Sunday, September 15, 2013

APOD 1.3


The image below, taken in San Antonia de Areco, Argentina, shows cosmic cloud dust over the constellation Corona Australis. The clouds of dust span an estimated 15 light-years and may even be a nebula in the midst of creating a new star. There are certain features within the clouds that denote star formation, one of which is the appearance of Herbig-Haro objects. Herbig-Haro objects can be described as compact nebulae and are the first visible signs of star formation. They are ejected in pairs moving in opposite directions from proto-stars near the conclusion of the star formation. The Herbig-Haro objects can be seen in the image below as two red patches equidistant from the small, yellow curlicue.  The blue color is produced as the clouds of dust particles scatter the shorter wavelengths of the visible starlight.

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