Search Publications
Lessons from Hubble and Spitzer: 1D Self-consistent Model Grids for 19 Hot Jupiter Emission Spectra
Fortney, Jonathan J.; Line, Michael R.; Mansfield, Megan +4 more
We present a population-level analysis of the dayside thermal emission spectra of 19 planets observed with Hubble WFC3 and Spitzer IRAC 3.6 and 4.5 µm, spanning equilibrium temperatures 1200–2700 K and 0.7–10.5 Jupiter masses. We use grids of planet-specific 1D, cloud-free, radiative–convective–thermochemical equilibrium models (1D-RCTE) com…
The Link between Nonthermal Velocity and Free Magnetic Energy in Solar Flares
Temmer, Manuela; Veronig, Astrid; Baker, Deborah +5 more
The cause of excess spectral line broadening (nonthermal velocity) is not definitively known, but given its rise before and during flaring, the causal processes hold clues to understanding the triggers for the onset of reconnection and the release of free magnetic energy from the coronal magnetic field. A comparison of data during a 9 hr period fr…
INTEGRAL search for magnetar giant flares from the Virgo Cluster and in nearby galaxies with high star formation rate
Mereghetti, Sandro; Salvaterra, Ruben; Pacholski, Dominik Patryk +1 more
Giant flares from magnetars can reach, for a fraction of a second, luminosities greater than 10
Stripe 82X Data Release 3: Multiwavelength Catalog with New Spectroscopic Redshifts and Black Hole Masses
Kirkpatrick, Allison; Trakhtenbrot, Benny; LaMassa, Stephanie +10 more
We present the third catalog release of the wide-area (31.3 deg2) Stripe 82 X-ray survey. This catalog combines previously published X-ray source properties with multiwavelength counterparts and photometric redshifts, presents 343 new spectroscopic redshifts, and provides black hole masses for 1297 Type 1 active galactic nuclei (AGN). W…
The K2-24 planetary system revisited by CHEOPS
Alonso, R.; Deleuil, M.; Erikson, A. +82 more
The planetary system K2-24 is composed of two transiting low-density Neptunians locked in an almost perfect 2:1 resonance and showing large transit time variations (TTVs), and it is an excellent laboratory to search for signatures of planetary migration. Previous studies performed with K2, Spitzer, and RV data tentatively claimed a significant non…
MASTER OT J030227.28+191754.5: An unprecedentedly energetic dwarf nova outburst
Schramm, Malte; Maehara, Hiroyuki; Nogami, Daisaku +60 more
We present a detailed study of the MASTER OT J030227.28
Astrometric and photometric characterization of η Tel B combining two decades of observations
Milli, J.; Zurlo, A.; Langlois, M. +11 more
Context. η Tel is an 18 Myr system composed of a 2.09 M⊙ A-type star with an M7-M8 brown dwarf companion, η Tel B. The two objects have a projected separation of 4″.2 (~208 au). This system has been targeted by high-contrast imaging campaigns for over 20 yr, facilitating its orbital and photometric characterization. The companion, η Tel…
Lens Mass Estimate in the Galactic Disk Extreme Parallax Microlensing Event Gaia19dke
Reichart, D. E.; Poleski, R.; Gromadzki, M. +78 more
We present the results of our analysis of Gaia19dke, an extraordinary microlensing event in the Cygnus constellation that the Gaia satellite discovered. This event featured a strong microlensing parallax effect, resulting in multiple light curve peaks. We conducted extensive photometric, spectroscopic, and high-resolution imaging follow-up observa…
Ejecta–Circumstellar Medium Interaction in High-density Environment Contribution to Kilonova Emission: Application to GRB 191019A
Liang, En-Wei; Lü, Hou-Jun; Wang, Suo-Ning +4 more
The nearby long-duration GRB 191019A recently detected by Swift lacks an associated supernova and belongs to a host galaxy with little star formation activity, suggesting that the origin of this burst is the result of a merger of two compact objects with dynamical interactions in a high-density medium of an active galactic nucleus. Given the poten…
Database Design for SpExoDisks: A Database and Web Portal for Spectra of Exoplanet-forming Disks
Banzatti, Andrea; Hinkel, Natalie R.; Wheeler, Caleb H.
Data access—or the availability of new and archival data for use by the larger community—is key for scientific advancement. How data is presented, searched, and formatted determines accessibility and it can be difficult to find a solution that fits the needs of a given subdiscipline. We present a generalized roadmap for developing a specialty astr…