Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Physical Sciences and Mathematics
Star Formation In Bright Rimmed Clouds. I. Millimeter And Submillimeter Molecular Line Surveys, Christopher H. De Vries, Gopal Narayanan, Ronald L. Snell
Star Formation In Bright Rimmed Clouds. I. Millimeter And Submillimeter Molecular Line Surveys, Christopher H. De Vries, Gopal Narayanan, Ronald L. Snell
Gopal Narayanan
We present the results of the first detailed millimeter and submillimeter molecular line survey of bright-rimmed clouds, observed at FCRAO in the CO (J = 1 ? 0), C18O (J = 1 ? 0), HCO+ (J = 1 ? 0), H13CO+ (J = 1 ? 0), and N2H+ (J = 1 ? 0) transitions, and at the Heinrich Hertz Telescope in the CO (J = 2 ? 1), HCO+ (J = 3 ? 2), HCO+ (J = 4 ? 3), H13CO+ (J = 3 ? 2), and H13CO+ (J = 4 ? 3) molecular line transitions. The source list is …
Detection Of Infall Signatures Towards Serpens Smm4, Gopal Narayanan, G. Moriarty-Schieven, C.K. Walker, H.M. Butner
Detection Of Infall Signatures Towards Serpens Smm4, Gopal Narayanan, G. Moriarty-Schieven, C.K. Walker, H.M. Butner
Gopal Narayanan
We present the detection of kinematic infall signatures toward the Class 0 protostellar system SMM4 in the Serpens cloud core. We have observed the dense molecular gas toward the embedded source using millimeter and submillimeter line transitions of density sensitive molecular tracers. High signal-to-noise ratio maps obtained in HCO+ J = 1 → 0, J = 3 → 2, and J = 4 → 3, and CS J = 2 → 1 show the blue-bulge infall signature. The blue-bulge infall signature can be observed in the centroid velocity maps of protostellar objects when infall dominates over rotation. The line profiles …