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- Institute of Astronomy and Astrophysics, Academia SinicaTW1.4k papers
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6 papers · 2 filters
Mid-Infrared Images of Luminous Infrared Galaxies in a Merging Sequence
Chorng-Yuan Hwang, K. Y. Lo, Yu Gao +2
We report mid-infrared observations of several luminous infrared galaxies (LIGs) carried out with the Infrared Space Observatory. Our sample was chosen to represent different phase…
Luminous IR Galaxies in a Merger Sequence: BIMA CO Imaging
Yu Gao, R. A. Gruendl, C. -Y. Hwang +1
In order to trace observationally the conditions in the interstellar medium (ISM) that lead to starbursts, we have used the newly expanded Berkeley-Illinois-Maryland Association (B…
The detection of extragalactic N: Consequences for nitrogen nucleosynthesis and chemical evolution
Yi-nan Chin, Christian Henkel, Norbert Langer +1
Detections of extragalactic N are reported from observations of the rare hydrogen cyanide isotope HCN toward the Large Magellanic Cloud (LMC) and the core of the (pos…
Intrinsic Size and Shape of Sgr A*: 3.6 AU by <1 AU
K. Y. Lo, Z. -Q. Shen, J. -H. Zhao +1
By means of near-simultaneous multi-wavelength VLBA measurements, we determine for the first time the intrinsic size of Sgr A* to be 3.6 AU by <1 AU with the major axis oriented es…
A 5-GHz Southern Hemisphere VLBI Survey of Compact Radio Sources - II
Z. -Q. Shen, T. -S. Wan, J. M. Moran +20
We report the results of a 5-GHz southern-hemisphere snapshot VLBI observation of a sample of blazars. The observations were performed with the Southern Hemisphere VLBI Network plu…
A possible mechanism for the mass ratio limitation in early type galaxies
Yiping Wang, Peter L. Biermann
There is an interesting correlation between the central objects and their host galaxies in recent high resolution HST photometry of early type galaxies and Near-IR images of nearby…