Nora L. Eisner
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View article: HD 35843: A Sun-like Star Hosting a Long-period Sub-Neptune and Inner Super-Earth
HD 35843: A Sun-like Star Hosting a Long-period Sub-Neptune and Inner Super-Earth Open
We report the discovery and confirmation of two planets orbiting the metal-poor Sun-like star HD 35843 (TOI 4189). HD 35843 c is a temperate sub-Neptune transiting planet with an orbital period of 46.96 days that was first identified by Pl…
View article: Panopticon: a deep learning model to detect individual transits in unfiltered light curves
Panopticon: a deep learning model to detect individual transits in unfiltered light curves Open
In the context of large scale photometric surveys, monitoring hundreds of thousands of stars in the search for exoplanets, one of the main bottlenecks remains reliable and rapid identification of exoplanet candidates. As it stands, the det…
View article: Accelerating Long-period Exoplanet Discovery by Combining Deep Learning and Citizen Science
Accelerating Long-period Exoplanet Discovery by Combining Deep Learning and Citizen Science Open
Automated planetary transit detection has become vital to identify and prioritize candidates for expert analysis and verification given the scale of modern telescopic surveys. Current methods for short-period exoplanet detection work effec…
View article: Spatial dynamics of homicide in medieval English cities: the Medieval Murder Map project
Spatial dynamics of homicide in medieval English cities: the Medieval Murder Map project Open
This study examines the spatial patterns of homicide in three 14th-century English cities—London, York, and Oxford—through the Medieval Murder Map project, which visualizes 355 homicide cases derived from coroners’ inquests. Integrating hi…
View article: HD 35843: A Sun-like star hosting a long period sub-Neptune and inner super-Earth
HD 35843: A Sun-like star hosting a long period sub-Neptune and inner super-Earth Open
We report the discovery and confirmation of two planets orbiting the metal-poor Sun-like star, HD 35843 (TOI 4189). HD 35843 c is a temperate sub-Neptune transiting planet with an orbital period of 46.96 days that was first identified by P…
View article: Planet formation and long-term stability in a very eccentric stellar binary
Planet formation and long-term stability in a very eccentric stellar binary Open
Planets orbiting one of the two stars in a binary are vulnerable to gravitational perturbations from the other star. Particularly, highly eccentric companion stars risk disrupting planetary orbits, such as in the extreme system TOI 4633 wh…
View article: Planet formation and long-term stability in a very eccentric stellar binary
Planet formation and long-term stability in a very eccentric stellar binary Open
Planets orbiting one of the two stars in a binary are vulnerable to gravitational perturbations from the other star. Particularly, highly eccentric companion stars risk disrupting planetary orbits, such as in the extreme system TOI 4633 wh…
View article: Precise Masses Reveal that TOI-700 c is Low Density and TOI-700 d is Rocky
Precise Masses Reveal that TOI-700 c is Low Density and TOI-700 d is Rocky Open
The search for life in the Universe has a significant focus on M dwarf stars, as they are the most common stellar type, and their small sizes and low masses make it easier to detect and characterize small, temperate planets. However, M dwa…
View article: HD 21520 b: a warm sub-Neptune transiting a bright G dwarf
HD 21520 b: a warm sub-Neptune transiting a bright G dwarf Open
We report the discovery and validation of HD 21520 b, a transiting planet found with Transiting Exoplanet Survey Satellite and orbiting a bright G dwarf (V = 9.2, $T_{\rm eff} = 5871 \pm 62$ K, $R_{\star } = 1.04\pm 0.02\, {\rm R}_{\odot }…
View article: Obliquities of exoplanet host stars
Obliquities of exoplanet host stars Open
Measurements of the obliquities in exoplanet systems have revealed some remarkable architectures, some of which are very different from the Solar System. Nearly 200 obliquity measurements have been obtained through observations of the Ross…
