Results 11 to 20 of about 58,723 (257)

AntonelliLab/raxmlGUI-binaries: 21.09.22

open access: yes, 2021
RAxML binaries used by ...
Johannes Klein, Daniel Edler
core   +1 more source

Compact objects in active galactic nuclei and X-ray binaries [PDF]

open access: yes, 2007
In this thesis I study the inner-most regions of Active Galactic Nuclei (AGN) using the reverberation mapping technique, and neutron star low-mass X-ray binaries in quiescence using X-ray observations. Using the 13-year optical monitoring data for the
Cackett, Edward M.
core   +2 more sources

Absolute dimensions of eclipsing binaries. XXVI, Setting a new standard : masses, radii, and abundances for the F-type systems AD Bootis, VZ Hydrae, and WZ Ophiuchi [PDF]

open access: yes, 2008
Context. Accurate mass, radius, and abundance determinations from binaries provide important information on stellar evolution, fundamental to central fields in modern astrophysics and cosmology. Aims.
Southworth, J.   +19 more
core   +1 more source

Constructing and deconstructing binaries in education research [PDF]

open access: yes, 2011
This chapter interrogates the concept of the binary – a representation based on an either/or logic – in relation to contemporary education research. Discussion focuses on multiple definitions and conceptualizations of binaries and diverse examples of ...
Midgley, Warren   +3 more
core   +1 more source

Faint galactic X-ray binaries [PDF]

open access: yes, 2008
We present a short overview of the properties of faint Galactic X‐ray binaries. We place emphasis on current classification scenarios. One of the important parameters for the faint sources is their intrinsic luminosity.
Gelino, Christopher R.   +13 more
core   +1 more source

The evolutionary state of short-period magnetic white dwarf binaries [PDF]

open access: yes, 2012
We present phase-resolved spectroscopy of two new short-period low accretion rate magnetic binaries, SDSS J125044.42+154957.3 (Porb= 86 min) and SDSS J151415.65+074446.5 (Porb= 89 min).
Marsh, Tom   +15 more
core   +1 more source

An additional pulsating mode (7.35 mHz) and pulsations timing variations of PG 1613+426

open access: yesOpen 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]

open access: yesJournal 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

Constraining Roche-Lobe Overflow Models Using the Hot-Subdwarf Wide Binary Population

open access: yesOpen 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

Optical Observations with Milliarcsecond Resolution of Stars, Their Environments and Companions [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2012
Observations with milliarsecond resolution using the Navy Optical Interferometer have been obtained for a number of stellar systems which include high-mass binaries, eclipsing binaries, and radio stars.
Jason J. Sanborn, Robert T. Zavala
doaj   +1 more source

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