A5077446190- Stellar, planetary, and galactic studies
- Astro and Planetary Science
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Space Exploration and Technology
- Scientific Research and Discoveries
- Gamma-ray bursts and supernovae
- Space exploration and regulation
- Technology Assessment and Management
- Spacecraft and Cryogenic Technologies
- History and Developments in Astronomy
- Biocrusts and Microbial Ecology
- Planetary Science and Exploration
- Aeolian processes and effects
- Economic Growth and Productivity
- Photocathodes and Microchannel Plates
- Isotope Analysis in Ecology
- Spacecraft Design and Technology
Yale University
2022-2024
Princeton University
2020-2021
Abstract The Transiting Exoplanet Survey Satellite (TESS) has discovered hundreds of new worlds, with TESS planet candidates now outnumbering the total number confirmed planets from Kepler. Owing to differences in survey design, continues provide that are better suited for subsequent follow-up studies, including mass measurement through radial velocity (RV) observations, compared Kepler targets. In this work, we present TESS-Keck Survey’s (TKS) Mass Catalog: a uniform analysis all TKS RV...
Abstract The degree of alignment between a star’s spin axis and the orbital plane its planets (the stellar obliquity) is related to interesting poorly understood processes that occur during planet formation evolution. Hot Jupiters orbiting hot stars (≳6250 K) display wide range obliquities, while similar cool are preferentially aligned. Tidal dissipation expected be more rapid in with thick convective envelopes, potentially explaining this trend. Evolved provide an opportunity test damping...
It has been known for a decade that hot stars with Jupiters tend to have high obliquities. Less is about the degree of spin-orbit alignment other kinds planets. Here, we re-assess obliquities Kepler transiting planets smaller than Neptune, based on spectroscopic measurements their projected rotation velocities (vsini). The basis method lower obliquity -- all things being equal causes sini be closer unity and increases value vsini. We sought evidence this effect using sample 150 effective...
Abstract The distribution of stellar obliquities provides critical insight into the formation and evolution pathways exoplanets. In past decade, it was found that hot stars hosting Jupiters are more likely to have high than cool stars, but is not clear whether this trend exists only for or holds other types planets. work, we extend study (6250–7000 K) with transiting super-Earth-sized sub-Neptune-sized We constrain obliquity based on measurements stars’ projected rotation velocities. Our...
Abstract With JWST’s successful deployment and unexpectedly high fuel reserves, measuring the masses of sub-Neptunes transiting bright, nearby stars will soon become bottleneck for characterizing atmospheres small exoplanets via transmission spectroscopy. Using a carefully curated target list observations from more than 2 yr APF-Levy Keck-HIRES Doppler monitoring, TESS-Keck Survey is working toward alleviating this pressure. Here we present mass measurements 11 planets in eight systems that...
The distribution of stellar obliquities provides critical insight into the formation and evolution pathways exoplanets. In past decade, it was found that hot stars hosting Jupiters are more likely to have high than cool stars, but is not clear whether this trend exists only for or holds other types planets. work, we extend study (6250-7000\,K) with transiting super-Earth sub-Neptune-sized We constrain obliquity based on measurements stars' projected rotation velocities. Our sample consists...
Abstract There is an intriguing and growing population of Neptune-sized planets with stellar obliquities near ∼90°. One previously proposed formation pathway a disk-driven resonance, which can take place at the end stages planet in system containing inner Neptune, outer cold Jupiter, protoplanetary disk. This mechanism occurs within first ∼10 Myr, but most polar Neptunes we see today are ∼Gyr old. Up until now, there has not been extensive analysis whether orbits stable over timescales....
We present the mission concept "Mission to Analyze UltraViolet universE" (MAUVE), a wide-field spectrometer and imager conceived during inaugural NASA Astrophysics Mission Design School. MAUVE responds 2023 Announcement of Opportunity for Probe-class missions, with budget cap \$1 billion, would hypothetically launch in 2031. However, formulation was an educational exercise is not being developed further. The Principal Investigator-led science aligns priorities outlined 2020 Decadal Survey,...
There is an intriguing and growing population of Neptune-sized planets with stellar obliquities near $\sim90^{\circ}$. One previously proposed formation pathway a disk-driven resonance, which can take place at the end stages planet in system containing inner Neptune, outer cold Jupiter, protoplanetary disk. This mechanism occurs within first $\sim10$ Myr, but most polar Neptunes we see today are $\sim$Gyrs old. Up until now, there has not been extensive analysis whether orbits stable over...
Since 2015, the Emerging Researchers in Exoplanetary Science (ERES) conference has provided a venue for early-career researchers exoplanetary astronomy, astrophysics, and planetary science to share their research, network, build new collaborations. ERES stands out that it is spearheaded by researchers, providing unique attendance experience participants professional organizers. In this Bulletin, we experiences lessons learned from perspective of organizing committee 2023 edition ERES. For...
Abstract The efficiency of tidal dissipation provides a zeroth-order link to planet’s physical properties. For super-Earth and sub-Neptune planets in the range R ⊕ ≲ p 4 , particularly efficient (i.e., low quality factors) may signify terrestrial-like capable maintaining rigid crustal features. Here, we explore global constraints on planetary factors using population multiple-planet systems whose orbital properties indicate susceptibility capture into secular spin–orbit resonances. Planets...
We present a revised characterisation of the previously discovered transiting planet systems HATS-34 and HATS-46. make use newly available space-based light curves from NASA TESS mission high-precision parallax absolute photometry measurements ESA Gaia to determine mass radius planets host stars with dramatically increased precision accuracy compared published values, uncertainties in some parameters reduced by as much factor seven. Using an isochrone based fit, for we measure star...
With JWST's successful deployment and unexpectedly high fuel reserves, measuring the masses of sub-Neptunes transiting bright, nearby stars will soon become bottleneck for characterizing atmospheres small exoplanets via transmission spectroscopy. Using a carefully curated target list more than two years' worth APF-Levy Keck-HIRES Doppler monitoring, TESS-Keck Survey is working toward alleviating this pressure. Here we present mass measurements 11 planets in eight systems that are...
The space industry has seen unprecedented levels of investment in the past two decades, with venture capital being only one part growth commercial space. However, other types have contributed to development industry, including international government budgets, internal research and by large contractors, surge angel investment. This paper aims present Spacescape: industry's different sources, mechanisms, recipients. preliminary findings suggest that start-up a significant increase recent...
The efficiency of tidal dissipation provides a zeroth-order link to planet's physical properties. For super-Earth and sub-Neptune planets in the range $R_{\oplus}\lesssim R_p \lesssim 4 R_{\oplus}$, particularly efficient (i.e., low quality factors) may signify terrestrial-like capable maintaining rigid crustal features. Here we explore global constraints on planetary factors using population multiple-planet systems whose orbital properties indicate susceptibility capture into secular...
This book was created as part of the SIRIUS B VERGE program to orient students astrophysics a broad field. The 2023-2024 and printing this is funded by Women Girls in Astronomy Program via International Astronomical Union's North American Regional Office for Development Heising-Simons Foundation; result, document written women astronomy girls who are looking pursue However, given its universal nature, material covered guide useful anyone interested pursuing professionally.