83 citations · 229 across the 8 of their papers we have counts for
9 papers
Spectral properties of bright deposits in permanently shadowed craters on Ceres
Stefan Schröder, Norbert Schörghofer, Erwan Mazarico +1
Bright deposits in permanently shadowed craters on Ceres are thought to harbor water ice. However, the evidence for water ice presented thus far is indirect. We aim to directly det…
The brittle boulders of dwarf planet Ceres
Stefan Schröder, Uri Carsenty, Ernst Hauber +2
We mapped all boulders larger than 105 m on the surface of dwarf planet Ceres using images of the Dawn framing camera acquired in the Low Altitude Mapping Orbit (LAMO). We find tha…
The boulder population of asteroid 4 Vesta: Size-frequency distribution and survival time
Stefan E. Schröder, Uri Carsenty, Ernst Hauber +3
Dawn's framing camera observed boulders on the surface of Vesta when the spacecraft was in its lowest orbit (LAMO). We identified, measured, and mapped boulders in LAMO images, whi…
Ceres' opposition effect observed by the Dawn framing camera
Stefan E. Schröder, Jian-Yang Li, Marc D. Rayman +12
The surface reflectance of planetary regoliths may increase dramatically towards zero phase angle, a phenomenon known as the opposition effect (OE). Two physical processes that are…
Resolved Spectrophotometric Properties of the Ceres Surface from Dawn Framing Camera Images
S. E. Schröder, S. Mottola, U. Carsenty +9
We present a global spectrophotometric characterization of the Ceres surface using Dawn Framing Camera (FC) images. We identify the photometric model that yields the best results f…
Surface Albedo and Spectral Variability of Ceres
Jian-Yang Li, Vishnu Reddy, Andreas Nathues +21
Previous observations suggested that Ceres has active but possibly sporadic water outgassing, and possibly varying spectral characteristics in a time scale of months. We used all a…
Moon Search Algorithms for NASA's Dawn Mission to Asteroid Vesta
Nargess Memarsadeghi, Lucy A. McFadden, David Skillman +5
A moon or natural satellite is a celestial body that orbits a planetary body such as a planet, dwarf planet, or an asteroid. Scientists seek understanding the origin and evolution…
Panchromatic observations of the textbook GRB 110205A: constraining physical mechanisms of prompt emission and afterglow
W. Zheng, R. F. Shen, T. Sakamoto +56
We present a comprehensive analysis of a bright, long duration (T90 ~ 257 s) GRB 110205A at redshift z= 2.22. The optical prompt emission was detected by Swift/UVOT, ROTSE-IIIb and…
Recent GRBs observed with the 1.23m CAHA telescope and the status of its upgrade
Javier Gorosabel, Petr Kubanek, Martin Jelinek +13
We report on optical observations of Gamma-Ray Bursts (GRBs) followed up by our collaboration with the 1.23m telescope located at the Calar Alto observatory. The 1.23m telescope is…