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Spectral Classification of Emission-Line Galaxies
A revised method of classification of narrow-line active galaxies and H II region-like galaxies is proposed. It involves the line ratios which take full advantage of the physical distinction betweenExpand
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Galactic Winds
Galactic winds are the primary mechanism by which energy and metals are recycled in galaxies and are deposited into the intergalactic medium. New observations are revealing the ubiquity of thisExpand
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OUTFLOWS IN INFRARED-LUMINOUS STARBURSTS AT z < 0.5. II. ANALYSIS AND DISCUSSION
We have performed an absorption-line survey of outflowing gas in 78 starburst-dominated, infrared-luminous galaxies. This is the largest study of superwinds at z 3. Superwinds are found in almost allExpand
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SPITZER QUASAR AND ULIRG EVOLUTION STUDY (QUEST). IV. COMPARISON OF 1 Jy ULTRALUMINOUS INFRARED GALAXIES WITH PALOMAR-GREEN QUASARS
We report the results from a comprehensive study of 74 ultraluminous infrared galaxies (ULIRGs) and 34 Palomar-Green (PG) quasars within z ~ 0.3 observed with the Spitzer Infrared Spectrograph (IRS).Expand
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Optical Spectroscopy of Luminous Infrared Galaxies II. Analysis of the Nuclear and long-Slit Data
A spectroscopic survey of a sample of 201 luminous IRAS galaxies was caried out using the Palomar 5-meter amd University of Hawaii 2.2-m telescopes.
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Massive molecular outflows and evidence for AGN feedback from CO observations
We study the properties of massive, galactic-scale outflows of molecular gas and investigate their impact on galaxy evolution. We present new IRAMPdBI CO(1-0) observations of local ultra-luminousExpand
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The X-ray counterpart to the gravitational-wave event GW170817
A long-standing paradigm in astrophysics is that collisions—or mergers—of two neutron stars form highly relativistic and collimated outflows (jets) that power γ-ray bursts of short (less than twoExpand
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Optical Spectroscopy of the IRAS 1 Jy Sample of Ultraluminous Infrared Galaxies
This paper discusses the optical spectroscopic properties of the IRAS 1 Jy sample (f60 > 1 Jy) of ultraluminous infrared galaxies (ULIGs: LIR > 1012 L☉; H0 = 75 km s-1 Mpc-1 and q0 = 0). One hundredExpand
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The farthest known supernova: Support for an accelerating universe and a glimpse of the epoch of deceleration
We present photometric observations of an apparent Type Ia supernova (SN Ia) at a redshift of approximately 1.7, the farthest SN observed to date. The supernova, SN 1997, was discovered in a repeatExpand
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SPITZER QUASAR AND ULIRG EVOLUTION STUDY (QUEST). II. THE SPECTRAL ENERGY DISTRIBUTIONS OF PALOMAR-GREEN QUASARS
This is the second paper studying the QSOs in the Spitzer QUEST sample. Previously we presented new PAH measurements and argued that most of the observed far-infrared (FIR) radiation is due toExpand
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