Two decades of optical timing of the shortest-period binary star system HM Cancri

Autor: James Munday, T R Marsh, Mark Hollands, Ingrid Pelisoli, Danny Steeghs, Pasi Hakala, Elmé Breedt, Alex Brown, V S Dhillon, Martin J Dyer, Matthew Green, Paul Kerry, S P Littlefair, Steven G Parsons, Dave Sahman, Sorawit Somjit, Boonchoo Sukaum, James Wild

Publikováno v: Monthly Notices of the Royal Astronomical Society. 518:5123-5139

The shortest-period binary star system known to date, RX J0806.3+1527 (HM Cancri), has now been observed in the optical for more than two decades. Although it is thought to be a double degenerate binary undergoing mass transfer, an early surprise was

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::602ef0fa984107200ef0956755f5d7e4
https://doi.org/10.1093/mnras/stac3385

Constraining the evolution of cataclysmic variables via the masses and accretion rates of their underlying white dwarfs

Autor: S. Kafka, Tom Marsh, Arto Oksanen, Diogo Belloni, Daisaku Nogami, M. J. Cook, Peter Nelson, Roger D. Pickard, Dean M. Townsley, Edward M. Sion, Elmé Breedt, Christian Knigge, Daniel E. Reichart, Rod Stubbings, Matthias R. Schreiber, Vladimir Kouprianov, Boris T. Gänsicke, Patrick Godon, Paula Szkody, Odette Toloza, Berto Monard, Jeremy Shears, D. de Martino, Lars Bildsten, Gary Poyner, Steven G. Parsons, D. Rodriguez Perez, David Boyd, Knox S. Long, A. F. Pala, Gordon Myers

Publikováno v: Monthly Notices of the Royal Astronomical Society. 510:6110-6132

We report on the masses ($M_\mathrm{WD}$), effective temperatures ($T_\mathrm{eff}$) and secular mean accretion rates ($\langle \dot{M} \rangle$) of 43 cataclysmic variable (CV) white dwarfs, 42 of which were obtained from the combined analysis of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ec8b1229a8d0b22024aa700bddf0de1
https://doi.org/10.1093/mnras/stab3449

The White Dwarf Binary Pathways Survey – IV. Three close white dwarf binaries with G-type secondary stars

Autor: E Pastén, Matthias R. Schreiber, Puji Irawati, Alberto Rebassa-Mansergas, Roberto Raddi, M. S. Hernandez, F. Lagos, Steven G. Parsons, Jinwei Ren, Boris T. Gänsicke, P. Rittipruk, G. H. Tovmassian, Monica Zorotovic, Odette Toloza, Claus Tappert

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Digital.CSIC. Repositorio Institucional del CSIC
instname

Constraints from surveys of post-common envelope binaries (PCEBs) consisting of a white dwarf plus an M-dwarf companion have led to significant progress in our understanding of the formation of close white dwarf binary stars with low-mass companions.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::200745209c79110785e5f5f62196f56f
https://doi.org/10.1093/mnras/staa3815

Magnetic dynamos in white dwarfs -III: explaining the occurrence of strong magnetic fields in close double white dwarfs

Autor: Matthias R Schreiber, Diogo Belloni, Monica Zorotovic, Sarai Zapata, Boris T Gänsicke, Steven G Parsons

The origin of strong 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 fields

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5754e56a0510047aa4f42938397a46e
http://arxiv.org/abs/2204.07901

WD1032 + 011, an inflated brown dwarf in an old eclipsing binary with a white dwarf

Autor: T. R. Marsh, Don Winget, Boris T. Gänsicke, V. S. Dhillon, S. P. Littlefair, Zachary P. Vanderbosch, Claudia Belardi, John H. Debes, Sarah L. Casewell, J. J. Hermes, I. P. Braker, Steven G. Parsons, K. I. Winget, Matthew R. Burleigh

Publikováno v: Monthly Notices of the Royal Astronomical Society. 497:3571-3580

We present the discovery of only the third brown dwarf known to eclipse a non-accreting white dwarf. Gaia parallax information and multi-colour photometry confirm that the white dwarf is cool (9950$\pm$150K) and has a low mass (0.45$\pm$0.05~MSun), a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::317078dc9e0a39cafd74a99d0efd4cef
https://doi.org/10.1093/mnras/staa1608