Zobrazeno 1 - 10
of 168
pro vyhledávání: '"Parsons, Steven"'
Autor:
Chakraborty, Joheen, Burdge, Kevin B., Rappaport, Saul A., Munday, James, Chen, Hai-Liang, Rodríguez-Gil, Pablo, Dhillon, V. S., Hughes, Scott A., Nelemans, Gijs, Kara, Erin, Bellm, Eric C., Brown, Alex J., Segura, Noel Castro, Chen, Tracy X., Chickles, Emma, Dyer, Martin J., Dekany, Richard, Drake, Andrew J., Garbutt, James, Graham, Matthew J., Green, Matthew J., Jarvis, Dan, Kennedy, Mark R., Kerry, Paul, Kulkarni, S. R., Littlefair, Stuart P., Mahabal, Ashish A., Masci, Frank J., McCormac, James, Parsons, Steven G., Pelisoli, Ingrid, Pike, Eleanor, Prince, Thomas A., Riddle, Reed, van Roestel, Jan, Sahman, Dave, Wold, Avery, Wong, Tin Long Sunny
We report the discovery of three ultracompact binary white dwarf systems hosting accretion disks, with orbital periods of 7.95, 8.68, and 13.15 minutes. This significantly augments the population of mass-transferring binaries at the shortest periods,
Externí odkaz:
http://arxiv.org/abs/2411.12796
Autor:
Lagos-Vilches, Felipe, Hernandez, Mercedes, Schreiber, Matthias R., Parsons, Steven G., Gänsicke, Boris T.
Extremely-low-mass white dwarfs (ELM WDs) with non-degenerate companions are believed to originate from solar-type main-sequence binaries undergoing stable Roche lobe overflow mass transfer when the ELM WD progenitor is at (or just past) the terminat
Externí odkaz:
http://arxiv.org/abs/2410.06247
Autor:
Iskandarli, Leyla, Farihi, Jay, Lothringer, Joshua D., Parsons, Steven G., De Marco, Orsola, Rauch, Thomas
The Helix is a visually striking and the nearest planetary nebula, yet any companions responsible for its asymmetric morphology have yet to be identified. In 2020, low-amplitude photometric variations with a periodicity of 2.8 d were reported based o
Externí odkaz:
http://arxiv.org/abs/2410.03288
Autor:
Rebassa-Mansergas, Alberto, Hollands, Mark, Parsons, Steven G., Althaus, Leandro G., Pelisoli, Ingrid, Irawati, Puji, Raddi, Roberto, Camisassa, Maria E., Torres, Santiago
Publikováno v:
A&A 686, A221 (2024)
Ultra-short period compact binaries are important sources of gravitational waves, which include e.g. the progenitors of type Ia supernovae or the progenitors of merger episodes that may lead to massive and magnetic single white dwarfs. J0526+5934 is
Externí odkaz:
http://arxiv.org/abs/2402.04443
Autor:
Hernandez, Mercedes S., Schreiber, Matthias R., Landstreet, John D., Bagnulo, Stefano, Parsons, Steven G., Chavarria, Martin, Toloza, Odette, Bell, Keaton J.
Recent surveys of close white dwarf binaries as well as single white dwarfs have provided evidence for the late appearance of magnetic fields in white dwarfs, and a possible generation mechanism a crystallization and rotation-driven dynamo has been s
Externí odkaz:
http://arxiv.org/abs/2401.15158
Autor:
Belloni, Diogo, Zorotovic, Monica, Schreiber, Matthias R., Parsons, Steven G., Moe, Maxwell, Garbutt, James A.
Publikováno v:
A&A 686, A61 (2024)
In this first in a series of papers related to long-period post-common-envelope (CE) binaries, we investigated whether extra energy is required or not to explain the currently known post-CE binaries with sufficiently long orbital periods consisting o
Externí odkaz:
http://arxiv.org/abs/2401.07692
Autor:
Green, Matthew J., Hermes, J. J., Barlow, Brad N., Marsh, T. R., Pelisoli, Ingrid, Gänsicke, Boris T., Kaiser, Ben C., Romero, Alejandra, Amaral, Larissa Antunes, Corcoran, Kyle, Grupe, Dirk, Kennedy, Mark R., Kepler, S. O., Munday, James, Ashley, R. P., Baran, Andrzej S., Breedt, Elmé, Brown, Alex J., Dhillon, V. S., Dyer, Martin J., Kerry, Paul, King, George W., Littlefair, S. P., Parsons, Steven G., Sahman, David I.
AM CVn-type systems are ultracompact, helium-accreting binary systems which are evolutionarily linked to the progenitors of thermonuclear supernovae and are expected to be strong Galactic sources of gravitational waves detectable to upcoming space-ba
Externí odkaz:
http://arxiv.org/abs/2311.01255
Autor:
Caiazzo, Ilaria, Burdge, Kevin B., Tremblay, Pier-Emmanuel, Fuller, James, Ferrario, Lilia, Gaensicke, Boris T., Hermes, J. J., Heyl, Jeremy, Kawka, Adela, Kulkarni, S. R., Marsh, Thomas R., Mroz, Przemek, Prince, Thomas A., Richer, Harvey B., Rodriguez, Antonio C., van Roestel, Jan, Vanderbosch, Zachary P., Vennes, Stephane, Wickramasinghe, Dayal, Dhillon, Vikram S., Littlefair, Stuart P., Munday, James, Pelisoli, Ingrid, Perley, Daniel, Bellm, Eric C., Breedt, Elme, Brown, Alex J., Dekany, Richard, Drake, Andrew, Dyer, Martin J., Graham, Matthew J., Green, Matthew J., Laher, Russ R., Kerry, Paul, Parsons, Steven G., Riddle, Reed L., Rusholme, Ben, Sahman, Dave I.
Publikováno v:
Nature 620, 61-66 (2023)
White dwarfs, the extremely dense remnants left behind by most stars after their death, are characterised by a mass comparable to that of the Sun compressed into the size of an Earth-like planet. In the resulting strong gravity, heavy elements sink t
Externí odkaz:
http://arxiv.org/abs/2308.07430
Autor:
Munday, James, Tremblay, P. -E., Hermes, J. J., Barlow, Brad, Pelisoli, Ingrid, Marsh, T. R., Parsons, Steven G., Jones, David, Kepler, S. O., Brown, Alex, Littlefair, S. P., Hegedus, R., Baran, Andrzej, Breedt, Elmé, Dhillon, V. S., Dyer, Martin J., Green, Matthew J., Kennedy, Mark R., Kerry, Paul, Lopez, Isaac D., Romero, Alejandra D., Sahman, Dave, Worters, Hannah L.
We present the discovery of the eclipsing double white dwarf (WD) binary WDJ 022558.21-692025.38 that has an orbital period of 47.19 min. Following identification with the Transiting Exoplanet Survey Satellite, we obtained time-series ground based sp
Externí odkaz:
http://arxiv.org/abs/2308.00036
Autor:
Brown, Alex J., Parsons, Steven G., van Roestel, Jan, Rebassa-Mansergas, Alberto, Breedt, Elmé, Dhillon, Vik S., Dyer, Martin J., Green, Matthew J., Kerry, Paul, Littlefair, Stuart P., Marsh, Thomas R., Munday, James, Pelisoli, Ingrid, Sahman, David I., Wild, James F.
Wide-field time-domain photometric sky surveys are now finding hundreds of eclipsing white dwarf plus M dwarf binaries, a population encompassing a wealth of information and potential insight into white dwarf and close binary astrophysics. Precise fo
Externí odkaz:
http://arxiv.org/abs/2302.11392