View article: Obliquities of Exoplanet Host Stars: 19 New and Updated Measurements, and Trends in the Sample of 205 Measurements
Obliquities of Exoplanet Host Stars: 19 New and Updated Measurements, and Trends in the Sample of 205 Measurements Open
Measurements of the obliquities in exoplanet systems have revealed some remarkable architectures, some of which are very different from the Solar System. Nearly 200 obliquity measurements have been obtained through observations of the Ross…
View article: NotPlaNET: Removing False Positives from Planet Hunters TESS with Machine Learning
NotPlaNET: Removing False Positives from Planet Hunters TESS with Machine Learning Open
Differentiating between real transit events and false-positive signals in photometric time-series data is a bottleneck in the identification of transiting exoplanets, particularly long-period planets. This differentiation typically require…
View article: HD152843 b & c: the masses and orbital periods of a sub-Neptune and a superpuff Neptune
HD152843 b & c: the masses and orbital periods of a sub-Neptune and a superpuff Neptune Open
We present the characterization of the two transiting planets around HD 152843 (TOI 2319, TIC 349488688) using an intensive campaign of HARPS-N radial velocities, and two sectors of TESS data. These data reveal a unique and fascinating sys…
View article: HD 21520 b: a warm sub-Neptune transiting a bright G dwarf
HD 21520 b: a warm sub-Neptune transiting a bright G dwarf Open
We report the discovery and validation of HD 21520 b, a transiting planet found with TESS and orbiting a bright G dwarf (V=9.2, $T_{eff} = 5871 \pm 62$ K, $R_{\star} = 1.04\pm 0.02\, R_{\odot}$). HD 21520 b was originally alerted as a syst…
View article: NotPlaNET: Removing False Positives from Planet Hunters TESS with Machine Learning
NotPlaNET: Removing False Positives from Planet Hunters TESS with Machine Learning Open
Differentiating between real transit events and false positive signals in photometric time series data is a bottleneck in the identification of transiting exoplanets, particularly long-period planets. This differentiation typically require…
View article: Planet Hunters TESS. V. A Planetary System Around a Binary Star, Including a Mini-Neptune in the Habitable Zone
Planet Hunters TESS. V. A Planetary System Around a Binary Star, Including a Mini-Neptune in the Habitable Zone Open
We report on the discovery and validation of a transiting long-period mini-Neptune orbiting a bright ( V = 9.0 mag) G dwarf (TOI 4633; R = 1.05 R ⊙ , M = 1.10 M ⊙ ). The planet was identified in data from the Transiting Exoplanet Survey Sa…
View article: Planet Hunters NGTS: New Planet Candidates from a Citizen Science Search of the Next Generation Transit Survey Public Data
Planet Hunters NGTS: New Planet Candidates from a Citizen Science Search of the Next Generation Transit Survey Public Data Open
We present the results from the first two years of the Planet Hunters Next Generation Transit Survey (NGTS) citizen science project, which searches for transiting planet candidates in data from the NGTS by enlisting the help of members of …
View article: Seven new triply eclipsing triple star systems
Seven new triply eclipsing triple star systems Open
We have identified nearly a hundred close triply eclipsing hierarchical triple star systems from data taken with the space telescope TESS. These systems are noteworthy in that we can potentially determine their dynamical and astrophysical …
View article: Seven new triply eclipsing triple star systems
Seven new triply eclipsing triple star systems Open
Aims. We have identified nearly a hundred close triply eclipsing hierarchical triple star systems from data taken with the space telescope TESS. These systems are noteworthy in that we can potentially determine their dynamical and astrophy…
View article: The TESS-Keck Survey XXI: 13 New Planets and Homogeneous Properties for 21 Subgiant Systems
