A5034072622- Astro and Planetary Science
- Stellar, planetary, and galactic studies
- Geomagnetism and Paleomagnetism Studies
- Planetary Science and Exploration
- Astronomy and Astrophysical Research
- Solar and Space Plasma Dynamics
- Historical Astronomy and Related Studies
- Astrophysics and Star Formation Studies
- Historical and Architectural Studies
- High-pressure geophysics and materials
- Gamma-ray bursts and supernovae
- Calibration and Measurement Techniques
- Global Energy and Sustainability Research
- History and Developments in Astronomy
- Ancient Near East History
- Space Science and Extraterrestrial Life
- Space Satellite Systems and Control
- Solar Radiation and Photovoltaics
- Astronomical Observations and Instrumentation
- Historical, Religious, and Philosophical Studies
Institute of Astronomy and Astrophysics, Academia Sinica
2022-2023
Okanagan University College
2022-2023
University of British Columbia
2018-2023
Abstract The Outer Solar System Origins Survey (OSSOS), a wide-field imaging program in 2013–2017 with the Canada–France–Hawaii Telescope, surveyed 155 deg 2 of sky to depths m r = 24.1–25.2. We present 838 outer solar system discoveries that are entirely free ephemeris bias. This increases inventory trans-Neptunian objects (TNOs) accurately known orbits by nearly 50%. Each minor planet has 20–60 Gaia /Pan-STARRS-calibrated astrometric measurements made over 2–5 oppositions, which allows...
Abstract We highlight the announcement by IAU Minor Planet Center of 128 new irregular moons Saturn discovered in our CFHT imaging acquired 2023. were able to link 83 detections from earlier 2019–2021 study. Of 58 retrograde with multiyear arcs, 46 are likely Mundilfari subgroup. This large fraction is line steep size distribution subgroup and idea that it was created a recent collision. Also, more than tripling number Kiviuq members, discoveries have confirmed this very tightly grouped...
Abstract Using CFHT imaging data, we searched a 1.1 deg 2 field on each side of Saturn down to magnitude m w ≃ 26.3, corresponding diameters D 3 km. We detected 120 objects, which were comoving with and are nearly certainly irregular moons. For example, all but one our detections brighter than 25.5 link known Saturnian irregulars, 40 linkages that thus extend the orbital arc previous discoveries. Extrapolating sample's characterized (those for can debias search) entire population, estimate...
Abstract We have searched a 2010 archival data set from the Canada–France–Hawaii Telescope for very small (km-scale) irregular moons of Jupiter in order to constrain size distribution these down radii ∼400 m, discovering 52 objects that are moving with Jupiter-like on-sky rates and nearly certainly moons. The four brightest detections, seven total, were all then linked known Jovian Extrapolating our characterized detections (those magnitude m r = 25.7) entire retrograde circum-Jovian...
Abstract We present a tracked orbit for recently discovered 25th magnitude irregular moon of Saturn, using Canada-France-Hawaii Telescope imaging. Our 2 yr observational arc on the leads to an with semimajor axis 11.2 million kilometers and inclination 44 deg. This makes it one smallest Saturnian orbits known puts in Inuit group. is also brighter than faintest irregulars. show that moon’s small results spending most time lost glare often-nearby planet, thus explaining how escaped detection...
Abstract From the first phase of high-cadence Formation Outer Solar System: an Icy Legacy (FOSSIL) survey, we analyzed lightcurves, ranging from one to four nights in length, 371 trans-Neptunian objects (TNOs) for periodicity. We found 29 TNOs with periodic which is a good candidate close/contact binary. Another FOSSIL could potentially have fastest all known TNO spin rates, period 1.3 hr. do not total confidence and thus plan obtain more detailed lightcurve confirmation. The average...
We have searched a 2010 archival data set from the Canada-France-Hawaii Telescope for very small (km-scale) irregular moons of Jupiter in order to constrain size distribution these down radii ~400m, discovering 53 objects which are moving with Jupiter-like on-sky rates and nearly certainly moons. The four brightest detections, seven total, were all then linked known jovian Extrapolating our characterized detections (those magnitude mr=25.7) entire retrograde circum-jovian population, we...