Zobrazeno 1 - 10
of 22
pro vyhledávání: '"D. I. Sahman"'
Autor:
S. Yotthanathong, Kevin B. Burdge, Elmé Breedt, T. R. Marsh, Richard Ashley, Ingrid Pelisoli, A. Aungwerojwit, Pasi Hakala, Martin J. Dyer, P. Kerry, M. J. Green, D. I. Sahman, V. S. Dhillon, S. P. Littlefair, A. J. Brown, K. Chanthorn, J. F. Wild, Steven G. Parsons
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 507:6132-6139
Accreting magnetic white dwarfs offer an opportunity to understand the interplay between spin-up and spin-down torques in binary systems. Monitoring of the white dwarf spin may reveal whether the white dwarf spin is currently in a state of near-equil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b164d6207f04a85a455a77979644e37b
https://doi.org/10.1093/mnras/stab2511
https://doi.org/10.1093/mnras/stab2511
Autor:
Ingrid Pelisoli, T R Marsh, S G Parsons, A Aungwerojwit, R P Ashley, E Breedt, A J Brown, V S Dhillon, M J Dyer, M J Green, P Kerry, S P Littlefair, D I Sahman, T Shahbaz, J F Wild, A Chakpor, R Lakhom
AR Scorpii (AR Sco) is the only radio-pulsing white dwarf known to date. It shows a broad-band spectrum extending from radio to X-rays whose luminosity cannot be explained by thermal emission from the system components alone, and is instead explained
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f33e875af296d3adab9796b39033d99
http://arxiv.org/abs/2208.08450
http://arxiv.org/abs/2208.08450
Autor:
Martin Dyer, S. P. Littlefair, V. S. Dhillon, P. Kerry, A. J. Brown, Tom Marsh, D. I. Sahman, Steven G. Parsons, Elmé Breedt, M. J. Green, Richard P. Ashley, J. F. Wild
Using photometric ULTRACAM observations of three new short period cataclysmic variables, we model the primary eclipse lightcurves to extract the orbital separation, masses, and radii of their component stars. We find donor masses of 0.060 +/- 0.008 s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2546b59fa629e9f6d1e665ae5211c7ab
http://wrap.warwick.ac.uk/160646/1/WRAP-system-parameters-three-short-period-cataclysmic-variable-stars-2022.pdf
http://wrap.warwick.ac.uk/160646/1/WRAP-system-parameters-three-short-period-cataclysmic-variable-stars-2022.pdf
Autor:
Alex J Brown, Steven G Parsons, Stuart P Littlefair, James F Wild, R P Ashley, E Breedt, V S Dhillon, M J Dyer, M J Green, P Kerry, T R Marsh, I Pelisoli, D I Sahman
With the prevalence of wide-field, time-domain photometric sky surveys, the number of eclipsing white dwarf systems being discovered is increasing dramatically. An efficient method to follow these up will be key to determining any population trends a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a98bb194655e3899409ba5381e2a3168
Autor:
J. F. Wild, Ingrid Pelisoli, Tom Marsh, D. I. Sahman, V. S. Dhillon, P. Kerry, M. J. Green, Steven G. Parsons, A. J. Brown, Martin Dyer, S. P. Littlefair, Elmé Breedt
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters.
