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An increasing number of young massive clusters (YMCs) in the Magellanic Clouds have been found to exhibit bimodal or extended main sequences (MSs) in their color--magnitude diagrams (CMDs). These features are usually interpreted in terms of…

太阳与恒星天体物理 · 物理学 2017-08-09 Chengyuan Li , Richard de Grijs , Licai Deng , Antonino P. Milone

Using a combination of high-resolution Hubble Space Telescope/WFPC2 observations, we explore the physical properties of the stellar populations in two intermediate-age star clusters in the Large Magellanic Cloud, NGC 1831 and NGC 1868,…

太阳与恒星天体物理 · 物理学 2015-06-18 Chengyuan Li , Richard de Grijs , Licai Deng

The spatial distribution of sources populating different regions of the colour-magnitude diagram (I-J, I) extracted from the DENIS catalogue towards the Magellanic Clouds (DCMC -- Cioni et al. 2000) reveal significantly different…

天体物理学 · 物理学 2007-05-23 Maria-Rosa L. Cioni , Harm J. Habing , Frank P. Israel

We confirm the existence of a second Large Magellanic Cloud (LMC) star cluster, KMHK 1592, with an age that falls in the middle of the so-called LMC star cluster age gap, a long period of time (~ 4 - 11 Gyr) where no star cluster had been…

星系天体物理 · 物理学 2022-02-09 Andrés E. Piatti

We present a spectroscopic study of the most massive stars in the young (4 Myr old) stellar cluster LH 95 in the Large Magellanic Cloud. This analysis allows us to complete the census of the stellar population of the system, previously…

星系天体物理 · 物理学 2015-06-04 N. Da Rio , D. Gouliermis , B. Rochau , A. Pasquali , J. Setiawan , G. De Marchi

In the process of searching the Hubble Space Telescope archive, we have serendipitously discovered three populous Large Magellanic Cloud (LMC) clusters with ages that place them in the LMC `age gap.'. These clusters - NGC 2155, SL663, and…

天体物理学 · 物理学 2007-05-23 Ata Sarajedini

Young and intermediate-age star clusters of both Magellanic Clouds exhibit complex color-magnitude diagrams. In addition to the extended main-sequence turn-offs (eMSTOs), commonly observed in star clusters younger than ~2 Gyr, the clusters…

We present a multi-wavelength study of three star forming regions, spanning the age range 1-14 Myr, located between the 30 Doradus complex and supernova SN1987A in the Large Magellanic Cloud (LMC). We reliably identify about 1000 pre-main…

太阳与恒星天体物理 · 物理学 2015-06-03 L. Spezzi , G. De Marchi , N. Panagia , A. Sicilia-Aguilar , B. Ercolano

The Magellanic Clouds are nearby dwarf irregular galaxies whose morphologies show different properties when traced by different stellar populations, making them an important laboratory for studying galaxy morphologies. We study the…

The Large Magellanic Cloud is one of the nearest galaxies to us and is one of only few galaxies where the star formation history can be determined from studying resolved stellar populations. We have compiled a new catalogue of ages,…

星系天体物理 · 物理学 2015-06-05 Holger Baumgardt , Genevieve Parmentier , Peter Anders , Eva K. Grebel

New star cluster candidates projected toward the Large and Small Magellanic Clouds (L/SMC) have been recently discovered from relatively deep imaging surveys. We here conduct a sound analysis of 24 star cluster candidates located in the…

星系天体物理 · 物理学 2021-03-10 Andrés E. Piatti

Aim: We aim to estimate the age and reddening parameters of already identified star clusters within the Small Magellanic Cloud (SMC) in a consistent way using available photometric data, classify them based on their mass and strength, and…

星系天体物理 · 物理学 2018-09-12 P. K. Nayak , A. Subramaniam , S. Choudhury , Ram Sagar

We perform a statistical clustering analysis of upper main-sequence stars in the Large Magellanic Cloud (LMC) using data from the Visible and Infrared Survey Telescope for Astronomy survey of the Magellanic Clouds. We map over 2500 young…

The number of star clusters that populate the Large Magellanic Cloud (LMC) at deprojected distances < 4 deg has been recently found to be nearly double the known size of the system. Because of the unprecedented consequences of this outcome…

星系天体物理 · 物理学 2018-02-14 Andrés E. Piatti

Aims. Filamentary structures of early type stars are found to be a common feature of the Magellanic Clouds formed at an age of about 0.9-2*10^8 yr. As we go to younger ages these large structures appear fragmented and sooner or later form…

天体物理学 · 物理学 2009-11-11 E. Livanou , M. Kontizas , I. Gonidakis , E. Kontizas , F. Maragoudaki , S. Oliver , A. Efstathiou , U. Klein

The average age difference between pairs of star clusters in the Large Magellanic Clouds increases with their separation as the ~0.35 power. This suggests that star formation is hierarchical in space and time. Small regions form stars…

天体物理学 · 物理学 2009-10-30 Y. N. Efremov , B. G. Elmegreen

In this paper we discuss the cluster and field star formation in the central part of the Small Magellanic Cloud. The main goal is to study the correlation between young objects and their interstellar environment. The ages of about 164…

天体物理学 · 物理学 2009-11-11 E. Chiosi , A. Vallenari , E. V. Held , L. Rizzi , A. Moretti

We investigate the degree of spatial correlation among extended structures in the LMC and SMC. To this purpose we work with sub-samples characterised by different properties such as age and size, taken from the updated catalogue of Bica et…

星系天体物理 · 物理学 2015-05-14 Charles Bonatto , Eduardo Bica

We analysed Washington $CMT_1$ photometry of star clusters located along the minor axis of the LMC, from the LMC optical centre up to $\sim$ 39 degrees outwards to the North-West. The data base was exploited in order to search for new star…

星系天体物理 · 物理学 2017-10-18 Andrés E. Piatti , Andrew A. Cole , Bryn Emptage

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…