中文
相关论文

相关论文: Magellanic Cloud Periphery Carbon Stars IV: The SM…

200 篇论文

We provide atmospheric parameters and rotational velocities of a large sample (~400) of O- and early B-type stars, analysed in a homogeneous and consistent manner, for use in constraining theoretical models. Comparison of the rotational…

天体物理学 · 物理学 2009-11-13 I. Hunter , D. J. Lennon , P. L. Dufton , C. Trundle , S. Simon-Diaz , S. J. Smartt , R. S. I. Ryans , C. J. Evans

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

We have derived high spatial resolution metallicity maps covering $\sim$42 deg$^2$ across the Small Magellanic Cloud (SMC) in an attempt to understand its metallicity distribution and gradients up to a radius of $\sim$ 4$^{\circ}$. Using…

Dwarf galaxies enable us to study the early phases of galaxy evolution and are key to many open questions about the hierarchical structure of the Universe. The Large and Small Magellanic Cloud (LMC and SMC) are the most luminous dwarf…

星系天体物理 · 物理学 2019-11-06 Thomas Schmidt , Maria-Rosa Cioni , Florian Niederhofer , Jonathan Diaz , Gal Matijevic

The hierarchical nature of LCDM suggests that the Magellanic Clouds must have been surrounded by a number of satellites before their infall into the Milky Way. Many of those satellites should still be in close proximity to the Clouds, but…

星系天体物理 · 物理学 2016-12-21 Laura V. Sales , Julio F. Navarro , Nitya Kallivayalil , Carlos S. Frenk

We explore the stellar structure of the Large Magellanic Cloud (LMC) disk using data from the Survey of the MAgellanic Stellar History (SMASH) and the Dark Energy Survey. We detect a ring-like stellar overdensity in the red clump star count…

We present an analysis comparing the properties of 45 giant molecular clouds (GMCs) in M33 and the atomic hydrogen (HI) with which they are associated. High-resolution VLA observations are used to measure the properties of HI in the…

宇宙学与河外天体物理 · 物理学 2015-05-27 N. Imara , F. Bigiel , L. Blitz

Magnetic fields significantly influence the structure of galaxies' interstellar media, but our understanding of magnetic field strengths and structures in external galaxies is severely limited. The Large Magellanic Cloud (LMC) offers a…

星系天体物理 · 物理学 2025-05-30 Hilay Shah , Mark Krumholz , Naomi McClure-Griffiths

We use high resolution N-Body/SPH simulations to study the hydrodynamical and gravitational interaction between the Large Magellanic Cloud and the Milky Way. We model the dark and hot extended halo components as well as the stellar/gaseous…

天体物理学 · 物理学 2008-11-26 Chiara Mastropietro , Ben Moore , Lucio Mayer , James Wadsley , Joachim Stadel

The infall of the Large Magellanic Cloud (LMC) into the Milky Way (MW) has displaced the MW's centre of mass, manifesting as an observed reflex motion in the velocities of outer halo stars. We use a Simulation Based Inference framework to…

The spatial distribution of sources populating different regions of the colour-magnitude diagram (I-J, I) extracted from the DENIS catalogue towards the Magellanic Clouds (DCMC -- Cioni et al. 2000) reveal significantly different…

天体物理学 · 物理学 2007-05-23 Maria-Rosa L. Cioni , Harm J. Habing , Frank P. Israel

The rotation of the disk of the Large Magellanic Cloud (LMC) is derived from the radial velocities of 422 carbon stars. New aspects of this analysis include the propagation of uncertainties in the LMC proper motion with a Monte Carlo, and a…

天体物理学 · 物理学 2014-10-13 David R. Alves , Cailin A. Nelson

Using Blue Horizontal Branch stars identified in the Dark Energy Survey Year 1 data, we report the detection of an extended and lumpy stellar debris distribution around the Magellanic Clouds. At the heliocentric distance of the Clouds,…

星系天体物理 · 物理学 2015-12-23 Vasily Belokurov , Sergey Koposov

A combination of analytic models and n-body simulations implies that the structural evolution of the Large Magellanic Cloud (LMC) is dominated by its dynamical interaction with the Milky Way. Although expected at some level, the scope of…

天体物理学 · 物理学 2009-10-31 Martin D. Weinberg

In HST Cycles 11 and 13 we obtained two epochs of ACS/HRC data for fields in the Magellanic Clouds centered on background quasars. We used these data to determine the proper motions of the LMC and SMC to better than 5% and 15% respectively.…

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

The origin of the gas in between the Magellanic Clouds (MCs), known as the Magellanic Bridge (MB), has always been the subject of controversy. To shed light into this, we present the results from the MAGIC II project aimed at probing the…

星系天体物理 · 物理学 2015-07-23 Noelia E. D. Noel , Blair C. Conn , Justin I. Read , Ricardo Carrera , Andrew Dolphin , Hans-Walter Rix

Bound orbits have traditionally been assigned to the Large and Small Magellanic Clouds (LMC and SMC, respectively) in order to provide a formation scenario for the Magellanic Stream (MS) and its Leading Arm (LA), two prominent neutral…

星系天体物理 · 物理学 2015-05-27 Jonathan Diaz , Kenji Bekki

We use GAIA DR2 proper motions of the RIOTS4 field OB stars in the Small Magellanic Cloud (SMC) to study the kinematics of runaway stars. The data reveal that the SMC Wing has a systemic peculiar motion relative to the SMC Bar of (v_RA,…

星系天体物理 · 物理学 2018-10-26 M. S. Oey , J. Dorigo Jones , N. Castro , P. Zivick , G. Besla , H. C. Januszewski , M. Moe , N. Kallivayalil , D. J. Lennon

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 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