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News for Norther Colorado and the world

Thursday, October 2, 2014

Astronomy Picture of the Day

At the estimated distance of NGC 7129 (3,000 light-years), this telescopic view spans about 40 light-years.

 

NGC7129 schedler c70 670x551 Astronomy Picture of the Day

Young Suns of NGC 7129 
Image Credit & CopyrightJohannes Schedler (Panther Observatory)

Explanation: Young suns still lie within dusty NGC 7129, some 3,000 light-years away toward the royal constellation Cepheus. While these stars are at a relatively tender age, only a few million years old, it is likely that our own Sun formed in a similar stellar nursery some five billion years ago. Most noticeable in the sharp image are the lovely bluish dust clouds that reflect the youthful starlight. But the compact, deep red crescent shapes are also markers of energetic, young stellar objects. Known as Herbig-Haro objects, their shape and color is characteristic of glowing hydrogen gasshocked by jets streaming away from newborn stars. Paler, extended filaments of redish emission mingling with the bluish clouds are caused by dust grains effectively converting the invisible ultraviolet starlight to visible red light through photoluminesence. Ultimately the natal gas and dust in the region will be dispersed, the stars drifting apart as the loose cluster orbits the center of the Galaxy. At the estimated distance of NGC 7129, this telescopic view spans about 40 light-years.

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