Magellanic Cloud
We present the spatially resolved star formation and chemical enrichment history of the Small Magellanic Cloud (SMC) across the entire central 4° × 45 area of the main body, based on UBVI photometry
IDENTIFICATION OF A NEW RELATIVELY OLD STAR CLUSTER IN THE SMALL MAGELLANIC CLOUD
We present results on the age and metallicity estimates of the astonishingly unstudied Small Magellanic Cloud (SMC) cluster (ESO 51-SC09), from CCD BVI photometry obtained at the ESO NTT with the
Red giants in the Small Magellanic Cloud - II. Metallicity gradient and age-metallicity relation
We present results from the largest Ca II triplet line metallicity study of Small Magellanic Cloud (SMC) field red giant stars to date, involving 3037 objects spread across approximately 37.5 deg 2 ,
CaII Triplet Spectroscopy of Small Magellanic Cloud Red Giants. II. Abundances for a Sample of Field Stars
We have obtained metallicities of ~ 360 red giant stars distributed in 15 Small Magellanic Cloud (SMC) fields from near-infrared spectra covering the CaII triplet lines using the VLT + FORS2. The
NEAR-INFRARED PHOTOMETRY OF FOUR STELLAR CLUSTERS IN THE SMALL MAGELLANIC CLOUD ∗
We present high-quality J, H, and Ks photometry of four Small Magellanic Cloud stellar clusters with intermediate ages in the 1-7 Gyr range (namely NGC 339, 361, 416, and 419). We obtained deep
AN ACCURATE AGE DETERMINATION FOR THE SMALL MAGELLANIC CLOUD STAR CLUSTER NGC 121 WITH THE HUBBLE SPACE TELESCOPE/ADVANCED CAMERA FOR SURVEYS ∗
As the first paper of a series devoted to study the old stellar population in clusters and fields in the Small Magellanic Cloud (SMC), we present deep observations of NGC 121 in the F555W and F814W
OLD GLOBULAR CLUSTERS IN MAGELLANIC-TYPE DWARF IRREGULAR GALAXIES ⋆
We have performed a search for old globular clusters (GC) using archival F606W and F814W HST/ACS images of 19 Magellanic-type dwarf Irregular (dIrr) galaxies. Those dIrrs reside in nearby (2 - 8Mpc)
The star field age–metallicity relationship of the Small Magellanic Cloud
We present the results of the age and metallicity estimates for the unprecedented data base of some 3.3 million stars distributed throughout the entire Small Magellanic Cloud main body, obtained for
AGB stars in the Magellanic Clouds II. The rate of star formation across the LMC
This article compares the distribution of Ks magnitudes of Large Magellanic Cloud (LMC) asymptotic giant branch (AGB) stars obtained from the DENIS and 2MASS data with theoretical distributions.
The Low- and Intermediate-Mass Stellar Population in the Small Magellanic Cloud: The Central Stars of Planetary Nebulae
We present a study on the central stars (CSs) of planetary nebulae (PNs) observed in the Small Magellanic Cloud (SMC) with the Space Telescope Imaging Spectrograph (STIS) instrument on board the
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 34 REFERENCES
The star formation histories of two northern LMC fields
Ground-based UBV photometry of two fields in the northern disc of the Large Magellanic Cloud (LMC) is presented. A distance modulus of (m−M)0=18.41±0.04 and an extinction of AV=0.30±0.05 have been
OLD AND INTERMEDIATE-AGE STELLAR POPULATIONS IN THE MAGELLANIC CLOUDS
▪ Abstract The Magellanic Clouds have galactocentric distances of 50 and 63 kiloparsecs, making it possible to probe the older populations of clusters and stars in some detail. Although it is clear
Observations and Implications of the Star Formation History of the Large Magellanic Cloud
We present derivations of star formation histories based on color-magnitude diagrams of three fields in the LMC from HST/WFPC2 observations. One field is located in the LMC bar and the other two are
Star Formation Histories from HST Color-Magnitude Diagrams of Six Fields of the LMC
We present results on the analysis of background field stars found in HST WFPC2 observations of six of the old globular clusters of the Large Magellanic Cloud. Treated as contaminants by the globular
Globular Cluster Ages and the Formation of the Galactic Halo
Main sequence turnoff magnitudes from the recent set of Yale isochrones (Chaboyer et al. 1995) have been combined with a variety of relations for the absolute magnitude of RR Lyr stars (Mv(RR)) to
Optical Gravitational Lensing Experiment. The Distance Scale: Galactic Bulge - LMC - SMC
We analyze the mean luminosity of three samples of field RRab Lyr stars observed in the course of the OGLE microlensing experiment: 73 stars from the Galactic bulge and 110 and 128 stars from
Ca II Triplet Spectroscopy of Giants in Small Magellanic Cloud Star Clusters: Abundances, Velocities, and the Age-Metallicity Relation
We have obtained spectra at the Ca II triplet of individual red giants in seven Small Magellanic Cloud (SMC) star clusters whose ages range from ~4 to 12 Gyr. The spectra have been used to determine
The stellar population of the Small Magellanic cloud near NGC 121. I. The mean metallicity, metallicity spread and radial velocity of SMC halo giants.
Technological advances make it now possible to conduct CCD photometry studies of stars in the halo of the Magellanic Clouds, taking into account the age and chemical composition of the oldest stars,
WFPC2 Observations of Star Clusters in the Magellanic Clouds. II. The Oldest Star Clusters in the Small Magellanic Cloud
We present our analysis of archival Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) observations in F450W (~B) and F555W (~V) of the intermediate-age populous star clusters NGC 121, NGC
HST Colour-Magnitude Diagrams of Six Old Globular Clusters in the LMC
We report on HST observations of six candidate old globular clusters in the Large Magellanic Cloud: NGC 1754, NGC 1835, NGC 1898, NGC 1916, NGC 2005 and NGC 2019. Deep exposures with the F555W and
...
1
2
3
4
...