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University of Massachusetts Amherst

Astrophysics and Astronomy

1993

Articles 1 - 4 of 4

Full-Text Articles in Physical Sciences and Mathematics

Interaction Between The Supernova Remnant Ctb 80 And The Ambient Interstellar Medium: Hi And Co Observations, Bon-Chul Koo, Min S. Yun, Paul T P Ho, Youngung Lee Nov 1993

Interaction Between The Supernova Remnant Ctb 80 And The Ambient Interstellar Medium: Hi And Co Observations, Bon-Chul Koo, Min S. Yun, Paul T P Ho, Youngung Lee

Min S. Yun

No abstract provided.

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Co Emission In The Radio-Loud Quasar 3c 48, N Z. Scivukke, S Padin, D B. Sanders, B T. Soifer, Min S. Yun Oct 1993

Co Emission In The Radio-Loud Quasar 3c 48, N Z. Scivukke, S Padin, D B. Sanders, B T. Soifer, Min S. Yun

Min S. Yun

We have used the Owens Valley Millimeter Array to conduct a sensitive search for CO (1 - 0) emission in the radio-loud quasar 3C 48. An emission feature is detected (4σ) at the redshift of the narrow optical emission lines (z = 0.3695). The width of this feature is ~250 km s^-1^(FWHM) similar to that expected for a galactic disk, and the integrated CO line flux implies an H_2_ mass of 7 x 10^10^ M_sun_ (assuming the same CO to H_2_ conversion factor found for giant molecular clouds in the Milky Way). This H_2_ mass is ~30 times that for …

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H I Streamers Around M82 - Tidally Disrupted Outer Gas Disk, Min S. Yun, Paul T P Ho, K Y. Lo Jul 1993

H I Streamers Around M82 - Tidally Disrupted Outer Gas Disk, Min S. Yun, Paul T P Ho, K Y. Lo

Min S. Yun

Our new VLA observations of M82 reveals a triangular central concentration of neutral atomic gas and several more than about 10 kpc long tidal streamers originating from M82 itself. The coincidence of the beginning of the tidal streamer with the flaring of the optical disk as well as the smooth continuation of the disk velocity field into the H I streamer strongly suggest the tidal disruption of the disk of M82, contrary to the widely proposed scenario of tidal stripping and gas accretion from its neighbor M81. The velocity characteristics of H I within M82 are that of disk rotation …

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4 Co Outflows And Dense Gas In The Dark Cloud Complex Near Ic5146, Kazuhito Dobashi, Toshikazu Onishi, Takahiro Iwata, Tomoo Nagahama, Nimesh Patel, Ronald L. Snell, Yasuo Fukui Jan 1993

4 Co Outflows And Dense Gas In The Dark Cloud Complex Near Ic5146, Kazuhito Dobashi, Toshikazu Onishi, Takahiro Iwata, Tomoo Nagahama, Nimesh Patel, Ronald L. Snell, Yasuo Fukui

Astronomy Department Faculty Publication Series

No abstract provided.

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