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    planetary nebula tagged posts

    Unusual Laser Emission from the Ant Nebula

    May 17, 2018, Categories  Astronomy/Space

    The Ant Nebula, as imaged by the NASA/ESA Hubble Space Telescope, resembles the head and body of a garden ant. In reality, it's the result of a dying sun-like star and complex interactions of material at its heart. Credit: NASA, ESA and the Hubble Heritage Team (STScI/AURA)

    The Ant Nebula, as imaged by the NASA/ESA Hubble Space Telescope, resembles the head and body of a garden ant. In reality, it’s the result of a dying sun-like star and complex interactions of material at its heart. Credit: NASA, ESA and the Hubble Heritage Team (STScI/AURA)

    An international team of astronomers have discovered an unusual laser emission that suggests the presence of a double star system hidden at the heart of the “spectacular” Ant Nebula. The extremely rare phenomenon is connected to the death of a star and was discovered in observations made by European Space Agency’s (ESA) Herschel space observatory.

    When low- to middleweight stars like our Sun approach the end of their lives they eventually become dense, white dwarf stars...

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    What Will Happen when our Sun Dies?

    May 7, 2018, Categories  Astronomy/Space

    Abell 39, the 39th entry in a catalog of large nebulae discovered by George Abell in 1966, is a beautiful example of a planetary nebula. It was chosen for study by George Jacoby (WIYN Observatory), Gary Ferland (University of Kentucky), and Kirk Korista (Western Michigan University) because of its beautiful and rare spherical symmetry. This picture was taken at the WIYN Observatory's 3.5-m (138-inch) telescope at Kitt Peak National Observatory, Tucson, AZ, in 1997 through a blue-green filter that isolates the light emitted by oxygen atoms in the nebula at a wavelength of 500.7 nanometers. The nebula has a diameter of about five light-years, and the thickness of the spherical shell is about a third of a light-year. The nebula itself is roughly 7,000 light-years from Earth in the constellation Hercules. Credit: T.A.Rector (NRAO/AUI/NSF and NOAO/AURA/NSF) and B.A.Wolpa (NOAO/AURA/NSF) WIYN

    Abell 39, the 39th entry in a catalog of large nebulae discovered by George Abell in 1966, is a beautiful example of a planetary nebula. It was chosen for study by George Jacoby (WIYN Observatory), Gary Ferland (University of Kentucky), and Kirk Korista (Western Michigan University) because of its beautiful and rare spherical symmetry. This picture was taken at the WIYN Observatory’s 3.5-m (138-inch) telescope at Kitt Peak National Observatory, Tucson, AZ, in 1997 through a blue-green filter that isolates the light emitted by oxygen atoms in the nebula at a wavelength of 500.7 nanometers. The nebula has a diameter of about five light-years, and the thickness of the spherical shell is about a third of a light-year...

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    W. M. Keck Observatory achieves first light with NIRES

    January 8, 2018, Categories  Astronomy/Space

    The “first-light” image from NIRES is of NGC 7027, a planetary nebula. The NIRES spectrum shows the near-IR spectrum of this nebula dominated by emission lines of hydrogen and helium. The direct image shows NBC 7027 in the K’ filters at 2.2 microns. CREDIT: W. M. KECK OBSERVATORY

    The “first-light” image from NIRES is of NGC 7027, a planetary nebula. The NIRES spectrum shows the near-IR spectrum of this nebula dominated by emission lines of hydrogen and helium. The direct image shows NBC 7027 in the K’ filters at 2.2 microns. CREDIT: W. M. KECK OBSERVATORY

    The “first-light” image from NIRES is of NGC 7027, a planetary nebula. The NIRES spectrum shows the near-IR spectrum of this nebula dominated by emission lines of hydrogen and helium. The direct image shows NBC 7027 in the K’ filters at 2.2 microns. Credit: W. M. Keck Observatory

    Near-Infrared Echellette Spectrometer (NIRES) is expected to be one of the most efficient single-object, near-infrared spectrographs on an 8 to 10-meter telescope, designed to study explosive, deep sky phenomena such as supern...

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    Hubble’s Holiday Nebula “Ornament”

    December 27, 2017, Categories  Astronomy/Space

    https://3c1703fe8d.site.internapcdn.net/newman/gfx/news/2017/4-imagehubblec.jpg

    Hubble captures planetary nebula NGC 6326
    Credit: ESA/Hubble & NASA

    The Hubble Space Telescope captured what looks like a colorful holiday ornament in space. It’s actually an image of NGC 6326, a planetary nebula with glowing wisps of outpouring gas that are lit up by a central star nearing the end of its life.

    When a star ages and the red giant phase of its life comes to an end, it starts to eject layers of gas from its surface leaving behind a hot and compact white dwarf. Sometimes this ejection results in elegantly symmetric patterns of glowing gas, but NGC 6326 is much less structured. It is in the constellation of Ara, the Altar, 11,000 light-years from Earth.

    Planetary nebulae are one of the main ways in which elements heavier than hydrogen and helium are dispersed into space after th...

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