Results 11 to 20 of about 431,891 (326)

Analysis of the eclipsing binaries in the LMC discovered by OGLE: Period distribution and frequency of the short-period binaries [PDF]

open access: yes, 2006
We review the results of our analysis of the OGLE LMC eclipsing binaries (Mazeh, Tamuz & North 2006), using EBAS -- Eclipsing Binary Automated Solver, an automated algorithm to fit lightcurves of eclipsing binaries (Tamuz, Mazeh & North 2006).
Duquennoy   +10 more
core   +2 more sources

Binary Be Stars and Be Binaries [PDF]

open access: yesSymposium - International Astronomical Union, 1992
Two hypotheses have been put forward for the rôle of binarity in Be stars: (1) All Be stars are interacting binaries. (2) Roughly one-half of the observed Be stars are post-mass exchange binaries with compact companions. Contrary to (1), (2) does not attempt to explain also the existence of disks in Be stars.
openaire   +1 more source

Cool Companions to White Dwarfs from the 2MASS Second Incremental Data Release [PDF]

open access: yes, 2002
We present near-infrared magnitudes for all white dwarfs (selected from the catalog of McCook & Sion) contained in the 2 Micron All Sky Survey Second Incremental Data Release(2MASS 2IDR). We show that the near-IR color-color diagram is an effective means
D. W. Hoard   +11 more
core   +3 more sources

ON THE MASS-RATIO OF THE ECLIPSING BINARIES OF W UMa TYPE

open access: yesOdessa Astronomical Publications, 2017
The discrepancy between the photometric and spectroscopic mass-ratio in W UMa-type systems is examined by using all the available mass-ratio data derived by modern techniques from photoelectric and radial velocity curves. The new additional data confirm,
P. G. Niarchos, H. W. Dnerbeck
doaj   +1 more source

On Exotic Objects Made of Dark Energy and Dark Matter: Mass-to-Radius Profiles and Tidal Love Numbers

open access: yesGalaxies, 2023
We investigate some properties of exotic spherical configurations made of dark matter and dark energy. For the former, we adopt a polytropic equation-of-state, while for the latter, we adopt the extended Chaplygin gas equation-of-state.
Camila Sepúlveda, Grigoris Panotopoulos
doaj   +1 more source

Improved Detection Rates for Close Binaries Via Astrometric Observations of Gravitational Microlensing Events [PDF]

open access: yes, 1999
In addition to constructing a Galactic matter mass function free from the bias induced by the hydrogen-burning limit, gravitational microlensing allows one to construct a mass function which is less affected by the problem of unresolved binaries (Gaudi &
Alard C.   +12 more
core   +3 more sources

Analyzing Binary Relationships of Identity Labels Using Distributional Semantic Models

open access: yesIperstoria, 2023
Following the shift towards quantitative, corpus-based analysis in queer linguistics, I examine the usage of identity labels to explore the binary relationships and predicted normative effects in the case of the online community r/lgbt, a subreddit ...
Hunter Youngquist
doaj   +1 more source

The Search for Symbiotic Stars in the IPHAS Survey

open access: yesOpen Astronomy, 2012
We have started a project to search for symbiotic stars using the data from IPHAS, the Hα survey of the Northern Galactic plane. Candidates are selected from the IPHAS photometric catalogue based on their colors, combined with the information in the near-
Corradi R. L. M.
doaj   +1 more source

Symbiotic Stars: Observations Confront Theory

open access: yesOpen Astronomy, 2012
In this paper, I present and discuss some recent observational results which may have important implications for our understanding of late phases of binary evolution.
Mikołajewska J.
doaj   +1 more source

LONG-TERM ACTIVITY CHANGES OF UV PISOIUM

open access: yesOdessa Astronomical Publications, 2017
UV Psc has been observed since 1976 at the Ankara and Ege University Observatories. Mean light curves in B and V colours obtained using the maxima levels of observed light curves of the system.
V. Keskin   +5 more
doaj   +1 more source

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