Fundamental Properties and Distances of Large Magellanic Cloud Eclipsing Binaries. III. EROS 1044

2002 ◽  
Vol 574 (2) ◽  
pp. 771-782 ◽  
Author(s):  
Ignasi Ribas ◽  
Edward L. Fitzpatrick ◽  
Frank P. Maloney ◽  
Edward F. Guinan ◽  
Andrzej Udalski
Keyword(s):  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Eclipsing Binaries ◽  
Fundamental Properties

Fundamental Properties and Distances of Large Magellanic Cloud Eclipsing Binaries. IV. HV 5936

2003 ◽  
Vol 587 (2) ◽  
pp. 685-700 ◽  
Author(s):  
E. L. Fitzpatrick ◽  
I. Ribas ◽  
E. F. Guinan ◽  
F. P. Maloney ◽  
A. Claret
Keyword(s):  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Eclipsing Binaries ◽  
Fundamental Properties

scholarly journals Fundamental Properties and Distances of the Large Magellanic Cloud from Eclipsing Binaries. II. HV 982

2002 ◽  
Vol 564 (1) ◽  
pp. 260-273 ◽  
Author(s):  
E. L. Fitzpatrick ◽  
I. Ribas ◽  
E. F. Guinan ◽  
L. E. DeWarf ◽  
F. P. Maloney ◽  
...  
Keyword(s):  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Eclipsing Binaries ◽  
Fundamental Properties

The MACHO Project Large Magellanic Cloud Variable Star Inventory. XII. Three Cepheid Variables in Eclipsing Binaries

2002 ◽  
Vol 573 (1) ◽  
pp. 338-350 ◽  
Author(s):  
C. Alcock ◽  
R. A. Allsman ◽  
D. R. Alves ◽  
A. C. Becker ◽  
D. P. Bennett ◽  
...  
Keyword(s):  
Variable Star ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Eclipsing Binaries ◽  
Cepheid Variables

scholarly journals Eclipsing Binaries in the Magellanic Clouds

2005 ◽  
Vol 13 ◽  
pp. 451-451
Author(s):  
Andrzej Udalski
Keyword(s):  
Gravitational Lensing ◽  
Direct Determination ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Eclipsing Binaries ◽  
Physical Parameters ◽  
Second Phase ◽  
Internet Archive ◽  
Pulsating Stars ◽  
Eclipsing Stars

We present results of a search for eclipsing binaries in the Magellanic Cloud fields covering central parts of these galaxies. The data were collected during the second phase of the Optical Gravitational Lensing Experiment survey (OGLE-II) in 1997-2000. In total, about 1500 and 3000 eclipsing stars were found in the Small and Large Magellanic Cloud, respectively (Udalski et al. 1998, Wyrzykowski et al. 2003). The photometric data of all objects are available to the astronomical community from the OGLE Internet archive (http://sirius.astrouw.edu.pl/~ogle/). OGLE-II data contain a full variety of classical eclipsing objects of all types: Algol EA-type, β-Lyr EB-type and W UMA EW-type stars. Large samples of stars allow to study in detail statistical properties of eclipsing objects. OGLE data also contain many very unusual eclipsing stars. Examples include eclipsing variable B-type stars (Mennickent et al. 2003), many spotted stars or eclipsing stars with a Cepheid as a component (Udalski et al. 1999). Recently three objects from the LMC revealing simultaneously RR Lyr and eclipsing binary type variability were discovered (Soszyński et al 2003). If the follow-up observations confirm that both components are physically bound and not optical blends these stars will provide a unique opportunity of direct determination of physical parameters of RR Lyr pulsating stars.

SHORT APSIDAL PERIOD OF THREE ECCENTRIC ECLIPSING BINARIES DISCOVERED IN THE LARGE MAGELLANIC CLOUD

2014 ◽  
Vol 147 (6) ◽  
pp. 151 ◽  
Author(s):  
Kyeongsoo Hong ◽  
Chung-Uk Lee ◽  
Seung-Lee Kim ◽  
Young-Woon Kang
Keyword(s):  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Eclipsing Binaries

scholarly journals Improved Light Curves of LMC Eclipsing Binaries

2005 ◽  
Vol 13 ◽  
pp. 461-461
Author(s):  
Young Woon Kang ◽  
Kyungsoo Hong ◽  
Woo-Baik Lee ◽  
Ho-Il Kim ◽  
Kyu-Dong Oh
Keyword(s):  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Eclipsing Binaries ◽  
Light Curves ◽  
Dispersion Method ◽  
Direct Observations ◽  
Continuum Energy ◽  
Curve Solution ◽  
Light Curve Solution ◽  
The Continuum

