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Chandra X-ray Observations of the redshift 1.53, radio-loud quasar: 3C 270.1
Belinda J. Wilkes, Dharam V. Lal, D. M. Worrall +14
Chandra X-ray observations of the high redshift (z =1.532) radio-loud quasar 3C270.1 in 2008 February show the nucleus to have a power-law spectrum, Gamma = 1.66 +/- 0.08, typical…
The redshift and nature of AzTEC/COSMOS 1: A starburst galaxy at z=4.6
V. Smolcic, P. Capak, O. Ilbert +36
Based on broad/narrow-band photometry and Keck DEIMOS spectroscopy we report a redshift of z=4.64-0.08+0.06 for AzTEC/COSMOS 1, the brightest sub-mm galaxy in the AzTEC/COSMOS fiel…
An Infrared Nebula Associated with Delta Cephei: Evidence of Mass Loss?
M. Marengo, N. R. Evans, P. Barmby +7
We present the discovery of an infrared nebula around the Cepheid prototype delta Cephei and its hot companion HD 213307. Large scale (~2.1x10^4 AU) nebulosity is detected at 5.8,…
Discovery and Cosmological Implications of SPT-CL J2106-5844, the Most Massive Known Cluster at z > 1
R. J. Foley, K. Andersson, G. Bazin +70
Using the South Pole Telescope (SPT), we have discovered the most massive known galaxy cluster at z > 1, SPT-CL J2106-5844. In addition to producing a strong Sunyaev-Zel'dovich eff…