Interstellar medium

Definition

Interstellar medium is the space between the stars. The interstellar medium is composed of gas (predominantly hydrogen and helium) and dust. Such interstellar matter makes up approximately 15% of the visible matter in our galaxy.

Latest Research and Reviews

  • Research |

    • Karen J. Meech
    • , Robert Weryk
    • , Marco Micheli
    • , Jan T. Kleyna
    • , Olivier R. Hainaut
    • , Robert Jedicke
    • , Richard J. Wainscoat
    • , Kenneth C. Chambers
    • , Jacqueline V. Keane
    • , Andreea Petric
    • , Larry Denneau
    • , Eugene Magnier
    • , Travis Berger
    • , Mark E. Huber
    • , Heather Flewelling
    • , Chris Waters
    • , Eva Schunova-Lilly
    •  & Serge Chastel
  • Research |

    The relatively unexplored southwestern region of the Large Magellanic Cloud is host to a massive, embedded star-forming complex that rivals the star-forming efficiency of 30 Doradus. Its most luminous object could be a super star cluster in formation.

    • Bram B. Ochsendorf
    • , Hans Zinnecker
    • , Omnarayani Nayak
    • , John Bally
    • , Margaret Meixner
    • , Olivia C. Jones
    • , Remy Indebetouw
    •  & Mubdi Rahman
    Nature Astronomy 1, 784–790
  • Research |

    Chloromethane (CH3Cl) has been observed towards a low-mass protostar and comet 67P, making it the first organohalogen detected in space. The species was previously considered to be a biomarker, but the authors suggest viable alternative abiotic formation routes.

    • Edith C. Fayolle
    • , Karin I. Öberg
    • , Jes K. Jørgensen
    • , Kathrin Altwegg
    • , Hannah Calcutt
    • , Holger S. P. Müller
    • , Martin Rubin
    • , Matthijs H. D. van der Wiel
    • , Per Bjerkeli
    • , Tyler L. Bourke
    • , Audrey Coutens
    • , Ewine F. van Dishoeck
    • , Maria N. Drozdovskaya
    • , Robin T. Garrod
    • , Niels F. W. Ligterink
    • , Magnus V. Persson
    •  & Susanne F. Wampfler
    Nature Astronomy 1, 703–708
  • Research |

    By assessing the ionization fraction of the environment around Tycho’s (type Ia) supernova, the authors have constrained the properties of its progenitor enough to rule out a hot, luminous white dwarf. A double white dwarf binary merger is allowed.

    • T. E. Woods
    • , P. Ghavamian
    • , C. Badenes
    •  & M. Gilfanov
    Nature Astronomy 1, 800–804
  • 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

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