by APOD Robot » Thu Sep 09, 2010 4:01 am
Cepheus: Trunk to Bubble
Explanation: Star clusters, glowing nebulae and dark dust clouds
abound in Cepheus, royal constellation of the northern hemisphere. You can follow them in amazing detail across this broad
skyscape, a mosaic of telescopic images spanning about 17 degrees. Beginning at the lower left, the large emission nebula is cataloged as
IC 1396. Hundreds of light-years across and about 3,000 light-years distant, it contains a dark, winding, tendril-shaped feature popularly known as the
Elephant's Trunk. Near the top middle, the bright nebula with an embedded star cluster is
NGC 7380. At the upper right lies NGC 7635 (the
Bubble Nebula) and
star cluster M52. Put your cursor over the picture to see a labeled version of the field. Many of the objects highlighted have a designation from the second version of the
Sharpless catalog (Sh2) and the
Barnard catalog (B) of dark nebulae. Associated with star formation, the sites are telltale markers along
the region's complex of giant
molecular clouds.
[url=http://apod.nasa.gov/apod/ap100909.html][img]http://apod.nasa.gov/apod/calendar/S_100909.jpg[/img] [size=150]Cepheus: Trunk to Bubble[/size][/url]
[b] Explanation: [/b] Star clusters, glowing nebulae and dark dust clouds [url=http://www.astropix.com/HTML/E_SUM_N/CEPHEUSO.HTM]abound in Cepheus[/url], royal constellation of the northern hemisphere. You can follow them in amazing detail across this broad [url=http://blog.deepskycolors.com/nebulas.html]skyscape[/url], a mosaic of telescopic images spanning about 17 degrees. Beginning at the lower left, the large emission nebula is cataloged as [url=http://apod.nasa.gov/apod/ap090819.html]IC 1396[/url]. Hundreds of light-years across and about 3,000 light-years distant, it contains a dark, winding, tendril-shaped feature popularly known as the [url=http://apod.nasa.gov/apod/ap081226.html]Elephant's Trunk[/url]. Near the top middle, the bright nebula with an embedded star cluster is [url=http://seds.org/messier/xtra/ngc/n7380.html]NGC 7380[/url]. At the upper right lies NGC 7635 (the [url=http://apod.nasa.gov/apod/ap100902.html]Bubble Nebula[/url]) and [url=http://apod.nasa.gov/apod/ap091030.html]star cluster M52[/url]. Put your cursor over the picture to see a labeled version of the field. Many of the objects highlighted have a designation from the second version of the [url=http://galaxymap.org/cgi-bin/sharpless.py?s=1]Sharpless catalog[/url] (Sh2) and the [url=http://www.library.gatech.edu/search/digital_collections/barnard/index.html]Barnard catalog[/url] (B) of dark nebulae. Associated with star formation, the sites are telltale markers along [url=http://arxiv.org/abs/0809.4761]the region's complex[/url] of giant [url=http://www.nasa.gov/mission_pages/spitzer/news/spitzer-20090812.html]molecular clouds[/url].
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