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Lonsdale, Carol J.,Lacy, M.,Kimball, A. E.,Blain, A.,Whittle, M.,Wilkes, B.,Stern, D.,Condon, J.,Kim, M.,Assef, R. J.,Tsai, C.-W.,Efstathiou, A.,Jones, S.,Eisenhardt, P.,Bridge, C.,Wu, J.,Lonsdale, Co IOP Publishing 2015 The Astrophysical journal Vol.813 No.1
<P>We present Atacama Large Millimeter/submillimeter Array (ALMA) 870 mu m (345 GHz) data for 49 high-redshift (0.47 < z < 2.85), luminous (11.7 < log(L-bol/L-circle dot) < 14.2) radio-powerful active galactic nuclei (AGNs), obtained to constrain cool dust emission from starbursts concurrent with highly obscured radiative-mode black hole (BH) accretion in massive galaxies that possess a small radio jet. The sample was selected from the Wide-field Infrared Survey Explorer with extremely steep (red) mid-infrared colors and with compact radio emission from NVSS/FIRST. Twenty-six sources are detected at 870 mu m, and we find that the sample has large mid- to far-infrared luminosity ratios, consistent with a dominant and highly obscured quasar. The rest-frame 3 GHz radio powers are 24.7 < log P-3.0 GHz/W Hz(-1)) < 27.3, and all sources are radio-intermediate or radio-loud. BH mass estimates are 7.7 < log(M-BH/M-circle dot) < 10.2. The rest-frame 1-5 mu m spectral energy distributions are very similar to the 'Hot DOGs' (hot dust-obscured galaxies), and steeper (redder) than almost any other known extragalactic sources. ISM masses estimated for the ALMA-detected sources are 9.9 < log (M-ISM/M-circle dot) < 11.75 assuming a dust temperature of 30 K. The cool dust emission is consistent with star formation rates reaching several thousand M-circle dot yr(-1), depending on the assumed dust temperature, but we cannot rule out the alternative that the AGN powers all the emission in some cases. Our best constrained source has radiative transfer solutions with approximately equal contributions from an obscured AGN and a young (10-15 Myr) compact starburst.</P>
Imaging Stars by Performing Full-Stokes Optical Interferometric Polarimetry
Elias, Nicholas M. II,Edel, Stanislav S.,Jones, Carol E.,Mackay, Frances E.,Mozurkewich, David,Jorgensen, Anders M.,Schmitt, Henrique R. The Korean Space Science Society 2012 Journal of Astronomy and Space Sciences Vol.29 No.1
Optical interferometry and polarimetry have separately provided new insights into stellar astronomy, especially in the fields of fundamental parameters and atmospheric models. We present: scientific justifications for "full-Stokes" optical interferometric polarimetry (OIP); updated instrument requirements; preliminary beam combiner designs; polarimeter design; end-to-end OIP data reduction; and realistic reimaged full-Stokes models of Be stars with a suitable number of telescopes plus noise sources. All of this work represents preliminary research to construct an OIP beam combiner.
Imaging Stars by Performing Full-Stokes Optical Interferometric Polarimetry
Nicholas M. Elias II,Stanislav S. Edel,Carol E. Jones,Frances E. Mackay,David Mozurkewich,Anders M. Jorgensen,Henrique R. Schmitt 한국우주과학회 2012 Journal of Astronomy and Space Sciences Vol.29 No.1
Optical interferometry and polarimetry have separately provided new insights into stellar astronomy, especially in thefields of fundamental parameters and atmospheric models. We present: scientific justifications for “full-Stokes” opticalinterferometric polarimetry (OIP); updated instrument requirements; preliminary beam combiner designs; polarimeterdesign; end-to-end OIP data reduction; and realistic reimaged full-Stokes models of Be stars with a suitable number oftelescopes plus noise sources. All of this work represents preliminary research to construct an OIP beam combiner.