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A Study of the Distribution of Star-Forming Regions in Luminous Infrared Galaxies by Means of Hα Imaging Observations
, 2003
"... We performed Hα imaging observations of 22 luminous infrared galaxies to investigate how the distribution of star-forming regions in these galaxies is related to galaxy interactions. Based on correlation diagrams between Hα flux and continuum emission for individual galaxies, a sequence for the dist ..."
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significant contribution from the outer regions (type 3), and extended starbursts with relatively faint nuclei (type 4). These classes of star-forming region were found to be strongly related to global star-forming properties such as star-formation efficiency, farinfrared color, and dust extinction
Received; accepted Submitted to Astrophysical Journal (Letters). – 2 –
, 1998
"... We report high resolution imaging of the ultraluminous infrared galaxy Arp 220 at 1.1, 1.6, and 2.22 µm with NICMOS on the HST. The diffraction-limited images at 0.1–0.2 ′ ′ resolution clearly resolve both nuclei of the merging galaxy system and reveal for the first time a number of luminous star cl ..."
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We report high resolution imaging of the ultraluminous infrared galaxy Arp 220 at 1.1, 1.6, and 2.22 µm with NICMOS on the HST. The diffraction-limited images at 0.1–0.2 ′ ′ resolution clearly resolve both nuclei of the merging galaxy system and reveal for the first time a number of luminous star
� 1998. The American Astronomical Society. All rights reserved. Printed in U.S.A. NICMOS IMAGING OF THE NUCLEI OF ARP 220
, 1998
"... We report high-resolution imaging of the ultraluminous infrared galaxy Arp 220 at 1.1, 1.6, and 2.22 mm with the Near-Infrared Camera and Multiobject Spectrometer on the Hubble Space Telescope. The diffraction-limited images at 0�.1–0�.2 resolution clearly resolve both nuclei of the merging galaxy s ..."
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is bifurcated by a dust lane with the southern component being very reddened. In the western nucleus, the morphology of the 2.2 mm emission is most likely the result of obscuration by an opaque disk embedded in the nuclear star cluster. The morphology of the central starburst cluster in the western nucleus
Submitted for publication in ApJ GRB 070306: a highly extinguished afterglow 1
, 803
"... ABSTRACT – 2 – We report on the highly extinguished afterglow of GRB 070306 and the properties of the host galaxy. An optical afterglow was not detected at the location of the burst, but in near-infrared a doubling in brightness during the first night and later power-law decay in the K band provided ..."
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provided a clear detection of the afterglow. The host galaxy is relatively bright, R ∼ 22.8. An optical low resolution spectrum revealed a largely featureless host galaxy continuum with a single emission line. Higher resolution follow-up spectroscopy shows this emission to be resolved and consisting of two