English
Related papers

Related papers: Old Main-Sequence Turnoff Photometry in the SMC

200 papers

Robust reddening maps of the Large and Small Magellanic Clouds (LMC/SMC) are crucial for a wide range of astrophysical studies, including the calibration of the cosmic distance ladder, investigations of stellar populations in…

I present the latest results from our group about the multiple stellar populations in the old Milky Way globular clusters (GCs) and in the young systems both in the Magellanic Clouds and in the Milky Way. For the ancient GCs in our Galaxy I…

Solar and Stellar Astrophysics · Physics 2020-03-18 Anna F. Marino

We use the SMASH survey to obtain unprecedented deep photometry reaching down to the oldest main sequence turn-offs in the colour-magnitude diagrams (CMDs) of the Small Magellanic Cloud (SMC) and quantitatively derive its star formation…

Context: Analysis of ages and metallicities of star clusters in the Magellanic Clouds provide information for studies on the chemical evolution of the Clouds and other dwarf irregular galaxies. Aims: The aim is to derive ages and…

Solar and Stellar Astrophysics · Physics 2015-03-13 Bruno Dias , Paula Coelho , Beatriz Barbuy , Leandro Kerber , Thais Idiart

Recent high-quality photometry of many star clusters in the Magellanic Clouds with ages of 1$\,-\,$2 Gyr revealed main sequence turnoffs (MSTOs) that are significantly wider than can be accounted for by a simple stellar population (SSP).…

Solar and Stellar Astrophysics · Physics 2015-06-24 Paul Goudfrooij , Leo Girardi , Philip Rosenfield , Alessandro Bressan , Paola Marigo , Matteo Correnti , Thomas H. Puzia

We report new photometry for the cluster NGC 2121 in the Large Magellanic Cloud, which shows a prominent hydrogen core exhaustion gap at the turnoff, and a descending subgiant branch remniscent of Galactic open clusters. We achieve an…

Astrophysics · Physics 2009-11-06 R. Michael Rich , Michael M. Shara , David Zurek

We present the age distributions for star clusters and individual stars in the Small Magellanic Cloud (SMC) based on data from the Magellanic Clouds Photometric Survey by Zaritsky and collaborators. The age distribution of the SMC clusters…

Astrophysics · Physics 2011-02-11 Rupali Chandar , S. Michael Fall , Bradley C. Whitmore

Recent observational studies of intermediate-age star clusters (SCs) in the Large Magellanic Cloud (LMC) have reported that a significant number of these objects show double main-sequence turn-offs (DMSTOs) in their color-magnitude diagrams…

Astrophysics · Physics 2009-11-13 K. Bekki , A. D. Mackey

We present flux-calibrated integrated spectra in the optical range (3700-6800 \AA) obtained at Complejo Astron\'omico El Leoncito (CASLEO, Argentina) for a sample of 10 concentrated star clusters belonging to the Large Magellanic Cloud…

Solar and Stellar Astrophysics · Physics 2016-06-29 Andrea V. Ahumada , Luis R. Vega , Juan J. Clariá , Mónica A. Oddone , Tali Palma

To study the evolution of binary star clusters we have imaged 7 systems in the Small Magellanic Cloud with SOAR 4-m telescope using B and V filters. The sample contains pairs with well-separated components (d < 30 pc) as well as systems…

Solar and Stellar Astrophysics · Physics 2015-05-14 J. F. C. Santos , A. A. Schmidt , E. Bica

Stellar ages are critical for understanding the temporal evolution of a galaxy. We calculate the ages of over 6000 red giant branch stars in the Large Magellanic Cloud (LMC) observed with SDSS-IV / APOGEE-S. Ages are derived using…

We have conducted a programme to determine the fundamental parameters of a substantial number of eclipsing binaries of spectral types O and B in the Small Magellanic Cloud. New spectroscopic data, obtained with the two-degree-field…

Astrophysics · Physics 2011-09-29 R. W. Hilditch , I. D. Howarth , T. J. Harries

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 339, NGC 361, NGC 416, and Kron 3 in the…

Astrophysics · Physics 2009-10-30 Kenneth J. Mighell , Ata Sarajedini , Rica S. French

We present Washington C, T1 CCD photometry of 21 fields located in the northern part of the Large Magellanic Cloud (LMC), and spread over a region of more than 2.52 degrees approximately 6 degrees from the bar. The surveyed areas were…

Astrophysics · Physics 2009-10-31 A. E. Piatti , D. Geisler , E. Bica , J. J. Claria , J. F. C. Santos , A. Sarajedini , H. Dottori

We analyze ages and metallicities for some 5.5 million stars distributed throughout the Large Magellanic Cloud (LMC) main body, obtained from CCD Washington CT1 photometry. We produce a comprehensive field star Age-Metallicity Relationship…

Astrophysics of Galaxies · Physics 2015-06-11 Andrés E. Piatti , Doug Geisler

The characteristics of the cluster systems of the Magellanic Clouds, as inferred from integrated properties, are compared with those from individual cluster studies and from the field population. The agreement is generally satisfactory…

Astrophysics · Physics 2007-05-23 G. S. Da Costa

We present CMDs in the V and I bands for fifteen star clusters in the Small Magellanic Cloud (SMC) based on data taken with the Very Large Telescope (VLT, Chile). We selected these clusters from our previous work, wherein we derived cluster…

Solar and Stellar Astrophysics · Physics 2014-03-05 M. C. Parisi , D. Geisler , G. Carraro , J. J. Clariá , E. Costa , A. J. Grocholski , A. Sarajedini , R. Leiton , A. E. Piatti

We present high-resolution maps of the dust reddening in the Magellanic Clouds (MCs). The maps cover the Large and Small Magellanic Cloud (LMC and SMC) area and have a spatial angular resolution between $\sim$ 26 arcsec and 55 arcmin. Based…

Astrophysics of Galaxies · Physics 2022-01-19 B. -Q. Chen , H. -L. Guo , J. Gao , M. Yang , Y. -L. Liu , B. -W. Jiang

Observational studies have identified several sub-structures in different regions of the Magellanic Clouds, the nearest pair of interacting dwarf satellites of the Milky Way. By studying the metallicity of the sources in these…

Astrophysics of Galaxies · Physics 2026-01-14 Abinaya O. Omkumar , Smitha Subramanian , Maria-Rosa L. Cioni , Jos de Bruijne

We present new analysis of 11 intermediate-age (1-2 Gyr) star clusters in the Large Magellanic Cloud based on Hubble Space Telescope imaging data. Seven of the clusters feature main sequence turnoff (MSTO) regions that are wider than can be…

Solar and Stellar Astrophysics · Physics 2015-05-28 Paul Goudfrooij , Thomas H. Puzia , Rupali Chandar , Vera Kozhurina-Platais