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相关论文: An estimate of the structural parameters of the La…

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The structural parameters, like the inclination, i and the position angle of the line of nodes (PA_lon) of the disk of the Large Magellanic Cloud (LMC) are estimated using the JH photometric data of red clump stars from the Infrared Survey…

星系天体物理 · 物理学 2015-06-12 Smitha Subramanian , Annapurni Subramaniam

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

We present a study of the three-dimensional (3D) structure of the Large Magellanic Cloud (LMC) using ~2.2 million red clump (RC) stars selected from the Survey of the MAgellanic Stellar History. To correct for line-of-sight dust extinction,…

We used the red clump stars from the photometric data of the Optical Gravitational Lensing Experiment(OGLE II) survey and the Magellanic Cloud Photometric Survey (MCPS) for both the Clouds to estimate the depth.The observed dispersion in…

天体物理学 · 物理学 2011-07-21 Smitha Subramanian , Annapurni Subramaniam

We present an analysis of the 3-D structure of the Magellanic Clouds, using period-luminosity (P-L) relations of pulsating red giants in the OGLE-II sample. By interpreting deviations from the mean P-L relations as distance modulus…

天体物理学 · 物理学 2009-11-10 P. Lah , L. L. Kiss , T. R. Bedding

We present a detailed investigation of the Large Magellanic Cloud (LMC) disk using classical Cepheids. Our analysis is based on optical (I,V; OGLE-IV), near-infrared (NIR: J,H,Ks) and mid-infrared (MIR: w1; WISE) mean magnitudes. By…

The Large and Small Magellanic Clouds (LMC and SMC) are the Milky Way's nearest interacting galaxy pair, offering a unique laboratory for studying tidal effects on galactic disks. Despite extensive survey efforts, the three-dimensional…

We derive structural parameters and evidence for extended tidal debris from star count and preliminary standard candle analyses of the Large Magellanic Cloud based on Two Micron All Sky Survey (2MASS) data. The full-sky coverage and low…

天体物理学 · 物理学 2010-01-07 Martin D. Weinberg , Sergei Nikolaev

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

Following an approach developed by Paczy\'nski & Stanek, we derive a distance to the Large Magellanic Cloud (LMC) by comparing red clump stars from the Hipparcos catalog with the red clump stars observed in two fields in the LMC that were…

天体物理学 · 物理学 2009-10-30 K. Z. Stanek , D. Zaritsky , J. Harris

We present a detailed study of the viewing angles of the LMC disk plane. We find that our viewing direction differs considerably from the commonly accepted values, which has important implications for the structure of the LMC. The…

天体物理学 · 物理学 2008-11-26 Roeland P. van der Marel , Maria-Rosa L. Cioni

Evidence of a mis-aligned secondary bar, within the primary bar of the Large Magellanic Cloud (LMC) is presented. The density distribution and the de-reddened mean magnitudes ($I_0$) of the red clump stars in the bar obtained from the OGLE…

天体物理学 · 物理学 2009-11-10 Annapurni Subramaniam

We present the most extensive and detailed reddening maps of the Magellanic Clouds (MCs) derived from the color properties of Red Clump (RC) stars. The analysis is based on the deep photometric maps from the fourth phase of the Optical…

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

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 3D structure of the inner Small Magellanic Cloud (SMC) is investigated using the red clump (RC) stars and the RR Lyrae stars (RRLS). The V and I pass bands photometric data from the Optical Gravitational Lensing Experiment (OGLE III)…

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

Galaxy interactions distort the distribution of baryonic matter and can affect star formation. The nearby Magellanic Clouds are a prime example of an ongoing galaxy interaction process. Here we use the intermediate-age ($\sim1$-$10$ Gyr)…

The bar of the Large Magellanic Cloud (LMC) is one of the prominent, but controversial feature regarding its location with respect to the disk of the LMC. In order to study the relative location of the bar with respect to the disk, we…

宇宙学与河外天体物理 · 物理学 2015-05-13 Annapurni Subramaniam , Smitha Subramanian

I construct a near-IR star count map of the LMC and demonstrate, using the viewing angles derived in Paper I, that the LMC is intrinsically elongated. I argue that this is due to the tidal force from the Milky Way. The near-IR data from the…

天体物理学 · 物理学 2009-11-06 Roeland P. van der Marel

We present results from a study of the distances and distribution of a sample of intermediate-age clusters in the Large Magellanic Cloud. Using deep near-infrared photometry obtained with ISPI on the CTIO 4m, we have measured the apparent…

天体物理学 · 物理学 2009-06-23 A. J. Grocholski , A. Sarajedini , K. A. G. Olsen , G. P. Tiede , C. L. Mancone
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