72 citations · 343 across the 14 of their papers we have counts for
15 papers
Atmospheric Escape From Three Terrestrial Planets in the L 98-59 System
Emeline F. Fromont, John P. Ahlers, Laura N. R. do Amaral +6
A critically important process affecting the climate evolution and potential habitability of an exoplanet is atmospheric escape, in which high-energy radiation from a star drives t…
The TESS Triple-9 Catalog: 999 uniformly vetted candidate exoplanets
Luca Cacciapuoti, Veselin B. Kostov, Marc Kuchner +20
The Transiting Exoplanet Survey Satellite (TESS) has detected thousands of exoplanet candidates since 2018, most of which have yet to be confirmed. A key step in the confirmation p…
The Habitable Zones of Rapidly Rotating Main Sequence A/F Stars
John P. Ahlers, Emeline F. Fromont, Ravi Kopparappu +2
We investigate how rapid stellar rotation commonly seen in A/F stars can influence planet habitability. Specifically, we model how rapid rotation influences a planet's irradiation…
The effects of stellar gravity darkening on high-resolution transmission spectra
P. Wilson Cauley, John P. Ahlers
High-resolution transmission spectroscopy is a powerful method for probing the extended atmospheres of short-period exoplanets. With the advancement of ultra-stable echelle spectro…
TOI-2109b: An Ultrahot Gas Giant on a 16 hr Orbit
Ian Wong, Avi Shporer, George Zhou +56
We report the discovery of an ultrahot Jupiter with an extremely short orbital period of days (16 hr). The plane…
An Unusual Transmission Spectrum for the Sub-Saturn KELT-11b Suggestive of a Sub-Solar Water Abundance
Knicole D. Colón, Laura Kreidberg, Luis Welbanks +30
We present an optical-to-infrared transmission spectrum of the inflated sub-Saturn KELT-11b measured with the Transiting Exoplanet Survey Satellite (TESS), the Hubble Space Telesco…
KELT-9 b's Asymmetric TESS Transit Caused by Rapid Stellar Rotation and Spin-Orbit Misalignment
John P. Ahlers, Marshall C. Johnson, Keivan G Stassun +19
KELT-9 b is an ultra hot Jupiter transiting a rapidly rotating, oblate early-A-type star in a polar orbit. We model the effect of rapid stellar rotation on KELT-9 b's transit light…
Gravity-Darkening Analysis of Misaligned Hot Jupiter MASCARA-4 b
John P. Ahlers, Ethan Kruse, Knicole D. Colon +17
MASCARA-4 b is a hot Jupiter in a highly-misaligned orbit around a rapidly-rotating A3V star that was observed for 54 days by the Transiting Exoplanet Survey Satellite (\tess). We…
Exploring the atmospheric dynamics of the extreme ultra-hot Jupiter KELT-9b using TESS photometry
Ian Wong, Avi Shporer, Daniel Kitzmann +24
We carry out a phase-curve analysis of the KELT-9 system using photometric observations from NASA's Transiting Exoplanet Survey Satellite (TESS). The measured secondary eclipse dep…
Dealing With -Scuti Variables: Transit Light Curve Analysis of Planets Orbiting Rapidly-Rotating, Seismically Active A/F Stars
John P. Ahlers, Jason W. Barnes, Samuel A. Myers
We measure the bulk system parameters of the seismically active, rapidly-rotating -Scuti KOI-976 and constrain the orbit geometry of its transiting binary companion using a comb…
LASR-Guided Stellar Photometric Variability Subtraction: The Linear Algorithm For Significance Reduction
John P. Ahlers, Jason W. Barnes, Sarah A. Horvath +2
We develop a technique for removing stellar variability in the light curves of -Scuti and similar stars. Our technique, which we name the Linear Algorithm for Significance Reduc…
Gravity-Darkened Seasons: Insolation Around Rapid Rotators
John P. Ahlers
I model the effect of rapid stellar rotation on a planet's insolation. Fast-rotating stars have induced pole-to-equator temperature gradients (known as gravity-darkening) of up to…
Probable Spin-Orbit Aligned Super-Earth Planet Candidate KOI-2138.01
Jason W. Barnes, Johnathon P. Ahlers, Shayne A. Seubert +1
We use rotational gravity darkening in the disk of \emph{Kepler} star KOI-2138 to show that the orbit of transiting planet candidate KOI-2138.01 has a low projected…
Spin-Orbit Misalignment of Two-Planet-System KOI-89 Via Gravity Darkening
John P. Ahlers, Jason W. Barnes, Rory Barnes
We constrain the true spin-orbit alignment of the KOI-89 system by numerically fitting the two \emph{Kepler} photometric lightcurves produced by transiting planets KOI-89.01 and KO…
Spin-Orbit Alignment For 110-Day-Period KOI368.01 From Gravity Darkening
John. P. Ahlers, Shayne A. Seubert, Jason W. Barnes
We fit the \emph{Kepler} photometric light curve of the KOI-368 system using an oblate, gravity-darkened stellar model in order to constrain its spin-orbit alignment. We find that…