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View article: SPORES-HWO. II. Companion Mass Limits and Updated Planet Properties for 120 Future Exoplanet Imaging Targets from 35 yr of Precise Doppler Monitoring <sup>∗</sup>
SPORES-HWO. II. Companion Mass Limits and Updated Planet Properties for 120 Future Exoplanet Imaging Targets from 35 yr of Precise Doppler Monitoring <sup>∗</sup> Open
A goal of the future Habitable Worlds Observatory (HWO) is to directly image and spectroscopically characterize true Earth-analogs. However, if a large fraction of HWO target stars host unknown dynamically disruptive giant planets in their…
View article: No Giant Planets in the Eta Cassiopeiae System: Dynamical Implications of a Wide Binary Companion
No Giant Planets in the Eta Cassiopeiae System: Dynamical Implications of a Wide Binary Companion Open
Given the vast number of stars that exist within binary systems, it remains important to explore the effect of binary star environments on the formation and evolution of exoplanetary systems. Nearby binaries provide opportunities to charac…
View article: Radial Velocity Strategies for the Orbital Refinement of Exoplanet Direct Imaging Targets
Radial Velocity Strategies for the Orbital Refinement of Exoplanet Direct Imaging Targets Open
Many potential direct imaging candidates suffer from large orbital period uncertainties, leading to challenges in accurate predictions of future orbital positions and imprecise direct imaging measurements of planetary parameters. To improv…
View article: Radial Velocity Strategies for the Orbital Refinement of Exoplanet Direct Imaging Targets
Radial Velocity Strategies for the Orbital Refinement of Exoplanet Direct Imaging Targets Open
Many potential direct imaging candidates suffer from large orbital period uncertainties, leading to challenges in accurate predictions of future orbital positions and imprecise direct imaging measurements of planetary parameters. To improv…
View article: No Giant Planets in the Eta Cassiopeiae System: Dynamical Implications of a Wide Binary Companion
No Giant Planets in the Eta Cassiopeiae System: Dynamical Implications of a Wide Binary Companion Open
Given the vast number of stars that exist within binary systems, it remains important to explore the effect of binary star environments on the formation and evolution of exoplanetary systems. Nearby binaries provide opportunities to charac…
View article: Optimizing radial velocity detection limits for Southern Habitable Worlds Observatory targets
Optimizing radial velocity detection limits for Southern Habitable Worlds Observatory targets Open
The planned NASA Habitable Worlds Observatory (HWO) flagship mission aims to image and spectroscopically characterize 25 Earth-sized planets in the habitable zones of their stars. However, one giant planet in the habitable zone can ruin yo…
View article: Optimising Radial Velocity Detection Limits for Southern Habitable Worlds Observatory Targets
Optimising Radial Velocity Detection Limits for Southern Habitable Worlds Observatory Targets Open
The planned NASA Habitable Worlds Observatory (HWO) flagship mission aims to image and spectroscopically characterise 25 Earth-size planets in the habitable zones of their stars. However, one giant planet in the habitable zone can ruin you…
View article: Dynamical Viability Assessment for Habitable Worlds Observatory Targets
Dynamical Viability Assessment for Habitable Worlds Observatory Targets Open
Exoplanetary science is increasingly prioritizing efforts toward direct imaging of planetary systems, with emphasis on those that may enable the detection and characterization of potentially habitable exoplanets. The recent 2020 Astronomy …
View article: Dynamical Viability Assessment for Habitable Worlds Observatory Targets
Dynamical Viability Assessment for Habitable Worlds Observatory Targets Open
Exoplanetary science is increasingly prioritizing efforts toward direct imaging of planetary systems, with emphasis on those that may enable the detection and characterization of potentially habitable exoplanets. The recent 2020 Astronomy …
View article: The Roman coronagraph community participation program: observation planning
The Roman coronagraph community participation program: observation planning Open
The Coronagraphic Instrument onboard the Nancy Grace Roman Space Telescope is\nan important stepping stone towards the characterization of habitable, rocky\nexoplanets. In a technology demonstration phase conducted during the first 18\nmon…
View article: A Perfect Tidal Storm: HD 104067 Planetary Architecture Creating an Incandescent World
A Perfect Tidal Storm: HD 104067 Planetary Architecture Creating an Incandescent World Open
The discovery of planetary systems beyond the solar system has revealed a diversity of architectures, most of which differ significantly from our system. The initial detection of an exoplanet is often followed by subsequent discoveries wit…
View article: A Perfect Tidal Storm: HD 104067 Planetary Architecture Creating an Incandescent World
A Perfect Tidal Storm: HD 104067 Planetary Architecture Creating an Incandescent World Open
The discovery of planetary systems beyond the solar system has revealed a diversity of architectures, most of which differ significantly from our system. The initial detection of an exoplanet is often followed by subsequent discoveries wit…
View article: Revised Architecture and Two New Super-Earths in the HD 134606 Planetary System
Revised Architecture and Two New Super-Earths in the HD 134606 Planetary System Open
Multiplanet systems exhibit a diversity of architectures that diverge from the solar system and contribute to the topic of exoplanet demographics. Radial velocity (RV) surveys form a crucial component of exoplanet surveys, as their long ob…
View article: The TESS–Keck Survey. XIX. A Warm Transiting Sub-Saturn-mass Planet and a Nontransiting Saturn-mass Planet Orbiting a Solar Analog
The TESS–Keck Survey. XIX. A Warm Transiting Sub-Saturn-mass Planet and a Nontransiting Saturn-mass Planet Orbiting a Solar Analog Open
The Transiting Exoplanet Survey Satellite (TESS) continues to increase dramatically the number of known transiting exoplanets, and is optimal for monitoring bright stars amenable to radial velocity (RV) and atmospheric follow-up observatio…
View article: Revised Architecture and Two New Super-Earths in the HD 134606 Planetary System
