نتایج جستجو برای: مدل lmc

تعداد نتایج: 122299  

2008
T. Mazeh O. Tamuz

In the first paper of this series we presented EBAS, a new fully automated algorithm to analyse the lightcurves of eclipsing binaries, based on the EBOP code. Here we apply the new algorithm to the whole sample of 2580 binaries found in the OGLE LMC photometric survey and derive the orbital elements for 1931 systems. To obtain the statistical properties of the short-period binaries of the LMC w...

2002
David R. Alves Dante Minniti

The Hipparcos I-band calibration of horizontal-branch red clump giants as standard candles has lead to controversial results for the distance to the Large Magellanic Cloud (LMC). In an attempt to properly ascertain the corrections for interstellar extinction and clump age and metallicity, we analyze new multiwavelength luminosity functions of the LMC red clump. Our photometry dataset in the K-b...

2009
S. Subramanian

Context. A systematic estimation of the line of sight depth in the disk and bar regions of the Large and Small Magellanic Clouds (LMC and SMC) using red clump stars is presented. Aims. 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....

Journal: :Monthly Notices of the Royal Astronomical Society 2021

We present the results obtained from detailed spectral and timing studies of extra-galactic black hole X-ray binaries LMC~X--1 LMC~X--3, using simultaneous observations with {\it Nuclear Spectroscopic Telescope Array (NuSTAR)} Neil Gehrels Swift} observatories. The combined spectra in $0.5-30$~keV energy range, between 2014 2019, are investigated for both sources. do not find any noticeable var...

2002
J. Christopher Howk Kenneth R. Sembach Blair D. Savage Scott D. Friedman AlexW. Fullerton

We present Far Ultraviolet Spectroscopic Explorer (FUSE) observations of interstellar O vi absorption toward 12 early-type stars in the LargeMagellanic Cloud (LMC). The observations have a velocity resolution of.20 km s 1 (FWHM) and clearly show O vi 1031.926 Å absorption at LMC velocities toward all 12 stars. From these observations we derive column densities of interstellar O vi in this nearb...

2015
Paola Friedrich Catherine G. Lam Elena Itriago Rafael Perez Raul C. Ribeiro Ramandeep S. Arora Ji-Hyun Lee

BACKGROUND Treatment abandonment (TxA) is recognized as a leading cause of treatment failure for children with cancer in low-and-middle-income countries (LMC). However, its global frequency and burden have remained elusive due to lack of global data. This study aimed to obtain an estimate using survey and population data. METHODS Childhood cancer clinicians (medical oncologists, surgeons, and...

1999
J. Koornneef

ORFEUS far UV echelle spectra have been used to investigate H I, H2 and CO absorption lines along the line of sight towards LH 10:3120 in the LMC, extending the study presented by de Boer et al. (1998). While H2 absorption is clearly visible, no CO absorption at LMC velocities is detected, but an upper limit of N(CO) ≤ 3.3 × 10 cm for the CO column density is derived for the C-X band near 1088 ...

2003
Ata Sarajedini Maria Teresa Ruiz

We obtained new VLT/ISAAC H-band observations for five MACHO LMC source stars and adjacent LMC field regions. After combining our near-IR photometry with HST/PC BVRI optical photometry, we compared the MACHO objects to the adjacent field stars in a variety of color-magnitude and color-color diagrams. These diagnostic diagrams were chosen to be sensitive to our hypothesis that at least some of t...

2005
M. - R. L. Cioni L. Girardi P. Marigo H. J. Habing

AGB stars in the Magellanic Clouds. II. The rate of star formation across the LMC. Abstract. This article compares the distribution of Ks magnitude of Large Magellanic Cloud (LMC) asymptotic giant branch (AGB) stars obtained from the DENIS and 2MASS data with theoretical distributions. These have been constructed using up-to-date stellar evolution calculations for low and intermediate-mass star...

2007
A. Becker D. P. Bennett G. C. Clayton K. H. Cook K. C. Freeman K. Griest J. A. Guern D. Kilkenny M. J. Lehner S. L. Marshall D. Minniti B. A. Peterson M. R. Pratt P. J. Quinn A. W. Rodgers C. W. Stubbs

We report the discovery of two new R Coronae Borealis (RCB) stars in the Large Magellanic Cloud (LMC) using the MACHO project photometry database. The identiication of both stars has been connrmed spectroscopically. One is a cool RCB star (T eff 5000 K) characterized by very strong Swan bands of C 2 and violet bands of CN, and weak or absent Balmer lines, G-band and 12 C 13 C bands. The second ...

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