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.

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Latest Research and Reviews

  • Research |

    Four galaxies discovered near quasars at redshifts exceeding 6 have star-formation rates that are high enough to explain the massive elliptical galaxies known to exist at redshifts of about 4.

    • R. Decarli
    • , F. Walter
    • , B. P. Venemans
    • , E. Bañados
    • , F. Bertoldi
    • , C. Carilli
    • , X. Fan
    • , E. P. Farina
    • , C. Mazzucchelli
    • , D. Riechers
    • , H.-W. Rix
    • , M. A. Strauss
    • , R. Wang
    •  & Y. Yang
    Nature 545, 457–461
  • Reviews |

    Planetary nebulae, traditionally seen as an endpoint of single stars, exhibit a variety of morphologies that cannot be explained in a single-star scenario. It is becoming clearer that perhaps even the majority of planetary nebulae result from binary interactions.

    • David Jones
    •  & Henri M. J. Boffin
  • Research |

    Star formation at a rate of more than 15 solar masses a year has been observed inside a massive outflow of gas from a nearby galaxy; this could also be happening inside other galactic outflows.

    • R. Maiolino
    • , H. R. Russell
    • , A. C. Fabian
    • , S. Carniani
    • , R. Gallagher
    • , S. Cazzoli
    • , S. Arribas
    • , F. Belfiore
    • , E. Bellocchi
    • , L. Colina
    • , G. Cresci
    • , W. Ishibashi
    • , A. Marconi
    • , F. Mannucci
    • , E. Oliva
    •  & E. Sturm
    Nature 544, 202–206
  • Research |

    Subarcsecond localization of the repeating fast radio burst FRB 121102 shows that its source is co-located with a faint galaxy with a low-luminosity active galactic nucleus, or a previously unknown type of extragalactic source.

    • S. Chatterjee
    • , C. J. Law
    • , R. S. Wharton
    • , S. Burke-Spolaor
    • , J. W. T. Hessels
    • , G. C. Bower
    • , J. M. Cordes
    • , S. P. Tendulkar
    • , C. G. Bassa
    • , P. Demorest
    • , B. J. Butler
    • , A. Seymour
    • , P. Scholz
    • , M. W. Abruzzo
    • , S. Bogdanov
    • , V. M. Kaspi
    • , A. Keimpema
    • , T. J. W. Lazio
    • , B. Marcote
    • , M. A. McLaughlin
    • , Z. Paragi
    • , S. M. Ransom
    • , M. Rupen
    • , L. G. Spitler
    •  & H. J. van Langevelde
    Nature 541, 58–61

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