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syzygy
Master Cartographer


Reged: 10/06/05
Posts: 1530
Loc: Hungary
Double Supernova Remnants DEM L316
      01/15/08 09:58 AM

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thank you Alberto for great overlay! welcome to work!
***

Credit & Copyright: Gemini Observatory, GMOS-South, NSF

Are these two supernova shells related? To help find out, the 8-meter Gemini Telescope located high atop a mountain in Chile was pointed at the unusual, huge, double-lobed cloud dubbed DEM L316. The resulting image, shown above, yields tremendous detail. Inspection of the image as well as data taken by the orbiting Chandra X-Ray Observatory indicate how different the two supernova remnants are. In particular, the smaller shell appears to be the result of Type Ia supernova where a white dwarf exploded, while the larger shell appears to be the result of a Type II supernova where a massive normal star exploded. Since those two stellar types evolve on such different time scales, they likely did not form together and so are likely not physically associated. Considering also that no evidence exists that the shells are colliding, the two shells are now hypothesized to be superposed by chance. DEM L316 lies about 160,000 light years away in the neighboring Large Magellanic Cloud (LMC) galaxy, spans about 140 light-years across, and appears toward the southern constellation of the Swordfish (Dorado). NASA-APOD

more details on Gemini page

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Edited by syzygy (01/15/08 10:02 AM)

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Entire topic
Subject Posted by Posted on
* APOOD - astronomy picture-overlay of the day syzygy 09/03/07 12:53 AM
. * * Re: APOOD - astronomy picture-overlay of the day ChrisHeinz   09/18/08 05:03 PM
. * * Re: APOOD - astronomy picture-overlay of the day syzygy   09/20/08 03:40 AM
. * * Exploring the Ring - Ring Nebula (M57) syzygy   09/18/08 04:30 AM
. * * Star Forming Region NGC 3582 syzygy   04/27/08 11:40 PM
. * * Spiral Galaxy NGC 2841 syzygy   03/31/08 01:21 AM
. * * Different Fur syzygy   02/01/08 09:01 AM
. * * Double Supernova Remnants DEM L316 syzygy   01/15/08 09:58 AM
. * * I'll Have a Blue (Snowball) Christmas with NGC 766 syzygy   12/30/07 03:33 AM
. * * A galaxy and a comet AlbertoConti   01/02/08 02:14 PM
. * * NGC 1531/2: Interacting Galaxies syzygy   12/26/07 06:26 AM
. * * The Race is On, NGC 488 syzygy   12/14/07 08:59 AM
. * * Bend it Like... NGC 134 syzygy   11/15/07 09:18 AM
. * * The Elephant's Trunk in IC 1396 syzygy   10/18/07 10:21 AM
. * * Galaxy NGC 474: Cosmic Blender syzygy   10/08/07 10:04 AM
. * * Under the Milky Way syzygy   10/04/07 09:52 AM
. * * NGC 5315 Planetary nebula syzygy   10/02/07 10:20 AM
. * * NGC 6164: A Bipolar Emission Nebula syzygy   09/14/07 07:31 AM
. * * The Antennae syzygy   09/14/07 06:34 AM
. * * Spiral Galaxy NGC 2403 from Subaru syzygy   09/14/07 06:11 AM
. * * NGC 6888 cosmic bubble and outskirts (2overlays) syzygy   09/14/07 05:52 AM
. * * Re: NGC 6888 cosmic bubble and outskirts (2overlays) Philip_Pugh   10/19/07 12:08 AM
. * * Re: NGC 6888 cosmic bubble and outskirts (2overlays) syzygy   10/19/07 06:28 AM
. * * Horse Head Shaped Reflection Nebula IC 4592 syzygy   09/14/07 04:35 AM
. * * Light from the Heart Nebula syzygy   09/13/07 06:45 AM
. * * Hidden Galaxy IC 342 syzygy   09/13/07 06:26 AM
. * * Reflection Nebulas in Orion syzygy   09/13/07 06:10 AM
. * * IC 4628: The Prawn Nebula syzygy   09/13/07 04:28 AM
. * * Messier 76, "Little Dumbbell Nebula" syzygy   09/13/07 01:41 AM
. * * IC 5070: A Pelican in the Swan syzygy   09/13/07 01:27 AM
. * * IC 5067 in the Pelican Nebula syzygy   10/19/07 06:36 AM
. * * IC 5067 close up syzygy   10/19/07 06:34 AM
. * * NGC 7129 and NGC 7142 syzygy   09/13/07 01:01 AM
. * * NGC 2174: Emission Nebula in Orion syzygy   09/13/07 12:44 AM
. * * IC 2118: The Witch Head Nebula syzygy   09/13/07 12:30 AM
. * * Massive Stars in Open Cluster Pismis 24 syzygy   09/12/07 02:47 AM
. * * NGC 6960: The Witch's Broom Nebula syzygy   09/11/07 03:08 AM
. * * NGC 602 and Beyond syzygy   09/11/07 02:56 AM
. * * Flame Nebula Close-Up syzygy   09/11/07 02:45 AM
. * * Re: APOOD - astronomy picture-overlay of the day Frank4   09/10/07 06:37 PM
. * * Re: APOOD - astronomy picture-overlay of the day syzygy   09/11/07 02:09 AM
. * * Barred Spiral Galaxy NGC 1672 syzygy   09/10/07 08:52 AM
. * * Dust Sculptures in the Rosette Nebula syzygy   09/10/07 08:32 AM
. * * NGC 4449: Close-Up of a Small Galaxy syzygy   09/10/07 08:01 AM
. * * The Lagoon Nebula in Gas, Dust, and Stars syzygy   09/10/07 07:47 AM
. * * Blue Lagoon syzygy   09/14/07 04:20 AM
. * * M81, Bode's Galaxy syzygy   09/10/07 07:05 AM
. * * Bright Galaxy M81 syzygy   09/14/07 04:50 AM
. * * The Orion Belt: Alnitak, Alnilam, Mintaka syzygy   09/09/07 03:37 AM
. * * NGC 7331, The twin of our Milky Way syzygy   09/08/07 05:14 AM
. * * Galaxies in Pegasus syzygy   11/24/07 03:45 AM
. * * NGC 253, Sculptor galaxy (3 overlays) syzygy   09/08/07 04:04 AM
. * * Tentacles of the Tarantula Nebula syzygy   09/03/07 03:52 AM
. * * The Colorful Clouds of Rho Ophiuchi syzygy   09/03/07 12:57 AM


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