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相关论文: On interpretation of recent proper motion data for…

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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

We present the first study of high-precision internal proper motions (PMs) in a large sample of globular clusters, based on Hubble Space Telescope (HST) data obtained over the past decade with the ACS/WFC, ACS/HRC, and WFC3/UVIS…

We present dynamical distance estimates for 15 Galactic globular clusters and use these to check the consistency of dynamical and photometric distance estimates. For most of the clusters, this is the first dynamical distance estimate ever…

星系天体物理 · 物理学 2015-10-28 Laura L. Watkins , Roeland P. van der Marel , Andrea Bellini , Jay Anderson

The average of 14 recent measurements of the distance to the Large Magellanic Cloud (LMC) implies a true modulus of 18.50 +- 0.02 mag, and demonstrates a trend in the past 2 years of convergence toward a standard value. The distance…

天体物理学 · 物理学 2009-11-10 David R. Alves

We review our understanding of the kinematics of the LMC and the SMC, and their orbit around the Milky Way. The line-of-sight velocity fields of both the LMC and SMC have been mapped with high accuracy using thousands of discrete traces, as…

天体物理学 · 物理学 2009-11-13 Roeland P. van der Marel , Nitya Kallivayalil , Gurtina Besla

This research paper aims to compare different methods for calculating the distance to the Large Magellanic Cloud (\textit{LMC}). The distance, $d_{LMC}$, is determined using stellar parallax, variable stars (RR Lyrae and Classical…

星系天体物理 · 物理学 2025-03-28 Juan José Sánchez Medina

Proper motions (PMs) are crucial to fully understand the internal dynamics of globular clusters (GCs). To that end, the Hubble Space Telescope (HST) Proper Motion (HSTPROMO) collaboration has constructed large, high-quality PM catalogues…

星系天体物理 · 物理学 2017-01-31 Laura L. Watkins , Roeland P. van der Marel , Andrea Bellini , A. T. Baldwin , P. Bianchini , J. Anderson

Due to their close proximity, the Large and Small Magellanic Clouds (SMC/LMC) provide natural laboratories for understanding how galaxies form and evolve. With the goal of determining the structure and dynamical state of the SMC, we present…

星系天体物理 · 物理学 2020-05-06 Michele De Leo , Ricardo Carrera , Noelia E. D. Noel , Justin I. Read , Denis Erkal , Carme Gallart

The Large Magellanic Cloud is the most massive satellite galaxy of the Milky Way, with an estimated mass exceeding a tenth of the mass of the Milky Way. Just past its closest approach of about 50 kpc, and flying by the Milky Way at an…

星系天体物理 · 物理学 2020-11-24 Michael S. Petersen , Jorge Peñarrubia

An optimal maximum-likelihood technique for computing point-source image centroids from many, slightly offset, CCD frames is presented. The method is especially useful for measuring stellar proper motions from data taken with the Wide Field…

天体物理学 · 物理学 2015-06-24 Rodrigo Ibata , Geraint Lewis

By fitting the tilt in the path of the Orphan-Chenab Stream (OCS), we conclude that the current mass of the Large Magellanic Cloud (LMC) within 30 kpc is $4.7$-$5.1 \times 10^{10}$ M$_\odot$. We note that the tidal radius of the LMC of this…

星系天体物理 · 物理学 2025-10-02 Hiroka T. Warren , Heidi Jo Newberg , Autumn G. Guffey , JiaZhao Lin , Eric J. Mendelsohn , Kevin Roux

We compare the properties of gas flows on both the near and far side of the Large Magellanic Cloud (LMC) disk using Hubble Space Telescope UV absorption-line observations toward an AGN behind (transverse) and a star within (down-the-barrel)…

星系天体物理 · 物理学 2016-01-27 Kat Barger , Nicolas Lehner , J. Chris Howk

We derived the absolute proper motion (PM) of the old, solar-metallicity Galactic open cluster M67 using observations collected with CFHT (1997) and with LBT (2007). About 50 galaxies with relatively sharp nuclei allow us to determine the…

星系天体物理 · 物理学 2010-05-07 A. Bellini , L. R. Bedin , B. Pichardo , E. Moreno , C. Allen , G. Piotto , J. Anderson

We present a Bayesian analysis of the distances to 15,040 Large Magellanic Cloud (LMC) RR Lyrae stars using $V$- and $I$-band light curves from the Optical Gravitational Lensing Experiment, in combination with new $z$-band observations from…

天体物理仪器与方法 · 物理学 2014-05-08 Christopher R. Klein , S. B. Cenko , Adam A. Miller , Dara J. Norman , Joshua S. Bloom

We present an improved determination of the Hubble constant (H0) from Hubble Space Telescope (HST) observations of 70 long-period Cepheids in the Large Magellanic Cloud. These were obtained with the same WFC3 photometric system used to…

宇宙学与河外天体物理 · 物理学 2019-05-15 Adam G. Riess , Stefano Casertano , Wenlong Yuan , Lucas M. Macri , Dan Scolnic

We constrain the possible presence of a central black hole (BH) in the center of the Large Magellanic Cloud (LMC). This requires spectroscopic measurements over an area of order a square degree, due to the poorly known position of the…

We derive the mass-radius relation and mass function of molecular clumps in the Large Magellanic Cloud (LMC) and interpret them in terms of the simple feedback model proposed by Fall, Krumholz, and Matzner (FKM). Our work utilizes the…

星系天体物理 · 物理学 2021-04-14 Angus Mok , Rupali Chandar , S. Michael Fall

The neutral atomic Hydrogen (H I) kinematics of the Large Magellanic Cloud (LMC) is revisited in light of two new proper motion estimates. We analysed the intensity weighted H I velocity maps of the ATCA/Parkes and GASS data sets. We…

星系天体物理 · 物理学 2015-01-14 G. Indu , Annapurni Subramaniam

We present a Parkes multibeam \HI survey of the Large Magellanic Cloud (LMC). This survey, which is sensitive to spatial structure in the range 200 pc to 10 kpc, complements the Australia Telescope Compact survey, which is sensitive to…

天体物理学 · 物理学 2009-01-01 L. Staveley-Smith , S. Kim , M. R. Calabretta , R. F. Haynes , M. J. Kesteven

Using N-body simulations of the Large Magellanic Cloud (LMC's) passage through the Milky Way (MW), tailored to reproduce observed kinematic properties of both galaxies, we show that the high-speed tail of the Solar Neighborhood dark matter…

星系天体物理 · 物理学 2019-11-20 Gurtina Besla , Annika Peter , Nicolas Garavito-Camargo