We present optical photometry of the cataclysmic variable LAMOST J024048.51+195226.9 taken with the high-speed, five-band CCD camera HiPERCAM on the 10.4 m Gran Telescopio Canarias (GTC). We detect pulsations originating from the spin of its white dw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::129e8cce2b9e409e33eeca1d81ef958a
https://doi.org/10.1093/mnrasl/slab116
https://doi.org/10.1093/mnrasl/slab116
Autor:
Martin J. Dyer, P. Kerry, A. J. Brown, D. I. Sahman, Naidu Bezawada, T. Gamble, Enric Palle, Tim Morris, Pablo Rodríguez-Gil, T. Muñoz-Darias, Leander Mehrgan, C Miller, D. Ives, Jim M. Wild, Elmé Breedt, T. Shahbaz, J. Casares, Antonio Cabrera-Lavers, S. P. Littlefair, David Lunney, Manuel A. P. Torres, D. Garcia-Alvarez, Ingrid Pelisoli, Cornelis M. Dubbeldam, Richard Ashley, V. S. Dhillon, Martin Black, S D Dixon, Xiaofeng Gao, Steven G. Parsons, Romano L. M. Corradi, J. Stegmeier, Richard Wilson, R D Domínguez, M. J. Green, David Henry, T. R. Marsh, James Osborn, A. de Ugarte Postigo
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2021, Vol.507(1), pp.350-366 [Peer Reviewed Journal]
Digital.CSIC. Repositorio Institucional del CSIC
instname
Digital.CSIC. Repositorio Institucional del CSIC
instname
Full list of authors: Dhillon, V. S.; Bezawada, N.; Black, M.; Dixon, S. D.; Gamble, T.; Gao, X.; Henry, D. M.; Kerry, P.; Littlefair, S. P.; Lunney, D. W.; Marsh, T. R.; Miller, C.; Parsons, S. G.; Ashley, R. P.; Breedt, E.; Brown, A.; Dyer, M. J.;
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42ce69ddb90e8cce3910f64695fb13ea
Autor:
Steven G. Parsons, Martin J. Dyer, A. J. Brown, D. I. Sahman, Vikram S. Dhillon, M. J. Green, Tom Marsh, S. P. Littlefair, Elmé Breedt, Alina G. Istrate, J. J. Hermes
Publikováno v:
Nature Astronomy, 4, 690-696
Nature Astronomy, 4, 7, pp. 690-696
Nature Astronomy, 4, 7, pp. 690-696
White dwarfs are the burnt out cores of Sun-like stars and are the final fate of 97% of all stars in our Galaxy. The internal structure and composition of white dwarfs are hidden by their high gravities, which causes all elements, apart from the ligh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::304456d49821e60b84a66daa071de4e0
http://arxiv.org/abs/2003.07371
http://arxiv.org/abs/2003.07371
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 477:4483-4490
Following our tentative discovery of a faint shell around V1315 Aql reported in Sahman et al. (2015), we undertook deep Halpha imaging and intermediate-resolution spectroscopy of the shell. We find that the shell has its geometric centre located on V
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a759a503a26da257ced975b087d86ae1
https://doi.org/10.1093/mnras/sty950
https://doi.org/10.1093/mnras/sty950
Autor:
Richard Wilson, M. J. McAllister, S. Rattanasoon, Maja Vučković, Puji Irawati, Claudio Caceres, J. Bento, Madelon C. P. Bours, S. P. Littlefair, V. S. Dhillon, Chris M. Copperwheat, J. J. Hermes, Timothy Butterley, L. K. Hardy, P. Kerry, Paul Chote, Richard Ashley, David Kilkenny, Steven G. Parsons, T. R. Marsh, Elmé Breedt, D. I. Sahman
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 460:3873-3887
We present a long-term programme for timing the eclipses of white dwarfs in close binaries to measure apparent and/or real variations in their orbital periods. Our programme includes 67 close binaries, both detached and semi-detached and with M-dwarf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea1b7b3f659511beae34692d7ac049c0
https://doi.org/10.1093/mnras/stw1203
https://doi.org/10.1093/mnras/stw1203
Autor:
Navtej Singh, Thomas Kupfer, Danny Steeghs, N Prasert, Gregg Hallinan, A. Chakpor, Heather Campbell, J. Milburn, Richard Ashley, Chris M. Copperwheat, T. R. Marsh, J. J. Hermes, P. Kerry, S. P. Littlefair, L. K. Hardy, D. I. Sahman, J. van Roestel, Steven G. Parsons, Elmé Breedt, M. J. Green, Steven Bloemen, V. S. Dhillon
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 476, 2, pp. 1663-1679
Monthly Notices of the Royal Astronomical Society, 476, 1663-1679
Monthly Notices of the Royal Astronomical Society, 476, 1663-1679
AM CVn-type systems are ultra-compact, hydrogen-deficient accreting binaries with degenerate or semi-degenerate donors. The evolutionary history of these systems can be explored by constraining the properties of their donor stars. We present high-spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f3cb136443833c434af25839eeff27e
https://hdl.handle.net/2066/191163
https://hdl.handle.net/2066/191163