Results 21 to 30 of about 2,559,994 (252)

DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission [PDF]

, 2011
We present a method which uses colour–colour cuts on the Sloan Digital Sky Survey (SDSS) photometry to select white dwarfs with hydrogen-rich (DA) atmospheres without the recourse to spectroscopy.
Farihi, J., Breedt, E, J. Girven, Koester, Detlev, Gänsicke, B. T., Gänsicke, BT, Farihi, J, Koester, D, Steeghs, D., Gaensicke, B. T., Koester, D., Girven, Jonathan, Breedt, E., D. Koester, Parsons, S. G., D. Steeghs, Parsons, SG, Girven, J., B. T. Gänsicke, Girven, J   +19 more
core   +1 more source

DETECTION OF A WHITE DWARF COMPANION TO THE WHITE DWARF SDSSJ125733.63+542850.5 [PDF]

The Astrophysical Journal, 2011
SDSSJ125733.63+542850.5 (hereafter SDSSJ1257+5428) is a compact white dwarf binary from the Sloan Digital Sky Survey that exhibits high-amplitude radial velocity variations on a period of 4.56 hours. While an initial analysis suggested the presence of a neutron star or black-hole binary companion, a follow-up study concluded that the spectrum was ...
Marsh, T. R., Gaensicke, B. T., Steeghs, D., Southworth, J., Koester, Detlev, Harris, V., Merry, L.   +6 more
openaire   +3 more sources

Atmospheres of brown dwarfs [PDF]

, 2014
ChH highlights financial support of the European Community under the FP7 by an ERC starting grant. SLC acknowledges financial support of University of LeicesterBrown Dwarfs are the coolest class of stellar objects known to date. Our present perception is
Casewell, Sarah, Helling, Christiane
core   +1 more source

Magnetic white dwarfs in post-common-envelope binaries [PDF]

, 2021
Magnitude-limited samples have shown that 20-25 per cent of cataclysmic variables contain white dwarfs with magnetic fields of Mega Gauss strength, in stark contrast to the approximately 5 per cent of single white dwarfs with similar magnetic field ...
Gänsicke, B.T., Schreiber, M.R., Parsons, S.G., Marsh, T.R., Meusinger, H., Ashley, R.P., Breedt, E., Littlefair, S.P.   +7 more
core   +1 more source

Constraining the Milky Way potential with Double White Dwarfs [PDF]

, 2018
The upcoming LISA mission is the only experiment that will allow us to study the Milky Way’s structure using gravitational wave signals from Galactic double white dwarfs (DWDs). The total number of expected detections exceeds 105.
Barausse, Enrico, Rossi, Elena Maria, Korol, Valeriya   +2 more
core   +3 more sources

A New Look at Magnetic White Dwarfs [PDF]

, 2018
The 21st European Workshop on White Dwarfs was held in Austin, TX from July 23rd to 27th of 2018We present a homogeneous photometric analysis of a large sample of magnetic DA white dwarfs as well as selected results from a spectrophotometric analysis ...
Hardy, F., Jordan, S., Dufour, P.
core   +1 more source

Magnetic dynamos in white dwarfs – III: explaining the occurrence of strong magnetic fields in close double white dwarfs [PDF]

, 2022
The origin of strong (⁠∼>1MG⁠) magnetic fields in white dwarfs has been a puzzle for decades. Recently, a dynamo mechanism operating in rapidly rotating and crystallizing white dwarfs has been suggested to explain the occurrence rates of strong magnetic ...
Zapata, Sarai, Parsons, Steven G., Belloni, Diogo, Schreiber, M.R., Gänsicke, B.T., Belloni, D., Zorotovic, M., Parsons, S.G., Gaensicke, Boris T., Zapata, S., Schreiber, Matthias R., Zorotovic, Monica   +11 more
core   +1 more source

Luminosity and cooling suppression in magnetized white dwarfs [PDF]

, 2018
The 21st European Workshop on White Dwarfs was held in Austin, TX from July 23rd to 27th of 2018We investigate the luminosity and cooling of highly magnetized white dwarfs where cooling occurs by the diffusion of photons.
Bhattacharya, M., Mukerjee, S., Mukhopadhyay, B.   +2 more
core   +1 more source

Forever young white dwarfs: When stellar ageing stops [PDF]

, 2021
White dwarf stars are the most common end point of stellar evolution. The ultramassive white dwarfs are of special interest as they are related to type Ia supernovae explosions, merger events, and fast radio bursts. Ultramassive white dwarfs are expected
Santiago Torres, Roberto Raddi, Rebassa Mansergas, Alberto, Cheng, Sihao, Alejandro H. Córsico, Pier-Emmanuel Tremblay, Althaus, Leandro Gabriel, María E. Camisassa, Tremblay, P. E., Torres Gil, Santiago, Sihao Cheng, Corsico, Alejandro Hugo, Althaus, Leandro G., Tremblay, Pier Emmanuel, Raddi, Roberto, Leandro G. Althaus, Camisassa, María E., Torres, Santiago, Córsico, Alejandro H., Tremblay, Pier-Emmanuel, Rebassa-Mansergas, Alberto, Alberto Rebassa-Mansergas, Camisassa, María Eugenia   +22 more
core   +1 more source

An Exploration of Spotted White Dwarfs from K2 [PDF]

, 2018
The 21st European Workshop on White Dwarfs was held in Austin, TX from July 23rd to 27th of 2018The Kepler K2 mission has discovered a significant population of white dwarf stars that exhibit photometric variability due to surface inhomogeneities ...
Reding, Joshua S., Clemens, J. Christopher, Hermes, J. J.   +2 more
core   +1 more source