IC 2497 is a spiral galaxy close to the intergalactic cloud Hanny's Voorwerp. The galaxy is a former quasar, whose light lit up Hanny's Voorwerp, which...
5 KB (377 words) - 05:09, 27 March 2023
adjacent galaxy IC 2497, which is about 650 million light-years away. Star birth is occurring in the region of HsV that faces IC 2497. Radio observations...
20 KB (2,263 words) - 06:26, 14 August 2024
This is a partial list of IC objects, which are astronomical objects included in the Index Catalogue of Nebulae and Clusters of Stars. This two volume...
46 KB (422 words) - 03:36, 10 October 2024
after Arturo Gómez. Hanny's Voorwerp is a quasar ionization echo near IC 2497 in Leo Minor, named after Hanny van Arkel. Helmi stream is a stellar stream...
15 KB (1,812 words) - 20:31, 7 September 2024
website Galaxy Zoo, stated: "We think that in the recent past the galaxy IC 2497 hosted an enormously bright quasar. Because of the vast scale of the galaxy...
20 KB (2,226 words) - 08:55, 12 September 2024
Zoo project. Lying near the 650-million-light-year-distant spiral galaxy IC 2497, it is around the same size as the Milky Way. It contains a 16,000-light-year-wide...
41 KB (3,893 words) - 13:52, 2 September 2024
absence of an ionizing source within the Voorwerp or in the neighboring IC 2497. 19 March 2008: Swift detected GRB 080319B, a burst of gamma rays amongst...
34 KB (4,072 words) - 23:45, 22 July 2024
but had no ionizing AGN nearby. It was concluded that the nearby galaxy IC 2497 hosted an AGN in the past. Today this AGN faded into inactivity. The hard...
31 KB (2,802 words) - 08:02, 20 September 2024
quasar PSO J0309+27 z > 6 Least distant Markarian 231 600 Mly inactive: IC 2497 Largest Large Quasar Group Huge-LQG (U1.27) 73 quasars Fastest Growing...
69 KB (4,727 words) - 22:39, 16 July 2024
many ways this nebula resembles the prototypical `Hanny's Voorwerp' near IC 2497, but its size is 3x smaller." NGC 7727, a similar galaxy, also in Aquarius...
7 KB (776 words) - 08:13, 23 August 2024