We present accurate BV light curves and continuum energy curves of the EROS eclipsing binaries in the Large Magellanic Cloud to find accurate binary parameters as well as their distances. The observations have been carried out using the 2.1 meter telescope in CASLEO Argentina during Feb. 1-10, 2003. We have concentrated CCD direct observations upon EROS field 1 and 2 to improve the accuracy of light curves of eclipsing binaries in the fields. The spectroscopic observations have been also carried out using the simple dispersion method to get continuum energy curves between wavelengths of 4000-8000 Å for several EROS eclipsing binaries. At first, we determined a combined temperature of both components of each binary system using the continuum. Then, the combined temperature was resolved using the first estimation of the light curve solution. Finally, we determined the photometric solutions of several binaries in the Large Magellanic Cloud.

The Large Magellanic Cloud Eclipsing Binary HV 2274: Fundamental Properties and Comparison with Evolutionary Models

2000 ◽  
Vol 528 (2) ◽  
pp. 692-701 ◽  
Author(s):  
Ignasi Ribas ◽  
Edward F. Guinan ◽  
Edward L. Fitzpatrick ◽  
Laurence E. DeWarf ◽  
Frank P. Maloney ◽  
...  
Keyword(s):  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Evolutionary Models ◽  
Eclipsing Binary ◽  
Fundamental Properties

scholarly journals The Stellar Complexes in the Large Magellanic Cloud

1999 ◽  
Vol 190 ◽  
pp. 452-453
Author(s):  
F. Maragoudaki ◽  
M. Kontizas ◽  
E. Kontizas ◽  
A. Dapergolas ◽  
D. H. Morgan
Keyword(s):  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Top Down ◽  
Star Forming ◽  
Contour Maps ◽  
Fundamental Properties ◽  
Star Forming Regions ◽  
Stellar Complexes

A method has been developed for the detection of stellar complexes and the derivation of their fundamental properties in the LMC. We have used digitized UKST plates in order to perform star counts and produce isodensity contour maps in various colours and luminosity slices. About 50 large stellar groupings have been revealed. Their properties favour a “top-down” mechanism acting in star forming regions.

scholarly journals Eclipsing binaries in local group galaxies: Physical properties of the stars and calibration of the zero-point of the cosmic distance scale

2004 ◽  
Vol 193 ◽  
pp. 363-371 ◽  
Author(s):  
Edward F. Guinan ◽  
Ignasi Ribas ◽  
Edward L. Fitzpatrick
Keyword(s):  
Physical Properties ◽  
Local Group ◽  
Zero Point ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Eclipsing Binaries ◽  
Host Galaxy ◽  
Nearby Galaxy ◽  
Host Galaxies ◽  
Metal Abundance

AbstractWe report on the progress of the program to study eclipsing binaries (EBs) in the Local Group galaxies. The primary goals of the program are to determine accurate distances and physical properties of the stars, and to probe the structure and evolution of the host galaxies. In particular, the distance to the Large Magellanic Cloud (LMC) is critically important because this nearby galaxy is used to calibrate most of the important cosmic distance indicators such as Cepheid and RR Lyr variables. Over the last several years, we have demonstrated that the distance of the LMC can be reliably measured using selected eclipsing binaries. The combined analyses of the UV/optical spectrophotometry, radial velocities, and light curves yield the stars’ physical properties (mass, radius, Teff, luminosity, metal abundance) and accurate (2–3%) distances. So far, the physical properties and distances of four LMC EBs have been completed and give a distance to the centroid of the LMC of 48.3 ± 1.6 kpc. Several additional EBs in the LMC and the Small Magellanic Cloud have been observed and are being analyzed. Also several LMC EBs have been observed with FUSE (92 – 119 nm) to further refine values of Teff and interstellar absorption. As an extension of these studies, 19–20th mag EBs in M31 are being observed photometrically and spectroscopically. The results of this extragalactic EB program are discussed along with plans to use EBs to study the host galaxy structure.

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