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    ALMA tagged posts

    A Surprise Chemical find by ALMA may help Detect and Confirm Protoplanets

    June 28, 2023, Categories  Astronomy/Space

    Credit: ALMA (ESO/NAOJ/NRAO), M. Weiss (NRAO/AUI/NSF)

    Scientists using the Atacama Large Millimeter/submillimeter Array (ALMA) to study the protoplanetary disk around a young star have discovered the most compelling chemical evidence to date of the formation of protoplanets. The discovery will provide astronomers with an alternate method for detecting and characterizing protoplanets when direct observations or imaging are not possible. The results will be published in an upcoming edition of The Astrophysical Journal Letters.

    HD 169142 is a young star located in the constellation Sagittarius that is of significant interest to astronomers due to the presence of its large, dust- and gas-rich circumstellar disk that is viewed nearly face-on...

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    Astronomers witness the Birth of a very Distant Cluster of Galaxies from the Early Universe

    April 4, 2023, Categories  Astronomy/Space

    This image shows several galaxies distributed over a black background. The galaxies have colours that range from blue, orange-red, yellow and white. In the centre of the image is a larger concentration of galaxies. Overlaid on the galaxies in the middle is a blue and semi-transparent region. It has a clumpy form with indistinct contours. There are smaller, dark blue regions around it.
    Using the Atacama Large Millimeter/submillimeter Array (ALMA), of which ESO is a partner, astronomers have discovered a large reservoir of hot gas in the still-forming galaxy cluster around the Spiderweb galaxy — the most distant detection of such hot gas yet. Galaxy clusters are some of the largest objects known in the Universe and this result, published today in Nature, further reveals just how early these structures begin to form.

    Astronomers have discovered a large reservoir of hot gas in the still-forming galaxy cluster around the Spiderweb galaxy — the most distant detection of such hot gas yet. Galaxy clusters are some of the largest objects known in the Universe and this result further reveals just how early these structures begin to form.

    Using the Atacama Large Millimete...

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    ALMA traces History of Water in Planet Formation back to the Interstellar Medium

    March 9, 2023, Categories  Astronomy/Space

    Credit: ALMA (ESO/NAOJ/NRAO), B. Saxton (NRAO/AUI/NSF)

    Scientists studying a nearby protostar have detected the presence of water in its circumstellar disk. The new observations made with the Atacama Large Millimeter/submillimeter Array (ALMA) mark the first detection of water being inherited into a protoplanetary disk without significant changes to its composition. These results further suggest that the water in our Solar System formed billions of years before the Sun. The new observations are published today in Nature.

    V883 Orionis is a protostar located roughly 1,305 light-years from Earth in the constellation Orion...

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    Resurrected Supernova Provides Missing-link

    March 7, 2023, Categories  Astronomy/Space

    An image of the central region of M77 taken by the Hubble space telescope (left). Right panels show the expanded view around SN 2018ivc based on the data taken by ALMA, at ~200 days (upper right) and ~ 1000 days (lower right)
    An image of the central region of M77 taken by the Hubble space telescope (left), in which the position of SN 2018ivc is marked. Right panels show the expanded view around SN 2018ivc based on the data taken by ALMA, at ~200 days (upper right) and ~ 1000 days (lower right), clearly showing that the rebrightening happened at about one year after the SN explosion. Credit: (left) Based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA) and the Canadian Astronomy Data Centre (CADC/NRC/CSA). (right) ALMA (ESO/NAOJ/NRAO), K. Maeda et al.

    Astronomers have discovered a supernova exhibiting un...

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