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相关论文: Third-Epoch Magellanic Cloud Proper Motions I: HST…

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We interpret the three periods detected in OGLE LMC Cepheids SC3-360128 and SC5-338399 as corresponding to the first three overtones of radial pulsations. This interpretation imposes stringent constraints on parameters of the stars and on…

天体物理学 · 物理学 2009-11-10 P. Moskalik , W. A. Dziembowski

We have studied the optical spectra of a sample of 31 O- and early B-type stars in the Small Magellanic Cloud, 21 of which are associated with the young massive cluster NGC 346. Stellar parameters are determined using an automated fitting…

We model the potentially observable populations of normal and millisecond radio pulsars in the Large and Small Magellanic Clouds (LMC and SMC) where the known population currently stands at 19 normal radio pulsars. Taking into account the…

星系天体物理 · 物理学 2015-05-19 J. P. Ridley , D. R. Lorimer

We studied the impact of the revisited values for the LSR circular velocity of the Milky Way (Reid et al. 2004) on the formation of the Magellanic Stream. The LSR circular velocity was varied within its observational uncertainties as a free…

宇宙学与河外天体物理 · 物理学 2015-05-20 Adam Ruzicka , Christian Theis , Jan Palous

I review our understanding of the structure and kinematics of the Large Magellanic Cloud (LMC), with a particular focus on recent results. This is an important topic, given the status of the LMC as a benchmark for studies of microlensing,…

天体物理学 · 物理学 2007-05-23 Roeland P. van der Marel

The internal kinematics of the Large Magellanic Cloud (LMC) disk have been modeled by several studies using different tracers with varying coverage, resulting in a range of parameters. Here, we modeled the LMC disk using 1705 star clusters…

星系天体物理 · 物理学 2024-04-30 S. R. Dhanush , A. Subramaniam , S. Subramanian

We traced the age of the last star formation event (LSFE) in the inner Large & Small Magellanic Cloud (L&SMC) using the photometric data from the Optical Gravitational Lensing Experiment (OGLE-III) and the Magellanic Cloud Photometric…

宇宙学与河外天体物理 · 物理学 2015-05-30 G Indu , Annapurni Subramaniam

We present an overview of, and first science results from, the Magellanic Edges Survey (MagES), an ongoing spectroscopic survey mapping the kinematics of red clump and red giant branch stars in the highly substructured periphery of the…

星系天体物理 · 物理学 2020-07-22 L. R. Cullinane , A. D. Mackey , G. S. Da Costa , S. E. Koposov , V. Belokurov , D. Erkal , A. Koch , A. Kunder , D. M. Nataf

The Large and Small Magellanic Cloud (LMC and SMC) form the closest interacting galactic system to the Milky Way, therewith providing a laboratory to test cosmological models in the local Universe. We quantify the likelihood for the…

星系天体物理 · 物理学 2024-10-02 Moritz Haslbauer , Indranil Banik , Pavel Kroupa , Hongsheng Zhao , Elena Asencio

Whether or not the rich star cluster population in the Large Magellanic Cloud (LMC) is affected by significant disruption during the first few x 10^8 yr of its evolution is an open question and the subject of significant current debate.…

星系天体物理 · 物理学 2015-06-16 Richard de Grijs , Simon P. Goodwin , Peter Anders

This paper explores the effect of the LMC on the mass estimates obtained from the timing argument. We show that accounting for the presence of the LMC systematically lowers the Local Group mass ($M_{\rm LG}$) derived from the relative…

星系天体物理 · 物理学 2015-12-02 Jorge Peñarrubia , Facundo A. Gómez , Gurtina Besla , Denis Erkal , Yin-Zhe Ma

The Large and Small Magellanic Clouds (LMC, SMC) are nearby dwarf galaxies whose proximity uniquely enables molecular cloud-scale resolution observations across the entire Magellanic system, a capability unmatched in any other external…

By exploiting two ACS/HST datasets separated by a temporal baseline of ~7 years, we have determined the relative stellar proper motions (providing membership) and the absolute proper motion of the Galactic globular cluster M71. The absolute…

太阳与恒星天体物理 · 物理学 2017-02-22 M. Cadelano , E. Dalessandro , F. R. Ferraro , P. Miocchi , B. Lanzoni , C. Pallanca , D. Massari

Context. We use Hubble Space Telescope photometry of six rich, compact star clusters in the Large Magellanic Cloud (LMC), with ages ranging from 0.01 to 1.0 Gyr, to derive the clusters' stellar mass functions (MFs) at their half-mass radii.…

太阳与恒星天体物理 · 物理学 2015-05-13 Q. Liu , R. de Grijs , L. C. Deng , Y. Hu , S. F. Beaulieu

Simulations of structure formation in the standard cold dark matter cosmological model quantify the dark matter halos of galaxies. Taking into account dynamical friction between the dark matter halos, we investigate the past orbital…

星系天体物理 · 物理学 2024-03-28 Wolfgang Oehm , Pavel Kroupa

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 establish the connection between the Magellanic Clouds (MCs) and the dwarf galaxy candidates discovered in the Dark Energy Survey (DES) by building a dynamical model of the MC satellite populations, based on an extensive suite of…

星系天体物理 · 物理学 2016-06-15 Prashin Jethwa , Denis Erkal , Vasily Belokurov

Recent observations have found that the age distribution of star clusters (SCs) in the Small Magellanic Cloud (SMC) shows a sharp peak around 2 Gyr ago. However, it is theoretically unclear what physical processes are responsible for such…

星系天体物理 · 物理学 2021-12-30 Mia L Williams , Kenji Bekki , Madeleine L McKenzie

The Magellanic Clouds (MCs) offer an outstanding variety of young stellar associations, in which large samples of low-mass stars (with masses less than 1 solar mass) currently in the act of formation can be resolved and explored…

We use data on variable stars from the Optical Gravitational Lensing Experiment (OGLE III) survey to determine the three-dimensional structure of the Small Magellanic Cloud (SMC). Deriving individual distances to RR Lyrae stars and Cepheids…

星系天体物理 · 物理学 2015-06-11 Raoul Haschke , Eva K. Grebel , Sonia Duffau