Search Publications
Correlation between the Total Gravitating Mass of Groups and Clusters and the Supermassive Black Hole Mass of Brightest Galaxies
Lovisari, Lorenzo; Volonteri, Marta; Bogdán, Ákos +1 more
Supermassive black holes (BHs) residing in the brightest cluster galaxies are over-massive relative to the stellar bulge mass or central stellar velocity dispersion of their host galaxies. As BHs residing at the bottom of the galaxy cluster’s potential well may undergo physical processes that are driven by the large-scale characteristics of the ga…
The MAVERIC Survey: A Red Straggler Binary with an Invisible Companion in the Galactic Globular Cluster M10
Strader, Jay; Bahramian, Arash; Maccarone, Thomas J. +9 more
We present the discovery and characterization of a radio-bright binary in the Galactic globular cluster M10. First identified in deep radio continuum data from the Karl G. Jansky Very Large Array, M10-VLA1 has a flux density of 27 ± 4 µJy at 7.4 GHz and a flat-to-inverted radio spectrum. Chandra imaging shows an X-ray source with L X <…
A Multiwavelength Look at Galactic Massive Star-forming Regions
Binder, Breanna A.; Povich, Matthew S.
We present a multiwavelength study of 28 Galactic massive star-forming H II regions. For 17 of these regions, we present new distance measurements based on Gaia DR2 parallaxes. By fitting a multicomponent dust, blackbody, and power-law continuum model to the 3.6 µm through 10 mm spectral energy distributions, we find that ∼34% of Lyman conti…
Morphology and Kinematics of Filaments in the Serpens and Perseus Molecular Clouds
Mundy, Lee G.; Storm, Shaye; Dhabal, Arnab +2 more
We present H13CO+ (J = 1-0) and HNC (J = 1-0) maps of regions in Serpens South, Serpens Main, and NGC 1333 containing filaments. We also observe the Serpens regions using H13CN (J = 1-0). These dense gas tracer molecular line observations carried out with CARMA have an angular resolution of ∼7″, a spectral resoluti…
Spectroscopic Investigation of a Reionized Galaxy Overdensity at z = 7
Maiolino, R.; Dickinson, M.; Giavalisco, M. +17 more
We present deep spectroscopic follow-up observations of the Bremer Deep Field (BDF), where the two z ∼ 7 bright Lyα emitters (LAE) BDF521 and BDF3299 were previously discovered by Vanzella et al. and where a factor of ∼3-4 overdensity of faint LBGs has been found by Castellano et al. We confirm a new bright Lyα emitter, BDF2195, at the same redshi…
The Profile of the Galactic Halo from Pan-STARRS1 3π RR Lyrae
Rix, Hans-Walter; Chambers, Ken; Magnier, Eugene +11 more
We characterize the spatial density of the Pan-STARRS1 (PS1) sample of Rrab stars to study the properties of the old Galactic stellar halo. This sample, containing 44,403 sources, spans galactocentric radii of 0.55 kpc ≤ R gc ≤ 141 kpc with a distance precision of 3% and thus is able to trace the halo out to larger distances than most p…
Incompressive Energy Transfer in the Earth’s Magnetosheath: Magnetospheric Multiscale Observations
Russell, C. T.; Torbert, R. B.; Matthaeus, W. H. +14 more
Using observational data from the Magnetospheric Multiscale mission in the Earth’s magnetosheath, we estimate the energy cascade rate at three ranges of length scale, employing a single data interval, using different techniques within the framework of incompressible magnetohydrodynamic (MHD) turbulence. At the energy-containing scale, the energy b…
Resolving Quiescent Galaxies at z ≳ 2. I. Search for Gravitationally Lensed Sources and Characterization of Their Structure, Stellar Populations, and Line Emission
Ellis, Richard S.; Belli, Sirio; Newman, Andrew B. +1 more
Quiescent galaxies at z ≳ 2 are compact and have weak or absent emission lines, making it difficult to spatially resolve their kinematics and stellar populations using ground-based spectroscopy. Gravitationally lensed examples provide a promising route forward, but such objects are very rare. We describe a search in the fields of 232 galaxy cluste…
Rings and Gaps in Protoplanetary Disks: Planets or Snowlines?
Williams, Jonathan P.; van der Marel, Nienke; Bruderer, Simon
High-resolution Atacama Large Millimeter/submillimeter Array observations of protoplanetary disks have revealed that many, if not all, primordial disks consist of ring-like dust structures. The origin of these dust rings remains unclear, but a common explanation is the presence of planetary companions that have cleared gaps along their orbit and t…
Transverse Wave Induced Kelvin-Helmholtz Rolls in Spicules
De Pontieu, B.; Schmit, D.; Pereira, T. M. D. +2 more
In addition to their jet-like dynamic behavior, spicules usually exhibit strong transverse speeds, multi-stranded structure, and heating from chromospheric to transition region temperatures. In this work we first analyze Hinode and IRIS observations of spicules and find different behaviors in terms of their Doppler velocity evolution and collectiv…