... Brown dwarfs are failed stars - objects that form like stars, by gravitational collapse within giant molecularclouds, but which have insufficient mass to raise the central temperature above 10 7 K, and which therefore are unable to ignite hydrogran ...
... Brown dwarfs are failed stars - objects that form like stars, by gravitational collapse within giant molecularclouds, but which have insufficient mass to raise the central temperature above 10 7 K, and which therefore are unable to ignite hydrogran ...
... Brown dwarfs are objects that form in the same manner as stars, by gravitational collapse within molecularclouds, but which do not accrete sufficient mass to raise the central temperature above ~2 million Kelvin and ignite hydrogen fusion. ...
... This is the largest study of parameterized UV extinction curves yet published, and it covers a wide range of environments, from dense molecularclouds to the diffuse interstellar medium, with extinctions AV ranging from 0.50 to 4.80. ...
... 1.15 Completed NIC/2 7418 (Imaging of Younf Stellar Object Circumstellar Nebulosity) WF/PC-2 observations have shown that several young stellar object V892-Tau in the nearby Taurus molecularcloud is seen only indirectly via scattered light. ...
... Molecular oxygen in the №Б Ophiuchi cloud . 155 . 2007ApJ...658L..45L . ... Volk, Kevin; Geballe, T. R.; Mehringer, David M. W51 IRS 2: A Massive Jet Emerging from a MolecularCloud into an H II Region ...