Revised Architecture and Two New Super-Earths in the HD 134606 Planetary System Open
Multi-planet systems exhibit a diversity of architectures that diverge from the solar system and contribute to the topic of exoplanet demographics. Radial velocity (RV) surveys form a crucial component of exoplanet surveys, as their long o…
View article: Dynamical Interactions and Mass Loss within the Uranian System
Dynamical Interactions and Mass Loss within the Uranian System Open
The origin and evolution of planetary rings and moons remains an active area of study, particularly as they relate to the impact history and volatile inventory of the outer solar system. The Uranian system contains a complex system of ring…
View article: Dynamical Interactions and Mass Loss Within the Uranian System
Dynamical Interactions and Mass Loss Within the Uranian System Open
The origin and evolution of planetary rings and moons remains an active area of study, particularly as they relate to the impact history and volatile inventory of the outer solar system. The Uranian system contains a complex system of ring…
View article: SN 2023ixf in Messier 101: Photo-ionization of Dense, Close-in Circumstellar Material in a Nearby Type II Supernova
SN 2023ixf in Messier 101: Photo-ionization of Dense, Close-in Circumstellar Material in a Nearby Type II Supernova Open
We present UV and/or optical observations and models of SN 2023ixf, a type II supernova (SN) located in Messier 101 at 6.9 Mpc. Early time ( flash ) spectroscopy of SN 2023ixf, obtained primarily at Lick Observatory, reveals emission lines…
View article: Doppler Constraints on Planetary Companions to Nearby Sun-like Stars: An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging Missions*
Doppler Constraints on Planetary Companions to Nearby Sun-like Stars: An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging Missions* Open
Directly imaging temperate rocky planets orbiting nearby, Sun-like stars with a 6 m class IR/O/UV space telescope, recently dubbed the Habitable Worlds Observatory, is a high-priority goal of the Astro2020 Decadal Survey. To prepare for fu…
View article: The Demographics of Terrestrial Planets in the Venus Zone
The Demographics of Terrestrial Planets in the Venus Zone Open
Understanding the physical characteristics of Venus, including its atmosphere, interior, and its evolutionary pathway with respect to Earth, remains a vital component for terrestrial planet evolution models and the emergence and/or decline…
View article: Doppler Constraints on Planetary Companions to Nearby Sun-like Stars: An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging Missions
Doppler Constraints on Planetary Companions to Nearby Sun-like Stars: An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging Missions Open
Directly imaging temperate rocky planets orbiting nearby, Sun-like stars with a 6-m-class IR/O/UV space telescope, recently dubbed the Habitable Worlds Observatory, is a high priority goal of the Astro2020 Decadal Survey. To prepare for fu…
View article: The Demographics of Terrestrial Planets in the Venus Zone
The Demographics of Terrestrial Planets in the Venus Zone Open
Understanding the physical characteristics of Venus, including its atmosphere, interior, and its evolutionary pathway with respect to Earth, remains a vital component for terrestrial planet evolution models and the emergence and/or decline…
View article: A Catalog of Habitable Zone Exoplanets
A Catalog of Habitable Zone Exoplanets Open
The search for habitable planets has revealed many planets that can vary greatly from an Earth analog environment. These include highly eccentric orbits, giant planets, different bulk densities, relatively active stars, and evolved stars. …
View article: Erratum: “Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. II. Discovery of a Failed Hot Jupiter on a 2.7 yr, Highly Eccentric Orbit” (2021, AJ, 162, 154)
Erratum: “Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. II. Discovery of a Failed Hot Jupiter on a 2.7 yr, Highly Eccentric Orbit” (2021, AJ, 162, 154) Open
View article: A Catalog of Habitable Zone Exoplanets
A Catalog of Habitable Zone Exoplanets Open
The search for habitable planets has revealed many planets that can vary greatly from an Earth analog environment. These include highly eccentric orbits, giant planets, different bulk densities, relatively active stars, and evolved stars. …
View article: New Dynamical State and Habitability of the HD 45364 Planetary System
New Dynamical State and Habitability of the HD 45364 Planetary System Open
Planetary systems with multiple giant planets provide important opportunities to study planetary formation and evolution. The HD 45364 system hosts two giant planets that reside within the habitable zone (HZ) of their host star and was the…
View article: New Dynamical State and Habitability of the HD 45364 Planetary System
New Dynamical State and Habitability of the HD 45364 Planetary System Open
Planetary systems with multiple giant planets provide important opportunities to study planetary formation and evolution. The HD 45364 system hosts two giant planets that reside within the Habitable Zone (HZ) of their host star and was the…
View article: The Dynamical Viability of an Extended Jupiter Ring System
The Dynamical Viability of an Extended Jupiter Ring System Open
Planetary rings are often speculated as being a relatively common attribute of giant planets, partly based on their prevalence within the Solar System. However, their formation and sustainability remain a topic of open discussion, and the …
View article: The Dynamical Viability of an Extended Jupiter Ring System
The Dynamical Viability of an Extended Jupiter Ring System Open
Planetary rings are often speculated as being a relatively common attribute of giant planets, partly based on their prevalence within the solar system. However, their formation and sustainability remain a topic of open discussion, and the …
View article: HD 83443c: A Highly Eccentric Giant Planet on a 22 yr Orbit
HD 83443c: A Highly Eccentric Giant Planet on a 22 yr Orbit Open
We report the discovery of a highly eccentric long-period Jovian planet orbiting the hot-Jupiter host HD 83443. By combining radial velocity data from four instruments (AAT/UCLES, Keck/HIRES, HARPS, Minerva-Australis) spanning more than tw…