Nicholas Scoville

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The Owens Valley mm-Array has been used to map the CO 1–0 emission in the inner 2.5 of the grand design spiral galaxy M51 at 2 − 3 resolution. These new images reveal the molecular spiral arms with unprecedented clarity – the emission in the two major arms (NE and SW) originates from supermassive cloud complexes, Giant Molecular Associations (GMAs), which(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)
We report the detection of CO(2r1) emission from the ultraluminous infrared galaxy (ULIRG) GOODS z p 1.2 J123634.53 621241.3 (also known as the submillimeter galaxy GN 26). These observations represent the first discovery of high-redshift CO emission using the new Combined Array for Research in Millimeter-Wave Astronomy (CARMA). Of all high-redshift ( )(More)
A Connected Dominating Set (CDS) of the graph representing a Wireless Sensor Network can be used as a virtual backbone for routing in the network. Since sensor nodes are constrained by limited on-board batteries, it is desirable to have a small CDS for the network. However, constructing a minimum size CDS has been shown to be a NP-hard problem. In this(More)
We have used previously published observations of the CO emission from the Antennae (NGC 4038/39) to study the detailed properties of the super giant molecular complexes with the goal of understanding the formation of young massive star clusters. Over a mass range from 5× 10 to 9× 10 M⊙, the molecular complexes follow a power-law mass function with a slope(More)
We present new aperture synthesis CO maps of the Antennae (NGC 4038/39) obtained with the Caltech Millimeter Array. These sensitive images show molecular emission associated with the two nuclei and a partial ring of star formation to the west of NGC 4038, as well as revealing the large extent of the extra-nuclear region of star formation (the “overlap(More)
We present high-resolution imaging of the nucleus of NGC 4258 from 1 to 18 km. Our observations reveal that the previously discovered compact source of emission is unresolved even at the near-infrared resolution of FWHM, which corresponds to about 7 pc at the distance of the galaxy. This is conD0A.2 sistent with the source of emission being the region in(More)
Observations of ultraluminous infrared galaxies (ULIRGs) with an achieved resolution approaching the di†raction limit in the mid-infrared from 8 to 25 km using the Keck Telescopes are reported. We Ðnd extremely compact structures, with spatial scales of less than (diameter) in six of the seven 0A.3 ULIRGs observed. These compact sources emit between 30% and(More)
The H ii region luminosity function (LF) is an important tool for deriving the birthrates and mass distribution of OB associations, and is an excellent tracer of the newly formed massive stars and associations. To date, extensive work (predominantly in Hα) has been done from the ground, which is hindered by dust extinction and the severe blending of(More)