by APOD Robot » Sat May 23, 2015 4:09 am
NGC 7822 in Cepheus
Explanation: Hot, young stars and
cosmic pillars of gas and dust seem to crowd into NGC 7822. At the edge of a giant
molecular cloud toward the northern constellation Cepheus, the glowing star forming region lies about 3,000 light-years away. Within the nebula, bright edges and dark shapes are highlighted in this
colorful skyscape. The image includes data from
narrowband filters, mapping emission from atomic oxygen, hydrogen, and sulfur into blue, green, and red hues. The atomic emission is
powered by energetic radiation from the hot stars, whose powerful winds and radiation also sculpt and erode the denser pillar shapes. Stars could still be forming inside the pillars by
gravitational collapse, but as the pillars are eroded away, any forming stars will ultimately be cutoff from their reservoir of
star stuff. This field spans around 40 light-years at the estimated distance of NGC 7822.
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[url=http://apod.nasa.gov/apod/ap150523.html][img]http://apod.nasa.gov/apod/calendar/S_150523.jpg[/img] [size=150]NGC 7822 in Cepheus[/size][/url]
[b] Explanation: [/b] Hot, young stars and [url=http://www.eso.org/public/news/eso1518/]cosmic pillars[/url] of gas and dust seem to crowd into NGC 7822. At the edge of a giant [url=http://archive.ncsa.illinois.edu/Cyberia/Bima/GMC.html]molecular cloud[/url] toward the northern constellation Cepheus, the glowing star forming region lies about 3,000 light-years away. Within the nebula, bright edges and dark shapes are highlighted in this [url=http://www.cieloprofundo.com/cesar/pagina_gral_banda%20estrecha/paginas_banda%20estrecha/NGC7822.html]colorful skyscape[/url]. The image includes data from [url=http://apod.nasa.gov/apod/ap060324.html]narrowband[/url] filters, mapping emission from atomic oxygen, hydrogen, and sulfur into blue, green, and red hues. The atomic emission is [url=http://apod.nasa.gov/apod/ap051223.html]powered by[/url] energetic radiation from the hot stars, whose powerful winds and radiation also sculpt and erode the denser pillar shapes. Stars could still be forming inside the pillars by [url=http://hyperphysics.phy-astr.gsu.edu/hbase/astro/gravc.html#c1]gravitational collapse[/url], but as the pillars are eroded away, any forming stars will ultimately be cutoff from their reservoir of [url=http://heritage.stsci.edu/2015/01/index.html]star stuff[/url]. This field spans around 40 light-years at the estimated distance of NGC 7822.
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