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Full-Text Articles in Physical Sciences and Mathematics
Swas Observations Of Water In Molecular Outflows, J Franklin, Ronald L. Snell, Mj Kaufman, Gj Melnick, Da Neufeld, Dj Hollenbach, Ea Bergin
Swas Observations Of Water In Molecular Outflows, J Franklin, Ronald L. Snell, Mj Kaufman, Gj Melnick, Da Neufeld, Dj Hollenbach, Ea Bergin
Astronomy Department Faculty Publication Series
We present detections of the ground-state 110→ 101 transition of ortho-H2O at 557 GHz in 18 molecular outflows based on data from the Submillimeter Wave Astronomy Satellite (SWAS). These results are combined with ground-based observations of the J = 1–0 transitions of 12CO and 13CO obtained at the Five College Radio Astronomy Observatory (FCRAO). Data from Infrared Space Observatory (ISO) for a subset of the outflows are also discussed. Assuming that the SWAS water-line emission originates from the same gas traced by CO emission, we find that the outflowing …
The Five College Radio Astronomy Observatory Co Mapping Survey Of The Taurus Molecular Cloud, Gopal Narayanan, Mh Heyer, C Brunt, Pf Goldsmith, Ronald L. Snell, D Li
The Five College Radio Astronomy Observatory Co Mapping Survey Of The Taurus Molecular Cloud, Gopal Narayanan, Mh Heyer, C Brunt, Pf Goldsmith, Ronald L. Snell, D Li
Astronomy Department Faculty Publication Series
The FCRAO Survey of the Taurus molecular cloud observed the 12CO and 13CO J = 1–0 emission from 98 deg2 of this important, nearby, star-forming region. This set of data with 45'' resolution comprises the highest spatial dynamic range image of an individual molecular cloud constructed to date and provides valuable insights to the molecular gas distribution, kinematics, and the star formation process. In this contribution, we describe the observations, calibration, data processing, and characteristics of the noise and line emission of the survey. The angular distribution of 12CO and 13CO emission over 1 km …
Large-Scale Structure Of The Molecular Gas In Taurus Revealed By High Linear Dynamic Range Spectral Line Mapping, Pf Goldsmith, M Heyer, Gopal Narayanan, Ronald L. Snell, D Li, C Brunt
Large-Scale Structure Of The Molecular Gas In Taurus Revealed By High Linear Dynamic Range Spectral Line Mapping, Pf Goldsmith, M Heyer, Gopal Narayanan, Ronald L. Snell, D Li, C Brunt
Astronomy Department Faculty Publication Series
We report the results of a 100 deg2 survey of the Taurus molecular cloud region in 12CO and 13CO J = 1→ 0. The image of the cloud in each velocity channel includes 3 × 106 Nyquist-sampled pixels on a 20'' grid. The high sensitivity and large spatial dynamic range of the maps reveal a very complex, highly structured cloud morphology, including filaments, cavities, and rings. The axes of the striations seen in the 12CO emission from relatively diffuse gas are aligned with the direction of the magnetic field. We have developed a statistical …