Young Stars in the Rho Ophiuchi Cloud
Dust clouds and embedded newborn stars glow at infrared wavelengths in this tantalizing false-color composition from WISE, the Wide-field Infrared Survey Explorer
The cosmic canvas features one of the closest star forming regions, part of the Rho Ophiuchi cloud complex
some 400 light-years distant near the southern edge of the pronounceable constellation Ophiuchus
After forming along a large cloud of cold molecular hydrogen gas, young stars heat the surrounding dust to produce the infrared glow. Stars in the process of formation, called young stellar objects or YSOs
, are embedded in the compact pinkish nebulae seen here, but are otherwise hidden from the prying eyes of optical telescopes.
An exploration of the region in penetrating infrared light has detected emerging and newly formed stars whose average age is estimated to be a mere 300,000 years
. That's extremely young compared to the Sun's age of 5 billion years.
The prominent reddish nebula at the lower right surrounding the star Sigma Scorpii
is a reflection nebula produced by dust scattering starlight. This view from WISE spans almost 2 degrees and covers about 14 light-years
at the estimated distance of the Rho Ophiuchi cloud.
► Image and explanation via APoD>>http://apod.nasa.gov/apod/ap110414.html
► Credit: NASA, JPL-Caltech, WISE TeamFurther reading
► What is Infrared?>> http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ir_tutorial/what_is_ir.html
► WISE>> http://wise.ssl.berkeley.edu/index.html
► Rho Ophiuchi>> http://wise.ssl.berkeley.edu/gallery_rho_ophiuchi.html
► Young stellar object>> https://en.wikipedia.org/wiki/Young_stellar_object#Universe