Exploració per autor "Gänsicke, Boris T."

Ara es mostren els items 1-20 de 29

    • 8.9 hr rotation in the partly burnt runaway stellar remnant LP 40-365 (GD 492) 

      Hermes, J. J.; Putterman, Odelia; Hollands, M.; Wilson, David J.; Swan, Andrew; Raddi, Roberto; Shen, Ken J.; Gänsicke, Boris T. (2021-06-07)
      Article
      Accés obert
      We report the detection of 8.914 hr variability in both optical and ultraviolet light curves of LP 40-365 (also known as GD 492), the prototype for a class of partly burnt runaway stars that have been ejected from a binary ...

    • A population synthesis study of the MS+WD population in the SDSS 

      García-Berro Montilla, Enrique; Torres Gil, Santiago; Camacho Díaz, Judit; Rebassa Mansergas, Alberto; Gänsicke, Boris T.; Schreiber, Mathias R.; Zorotovic, Mónica (Astronomical Society of the Pacific Conference Series (ASP), 2015-06-01)
      Article
      Accés obert
      Detached white dwarf + main sequence (WD+MS) systems represent the simplest population of post-common envelope binaries (PCEBs), and their ensemble properties carry important information about common-envelope phase. However, ...

    • A population synthesis study of the MS+WD population in the SDSS 

      García-Berro Montilla, Enrique; Torres Gil, Santiago; Camacho Díaz, Judit; Rebassa Mansergas, Alberto; Gänsicke, Boris T.; Schreiber, Mathias R.; Zorotovic, Mónica (2014)
      Comunicació de congrés
      Accés restringit per política de l'editorial

    • An irradiated-Jupiter analogue hotter than the Sun 

      Hallakoun, Na'ama; Maoz, Dan; Istrate, Alina G.; Badenes, Carles; Breedt, Elmé; Gänsicke, Boris T.; Jha, Saurabh; Leibundgut, Bruno; Mannucci, Filippo; Marsh, Thomas R.; Nelemans, Gijs; Patat, Ferdinando; Rebassa Mansergas, Alberto (Springer Nature, 2023-09-14)
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      Planets orbiting close to hot stars experience intense extreme-ultraviolet radiation, potentially leading to atmosphere evaporation and to thermal dissociation of molecules. However, this extreme regime remains mainly ...

    • Discovery of the first resolved triple white dwarf 

      Perpinyà Vallès, M.; Rebassa Mansergas, Alberto; Gänsicke, Boris T.; Toonen, S.; Hermes, J. J.; Gentile Fusillo, N. P.; Tremblay, P. E. (Oxford University Press, 2019-02-01)
      Article
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      We report the discovery of J1953-1019, the first resolved triple white dwarf system. The triplet consists of an inner white dwarf binary and a wider companion. Using Gaia DR2 photometry and astrometry combined with our ...

    • Gaia white dwarfs within 40 pc – I. Spectroscopic observations of new candidates 

      Tremblay, P. E.; Hollands, M.; Izquierdo Tugas, Pere; Gänsicke, Boris T.; Koester, D.; Brown, W J; Hermes, J. J.; Kleinman, Scot J.; Manser, C. J.; Marsh, Thomas R.; Schreiber, Mathias R.; Silvotti, R.; Rebassa Mansergas, Alberto; Raddi, Roberto (Oxford University Press, 2020-09-01)
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      Accés obert
      Realitzat a/amb:   University of Warwick / Universidad de La Laguna / Universitat Christian Albrecht de Kiel
      We present a spectroscopic survey of 230 white dwarf candidates within 40 pc of the Sun from the William Herschel Telescope and Gran Telescopio Canarias. All candidates were selected from Gaia Data Release 2 (DR2) and in ...

