ΛCDM Satellites and H I companions—the Arecibo ALFA survey of NGC 2903 (2009)
Irwin, Judith A., Hoffman, G. Lyle, Spekkens, Kristine, Haynes, Martha P., Giovanelli, Riccardo, Linder, Suzanne M., ...
NGC 4438 and its environment at radio wavelengths (2007)
Hota, Ananda, Saikia, DJ, Irwin, Judith A
We present multifrequency radio continuum and H i observations of NGC 4438, the highly disturbed, active galaxy in the Virgo cluster, with the Very Large Array (VLA) and the Giant Metrewave Radio...
NGC4438 and its environment at radio wavelengths (2007)
Hota, Ananda, Saikia, D. J., Irwin, Judith A.
We present multi-frequency, radio-continuum and HI observations of NGC4438, the highly-disturbed, active galaxy in the Virgo cluster, with the VLA and the GMRT. High-resolution observations with the...
NGC 4438 and its environment at radio wavelengths (2007)
Hota, Ananda, Saikia, DJ, Irwin, Judith A
We present multifrequency radio continuum and H i observations of NGC 4438, the highly disturbed, active galaxy in the Virgo cluster, with the Very Large Array (VLA) and the Giant Metrewave Radio...
An XMM-Newton Observation of the Massive Edge-on Sb Galaxy NGC 2613 (2006)
Li, Zhiyuan, Wang, Q. Daniel, Irwin, Judith A., Chaves, Tara
We present an XMM-Newton observation of the massive edge-on Sb galaxy NGC 2613. We discover that this galaxy contains a deeply embedded active nucleus with a 0.3-10 keV luminosity of 3.3x10^40 erg/s...
Discovery of PAHs in the Halo of NGC 5907 (2005)
Irwin, Judith A., Madden, Suzanne C.
We have used sensitive archival data from the Infrared Space Observatory (ISO) to make maps of the edge-on low SFR galaxy, NGC 5907, in 6 different MIR bands: LW2, LW5, LW6, LW7, LW8, and LW10,...
GMRT Observations of NGC 3079 (2003)
Irwin, Judith A., Saikia, D. J.
We present new observations at three frequencies (326 MHz, 615 MHz, and 1281 MHz) of the radio lobe spiral galaxy, NGC 3079, using the Giant Metrewave Radio Telescope. These observations are...
High Latitude Dust and the 617 MHz - 850 \mu m relation in NGC 5775 (2002)
Brar, Rupinder Singh, Irwin, Judith A., Saikia, D. J.
We present continuum observations of the edge-on spiral galaxy NGC 5775 at 617 MHz with the Giant Metrewave Radio Telescope (GMRT) and at 850 \mu m with the Submillimetre Common-User Bolometer Array...
High Latitude HI in NGC 2613: Buoyant Disk-Halo Outflow (2002)
Irwin, Judith A., Chaves, Tara
We combine new VLA D array HI data of NGC 2613 with previous high resolution data to show new disk-halo features in this galaxy. The global HI distribution is modeled in detail using a technique...
Koda, J., Sofue, Y., Kohno, K., Nakanishi, H., Onodera, S., Okumura, S. K., ...
within 24 lines with 80 characters) We present ^12CO (1-0) observations in the central 4.5 kpc (1 arcmin) of the Halpha/Radio lobe galaxy NGC 3079 with the Nobeyama Millimeter Array. The molecular...
GSH 138-01-94, an old supernova remnant in the far outer Galaxy (2001)
The properties of the Galactic HI shell GSH 138-01-94 are derived from data of the Canadian Galactic Plane Survey. The basic parameters of GSH 138-01-94 were determined by fitting the expansion of a...
SCUBA Observations of NGC 1275 (2001)
Irwin, Judith A., Stil, J. M., Bridges, T. J.
Deep SCUBA observations of NGC 1275 at 450 micron and 850 micron along with the application of deconvolution algorithms have permitted us to separate the strong core emission in this galaxy from the...
Sofue, Y., Koda, J., Kohno, K., Okumura, S. K., Honma, M., Kawamura, A., ...
We have performed high-resolution synthesis observations of the 12CO (J=1-0) line emission from the radio lobe edge-on spiral NGC 3079 using a 7-element mm-wave interferometer at Nobeyama, which...
Radio Jet-blown Neutral Hydrogen Supershells in Spiral Galaxies? (2000)
Taking a clue from the pair of HI supershells found in the Scd galaxy NGC 3556 (M 108), we propose a new mechanism for the origin of HI supershells in gas-rich massive galaxies. In this scenario, the...
Galactic Worm 123.4-1.5: A Mushroom-shaped HI Cloud (2000)
Taylor, A. Russ, Mashchenko, Sergey Y., Irwin, Judith A., Basu, Shantanu, Johnstone, Doug
The Dominion Radio Astrophysical Observatory's Synthesis Telescope provides the highest resolution data (1 arcmin and 0.82 km/s) to date of an HI worm candidate. Observed as part of the Canadian...
An Observational Test of Dark Matter as Cold Fractal Clouds (1999)
Irwin, Judith A., Widrow, Lawrence M., English, Jayanne
Using the VLA, we have performed the first observational test of dark matter in the form of cold, primordial fractal clouds, as envisioned by Pfenniger, Combes, & Martinet (1994) and Pfenniger &...
19 Second Light: Shredded Galaxies in Clusters (1999)
C. H. Russell, Orion Upside Down, Ray Berg, Gordon E. Sarty, Richard Huziak, ...
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High Latitude Radio Emission in a Sample of Edge-On Spiral Galaxies (1998)
Irwin, Judith A., English, Jayanne, Sorathia, Barkat
We have mapped 16 edge-on galaxies at 20 cm using the VLA. For 5 galaxies, we could form spectral index, energy and magnetic field maps. We find that all but one galaxy show evidence for non-thermal...
Water maser emission and the parsec-scale jet in NGC 3079 (1997)
Trotter, Adam S., Greenhill, Lincoln J., Moran, James M., Reid, Mark J., Irwin, Judith A., Lo, Kwok-Yung
We have conducted VLBI observations of water maser and radio continuum emission in the nucleus of NGC 3079. The 22 GHz maser emission arises in compact clumps, distributed along an axis that is...
Lee, Siow-Wang, Irwin, Judith A.
The first detailed VLA mapping of the neutral hydrogen distribution in the isolated, edge-on spiral galaxy NGC 3044 is presented. Physical parameters determined for this galaxy are typical for...