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Full-Text Articles in Physical Sciences and Mathematics
Kinematics Of Protostellar Objects In The Ρ Ophiuchus A Region, Gopal Narayanan, Daniel W. Logan
Kinematics Of Protostellar Objects In The Ρ Ophiuchus A Region, Gopal Narayanan, Daniel W. Logan
Gopal Narayanan
We present the detection of infall, rotation, and outflow kinematic signatures toward both a protostellar source, VLA 1623, and what was initially thought to be a pre-protostellar core, SM 1N, in the ρ Ophiuchus A region. The kinematic signatures of early star formation were detected in the dense molecular gas surrounding the embedded sources using high signal-to-noise ratio millimeter and submillimeter data. Centroid velocity maps made with HCO+ J = 4 → 3 and J = 1 → 0 line emission exhibit the blue bulge signature of infall, which is predicted to be seen when infall motion dominates over rotational …
Entrainment Mechanisms For Outlfows In The L1551 Star-Forming Region, Irena Stijimirovic, Gopal Narayanan, Ronald L. Snell
Entrainment Mechanisms For Outlfows In The L1551 Star-Forming Region, Irena Stijimirovic, Gopal Narayanan, Ronald L. Snell
Gopal Narayanan
We present high sensitivity 12CO and 13CO J = 1 → 0 maps covering the full extent of the parsec-scale L1551 molecular outflow, including the redshifted east-west (EW) flow. We also present 12CO J = 3 → 2 data obtained over a good fraction of the L1551 outflow. We compare the molecular data to wide-field, narrowband optical emission in Hα. While there are multiple outflows in the L1551 cloud, the main outflow is oriented at 50° position angle and appears to be driven by an embedded source(s) in the central IRS 5 region. The J = 3 → 2 data …