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相关论文: The age-metallicity relationship in the Small Mage…

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We use data from the Magellanic Edges Survey (MagES) in combination with Gaia EDR3 to study the extreme southern outskirts of the Small Magellanic Cloud (SMC), focussing on a field at the eastern end of a long arm-like structure which wraps…

星系天体物理 · 物理学 2022-10-26 L. R. Cullinane , A. D. Mackey , G. S. Da Costa , S. E. Koposov , D. Erkal

Recently, a noticeable number of new star clusters was identified in the outskirts of the Large Magellanic Cloud (LMC) populating the so-called star cluster age gap, a space of time (~ 4-12 Gyr) where the only known star cluster is…

星系天体物理 · 物理学 2021-03-31 Andrés E. Piatti

The [C/N]-age relation has become a powerful tool for reconstructing the formation history of the Milky Way (MW), providing the largest age sample for field giant stars. However, at metallicities below [Fe/H] $< -0.5$, stellar surfaces are…

太阳与恒星天体物理 · 物理学 2026-02-17 Yuxi Lu , John D. Roberts , Joshua T. Povick , Marc H. Pinsonneault , Madeline Howell , David L. Nidever , Jennifer A. Johnson

Red clump (RC) stars are widely used as an excellent standard candle. To make them even better, it is important to know the dependence of their absolute magnitudes on age and metallicity. We observed star clusters in the Large Magellanic…

太阳与恒星天体物理 · 物理学 2019-05-08 Hiroki Onozato , Yoshifusa Ita , Yoshikazu Nakada , Shogo Nishiyama

We model the dynamical interaction between the Small and Large Magellanic Clouds and their corresponding stellar cluster populations. Our goal is to explore whether the lack of old clusters ($\gtrsim 7$ Gyr) in the Small Magellanic Cloud…

星系天体物理 · 物理学 2015-06-16 Daniel D. Carpintero , Facundo A. Gómez , Andrés E. Piatti

The chemical evolution history of the Small Magellanic Cloud (SMC) has been a matter of debate for decades. The challenges in understanding the SMC chemical evolution are related to a very slow star formation rate (SFR) combined with bursts…

We derive the spatially-resolved star formation history (SFH) for a $96$ deg$^2$ area across the main body of the Large Magellanic Cloud (LMC), using the near-infrared photometry from the VISTA survey of the Magellanic Clouds (VMC). The…

We present the first reconstruction of the star formation history (SFH) of the Large and Small Magellanic Clouds (LMC and SMC) using Long Period Variable stars. These cool evolved stars reach their peak luminosity in the near-infrared;…

星系天体物理 · 物理学 2016-10-26 Sara Rezaei kh. , Atefeh Javadi , Habib Khosroshahi , Jacco Th. van Loon

We present an analysis of age, metal abundance, and positional data on populous clusters in the Small Magellanic Cloud (SMC) with the ultimate aim of determining the line-of-sight (LOS) depth of the SMC using these clusters as proxies. Our…

We present preliminary results from a new HST archival program aimed at tightly constraining the ancient (>4 Gyr ago) star formation histories (SFHs) of the field populations of the SMC and LMC. We demonstrate the quality of the archival…

宇宙学与河外天体物理 · 物理学 2015-06-12 Daniel R. Weisz , Andrew E. Dolphin , Evan D. Skillman , Jon Holtzman , Julianne J. Dalcanton , Andrew A. Cole , Kyle Neary

We present the chemical composition of 206 red giant branch stars members of the Small Magellanic Cloud (SMC) using optical, high-resolution spectra collected with the multi-object spectrograph FLAMES-GIRAFFE at the ESO Very Large…

星系天体物理 · 物理学 2023-03-29 A. Mucciarelli , A. Minelli , M. Bellazzini , C. Lardo , D. Romano , L. Origlia , F. R. Ferraro

The Advanced Camera for Surveys on board the Hubble Space Telescope has been used to obtain deep, high-resolution images of the intermediate-age star cluster NGC 1846 in the Large Magellanic Cloud. We present new color-magnitude diagrams…

宇宙学与河外天体物理 · 物理学 2015-05-13 Paul Goudfrooij , Thomas H. Puzia , Vera Kozhurina-Platais , Rupali Chandar

We investigate, on the basis of CCD Stroemgren photometry, the ages and metallicities of six LMC clusters together with their surrounding field population. The clusters and metallicities are: NGC1651 (in the range [Fe/H]=-0.65 dex to -0.41…

天体物理学 · 物理学 2007-05-23 B. Dirsch , T. Richtler , W. P. Gieren , M. Hilker

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…

太阳与恒星天体物理 · 物理学 2015-03-13 Bruno Dias , Paula Coelho , Beatriz Barbuy , Leandro Kerber , Thais Idiart

The projected distribution of stars in the Small Magellanic Cloud (SMC) from the Magellanic Clouds Photometric Survey is analysed. Stars of different ages are selected via criteria based on V magnitude and V-I colour, and the degree of…

天体物理学 · 物理学 2011-07-21 M. Gieles , N. Bastian , B. Ercolano

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 present a new study of the spatial distribution and ages of the star clusters in the Small Magellanic Cloud (SMC). To detect and estimate the ages of the star clusters we rely on the new fully-automated method developed by Bitsakis et…

We present the first SkyMapper stellar population analysis of the Large Magellanic Cloud (hereafter LMC),including the identification of 3578 candidate Carbon Stars through their extremely red $g-r$ colours. Coupled with Gaia astrometry, we…

星系天体物理 · 物理学 2020-01-08 Zhen Wan , Magda Guglielmo , Geraint F. Lewis , Dougal Mackey , Rodrigo A. Ibata

It has been recently shown from observational data sets the variation of structural parameters and internal dynamical evolution of star clusters in the Milky Way and in the Large Magellanic Cloud (LMC), caused by the different gravitational…

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