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ASTRO: UGC 4305
UGC 4305 - Holmberg II Ursa Major Penryn, California January 2009 FS-128 (ag, St-4) ST-2000XM LRGB 10 minutes subs Part of the M 81 group of galaxies, UGC 4305 is classified as Ibm (irregular, barred, magellanic) and is undergoing almost continuous star burst activity. This galaxy contains a variable (variable both on year and day time-scales) intense x-ray point source and is one of the brightest x-ray sources known. Studies using the Rosat observatory were inconclusive as to the origin of the source, the best fit being either a binary x-ray source or a black hole candidate source. The source is located in the loop of material at the bottom of the image. ( Zezas, et.al.-1999 ). Distance is 11 Mly. |
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ASTRO: UGC 4305
On 11/10/2010 10:37 AM, glen youman wrote:
UGC 4305 - Holmberg II Ursa Major Penryn, California January 2009 FS-128 (ag, St-4) ST-2000XM LRGB 10 minutes subs Part of the M 81 group of galaxies, UGC 4305 is classified as Ibm (irregular, barred, magellanic) and is undergoing almost continuous star burst activity. This galaxy contains a variable (variable both on year and day time-scales) intense x-ray point source and is one of the brightest x-ray sources known. Studies using the Rosat observatory were inconclusive as to the origin of the source, the best fit being either a binary x-ray source or a black hole candidate source. The source is located in the loop of material at the bottom of the image. ( Zezas, et.al.-1999 ). Distance is 11 Mly. I thought that looked familiar. Arp 268. I had it under Holmberg II. Didn't recognize it under the UGC label. Too many galaxy catalogs! I do need to revisit my processing. It was one of the earlier Arp's I processed. I've learned a lot since. It came out way too harsh. Yours is better processed. It is an interesting mash-up of a galaxy. Rick -- Correct domain name is arvig and it is net not com. Prefix is correct. Third character is a zero rather than a capital "Oh". |
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ASTRO: UGC 4305
Great shooting Glen. Of course I know the "Holmberg" galaxy right next to
M81, but I can't remember any other pictures of this one. Stefan "glen youman" schrieb im Newsbeitrag ... UGC 4305 - Holmberg II Ursa Major Penryn, California January 2009 FS-128 (ag, St-4) ST-2000XM LRGB 10 minutes subs Part of the M 81 group of galaxies, UGC 4305 is classified as Ibm (irregular, barred, magellanic) and is undergoing almost continuous star burst activity. This galaxy contains a variable (variable both on year and day time-scales) intense x-ray point source and is one of the brightest x-ray sources known. Studies using the Rosat observatory were inconclusive as to the origin of the source, the best fit being either a binary x-ray source or a black hole candidate source. The source is located in the loop of material at the bottom of the image. ( Zezas, et.al.-1999 ). Distance is 11 Mly. |
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