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Supercam, As 64-Pixel Heterodyne Imaging Array For The 870 Micron Atmospheric Window, Christopher Groppi, Christopher Walker, Craig Kulesa, Patrick Putz, Dathon Golish, Paul Gensheimer, Abigail Hedden, Shane Bussmann, Sander Weinreb, Thomas Kuiper, Jacob Kooi, Glenn Jones, Joseph Bardin, Hamdi Mani, Arthur Lichtenberger, Gopal Narayanan
Supercam, As 64-Pixel Heterodyne Imaging Array For The 870 Micron Atmospheric Window, Christopher Groppi, Christopher Walker, Craig Kulesa, Patrick Putz, Dathon Golish, Paul Gensheimer, Abigail Hedden, Shane Bussmann, Sander Weinreb, Thomas Kuiper, Jacob Kooi, Glenn Jones, Joseph Bardin, Hamdi Mani, Arthur Lichtenberger, Gopal Narayanan
Gopal Narayanan
We report on the development of SuperCam , a 64 pixel, superheterodyne camera designed for operation in the astrophysically important 870 μm atmospheric window. SuperCam will be used to answer fundamental questions about the physics and chemistry of molecular clouds in the Galaxy and their direct relation to star and planet formation. The advent of such a system will provide an order of magnitude increase in mapping speed over what is now available and revolutionize how observational astronomy is performed in this important wavelength regime. Unlike the situation with bolometric detectors, heterodyne receiver systems are coherent, retaining information about both …
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 …