中文
相关论文

相关论文: The Proper Motion of the Large Magellanic Cloud us…

200 篇论文

The reflex motion and distortion of the Milky Way (MW) halo caused by the infall of a massive Large Magellanic Cloud (LMC) has been demonstrated to result in an excess of orbital poles of dark matter halo particles towards the LMC orbital…

星系天体物理 · 物理学 2022-06-22 Marcel S. Pawlowski , Pierre-Antoine Oria , Salvatore Taibi , Benoit Famaey , Rodrigo Ibata

High-precision astrometry throughout the Local Group is a unique capability of the Hubble Space Telescope (HST), with potential for transformative science, including constraining the nature of dark matter, probing the epoch of reionization,…

Using a Fourier-plane technique, we have merged HI ATCA and Parkes data sets providing an accurate set of images of the LMC sensitive to structure on scales of 15 pc (for an LMC distance of 55 kpc) upwards. The spatial dynamic range (2.8…

天体物理学 · 物理学 2008-11-26 S. Kim , L. Staveley-Smith , M. A. Dopita , R. J. Sault , K. C. Freeman , Y. Lee , Y. -H. Chu

We present photometric maps based on data from the shallow survey in the Large Magellanic Cloud performed as the supplementary project during the third phase of the Optical Gravitational Lensing Experiment. They cover about 40 square…

We present clumps of dust emission from Herschel observations of the Large Magellanic Cloud (LMC) and their physical and statistical properties. We catalog cloud features seen in the dust emission from Herschel observations of the LMC, the…

The Large Magellanic Cloud (LMC) has an extensive H$_{\alpha}$ emission halo that traces an extended, warm ionized component of its interstellar medium. Using the Wisconsin H$_{\alpha}$ Mapper (WHAM) telescope, we present the first…

星系天体物理 · 物理学 2023-05-18 B. M. Smart , L. M. Haffner , K. A. Barger , D. A. Ciampa , A. S. Hill , D. Krishnarao , G. J. Madsen

We attempt to determine whether the MACHO microlensing source stars are drawn from the average population of the LMC or from a population behind the LMC by examining the HST color-magnitude diagram (CMD) of microlensing source stars. We…

We observed five giant molecular clouds (GMCs) in the Large Magellanic Cloud (LMC) in the 12CO J=1-0 line using the Atacama Large Millimeter/submillimeter Array (ALMA). The sample includes four GMCs with some signs of star formation --…

星系天体物理 · 物理学 2018-12-17 Tsuyoshi Sawada , Jin Koda , Tetsuo Hasegawa

Motivated by recent studies suggesting that the Large Magellanic Cloud (LMC) could be significantly more massive than previously thought, we explore whether the approximation of an inertial Galactocentric reference frame is still valid in…

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

The Large and Small Magellanic Clouds (LMC and SMC, respectively) are the largest satellite galaxies of the Milky Way (MW) and their interactions with each other have given rise to multiple stellar substructures in their periphery as well…

星系天体物理 · 物理学 2026-02-06 Bethany Garver , David Nidever , Victor Debattista , Nathan Deg

We assemble a catalogue of candidate Sagittarius stream members with 5d and 6d phase-space information, using astrometric data from Gaia DR2, distances estimated from RR Lyrae stars, and line-of-sight velocities from various spectroscopic…

星系天体物理 · 物理学 2021-02-22 Eugene Vasiliev , Vasily Belokurov , Denis Erkal

We present a new analysis on the issue of the location of the observed microlensing events in direction of the Large Magellanic Cloud (LMC). This is carried out starting from a recently drawn coherent picture of the geometrical structure…

天体物理学 · 物理学 2014-10-13 L. Mancini , S. Calchi Novati , Ph. Jetzer , G. Scarpetta

Recent discoveries have shown that a population of hypervelocity stars (HVSs) originate from the Large Magellanic Cloud (LMC). We use three such HVSs as dynamical tracers to constrain the past orbit of the LMC. Since each star was ejected…

星系天体物理 · 物理学 2026-04-07 Scott Lucchini , Jiwon Jesse Han

We report results of proper motions of 15 known Large Magellanic Cloud (LMC) old globular clusters (GCs) derived from the Gaia DR2 data sets. When these mean proper motions are gathered with existent radial velocity measurements to compose…

星系天体物理 · 物理学 2019-01-09 Andrés E. Piatti , Emilio J. Alfaro , Tristan Cantat-Gaudin

We present proper motion measurements for more than $0.55$ million main-sequence stars, by comparing astrometric positions of matched stars between the multi-band imaging datasets from the Hyper Suprime-Cam (HSC) Survey and the SDSS Stripe…

A number of studies based on data collected by the $\textit{Hubble Space Telescope}$ ($\textit{HST}$) GO-13297 program "HST Legacy Survey of Galactic Globular Clusters: Shedding UV Light on Their Populations and Formation" have investigated…

We present previously unpublished photometry of three Large Magellanic Cloud (LMC) microlensing events and show that the new photometry confirms the microlensing interpretation of these events. These events were discovered by the MACHO…

天体物理学 · 物理学 2009-11-10 David P. Bennett , Andrew C. Becker , Austin Tomaney

We measure proper motions with the Hubble Space Telescope for 16 extreme radial velocity stars, mostly unbound B stars in the Milky Way halo. Twelve of these stars have proper motions statistically consistent with zero, and thus have radial…

太阳与恒星天体物理 · 物理学 2015-06-23 Warren R. Brown , Jay Anderson , Oleg Y. Gnedin , Howard E. Bond , Margaret J. Geller , Scott J. Kenyon

We present a new distance determination to the Large and Small Magellanic Clouds using the newly developed red clump stars method (Paczynski and Stanek 1998). This new, single-step, Hipparcos calibrated method seems to be one of the most…

天体物理学 · 物理学 2007-05-23 A. Udalski , M. Szymanski , M. Kubiak , G. Pietrzynski , P. Wozniak , K. Zebrun