Search Publications
Properties of Submillimeter Galaxies in the CANDELS GOODS-South Field
Barro, Guillermo; Castellano, Marco; Ferguson, Henry C. +29 more
We derive physical properties of 10 submillimeter galaxies located in the CANDELS coverage of the GOODS-S field. The galaxies were first identified as submillimeter sources with the LABOCA bolometer and subsequently targeted for 870 µm continuum observation with ALMA. The high angular resolution of the ALMA imaging allows secure counterparts…
New Clues to the Cause of Extended Main-Sequence Turnoffs in Intermediate-age Star Clusters in the Magellanic Clouds
Goudfrooij, Paul; Puzia, Thomas H.; Correnti, Matteo +3 more
We use the Wide Field Camera 3 on board the Hubble Space Telescope (HST) to obtain deep, high-resolution images of two intermediate-age star clusters in the Large Magellanic Cloud of relatively low mass (≈104 M ⊙) and significantly different core radii, namely NGC 2209 and NGC 2249. For comparison purposes, we also reanalyzed…
Hubble Space Telescope Observations of the Afterglow, Supernova, and Host Galaxy Associated with the Extremely Bright GRB 130427A
Cenko, S. B.; Pian, E.; Kouveliotou, C. +13 more
We present Hubble Space Telescope (HST) observations of the exceptionally bright and luminous Swift gamma-ray burst (GRB), GRB 130427A. At z = 0.34, this burst affords an excellent opportunity to study the supernova (SN) and host galaxy associated with an intrinsically extremely luminous burst (E iso > 1054 erg): more lumi…
An Estimate of the Magnetic Field Strength Associated with a Solar Coronal Mass Ejection from Low Frequency Radio Observations
Ramesh, R.; Kathiravan, C.; Wang, T. J. +2 more
We report ground based, low frequency heliograph (80 MHz), spectral (85-35 MHz), and polarimeter (80 and 40 MHz) observations of drifting, non-thermal radio continuum associated with the "halo" coronal mass ejection that occurred in the solar atmosphere on 2013 March 15. The magnetic field strengths (B) near the radio source were estimated to be B…
Chandra and XMM-Newton Study of the Supernova Remnant Kes 73 Hosting the Magnetar 1E 1841-045
Safi-Harb, Samar; Gotthelf, E. V.; Slane, Patrick O. +1 more
We present a Chandra and XMM-Newton study of the supernova remnant (SNR) Kes 73 hosting the anomalous X-ray pulsar 1E 1841-045. The Chandra image reveals clumpy structures across the remnant with enhanced emission along the western rim. The X-ray emission fills the radio shell and spatially correlates with the infrared image. The global X-ray spec…
The State of the Warm and Cold Gas in the Extreme Starburst at the Core of the Phoenix Galaxy Cluster (SPT-CLJ2344-4243)
McNamara, Brian R.; Wilner, David J.; Veilleux, Sylvain +9 more
We present new optical integral field spectroscopy (Gemini South) and submillimeter spectroscopy (Submillimeter Array) of the central galaxy in the Phoenix cluster (SPT-CLJ2344-4243). This cluster was previously reported to have a massive starburst (~800 M ⊙ yr-1) in the central, brightest cluster galaxy, most likely fueled b…
The Orbital Motion of the Quintuplet Cluster—A Common Origin for the Arches and Quintuplet Clusters?
Ghez, A. M.; Brandner, W.; Lu, J. R. +6 more
We investigate the orbital motion of the Quintuplet cluster near the Galactic center with the aim of constraining formation scenarios of young, massive star clusters in nuclear environments. Three epochs of adaptive optics high-angular resolution imaging with the Keck/NIRC2 and Very Large Telescope/NAOS-CONICA systems were obtained over a time bas…
Understanding Coronal Mass Ejections and Associated Shocks in the Solar Corona by Merging Multiwavelength Observations
Pick, M.; Kerdraon, A.; Démoulin, P. +3 more
Using multiwavelength imaging observations, in EUV, white light and radio, and radio spectral data over a large frequency range, we analyzed the triggering and development of a complex eruptive event. This one includes two components, an eruptive jet and a coronal mass ejection (CME), which interact during more than 30 minutes, and can be consider…
Dust Formation, Evolution, and Obscuration Effects in the Very High-redshift Universe
Staguhn, Johannes; Arendt, Richard G.; Dwek, Eli +3 more
The evolution of dust at redshifts z >~ 9, and consequently the dust properties, differs greatly from that in the local universe. In contrast to the local universe, core collapse supernovae (CCSNe) are the only source of thermally condensed dust. Because of the low initial dust-to-gas mass ratio, grain destruction rates are low, so that CCSNe a…
Oscillations in a Sunspot with Light Bridges
Li, Bo; Huang, Zhenghua; Su, Jiangtao +4 more
The Solar Optical Telescope on board Hinode observed a sunspot (AR 11836) with two light bridges (LBs) on 2013 August 31. We analyzed a two-hour Ca II H emission intensity data set and detected strong five-minute oscillation power on both LBs and in the inner penumbra. The time-distance plot reveals that the five-minute oscillation phase does not …