    • IGAPS: the merged IPHAS and UVEX optical surveys of the northern Galactic plane 

      Monguió Montells, Maria; Greimel, Robert; Drew, Janet E.; Barentsen, Geert; Gänsicke, Boris T.; Hollands, M.; Manser, C. J.; Rodríguez Gil, Pablo; Scaringi, Simone; Verbeek, Kevin; Wright, Nicholas; Eislöffel, Jochen; Sabin, Laurence; Vink, J; Raddi, Roberto (EDP Sciences, 2020-06)
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      The INT Galactic Plane Survey (IGAPS) is the merger of the optical photometric surveys, IPHAS and UVEX, based on data from the Isaac Newton Telescope (INT) obtained between 2003 and 2018. Here, we present the IGAPS point ...

    • Main-sequence companions to white dwarfs - II. The age-activity-rotation relation from a sample of Gaia common proper motion pairs 

      Rebassa Mansergas, Alberto; Maldonado, Jesús; Raddi, Roberto; Torres Gil, Santiago; Hoskin, Matthew; Cunningham, Tim; Hollands, Mark; Ren, Juanjuan; Gänsicke, Boris T.; Tremblay, P. E.; Camisassa, María Eugenia (Oxford University Press, 2023-10-06)
      Article
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      Magnetic activity and rotation are related to the age of low-mass main-sequence stars. To further constrain these relations, we study a sample of 574 main-sequence stars members of common proper motion pairs with white ...

    • Monte Carlo simulations of post-common-envelope white dwarf + main sequence binaries: The effects of including recombination energy 

      Zorotovic, Monica; García-Berro Montilla, Enrique; Schreiber, Mathias R.; Camacho Díaz, Judit; Torres Gil, Santiago; Rebassa Mansergas, Alberto; Gänsicke, Boris T. (2014-08-20)
      Article
      Accés obert
      Context. Detached white dwarf + main sequence (WD+MS) post-common-envelope binaries (PCEBs) are perhaps the most suitable objects for testing predictions of close-compact binary-star evolution theories, in particular, ...

    • Monte Carlo simulations of post-common-envelope white dwarf plus main sequence binaries: comparison with the SDSS DR7 observed sample 

      Camacho Díaz, Judit; Torres Gil, Santiago; García-Berro Montilla, Enrique; Zorotovic, Monica; Schreiber, Mathias R.; Rebassa Mansergas, Alberto; Nebot Gómez-Moran, Ada; Gänsicke, Boris T. (2014-06-01)
      Article
      Accés obert
      Context. Detached white dwarf + main sequence (WD+MS) systems represent the simplest population of post-common envelope binaries (PCEBs). Since the ensemble properties of this population carries important information about ...

    • Observational constraints on the age-metallicity relation from white dwarf-Main sequence binaries 

      Rebassa Mansergas, Alberto; García-Berro Montilla, Enrique; Torres Gil, Santiago; Anguiano, B.; Manser, C. J.; Gänsicke, Boris T.; Liu, X. (Astronomical Society of the Pacific Conference Series (ASP), 2017)
      Article
      Accés obert
      The age-metallicity relation (AMR) is a fundamental observational property to understand how the Galactic disc formed and evolved chemically in time. However, there is not yet a consensus on the observed properties of the ...

    • SDSS¿J124043.01+671034.68: the partially burned remnant of a low-mass white dwarf that underwent thermonuclear ignition? 

      Gänsicke, Boris T.; Koester, D.; Raddi, Roberto; Toloza, Odette; Kepler, S.O. (Oxford University Press, 2020-08-21)
      Article
      Accés obert
      The white dwarf SDSS¿J124043.01+671034.68 (SDSS¿J1240+6710) was previously found to have an oxygen-dominated atmosphere with significant traces of neon, magnesium, and silicon. A possible origin via a violent late thermal ...

    • Testing the models of CV evolution 

      Pala, A. F.; Ederoclite, A; Gentile Fusillo, N. P.; Vázquez Ramió, H; Raddi, R; Abril, J; Gänsicke, Boris T.; Rebassa Mansergas, Alberto (2017)
      Text en actes de congrés
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      The study of Cataclysmic Variables (CVs) is crucial to test our understanding of binary evolution and its application to many astrophysical phenomena, such as short gamma-ray bursts, X-ray transients and, more important, ...

