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相关论文: A Tidally-Stripped Stellar Component of the Magell…

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We present a comprehensive study of the excitation of CI fine-structure levels along 57 sight lines in the Large and Small Magellanic Clouds. The sight lines were selected by the detection of H$_2$ in FUSE spectra. Using archival HST/COS…

星系天体物理 · 物理学 2023-09-06 D. N. Kosenko , S. A. Balashev , V. V. Klimenko

We show that the luminosity dependence of the red clump stars on age and metallicity can cause a difference of up to < ~0.6 mag in the mean absolute I magnitude of the red clump between different stellar populations. We show that this…

天体物理学 · 物理学 2009-10-30 Andrew A. Cole

Understanding the kinematic behaviour of the Small Magellanic Cloud (SMC) remains a challenge addressed by many authors using diverse approaches. Over time, increasing observational evidence has accumulated for tidal perturbations induced…

星系天体物理 · 物理学 2026-04-10 Denis M. F. Illesca , Andrés E. Piatti , Matías Chiarpotti , Roberto Butrón

Recent observations have constrained the orbit and structure of the Large Magellanic Cloud (LMC), implying a well-constrained pericentric passage about the Milky Way (MW) ~ 50 Myr ago. In this scenario, the LMC's gaseous disk has recently…

星系天体物理 · 物理学 2015-12-16 Munier Salem , Gurtina Besla , Greg Bryan , Mary Putman , Roeland P. van der Marel , Stephanie Tonnesen

We present a study of the shape of the Large Magellanic Cloud disk. We use the brightnesses of core helium-burning red clump stars identified in V-I,I color-magnitude diagrams of 50 randomly selected LMC fields, observed with the CTIO 0.9-m…

天体物理学 · 物理学 2007-05-23 K. A. G. Olsen , C. Salyk

In this paper JK_s data from the VISTA Magellanic Cloud (VMC) survey are used to investigate the tip of the red giant branch (TRGB) as a distance indicator. A linear fit to recent theoretical models is used which reads M_{K_s} = -4.196…

太阳与恒星天体物理 · 物理学 2019-01-30 M. A. T. Groenewegen , M. -R. L. Cioni , L. Girardi , R. de Grijs , V. D. Ivanov , M. Marconi , T. Muraveva , V. Ripepi , J. Th. van Loon

The kinematics of 150 carbon stars observed at moderate dispersion on the periphery of the Small Magellanic Cloud are compared with the motions of neutral hydrogen and early type stars in the Inter-Cloud region. The distribution of radial…

天体物理学 · 物理学 2009-10-31 William Kunkel , Serge Demers , M. J. Irwin

The proximity of the Large and Small Magellanic Clouds (LMC and SMC) provides the opportunity to study the impact of dwarf-dwarf interactions on their mass assembly with a unique level of detail. To this end, we analyze two-filter broadband…

We exploit the first data release from the Gaia mission to identify candidate Mira variables in the outskirts of the Magellanic Clouds. The repeated observations of sources during the initial phase of the Gaia mission is used to identify…

星系天体物理 · 物理学 2017-03-22 Alis J. Deason , Vasily Belokurov , Denis Erkal , Sergey E. Koposov , Dougal Mackey

We present the results of a pilot wide-field radial velocity and metal abundance survey of red giants in ten fields in the Small Magellanic Cloud (SMC). The targets lie at projected distances of 0.9 and 1.9 kpc from the SMC centre…

星系天体物理 · 物理学 2015-05-18 R. De Propris , R. M. Rich , R. C. Mallery , C. D. Howard

We examine the properties of the Magellanic Bridge connecting the Large and Small Magellanic Clouds using ab-type RR Lyrae variables from the extensive dataset of the Optical Gravitational Lensing Experiment (OGLE), Phase IV data release.…

星系天体物理 · 物理学 2017-04-19 R. Wagner-Kaiser , Ata Sarajedini

Power spectra of Large Magellanic Cloud (LMC) emission at 24, 70 and 160 microns observed with the Spitzer Space Telescope have a two-component power-law structure with a shallow slope of -1.6 at low wavenumber, k, and a steep slope of -2.9…

宇宙学与河外天体物理 · 物理学 2015-05-19 D. L. Block , I. Puerari , B. G. Elmegreen , F. Bournaud

We examine the morphology of the color-magnitude diagram (CMD) for core helium-burning (red clump) stars to test the recent suggestion by Zaritsky & Lin (1997) that an extension of the red clump in the Large Magellanic Cloud (LMC) toward…

天体物理学 · 物理学 2009-10-30 J. P. Beaulieu , Penny D. Sackett

The HST proper motion (PM) measurements of the Clouds have severe implications for their interaction history with the Milky Way (MW) and with each other. The Clouds are likely on their first passage about the MW and the SMC's orbit about…

Robust reddening maps of the Large and Small Magellanic Clouds (LMC/SMC) are crucial for a wide range of astrophysical studies, including the calibration of the cosmic distance ladder, investigations of stellar populations in…

We present reddening maps of the Large Magellanic Cloud (LMC) and Small Magellanic Cloud (SMC), based on color measurements of the red clump. Reddening values of our maps were obtained by calculating the difference of the observed and…

As a follow up to our recent study of a large sample of LMC clusters (astro-ph/0209031), we have conducted a similar study of the structures of ten SMC clusters, using archival Hubble Space Telescope snapshot data. We present surface…

天体物理学 · 物理学 2009-11-07 A. D. Mackey , G. F. Gilmore

We present mosaic images of the Small Magellanic Cloud (SMC) observed with the Spitzer IRAC 3.6 $\mu$m and 4.5 $\mu$m bands over two epochs, 2017 August 25 to 2017 September 13, and 2017 November 24 to 2018 February 12. The survey region…

星系天体物理 · 物理学 2022-10-21 D. R. Mizuno , Kathleen E. Kraemer , T. A. Kuchar , G. C. Sloan

In the context of a project aimed at characterizing the dynamical evolution of old globular clusters in the Large Magellanic Cloud, we have secured deep HST/WFC3 images of the massive cluster NGC 1835. In the field of view of the acquired…

The structure and dynamics of the star-forming disk of the Small Magellanic Cloud (SMC) have long confounded us. The SMC is widely used as a prototype for galactic physics at low metallicity, and yet we fundamentally lack an understanding…