 | | | | ING Media Archival Record | | ITEM REFERENCE | 2002 | | PERMANENT LINK | https://astro.ing.iac.es/outreach/?2002 | | EXTACCESS | yes | | TYPE2 | Image archive | | TITLE | Hanny's Voorerp | | KEYWORDS | APOD;Nebulae | | DATE | 2008-06-25 | | ABSTRACT | What is that green thing? A volunteer sky enthusiast surfing through online Galaxy Zoo images has discovered something really strange. The mystery object is unusually green, not of any clear galaxy type, and situated below relatively normal looking spiral galaxy IC 2497. Dutch schoolteacher Hanny van Arkel, discovered the strange green voorwerp (Dutch for object) last year. The Galaxy Zoo project encourages sky enthusiasts to browse through SDSS images and classify galaxy types. Now known popularly as Hannys Voorwerp, subsequent observations have shown that the mysterious green blob has the same distance as neighboring galaxy IC 2497. Research is ongoing, but one leading hypothesis holds that Hannys Voorwerp is a small galaxy that acts like a large reflection nebula, showing the reflected light of a bright quasar event that was visible in the center of IC 2497 about 100,000 years ago. Pictured above, Hannys Voorwerp was imaged recently by the 2.5-meter Isaac Newton Telescope in the Canary Islands by Dan Smith, Peter Herbert and Chris Lintott (Univ. Hertfordshire). Other collaboration members include Matt Jarvis, Kevin Schawinski, and William Keel. | | CREDIT | Galaxy Zoo Project, ING | | TELESCOPE | INT | | INSTRUMENT | WFC | | RELATED URL | https://apod.nasa.gov/apod/ap080625.html | | THUMB_600 | https://www.ing.iac.es/PR/science/hannysvoorwerp_wht.jpg | | FILES | JPG (120K) 798×878 pixels | | TIMESTAMP | 2024-08-31 18:54:05 | | USAGE | For publication or display (electronic or otherwise), all photos, images or videos must be credited: "Photo/image/video courtesy of the Isaac Newton Group of Telescopes, La Palma" unless otherwise noted in the provided credit line. Please contact ING's Public Relations Officer (outreach  ing.iac.es) with all the details of the use. |
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