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The Stellar Mass Structure of Massive Galaxies from z = 0 to z = 2.5: Surface Density Profiles and Half-mass Radii
van Dokkum, Pieter G.; Franx, Marijn; Illingworth, Garth D. +4 more
We present stellar mass surface density profiles of a mass-selected sample of 177 galaxies at 0.5 < z < 2.5, obtained using very deep Hubble Space Telescope optical and near-infrared data over the GOODS-South field, including recent CANDELS data. Accurate stellar mass surface density profiles have been measured for the first time for a compl…
The Black Hole-Bulge Mass Relation of Active Galactic Nuclei in the Extended Chandra Deep Field-South Survey
Schramm, Malte; Silverman, John D.
We present results from a study to determine whether relations—established in the local universe—between the mass of supermassive black holes (SMBHs) and their host galaxies are in place at higher redshifts. We identify a well-constructed sample of 18 X-ray-selected, broad-line active galactic nuclei (AGNs) in the Extended Chandra Deep Field-South…
ALMA Resolves 30 Doradus: Sub-parsec Molecular Cloud Structure near the Closest Super Star Cluster
Lebouteiller, Vianney; Vasyunina, Tatiana; Hughes, Annie +15 more
We present Atacama Large (sub)Millimeter Array observations of 30 Doradus—the highest resolution view of molecular gas in an extragalactic star formation region to date (~0.4 pc × 0.6 pc). The 30Dor-10 cloud north of R136 was mapped in 12CO 2-1, 13CO 2-1, C18O 2-1, 1.3 mm continuum, the H30α recombination line, and…
Widespread and Hidden Active Galactic Nuclei in Star-forming Galaxies at Redshift >0.3
Dickinson, Mark; Kartaltepe, Jeyhan S.; Kocevski, Dale D. +23 more
We characterize the incidence of active galactic nuclei (AGNs) in 0.3 < z < 1 star-forming galaxies by applying multi-wavelength AGN diagnostics (X-ray, optical, mid-infrared, radio) to a sample of galaxies selected at 70 µm from the Far-Infrared Deep Extragalactic Legacy survey (FIDEL). Given the depth of FIDEL, we detect "normal" gal…
Spectral Fingerprints of Earth-like Planets Around FGK Stars
Sasselov, Dimitar; Kaltenegger, Lisa; Rugheimer, Sarah +2 more
We present model atmospheres for an Earth-like planet orbiting the entire grid of main sequence FGK stars with effective temperatures ranging from Teff = 4250K to Teff = 7000K in 250K intervals. We model the remotely detectable spectra of Earth-like planets for clear and cloudy atmospheres at the 1AU equivalent distance from the VIS to IR (0.4 {\m…
SHARDS: An Optical Spectro-photometric Survey of Distant Galaxies
Barro, Guillermo; Pérez-González, Pablo G.; Tresse, Laurence +26 more
We present the Survey for High-z Absorption Red and Dead Sources (SHARDS), an ESO/GTC Large Program carried out using the OSIRIS instrument on the 10.4 m Gran Telescopio Canarias (GTC). SHARDS is an ultra-deep optical spectro-photometric survey of the GOODS-N field covering 130 arcmin2 at wavelengths between 500 and 950 nm with 24 conti…
A Detailed Kinematic Map of Cassiopeia A's Optical Main Shell and Outer High-velocity Ejecta
Milisavljevic, Dan; Fesen, Robert A.
We present three-dimensional (3D) kinematic reconstructions of optically emitting material in the young Galactic supernova remnant Cassiopeia A (Cas A). These Doppler maps have the highest spectral and spatial resolutions of any previous survey of Cas A and represent the most complete catalog of its optically emitting material to date. We confirm …
The Formation of IRIS Diagnostics. III. Near-ultraviolet Spectra and Images
De Pontieu, B.; Leenaarts, J.; Carlsson, M. +2 more
The Mg II h&k lines are the prime chromospheric diagnostics of NASA's Interface Region Imaging Spectrograph (IRIS). In the previous papers of this series, we used a realistic three-dimensional radiative magnetohydrodynamics model to calculate the h&k lines in detail and investigated how their spectral features relate to the underlying atmo…
Nuclear Activity is More Prevalent in Star-forming Galaxies
Berta, S.; Magnelli, B.; Nordon, R. +14 more
We explore the question of whether low and moderate luminosity active galactic nuclei (AGNs) are preferentially found in galaxies that are undergoing a transition from active star formation (SF) to quiescence. This notion has been suggested by studies of the UV-optical colors of AGN hosts, which find them to be common among galaxies in the so-call…
Global Helioseismic Evidence for a Deeply Penetrating Solar Meridional Flow Consisting of Multiple Flow Cells
Roth, M.; Schad, A.; Timmer, J.
We use a novel global helioseismic analysis method to infer the meridional flow in the deep Solar interior. The method is based on the perturbation of eigenfunctions of Solar p modes due to meridional flow. We apply this method to time series obtained from Dopplergrams measured by the Michelson Doppler Imager aboard the Solar and Heliospheric Obse…