Results 41 to 50 of about 1,134,125 (370)
Constraining Roche-Lobe Overflow Models Using the Hot-Subdwarf Wide Binary Population
Open Astronomy, 2017 One of the important issues regarding the final evolution of stars is the impact of binarity. A rich zoo of peculiar, evolved objects are born from the interaction between the loosely bound envelope of a giant, and the gravitational pull of a companion ...
Vos Joris, Vučković Maja
doaj +1 more source
Galaxies, 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
Mass Transfer in Mira-Type Binaries
Open Astronomy, 2012 Detached, symbiotic binaries are generally assumed to interact via Bondi-Hoyle-Littleton (BHL) wind accretion. However, the accretion rates and outflow geometries that result from this mass-transfer mechanism cannot adequately explain the observations of
Mohamed S., Podsiadlowski Ph.
doaj +1 more source
Radiation Backgrounds at Cosmic Dawn: X-Rays from Compact Binaries [PDF]
, 2016 We compute the expected X-ray diffuse background and radiative feedback on the intergalactic medium (IGM) from X-ray binaries prior to and during the epoch of reionization. The cosmic evolution of compact binaries is followed using a population synthesis
P. Madau, T. Fragos
semanticscholar +1 more source
Binary and Millisecond Pulsars [PDF]
Living Reviews in Relativity, 1998 77 pages, 30 figures, available on-line at http://www.livingreviews.org/lrr-2005 ...
openaire +13 more sources
An additional pulsating mode (7.35 mHz) and pulsations timing variations of PG 1613+426
Open Astronomy, 2017 We present the detection of an additional pulsation mode (7.35 mHz) of a subdwarf B star, PG 1613+426, and periodic Observed minus Calculated (O-C) variations for two existing pulsations. PG 1613+426 is near the hot end of the sdB instability strip.
Otani Tomomi +5 more
doaj +1 more source
Under-Developed and Under-Utilized Eclipsing Binary Model Capabilities [PDF]
Journal of Astronomy and Space Sciences, 2012 Existing but largely unused binary star model capabilities are examined. An easily implemented scheme is parameterization of starspot growth and decay that can stimulate work on outer convection zones and their dynamos.
R. E. Wilson
doaj +1 more source
Prospects for detection of detached double white dwarf binaries with Gaia, LSST and LISA [PDF]
, 2017 Double white dwarf (DWD) binaries are expected to be very common in the Milky Way, but their intrinsic faintness challenges the detection of these systems. Currently, only a few tens of detached DWDs are know.
V. Korol +5 more
semanticscholar +1 more source
Formation of Neutral Disk-Like Zone Around the Active Hot Stars in Symbiotic Binaries
Open Astronomy, 2012 In this contribution we present the ionization structure in the enhanced wind from the hot star in symbiotic binaries during active phases. Rotation of the hot star leads to the compression of the outflowing material towards its equatorial plane.
Cariková Z., Skopal A.
doaj +1 more source
Incursiuni în imaginar, 2023 Reality and fiction build a binary which shared the fate of dualist thinking in general in the postmodernist age, dominated by deconstruction. The climactic point was probably reached by the fabrication of lens which magnify reality.
Maria-Ana Tupan
doaj +1 more source