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相关论文: The Distance to the LMC via the Eclipsing Binary H…

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We study the kinematics of luminous blue variables (LBVs) in the Large Magellanic Cloud (LMC). Using high-resolution spectra, we measure the systemic radial velocities for a sample of 16 LBVs and LBV candidates. In order to measure the net…

太阳与恒星天体物理 · 物理学 2022-08-11 Mojgan Aghakhanloo , Nathan Smith , Jennifer Andrews , Knut Olsen , Gurtina Besla , Yumi Choi

The first multiband photometric solutions of the short-period V Gru eclipsing binary from the southern hemisphere is presented in this study. Light curves of the system were observed through BVI filters at the Congarinni Observatory in…

太阳与恒星天体物理 · 物理学 2023-04-26 Mehmet Tanriver , Atila Poro , Ahmet Bulut , Ahmet Keskin , Mark G. Blackford

Determining the distance to the open cluster M29 (NGC 6913) has proven difficult, with distances determined by various authors differing by a factor of two or more. To solve this problem, we have initiated a new photometric investigation of…

We present a method for solving the lightcurve of an eclipsing binary system which contains a Cepheid variable as one of its components as well as the solutions for three eclipsing Cepheids in the Large Magellanic Cloud (LMC). A geometric…

E(V$-$I) reddening values for 1123 locations in the bar region of the Large Magellanic Cloud are presented. V, I photometry of red clump stars identified in the Optical Gravitational Lensing Experiment II catalogue of LMC were used to…

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

This paper presents a careful and detailed light curve analysis of bright detached eclipsing binaries (DEB) in the Small Magellanic Cloud, discovered by OGLE collaboration, on the basis of recently available difference image analysis (DIA)…

天体物理学 · 物理学 2009-11-07 Dariusz Graczyk

The distance to NGC 7331 has been derived from Cepheid variables observed with HST/WFPC2, as part of the Extragalactic Distance Scale Key Project. Multi-epoch exposures in F555W (V) and F814W (I), with photometry derived independently from…

We present an extinction map of the Large Magellanic Cloud (LMC), using 204,502 stars from the Two Micron All Sky Survey point source catalog. We first use the NICE method to determine the reddening distribution, \ehk and \ejh, which we…

天体物理学 · 物理学 2011-02-11 Nia Imara , Leo Blitz

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…

宇宙学与河外天体物理 · 物理学 2019-05-15 Adam G. Riess , Stefano Casertano , Wenlong Yuan , Lucas M. Macri , Dan Scolnic

Aims. We present new photometry of the faint and poorly studied cataclysmic variable SDSS J152419.33+220920.0, analyze its light curve and provide an accurate ephemeris for this system. Methods. Time-resolved CCD differential photometry was…

太阳与恒星天体物理 · 物理学 2015-06-15 R. Michel , J. Echevarria , J. V. Hernandez-Santisteban

The distance to the Large Magellanic Cloud (LMC) has long been of key importance for the distance ladder and the distances to all galaxies, and as such many groups have provided measurements of its distance modulus (\mu) with many methods…

天体物理学 · 物理学 2009-06-23 Bradley E. Schaefer

We present the physical parameters of an eclipsing binary system EPIC 211982753 derived through photometric and radial velocity data modeling. We make use of photometric data from NASA's K2 mission, ASAS-SN, and 1.3-m Devasthal Fast Optical…

太阳与恒星天体物理 · 物理学 2023-08-23 Alaxender Panchal , Yogesh C. Joshi

We present the results of non-linear pulsation modelling of 20 bump Cepheids in the LMC. By obtaining a optimal fit to the observed V,R MACHO lightcurves we have placed tight constraints on stellar parameters of M, L, Teff and well as…

天体物理学 · 物理学 2009-11-07 Stefan C. Keller , Peter R. Wood

We present J, H, Ks photometry from the the Multi conjugate Adaptive optics Demonstrator (MAD), a visitor instrument at the VLT, of a resolved stellar population in a small crowded field in the bar of the Large Magellanic Cloud near the…

天体物理仪器与方法 · 物理学 2015-05-30 G. Fiorentino , E. Tolstoy , E. Diolaiti , E. Valenti , M. Cignoni , A. D. Mackey

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

BVI photometry of the Magellanic Clouds collected during the OGLE-II microlensing experiment makes it possible to study in detail photometric properties of the "major" stellar distance indicators in the Magellanic Clouds. In addition to…

天体物理学 · 物理学 2007-05-23 A. Udalski

The VISTA survey of the Magellanic Clouds System (VMC) is collecting deep $K_\mathrm{s}$--band time--series photometry of the pulsating variable stars hosted in the system formed by the two Magellanic Clouds and the Bridge connecting them.…

We present echelle spectroscopic data for five eclipsing binary stars and two giant stars in the field of the open cluster NGC 2243. The average cluster velocity is determined to be +60.4 +- 0.6 km/s. Four of the eclipsing binaries are very…

天体物理学 · 物理学 2007-05-23 J. Kaluzny , W. Pych , S. M. Rucinski , I. B. Thompson

In this paper, we present standard Johnson UBV photometry of the eclipsing binary BD+36 3317 which is known as a member of Delta Lyrae (Stephenson 1) cluster. We determined colors and brightness of the system, calculated E(B - V) color…

太阳与恒星天体物理 · 物理学 2012-07-03 O. Özdarcan , E. Sipahi , H. A. Dal

In the standard view of massive star evolution, luminous blue variables (LBVs) are transitional objects between the most massive O-type stars and Wolf-Rayet (WR) stars. With short lifetimes, these stars should all be found near one another.…

太阳与恒星天体物理 · 物理学 2019-01-04 Erin Aadland , Philip Massey , Kathryn F. Neugent , Maria R. Drout