The TESS-Keck Survey XXI: 13 New Planets and Homogeneous Properties for 21 Subgiant Systems Open
We present a dedicated transit and radial velocity survey of planets orbiting subgiant stars observed by the TESS Mission. Using $\sim$$16$ nights on Keck/HIRES, we confirm and characterize $12$ new transiting planets -- $\rm TOI-329\,b$, …
View article: TOI-5126: A hot super-Neptune and warm Neptune pair discovered by $\textit{TESS}$ and $\textit{CHEOPS}$
TOI-5126: A hot super-Neptune and warm Neptune pair discovered by $\textit{TESS}$ and $\textit{CHEOPS}$ Open
We present the confirmation of a hot super-Neptune with an exterior Neptune companion orbiting a bright (V = 10.1 mag) F-dwarf identified by the $\textit{Transiting Exoplanet Survey Satellite}$ ($\textit{TESS}$). The two planets, observed …
View article: TOI-5126: a hot super-Neptune and warm Neptune pair discovered by <i>TESS</i> and <i>CHEOPS</i>
TOI-5126: a hot super-Neptune and warm Neptune pair discovered by <i>TESS</i> and <i>CHEOPS</i> Open
We present the confirmation of a hot super-Neptune with an exterior Neptune companion orbiting a bright (V = 10.1 mag) F-dwarf identified by the Transiting Exoplanet Survey Satellite (TESS). The two planets, observed in sectors 45, 46, and…
View article: TOI-5678b: A 48-day transiting Neptune-mass planet characterized with CHEOPS and HARPS
TOI-5678b: A 48-day transiting Neptune-mass planet characterized with CHEOPS and HARPS Open
Context. A large sample of long-period giant planets has been discovered thanks to long-term radial velocity surveys, but only a few dozen of these planets have a precise radius measurement. Transiting gas giants are crucial targets for th…
View article: TOI-4562b: A Highly Eccentric Temperate Jupiter Analog Orbiting a Young Field Star
TOI-4562b: A Highly Eccentric Temperate Jupiter Analog Orbiting a Young Field Star Open
We report the discovery of TOI-4562b (TIC-349576261), a Jovian planet orbiting a young F7V-type star, younger than the Praesepe/Hyades clusters ( days) and because it has a substantial eccentricity ( e = 0.76 ). The location o…
View article: Discovering Long-period Exoplanets using Deep Learning with Citizen Science Labels
Discovering Long-period Exoplanets using Deep Learning with Citizen Science Labels Open
Automated planetary transit detection has become vital to prioritize candidates for expert analysis given the scale of modern telescopic surveys. While current methods for short-period exoplanet detection work effectively due to periodicit…
View article: Validation of TOI-1221 b: A warm sub-Neptune exhibiting TTVs around a Sun-like star
Validation of TOI-1221 b: A warm sub-Neptune exhibiting TTVs around a Sun-like star Open
We present a validation of the long-period ($91.68278^{+0.00032}_{-0.00041}$ days) transiting sub-Neptune planet TOI-1221 b (TIC 349095149.01) around a Sun-like (m$_{\rm V}$=10.5) star. This is one of the few known exoplanets with period >…
View article: TOI-1338: TESS’ First Transiting Circumbinary Planet
TOI-1338: TESS’ First Transiting Circumbinary Planet Open
© 2020. The American Astronomical Society. All rights reserved. We report the detection of the first circumbinary planet (CBP) found by Transiting Exoplanet Survey Satellite (TESS). The target, a known eclipsing binary, was observed in sec…
View article: TOI-4562 b: A highly eccentric temperate Jupiter analog orbiting a young field star
TOI-4562 b: A highly eccentric temperate Jupiter analog orbiting a young field star Open
We report the discovery of TOI-4562 b (TIC-349576261), a Jovian planet orbiting a young F7V-type star, younger than the Praesepe/Hyades clusters (< $700$ Myr). This planet stands out because of its unusually long orbital period for transit…
View article: Surface Properties of Near-Sun Asteroids
Surface Properties of Near-Sun Asteroids Open
Near-Earth asteroids (NEAs) with small perihelion distances reach subsolar temperatures of ≥1000 K. They are hypothesized to undergo “supercatastrophic” disruption, potentially caused by near-Sun processes such as thermal cracking, spin-up…