    • Testing the white dwarf mass-radius relationship with eclipsing binaries 

      Parsons, S. G.; Gänsicke, Boris T.; Marsh, T. R.; Ashley, R. P.; Bours, M. C. P.; Breedt, E.; Burleigh, M. R.; Copperwheat, C. M.; Dhillon, V. S.; Green, M.; Hardy, L. K.; Hermes, J. J.; Irawati, P.; Kerry, P.; Littlefair, S. P.; McAllister, M. J.; Rattanasoon, S.; Rebassa Mansergas, Alberto; Sahman, D. I.; Schreiber, Mathias R. (2017-10-01)
      Article
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      We present high-precision, model-independent, mass and radius measurements for 16 white dwarfs in detached eclipsing binaries and combine these with previously published data to test the theoretical white dwarf mass–radius ...

    • The age-metallicity relation in the solar neighbourhood from a pilot sample of white dwarf-main sequence binaries 

      Rebassa Mansergas, Alberto; Anguiano, B.; García-Berro Montilla, Enrique; Freeman, K. C.; Cojocaru, Elena Ruxandra; Manser, C. J.; Pala, A. F.; Gänsicke, Boris T.; Liu, X. (2016-12-01)
      Article
      Accés obert
      The age–metallicity relation (AMR) is a fundamental observational constraint for understanding how the Galactic disc formed and evolved chemically in time. However, there is not yet an agreement on the observational ...

    • The Compact binary HIgh CAdence Survey (CHiCaS): An overview 

      Pala, A. F.; Ederoclite, A; Gänsicke, Boris T.; Abril, J; Raddi, Roberto; Vázquez Ramió, H; Rebassa Mansergas, Alberto (2020-09-01)
      Article
      Accés obert
      Realitzat a/amb:   European Southern Observatory / University of Warwick / Universidade de São Paulo / European Southern Observatory Chile / Centro de Estudios de Física del Cosmos de Aragón
      Cataclysmic Variables (CVs) are binaries in which a white dwarf accretes from a low-mass companion star. CVs are the best-suited laboratories to test our understanding of the evolution of compact, interacting binaries as ...

    • The orbital period of the recurrent nova V2487 Oph revealed 

      Rodríguez Gil, Pablo; Corral Santana, Jesus M.; Elias Rosa, Nancy; Gänsicke, Boris T.; Hernanz, Margarita; Sala Cladellas, Glòria (Oxford University Press, 2023-10-12)
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      We present the first reliable determination of the orbital period of the recurrent nova V2487 Oph (Nova Oph 1998). We derived a value of 0.753 ± 0.016 d (18.1 ± 0.4 h) from the radial velocity curve of the intense He¿II ...

    • The scatter of the M dwarf mass-radius relationship 

      Parsons, S. G.; Gänsicke, Boris T.; Marsh, T. R.; Rebassa Mansergas, Alberto (Oxford University Press, 2018-11-21)
      Article
      Accés obert
      M dwarfs are prime targets in the hunt for habitable worlds around other stars. This is due to their abundance as well as their small radii and low masses and tempera- tures, which facilitate the detection of temperate, ...

    • The SDSS spectroscopic catalogue of white dwarf-main-sequence binaries: new identifications from DR 9–12 

      Rebassa Mansergas, Alberto; Ren, J. J.; Parsons, S. G.; Gänsicke, Boris T.; Schreiber, Mathias R.; García-Berro Montilla, Enrique; Liu, X.; Koester, D. (2016-06-01)
      Article
      Accés obert
      We present an updated version of the spectroscopic catalogue of white dwarf-main-sequence (WDMS) binaries from the Sloan Digital Sky Survey (SDSS). We identify 938 WDMS binaries within the data releases (DR) 9-12 of SDSS ...

    • The white dwarf binary pathways survey - I. A sample of FGK stars with white dwarf companions 

      Parsons, S. G.; Rebassa Mansergas, Alberto; Schreiber, Mathias R.; Gänsicke, Boris T.; Zorotovic, Mónica; Ren, J. J. (2016-12-01)
      Article
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      The number of spatially unresolved white dwarf plus main-sequence star binaries has increased rapidly in the last decade, jumping from only ~30 in 2003 to over 3000. However, in the majority of known systems the companion ...