154 citations · 1k across the 20 of their papers we have counts for
20 papers
Spectroscopic Observations of the Galex Nearby Young Star Survey Sample. 1. Nearby Moving Group Candidates
Navya Nagananda, Laura Vican, Ben Zuckerman +3
The GALEX Nearby Young Star Search (GALNYSS) yielded the identification of more than 2000 late-type stars that, based on their ultraviolet and infrared colors and pre-Gaia proper m…
Space Telescope and Optical Reverberation Mapping Project. XII. Broad-Line Region Modeling of NGC 5548
P. R. Williams, A. Pancoast, T. Treu +155
We present geometric and dynamical modeling of the broad line region for the multi-wavelength reverberation mapping campaign focused on NGC 5548 in 2014. The dataset includes photo…
Space Telescope and Optical Reverberation Mapping Project. IX. Velocity-Delay Maps for Broad Emission Lines in NGC 5548
Keith Horne, G. De Rosa, B. M. Peterson +155
We report velocity-delay maps for prominent broad emission lines, Ly_alpha, CIV, HeII and H_beta, in the spectrum of NGC5548. The emission-line responses inhabit the interior of a…
SONS: The JCMT legacy survey of debris discs in the submillimetre
Wayne S. Holland, Brenda C. Matthews, Grant M. Kennedy +32
Debris discs are evidence of the ongoing destructive collisions between planetesimals, and their presence around stars also suggests that planets exist in these systems. In this pa…
Space Telescope and Optical Reverberation Mapping Project. VII. Understanding the UV anomaly in NGC 5548 with X-Ray Spectroscopy
S. Mathur, A. Gupta, K. Page +147
During the Space Telescope and Optical Reverberation Mapping Project (STORM) observations of NGC 5548, the continuum and emission-line variability became de-correlated during the s…
Solar Abundances of Rock Forming Elements, Extreme Oxygen and Hydrogen in a Young Polluted White Dwarf
J. Farihi, D. Koester, B. Zuckerman +5
The Teff = 20,800 K white dwarf WD 1536+520 is shown to have broadly solar abundances of the major rock forming elements O, Mg, Al, Si, Ca, and Fe, together with a strong relative…
Herschel Observations of Dusty Debris Disks
Laura Vican, Adam Schneider, Geoff Bryden +4
We present results from two Herschel observing programs using the Photodetector Array Camera and Spectrometer. During three separate campaigns, we obtained Herschel data for 24 sta…
Circumstellar Debris Disks: Diagnosing the Unseen Perturber
Erika R. Nesvold, Smadar Naoz, Laura Vican +1
The first indication of the presence of a circumstellar debris disk is usually the detection of excess infrared emission from the population of small dust grains orbiting the star.…
Constraining X-ray-Induced Photoevaporation of Protoplanetary Disks Orbiting Low-Mass Stars
Kristina M. Punzi, Joel H. Kastner, David Rodriguez +2
Low-mass, pre-main sequence stars possess intense high-energy radiation fields as a result of their strong stellar magnetic activity. This stellar UV and X-ray radiation may have a…
Warm Ice Giant GJ 3470b. II Revised Planetary and Stellar Parameters from Optical to Near-infrared Transit Photometry
Lauren I. Biddle, Kyle A. Pearson, Ian J. M. Crossfield +19
It is important to explore the diversity of characteristics of low-mass, low-density planets to understand the nature and evolution of this class of planets. We present a homogeneo…
Accretion and OH Photodissociation at a Nearby T Tauri System in the beta Pictoris Moving Group
B. Zuckerman, Laura Vican, David R. Rodriguez
We present spectra of an M-type, binary star system (LDS 5606) that belongs to the nearby ~20 Myr old beta Pictoris moving group. Both stars are very dusty; the dustier member disp…
A Dusty M5 Binary in the beta Pictoris Moving Group
David R. Rodriguez, B. Zuckerman, Jacqueline K. Faherty +1
We report the identification of a new wide separation binary (LDS 5606) in the ~20 Myr-old beta Pic moving group. This M5+M5 pair has a projected separation of 26'', or ~1700 AU at…
The Evolution of Dusty Debris Disks Around Solar Type Stars
Laura Vican, Adam Schneider
We used chromospheric activity to determine the ages of 2,820 field stars.. We searched these stars for excess emission at 22 um with the Wide-Field Infrared Survey Explorer. Such…
Alignment in star-debris disc systems seen by Herschel
J. S. Greaves, G. M. Kennedy, N. Thureau +28
Many nearby main-sequence stars have been searched for debris using the far-infrared Herschel satellite, within the DEBRIS, DUNES and Guaranteed-Time Key Projects. We discuss here…
Young Stars Near Earth: The Octans-Near Association and Castor Moving Group
Ben Zuckerman, Laura Vican, Inseok Song +1
All cataloged stellar moving groups and associations with ages <100 Myr and within 100 pc of Earth have Galactic space motions (UVW) situated in a "good box" with dimensions ~20 km…
The GALEX Nearby Young-Star Survey
David R. Rodriguez, B. Zuckerman, Joel H. Kastner +3
We describe a method that exploits data from the GALEX ultraviolet and WISE and 2MASS infrared source catalogs, combined with proper motions and empirical pre-main sequence isochro…
Resolved Debris Discs Around A Stars in the Herschel DEBRIS Survey
Mark Booth, Grant Kennedy, Bruce Sibthorpe +12
The majority of debris discs discovered so far have only been detected through infrared excess emission above stellar photospheres. While disc properties can be inferred from unres…
Age Determination for 346 Nearby Stars in the Herschel DEBRIS Survey
Laura Vican
DEBRIS is a flux-limited survey of nearby stars (spectral types A-M) for evidence of debris disks with the Herschel Space Observatory. One goal of the survey is to determine disk i…
Rapid Oscillations in Cataclysmic Variables. XVII. 1RXS J070407+262501
J. Patterson, J. R. Thorstensen, H. A. Sheets +10
We present a study of the recently discovered intermediate polar 1RXS J070407+262501, distinctive for its large-amplitude pulsed signal at P = 480 s. Radial velocities indicate an…
Confirmation of 1RXS J165443.5-191620 as an intermediate polar and its orbital and spin periods
S. Scaringi, S. Connolly, J. Patterson +12
Aims: We investigate the physical nature of the X-ray emitting source 1RXS J165443.5-191620 through optical photometry and time-resolved spectroscopy. Methods: Optical photometry i…