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    galactic winds tagged posts

    Stellar Winds Regulate Growth of Galaxies

    December 8, 2023, Categories  Astronomy/Space

    The scientists were able to identify the morphology of galactic winds. In this figure, magnesium atom emissions have been used to trace galactic winds. The flow of matter occurs along the central axis perpendicular to the galactic disc.
    © Yucheng Guo

    Galactic winds enable the exchange of matter between galaxies and their surroundings. In this way, they limit the growth of galaxies, that is, their star formation rate...

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    Galactic Winds Slow New Star Formation

    May 8, 2017, Categories  Astronomy/Space

    This is an artist's concept of the metric expansion of space, where space (including hypothetical non-observable portions of the universe) is represented at each time by the circular sections. Note on the left the dramatic expansion (not to scale) occurring in the inflationary epoch, and at the center the expansion acceleration. The scheme is decorated with WMAP images on the left and with the representation of stars at the appropriate level of development. Credit: NASA

    This is an artist’s concept of the metric expansion of space, where space (including hypothetical non-observable portions of the universe) is represented at each time by the circular sections. Note on the left the dramatic expansion (not to scale) occurring in the inflationary epoch, and at the center the expansion acceleration. The scheme is decorated with WMAP images on the left and with the representation of stars at the appropriate level of development. Credit: NASA

    Scientists have created computer simulations of events soon after the Big Bang to better understand how stars today are being formed. Researchers have formed the clearest picture yet of massive explosions that controlled the creation of galaxies, including our own, and continue to influence star formation today...

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    Star Birth with a chance of Winds?

    January 28, 2017, Categories  Astronomy/Space

    The lesser-known constellation of Canes Venatici (The Hunting Dogs), is home to a variety of deep-sky objects -- including this beautiful galaxy, known as NGC 4861. Astronomers are still debating on how to classify it. While its physical properties -- such as mass, size and rotational velocity -- indicate it to be a spiral galaxy, its appearance looks more like a comet with its dense, luminous 'head' and dimmer 'tail' trailing off. Features more fitting with a dwarf irregular galaxy. Credit: ESA/Hubble & NASA

    The lesser-known constellation of Canes Venatici (The Hunting Dogs), is home to a variety of deep-sky objects — including this beautiful galaxy, known as NGC 4861. Astronomers are still debating on how to classify it. While its physical properties — such as mass, size and rotational velocity — indicate it to be a spiral galaxy, its appearance looks more like a comet with its dense, luminous ‘head’ and dimmer ‘tail’ trailing off. Features more fitting with a dwarf irregular galaxy. Credit: ESA/Hubble & NASA

    The lesser-known constellation of Canes Venatici (The Hunting Dogs), is home to a variety of deep-sky objects – including this beautiful galaxy, known as NGC 4861. Astronomers are still debating on how to classify it...

    Read More