Stars

Definition

Stars are large balls of plasma, predominantly hydrogen and helium. The birth, evolution and death of stars are of particular research interest. Other important topics include understanding the internal processes, such as fusion, that generate great quantities of radiation and the gravitational interactions between stars.

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Latest Research and Reviews

  • Research |

    The authors present a spectrophotometric and hydrodynamical study of supernova OGLE-2014-SN-073, which had remarkably high inferred ejecta mass and energy, potentially higher than can be explained with canonical core-collapse neutrino-driven explosions.

    • G. Terreran
    • , M. L. Pumo
    • , T.-W. Chen
    • , T. J. Moriya
    • , F. Taddia
    • , L. Dessart
    • , L. Zampieri
    • , S. J. Smartt
    • , S. Benetti
    • , C. Inserra
    • , E. Cappellaro
    • , M. Nicholl
    • , M. Fraser
    • , Ł. Wyrzykowski
    • , A. Udalski
    • , D. A. Howell
    • , C. McCully
    • , S. Valenti
    • , G. Dimitriadis
    • , K. Maguire
    • , M. Sullivan
    • , K. W. Smith
    • , O. Yaron
    • , D. R. Young
    • , J. P. Anderson
    • , M. Della Valle
    • , N. Elias-Rosa
    • , A. Gal-Yam
    • , A. Jerkstrand
    • , E. Kankare
    • , A. Pastorello
    • , J. Sollerman
    • , M. Turatto
    • , Z. Kostrzewa-Rutkowska
    • , S. Kozłowski
    • , P. Mróz
    • , M. Pawlak
    • , P. Pietrukowicz
    • , R. Poleski
    • , D. Skowron
    • , J. Skowron
    • , I. Soszyński
    • , M. K. Szymański
    •  & K. Ulaczyk
  • Research |

    The polarization resulting from electron scattering in a stellar atmosphere has been detected towards the rapidly spinning star Regulus. Deformation of the star from spherical allows this effect to be seen, fulfilling a prediction from around 50 years ago.

    • Daniel V. Cotton
    • , Jeremy Bailey
    • , Ian D. Howarth
    • , Kimberly Bott
    • , Lucyna Kedziora-Chudczer
    • , P. W. Lucas
    •  & J. H. Hough
  • Research |

    A tight correlation between gamma rays and optical emission in nova ASASSN-16ma indicates that the optical light comes from reprocessed emission from shocks in the ejecta, rather than an energy release near the hot white dwarf, as in the standard model.

    • Kwan-Lok Li
    • , Brian D. Metzger
    • , Laura Chomiuk
    • , Indrek Vurm
    • , Jay Strader
    • , Thomas Finzell
    • , Andrei M. Beloborodov
    • , Thomas Nelson
    • , Benjamin J. Shappee
    • , Christopher S. Kochanek
    • , José L. Prieto
    • , Stella Kafka
    • , Thomas W.-S. Holoien
    • , Todd A. Thompson
    • , Paul J. Luckas
    •  & Hiroshi Itoh
  • Research |

    The re-discovery of the binary star system that created the Nova Scorpii AD 1437 stellar outburst shows that it is now a dwarf nova, suggesting that nova systems spend some time as dwarf novae in between larger outbursts.

    • M. M. Shara
    • , K. Iłkiewicz
    • , J. Mikołajewska
    • , A. Pagnotta
    • , M. F. Bode
    • , L. A. Crause
    • , K. Drozd
    • , J. Faherty
    • , I. Fuentes-Morales
    • , J. E. Grindlay
    • , A. F. J. Moffat
    • , M. L. Pretorius
    • , L. Schmidtobreick
    • , F. R. Stephenson
    • , C. Tappert
    •  & D. Zurek
    Nature 548, 558–560
  • Research |

    Brightness changes of the Sun over timescales from minutes to decades, relevant to Earth’s climate and the detection of exoplanets around Sun-like stars, can be fully and precisely explained by the magnetic field and granulation of the Sun’s surface.

    • A. I. Shapiro
    • , S. K. Solanki
    • , N. A. Krivova
    • , R. H. Cameron
    • , K. L. Yeo
    •  & W. K. Schmutz
    Nature Astronomy 1, 612–616

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