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

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In this paper, we analyse the metallicity structure of the Magellanic Clouds using parameters derived from the Gaia DR3 low-resolution XP spectra, astrometry and photometry. We find that the qualitative behavior of the radial metallicity…

星系天体物理 · 物理学 2023-12-12 Pol Massana , David L. Nidever , Knut Olsen

Taking advantage of the near-infrared calcium triplet lines, we determine metallicities for a sample of more than 3,500 red giant stars in the field of the Small Magellanic Cloud (SMC). We find a median metallicity of [Fe/H]=-1.05$\pm$0.01…

星系天体物理 · 物理学 2025-11-04 M. Navabi , R. Carrera , N. E. D. Noël , M. De Leo

We present results on the age and metallicity estimates of the astonishingly unstudied SMC cluster ESO 51-SC09, from CCD BVI photometry obtained at the ESO NTT with the EMMI attached. ESO 51-SC09 turns out to be a relatively small cluster…

宇宙学与河外天体物理 · 物理学 2015-06-05 Andrés E. Piatti

We present results obtained from Stromgren photometry of 13 young (~30-220 Myr) Magellanic Cloud (MC) clusters, most of them lacking in the literature from direct metallicity measurements. We derived for them [Fe/H] values from a…

星系天体物理 · 物理学 2019-01-09 A. E. Piatti , G. Pietrzyński , W. Narloch , M. Górski , D. Graczyk

The Milky Way's nuclear star cluster (NSC) is a unique laboratory to study the formation and evolution of dense stellar systems around a supermassive black hole. Previous work suggests that most stars in the NSC are old; however, the…

We present the spatially-resolved star formation and chemical enrichment history of the Small Magellanic Cloud (SMC) across the entire central $4-degree x 4.5-degree area of the main body, based on UBVI photometry from our Magellanic Clouds…

天体物理学 · 物理学 2008-12-18 J. Harris , D. Zaritsky

We measure the angular correlation function of stars in a region of the Large Magellanic Cloud (LMC) that spans 2 degrees by 1.5 degrees. We find that the correlation functions of stellar populations are represented well by exponential…

天体物理学 · 物理学 2009-10-31 Jason Harris , Dennis Zaritsky

The spatial metallicity distribution of star clusters in the Small Magellanic Cloud (SMC) has recently been found to correlate as a V-shaped function with the semi-major axis of an elliptical framework proposed to assume a projected galaxy…

星系天体物理 · 物理学 2023-09-12 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 have used high-resolution spectra obtained with the multifiber facility FLAMES at the Very Large Telescope of the European Southern Observatory to derive kinematic properties and chemical abundances of Fe, O, Mg and Si for 89 stars in…

星系天体物理 · 物理学 2012-11-26 Emilio Lapenna , Alessio Mucciarelli , Livia Origlia , Francesco R. Ferraro

We present results from an extensive spectroscopic survey of field stars in the Small Magellanic Cloud (SMC). 3037 sources, predominantly first-ascent red giants, spread across roughly 37.5 sq. deg, are analysed. The line of sight velocity…

星系天体物理 · 物理学 2017-01-04 P. D. Dobbie , A. A. Cole , A. Subramaniam , S. Keller

Despite their close proximity, the complex interplay between the two Magellanic Clouds, the Milky Way, and the resulting tidal features, is still poorly understood. Recent studies have shown that the Large Magellanic Cloud (LMC) has a very…

We present deep Washington photometry of 45 poorly populated star cluster candidates in the Large Magellanic Cloud (LMC). We have performed a systematic study to estimate the parameters of the cluster candidates by matching theoretical…

星系天体物理 · 物理学 2015-06-23 Samyaday Choudhury , Annapurni Subramaniam , Andrés E. Piatti

The supergiant ionized shell SMC-SGS 1 (DEM 167), located in the outer Wing of the Small Magellanic Cloud (SMC), resembles structures that originate from an energetic star-formation event and later stimulate star formation as they expand…

星系天体物理 · 物理学 2020-01-29 Leah M. Fulmer , John S. Gallagher , Wolf-Rainer Hamann , Lida M. Oskinova , Varsha Ramachandran

We report on the accretion properties of low-mass stars in the LH95 association within the Large Magellanic Cloud (LMC). Using non-contemporaneous wide-band and narrow-band photometry obtained with the HST, we identify 245 low-mass pre-main…

太阳与恒星天体物理 · 物理学 2019-04-24 Katia Biazzo , Giacomo Beccari , Guido De Marchi , Nino Panagia

A large number of intermediate-age (~1-2-Gyr old) globular clusters (GCs) in the Large and the Small Magellanic Cloud (MC) exhibit either bimodal or extended main-sequence (MS) turn off and dual red clump. Moreover, recent papers have shown…

太阳与恒星天体物理 · 物理学 2015-11-04 A. P. Milone

Recent discoveries have put the picture of stellar clusters being simple stellar populations into question. In particular, the color-magnitude diagrams of intermediate age (1-2 Gyr) massive clusters in the Large Magellanic Cloud (LMC) show…

星系天体物理 · 物理学 2015-06-23 Florian Niederhofer , Michael Hilker , Nate Bastian , Esteban Silva-Villa

The formation history of the Small Magellanic cloud (SMC) is unraveled based on the results of our new chemical evolution models constructed for the SMC, highlighting the observed anomaly in the age-metallicity relation for star clusters in…

星系天体物理 · 物理学 2009-07-22 Takuji Tsujimoto , Kenji Bekki

We offer a new way to look at the Large Magellanic Cloud through stellar mono-abundance and mono-age-mono-abundance maps. These maps are based on $\gtrsim 500\,000$ member stars with photo-spectroscopic [M/H] and age estimates from Gaia DR3…

星系天体物理 · 物理学 2024-03-14 Neige Frankel , Rene Andrae , Hans-Walter Rix , Joshua Povick , Vedant Chandra

We report new photometry of populous intermediate-age clusters in the SMC using the {\sl Hubble Space Telescope}. In contrast to the accepted picture, these clusters appear to have formed in two brief intervals, one $8\pm 2$ Gyr ago, and a…

天体物理学 · 物理学 2009-10-31 R. Michael Rich , Michael Shara , S. Michael Fall , David Zurek