A. S. Bosh
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View article: Material around the Centaur (2060) Chiron from the 2018 November 28 UT Stellar Occultation
Material around the Centaur (2060) Chiron from the 2018 November 28 UT Stellar Occultation Open
A stellar occultation of Gaia DR3 2646598228351156352 by the Centaur (2060) Chiron was observed from the South African Astronomical Observatory on 2018 November 28 UT. Here we present a positive detection of material surrounding Chiron fro…
View article: Material Around the Centaur (2060) Chiron from the 2018 November 28 UT Stellar Occultation
Material Around the Centaur (2060) Chiron from the 2018 November 28 UT Stellar Occultation Open
A stellar occultation of Gaia DR3 2646598228351156352 by the Centaur (2060) Chiron was observed from the South African Astronomical Observatory on 2018 November 28 UT. Here we present a positive detection of material surrounding Chiron fro…
View article: Uranus ring occultation observations: 1977–2006
Uranus ring occultation observations: 1977–2006 Open
The Uranian rings were discovered serendipitously on 10 March 1977 during a stellar occultation (Elliot et al., 1977a; Millis et al., 1977), and a rich set of subsequent Earth-based occultations revealed that these narrow and sharp-edged r…
View article: Occultation of a Large Star by the Large Plutino (28978) Ixion on 2020 October 13 UTC
Occultation of a Large Star by the Large Plutino (28978) Ixion on 2020 October 13 UTC Open
We observed the occultation of the star Gaia DR2 4056440205544338944 by (28978) Ixion. The event was observed from two Lowell Observatory sites, using the 4.3 m Lowell Discovery Telescope (LDT), near Happy Jack, AZ, USA, and a 0.32 m teles…
View article: The Formation of Bilobate Comet Shapes through Sublimative Torques
The Formation of Bilobate Comet Shapes through Sublimative Torques Open
Recent spacecraft and radar observations found that ∼70% of short-period comet nuclei, mostly Jupiter-family comets (JFCs), have bilobate shapes (two masses connected by a narrow neck). This is in stark contrast to the shapes of asteroids …
Characterization of material around the centaur (2060) Chiron from a visible and near-infrared stellar occultation in 2011 Open
The centaur (2060) Chiron exhibits outgassing behaviour and possibly hosts a ring system. On 2011 November 29, Chiron occulted a fairly bright star (R ∼ 15 mag) as observed from the 3-m NASA Infrared Telescope Facility (IRTF) on Mauna Kea …
View article: Probing the Hill Sphere of (486958) 2014 MU<sub>69</sub>. II. Hubble Space Telescope Fine Guidance Sensors Observations during the 2018 August 4 Stellar Occultation
Probing the Hill Sphere of (486958) 2014 MU<sub>69</sub>. II. Hubble Space Telescope Fine Guidance Sensors Observations during the 2018 August 4 Stellar Occultation Open
We observed the 2018 August 4 stellar occultation by the Kuiper Belt object (486958) 2014 MU 69 , the first close flyby target of the extended New Horizons mission. Rather than capture a solid-body occultation by the KBO itself, our progra…
View article: "It's full of asteroids!": Solar system science with a large field of view
"It's full of asteroids!": Solar system science with a large field of view Open
Next-generation space telescopes will have larger apertures, larger fields of view, and more sensitive instrumentation than their predecessors. The prospects for solar system science with these facilities are substantial, particularly in t…
View article: A new quadruple-image gravitational lens in an edge-on disk galaxy at z=0.0956
A new quadruple-image gravitational lens in an edge-on disk galaxy at z=0.0956 Open
We report the serendipitous discovery of a quadruply-lensed source behind the z=0.095 edge-on disk galaxy 2MASXJ13170000-1405187, based on public imaging survey data from Pan-STARRS PS1 and the VISTA Hemisphere Survey. Follow-up imaging fr…
View article: A New Quadruple-image Gravitational Lens in an Edge-on Disk Galaxy at z = 0.0956
A New Quadruple-image Gravitational Lens in an Edge-on Disk Galaxy at z = 0.0956 Open
We report the serendipitous discovery of a quadruply-lensed source behind the z=0.095 edge-on disk galaxy 2MASXJ13170000-1405187, based on public imaging survey data from Pan-STARRS PS1 and the VISTA Hemisphere Survey. Follow-up imaging fr…
View article: Solar system science with the Wide-Field InfraRed Survey Telescope (WFIRST)
Solar system science with the Wide-Field InfraRed Survey Telescope (WFIRST) Open
We present a community-led assessment of the solar system investigations achievable with NASA's next-generation space telescope, the Wide Field InfraRed Survey Telescope (WFIRST). WFIRST will provide imaging, spectroscopic, and coronagraph…
View article: Solar system science with the Wide-Field InfraRed Survey Telescope (WFIRST)
Solar system science with the Wide-Field InfraRed Survey Telescope (WFIRST) Open
We present a community-led assessment of the capabilities of NASA's Wide Field InfraRed Survey Telescope (WFIRST) for solar system science. WFIRST will provide imaging and spectroscopic capabilities from 0.6-2.0 $\mu$m and will be a potent…
View article: The TWA 3 Young Triple System: Orbits, Disks, Evolution
The TWA 3 Young Triple System: Orbits, Disks, Evolution Open
We have characterized the spectroscopic orbit of the TWA 3A binary and provide preliminary families of probable solutions for the TWA 3A visual orbit, as well as for the wide TWA 3A–B orbit. TWA 3 is a hierarchical triple located at 34 pc …
View article: TRIO OF STELLAR OCCULTATIONS BY PLUTO ONE YEAR PRIOR TO NEW HORIZONS' ARRIVAL
TRIO OF STELLAR OCCULTATIONS BY PLUTO ONE YEAR PRIOR TO NEW HORIZONS' ARRIVAL Open
We observed occultations by Pluto during a predicted series of events in 2014 July with the 1 m telescope of the Mt. John Observatory in New Zealand. The predictions were based on updated astrometry obtained in the previous months at the U…
View article: TRIO OF STELLAR OCCULTATIONS BY PLUTO ONE YEAR PRIOR TO NEW HORIZONS’ ARRIVAL
TRIO OF STELLAR OCCULTATIONS BY PLUTO ONE YEAR PRIOR TO NEW HORIZONS’ ARRIVAL Open
We observed occultations by Pluto during a predicted series of events in 2014 July with the 1 m telescope of the Mt. John Observatory in New Zealand. The predictions were based on updated astrometry obtained in the previous months at the U…
View article: <i>James Webb Space Telescope</i> Observations of Stellar Occultations by Solar System Bodies and Rings
<i>James Webb Space Telescope</i> Observations of Stellar Occultations by Solar System Bodies and Rings Open
In this paper we investigate the opportunities provided by the James Webb\nSpace Telescope (JWST) for significant scientific advances in the study of\nsolar system bodies and rings using stellar occultations. The strengths and\nweaknesses …