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Related papers: Geometry of the Large Magellanic Cloud Using Multi…

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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…

Astrophysics of Galaxies · Physics 2016-12-07 L. Inno , G. Bono , N. Matsunaga , G. Fiorentino , M. Marconi , B. Lemasle , R. da Silva , I. Soszyński , A. Udalski , M. Romaniello , H. -W. Rix

The period-luminosity (PL) relation of Cepheids in the Large Magellanic Cloud (LMC) plays a pivotal role in extra-galactic distance measurement and the determination of the Hubble constant $(H_{0})$. In this work, we probe the geometry of…

Astrophysics of Galaxies · Physics 2023-12-06 Gautam Bhuyan , Sukanta Deb , Shashi M. Kanbur , Earl P. Bellinger , Mami Deka , Anupam Bhardwaj

The new data for Cepheids and RR Lyrae stars of the Optical Gravitational Lensing Experiment (OGLE-III) survey allow us to study the three-dimensional distribution of stars corresponding to young (a few tens to a few hundreds of millions of…

Astrophysics of Galaxies · Physics 2015-06-05 Raoul Haschke , Eva K. Grebel , Sonia Duffau

Distance to the Large Magellanic Cloud (LMC) is determined using the Cepheid variables in the LMC. We combine the individual LMC Cepheid distances obtained from the infrared surface brightness method and a dataset with a large number of LMC…

Astrophysics · Physics 2015-05-13 C. Ngeow , S. Kanbur

We present observational details and first results of a near-infrared (JHKs) synoptic survey of the central region of the Large Magellanic Cloud using the CPAPIR camera at the CTIO 1.5-m telescope. We covered 18 sq. deg. to a depth of…

Solar and Stellar Astrophysics · Physics 2015-12-18 Lucas M. Macri , Chow-Choong Ngeow , Shashi M. Kanbur , Salma Mahzooni , Michael T. Smitka

We present the results of the light curve model fitting technique applied to optical and near-infrared photometric data for a sample of 18 Classical Cepheids (11 fundamentals and 7 first overtones) in the Large Magellanic Cloud (LMC). We…

We use data on variable stars from the Optical Gravitational Lensing Experiment (OGLE III) survey to determine the three-dimensional structure of the Small Magellanic Cloud (SMC). Deriving individual distances to RR Lyrae stars and Cepheids…

Astrophysics of Galaxies · Physics 2015-06-11 Raoul Haschke , Eva K. Grebel , Sonia Duffau

We present time-series observations of Population \rom{2} Cepheids in the Large Magellanic Cloud at near-infrared ($JHK_s$) wavelengths. Our sample consists of 81 variables with accurate periods and optical ($VI$) magnitudes from the OGLE…

Solar and Stellar Astrophysics · Physics 2017-03-22 Anupam Bhardwaj , Lucas M. Macri , Marina Rejkuba , Shashi M. Kanbur , Chow-Choong Ngeow , Harinder P. Singh

The VISTA Magellanic Cloud (VMC, PI M.R. Cioni) survey is collecting deep Ks-band time-series photometry of the pulsating variable stars hosted by the system formed by the two Magellanic Clouds (MCs) and the "bridge" connecting them. In…

The Cepheid Leavitt Law (LL), also known as the Period-Luminosity relation, is a crucial tool for assembling the cosmic distance ladder. By combining data from the OGLE-IV catalogue with mid-infrared photometry from the Spitzer Space…

Astrophysics of Galaxies · Physics 2020-10-21 Abigail H. Chown , Victoria Scowcroft , Stijn Wuyts

We present the first application of mid-infrared Period-Luminosity relations to the determination of a Cepheid distance beyond the Magellanic Clouds. Using archival IRAC imaging data on NGC 6822 from Spitzer we were able to measure…

The distance modulus of the Large Magellanic Cloud (LMC) is the first step on the determination of the cosmic distance scale. In this paper it is obtained from a new calibration of the classical Cepheid Period-Luminosity (PL) relation. Our…

Astrophysics · Physics 2007-05-23 Xavier Luri , J. Torra , F. Figueras , A. E. Gomez , M. J. Goupil , J. P. Beaulieu

We employed the {\it VISTA near-infrared $YJK_\mathrm{s}$ survey of the Magellanic System} (VMC), to analyse the $Y,\,J,\,K_\mathrm{s}$ light curves of $\delta$ Cepheid stars (DCEPs) in the Large Magellanic Cloud (LMC). Our sample consists…

Precise interstellar dust extinction laws are important to infer the intrinsic properties of reddened objects and correctly interpret observations. In this work, we attempt to measure the optical--infrared extinction laws of the Large and…

Astrophysics of Galaxies · Physics 2023-04-05 Shu Wang , Xiaodian Chen

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…

Cosmology and Nongalactic Astrophysics · Physics 2019-05-15 Adam G. Riess , Stefano Casertano , Wenlong Yuan , Lucas M. Macri , Dan Scolnic

The VMC survey is obtaining multi-epoch photometry in the Ks band of the Magellanic System down to a limiting magnitude of Ks ~ 19.3 for individual epoch data. The observations are spaced in time such as to provide optimal sampling of the…

We present a detailed statistical analysis of possible non-linearities in the Period-Luminosity (P-L), Period-Wesenheit (P-W) and Period-Color (P-C) relations for Cepheid variables in the LMC at optical ($VI$) and near-infrared ($JHK_{s}$)…

We present new accurate Period-Luminosity (PL) and Period-Wesenheit (PW) relations in the V,J,Ks bands based on a sample of more than 4500 Cepheids in the Large Magellanic Cloud (LMC) whose photometry was obtained in the context of the…

Solar and Stellar Astrophysics · Physics 2020-03-02 V. Ripepi , R. Molinaro , M. Marconi , M. -R. L. Cioni

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 new near-infrared Cepheid Period-Wesenheit relations in the LMC using time-series observations from the Large Magellanic Cloud Near-Infrared Synoptic Survey. We also derive optical$+$near-infrared P-W relations using $V$ and…

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