106 citations · 609 across the 22 of their papers we have counts for
19 papers · 1 filter
Formaldehyde as a Tracer of Extragalactic Molecular Gas I. Para-H_2CO Emission From M 82
S. Mühle, E. R. Seaquist, C. Henkel
Using the IRAM 30-m telescope and the 15-m JCMT, we explore the value of para-formaldehyde (p-H_2CO) as a tracer of density and temperature of the molecular gas in external galaxie…
Gas and Dust in the Taffy Galaxies: Ugc12914/15
Ming Zhu, Yu Gao, E. R. Seaquist +1
We present a comprehensive study of the dust and gas properties in the after-head-on-collision UGC12914/15 galaxy system using multi-transition CO data and SCUBA sub-mm continuum i…
Could the Compact Radio Sources in M82 be Cluster Wind Driven Bubbles?
E. R. Seaquist, M. Stankovic
The compact non-thermal sources in M82 and other starburst galaxies are generally thought to be supernova remnants (SNRs). We consider an alternative hypothesis that most are wind…
A High Resolution Map of 12CO J=6-5 Emission in the Starburst Galaxy M82
E. R. Seaquist, S. W. Lee, G. H. Moriarty-Schieven
We present a map of 12CO J=6-5 emission of the nuclear region of the nearby starburst galaxy M82 at resolution 7" taken with the James Clerk Maxwell Telescope (JCMT). This is the h…
Starburst Models For FIR/sub-mm/mm Line Emission. I. An Expanding Supershell Surrounding A Massive Star Cluster
Lihong Yao, T. A. Bell, S. Viti +2
The effect of a newly born star cluster inside a giant molecular cloud (GMC) is to produce a hot bubble and a thin, dense shell of interstellar gas and dust swept up by the H II ex…
A Molecular Gas Bridge between the Taffy Galaxies
J. Braine, E. Davoust, M. Zhu +3
The Taffy Galaxies system, UGC 12914/5, contains huge amounts of molecular gas in the bridge region between the receding spirals after a direct collision. M$_\od…
Star Formation Across the Taffy Bridge: UGC 12914/15
Yu Gao, Ming Zhu, E. R. Seaquist
We present BIMA two-field mosaic CO(1-0) images of the Taffy galaxies (UGC 12914/15), which show the distinct taffy-like radio continuum emission bridging the two spiral disks. Lar…
CO Molecular Gas in Infrared Luminous Galaxies
Lihong Yao, E. R. Seaquist, Nario Kuno +1
We present the first statistical survey of the properties of the 12CO(1-0) and 12CO(3-2) line emission from the nuclei of a nearly complete subsample of 60 infrared (IR) luminous g…
A Multi-Transistion CO Study of the "Antennae" Galaxies NGC4038/9
Ming Zhu, E. R. Seaquist, Nario Kuno
For the Antennae interacting galaxy pair, we have obtained high quality, fully sampled CO J=1-0, 2-1 and 3-2 maps of the regions surrounding the nuclei and the area of overl…
Discovery of High-Latitude CO in a HI Supershell in NGC 5775
S. -W. Lee, E. R. Seaquist, S. Leon +2
We report the discovery of very high latitude molecular gas in the edge-on spiral galaxy, NGC 5775. Emission from both the J=1-0 and 2-1 lines of 12CO is detected up to 4.8 kpc awa…
Molecular Gas Concentrations Outside the Merging Disks
Yu Gao, J. D. Goldader, E. R. Seaquist +1
We present our preliminary BIMA CO(1-0) images of II~Zw~96 which show huge molecular gas concentrations outside the merging disks. The dominant extra-disk CO concentrations in II~Z…
The state of the molecular gas in a luminous starburst/Seyfert 2 galaxy: NGC 1068 revisited
Padeli. P. Papadopoulos, E. R. Seaquist
We present fully sampled ^{12}\sim 1'\times 1'$ region of NGC 1068. We combine these measurements with an existing interferometric map of…
Extended dust emission and atomic hydrogen, a reservoir of diffuse H_2 in NGC 1068
Padeli P. Papadopoulos, E. R. Seaquist
We report on sensitive sub-mm imaging observations of the prototype Seyfert~2/starburst galaxy NGC 1068 at 850 m and 450 m using the Submillimetre Common-User Bolometer Array…
HCO+ in the Starburst Galaxy M82
E. R. Seaquist, D. T. Frayer, M. B. Bell
We report observations and an analysis of the distribution of HCO+(1-0) and HCO+(4-3) emission in the central 1 kpc star forming region of M82. Comparisons are made with other star…
Molecular Gas in Mrk 109: Constraining the O2/CO Ratio in Chemically Young Galaxies
D. T. Frayer, E. R. Seaquist, T. X. Thuan +1
We report on observations of CO(1-0) emission from the chemically young starburst galaxy Mrk 109. These observations were part of a study to constrain the O2/CO ratio in metal-defi…
OH Satellite Line Masers in the Nucleus of NGC253
D. T. Frayer, E. R. Seaquist, D. A. Frail
We report the detection of 1720 and 1612 MHz OH ground-state satellite line maser regions in the starburst galaxy NGC253. We find ten compact maser features all of which are locate…
OH Satellite Line Masers and an AGN Candidate in M82
E. R. Seaquist, D. T. Frayer, D. A. Frail
We report the detection of OH satellite line masers at 1720 MHz and 1612 MHz from the nuclear region of the starburst galaxy M82. The observations were aimed at detecting 1720 MHz…
A search for symbiotic behaviour amongst OH/IR colour mimics
E. R. Seaquist, R. J. Ivison
Recent maser surveys have shown that many potential OH/IR stars have no OH masers in their circumstellar envelopes, despite the modest requirements which should be implicitly met b…
Discovery of hydroxyl and water masers in R Aquarii and H1-36 Arae
R. J. Ivison, E. R. Seaquist, P. J. Hall
We present the first results from an all-sky maser-line survey of symbiotic Miras. Interferometric spectral-line observations of R Aqr and H1-36 Arae have revealed a 22-GHz water m…