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We present moderate(100) and high-resolution (0>2) observations of the CO (2–1) emission at 43 GHz and radio continuum emission at 1.47 GHz from the z 1⁄4 4:7 QSO BRI 1202 0725 and the z 1⁄4 4:4 QSO BRI 1335 0417 using the Very Large Array. The moderate-resolution observations show that in both cases the CO emission is spatially resolved into two components(More)
We report new K-band, radio continuum, and CO (1–0) imaging observations and 850 μm photometric observations of PDS 456, the most luminous QSO in the local universe (z < 0.3). The 0.6′′ resolution K-band image obtained using the Keck telescope shows three compact mK ∼ 16.5 (MK ∼ −21) sources at a projected distance of ∼ 10 kpc to the southwest, and the host(More)
Massive clusters of galaxies have been found that date from as early as 3.9 billion years (3.9 Gyr; z = 1.62) after the Big Bang, containing stars that formed at even earlier epochs. Cosmological simulations using the current cold dark matter model predict that these systems should descend from 'protoclusters'-early overdensities of massive galaxies that(More)
We present a 1.1 mm wavelength imaging survey covering 0.3 deg2 in the COSMOS field. These data, obtained with the AzTEC continuum camera on the James Clerk Maxwell Telescope, were centred on a prominent large-scale structure overdensity which includes a rich X-ray cluster at z ≈ 0.73. A total of 50 mm-galaxy candidates, with a significance ranging from 3.5(More)
It has long been recognized that interactions between galaxies are important in determining their evolution. The distribution of gas--out of which new stars are formed--is strongly affected; in particular, gas may be concentrated near the nucleus, leading to a burst of star formation. Here we present a map of atomic hydrogen (H I) in the nearest interacting(More)
We present models of the 1.4 to 350 GHz spectral index for starburst galaxies as a function of redshift. 350 a1.4 The models include a semianalytic formulation, based on the well-quantified radio–to–far-infrared correlation for low-redshift star-forming galaxies, and an empirical formulation, based on the observed spectrum of the starburst galaxies M82 and(More)
We present ∼ 3 resolution imaging of the z = 4.7 QSO BR1202-0725 at 900 μm from the Submillimeter Array. The two submillimeter continuum components are clearly resolved from each other, and the positions are consistent with previous lower frequency images. In addition, we detect [C II] line emission from the northern component. The ratio of [C II] to(More)
We have observed a 3◦×3◦ area centered on the M81/M82 group of galaxies using the Robert C. Byrd Green Bank Telescope (GBT) in a search for analogs to the High Velocity Clouds (HVCs) of neutral hydrogen found around our galaxy. The velocity range from -605 to -85 km s−1 and 25 to 1970 km s−1 was searched for H i clouds. Over the inner 2◦ × 2◦ the 7σ(More)
We report the detection of CO ( ) emission from the submillimeter-selected hyperluminous galaxy SMM 3 r 2 0239920136. This galaxy is the brightest source detected in the recent Submillimeter Common-User Bolometer Array surveys of the submillimeter sky. The optical counterpart of the submillimeter source has been identified as a narrow-line active galactic(More)
We report the detection of CO ( ) emission from the submillimeter-selected luminous galaxy 3 r 2 SMM J1401110252. The optical counterpart of the submillimeter source has been identified as a merger system with spectral characteristics consistent with a starburst at . The CO emission confirms the optical z 5 2.565 identification of the submillimeter source(More)