Search Publications
Galactic Winds across the Gas-rich Merger Sequence. I. Highly Ionized N V and O VI Outflows in the QUEST Quasars
Maiolino, Roberto; Tripp, Todd M.; Hamann, Fred +12 more
This program is part of QUEST (Quasar/ULIRG Evolutionary Study) and seeks to examine the gaseous environments of z ≲ 0.3 quasars and ULIRGs as a function of host galaxy properties and age across the merger sequence from ULIRGs to quasars. This first paper in the series focuses on 33 quasars from the QUEST sample and on the kinematics of the highly…
ALMA Discovery of a Disk around the Planetary-mass Companion SR 12 c
Kraus, Adam L.; Bowler, Brendan P.; Zhu, Zhaohuan +6 more
We report an Atacama Large Millimeter/submillimeter Array 0.88 mm (Band 7) continuum detection of the accretion disk around SR 12 c, an ~11 M Jup planetary-mass companion (PMC) orbiting its host binary at 980 au. This is the first submillimeter detection of a circumplanetary disk around a wide PMC. The disk has a flux density of 127 ± 1…
Pulsating hydrogen-deficient white dwarfs and pre-white dwarfs observed with TESS. III. Asteroseismology of the DBV star GD 358
Kepler, S. O.; Hermes, J. J.; Kawaler, S. D. +14 more
Context. The collection of high-quality photometric data by space telescopes, such as the completed Kepler mission and the ongoing TESS program, is revolutionizing the area of white-dwarf asteroseismology. Among the different kinds of pulsating white dwarfs, there are those that have He-rich atmospheres, and they are called DBVs or V777 Her variab…
The impostor revealed: SN 2016jbu was a terminal explosion
Lyman, J. D.; Fraser, M.; Elias-Rosa, N. +2 more
In this Letter, we present recent observations from the Hubble Space Telescope of the interacting transient SN 2016jbu at +5 yr. We find no evidence for any additional outburst from SN 2016jbu, and the optical source has now faded significantly below the progenitor magnitudes from early 2016. Similar to recent observations of SN 2009ip and SN 2015…
A new photometric study of M14 (NGC 6402): an interpretation of the horizontal branch and beyond
Arellano Ferro, A.; Muneer, S.; Schröder, K. -P. +3 more
We present a CCD VI photometric study of the globular cluster M14. Particular attention is given to the variable stars. This allowed new classifications and cluster membership considerations. New variables are reported: 3 RRc, 18 SR, and 1 SX Phe. The Fourier decomposition of RR Lyrae light curves lead to the mean cluster metallicity of [Fe/H]
A Population of Dipper Stars from the Transiting Exoplanet Survey Satellite Mission
Kostov, Veselin B.; Powell, Brian P.; Rappaport, Saul A. +12 more
Dipper stars are a classification of young stellar objects that exhibit dimming variability in their light curves, dropping in brightness by 10%-50%, likely induced by occultations due to circumstellar disk material. This variability can be periodic, quasiperiodic, or aperiodic. Dipper stars have been discovered in young stellar associations via g…
An Assessment of the In Situ Growth of the Intracluster Light in the High-redshift Galaxy Cluster SpARCS1049+56
Muzzin, Adam; Yee, H. K. C.; Perlmutter, Saul +11 more
The formation of the stellar mass within galaxy cluster cores is a poorly understood process. It features the complicated physics of cooling flows, active galactic nucleus feedback, star formation, and more. Here we study the growth of the stellar mass in the vicinity of the brightest cluster galaxy (BCG) in a z = 1.7 cluster, SpARCS1049+56. We sy…
Sub-stellar companions of intermediate-mass stars with CoRoT: CoRoT-34b, CoRoT-35b, and CoRoT-36b
Alonso, R.; Bouchy, F.; Deleuil, M. +18 more
Theories of planet formation give contradicting results of how frequent close-in giant planets of intermediate mass stars (IMSs; $1.3\le M_{\star }\le 3.2\, \mathrm{M}_{\odot }$) are. Some theories predict a high rate of IMSs with close-in gas giants, while others predict a very low rate. Thus, determining the frequency of close-in giant planets o…
Whence the Interstellar Magnetic Field Shaping the Heliosphere?
McComas, D. J.; Redfield, Seth; Frisch, P. C. +15 more
Measurements of starlight polarized by aligned interstellar dust grains are used to probe the relation between the orientation of the ambient interstellar magnetic field (ISMF) and the ISMF traced by the ribbons of energetic neutral atoms discovered by the Interstellar Boundary Explorer spacecraft. We utilize polarization data, many acquired speci…
Atmospheric and Fundamental Parameters of Eight Nearby Multiple Stars
Al-Wardat, Mashhoor A.; Abu-Alrob, Enas M.; Hussein, Abdallah M. +4 more
We present the complete set of atmospheric and fundamental parameters, in addition to the masses, for the individual components of eight stellar systems. The list of the systems, whose orbital solutions were published recently, includes seven binaries (HIP 14524, HIP 16025, HIP 46199, HIP 47791, HIP 60444, HIP 61100, HIP 73085) and one triple syst…