Publications (23)
Automatic Prediction of Building Age from Photographs
Matthias Zeppelzauer, Miroslav Despotovic, Muntaha Sakeena +2
We present a first method for the automated age estimation of buildings from unconstrained photographs. To this end, we propose a two-stage approach that firstly learns characteris…
Photometric Variability in Kepler Target Stars. II. An Overview of Amplitude, Periodicity, and Rotation in First Quarter Data
Gibor Basri, Lucianne M. Walkowicz, Natalie Batalha +10
We provide an overview of stellar variability in the first quarter of data from the Kepler mission. The intent of this paper is to examine the entire sample of over 150,000 target…
Additive manufacturing of Ni-Mn-Sn shape memory Heusler alloy -- Microstructure and magnetic properties from powder to printed parts
Franziska Scheibel, Christian Lauhoff, Philipp Krooà +9
Ni-Mn-based Heusler alloys like Ni-Mn-Sn show an elastocaloric as well as magnetocaloric effect during the magneto-structural phase transition, making this material interesting for…
Influence of microstructure on the application of Ni-Mn-In Heusler compounds for multicaloric cooling using magnetic field and uniaxial stress
Lukas Pfeuffer, Adrià Grà cia-Condal, Tino Gottschall +12
Novel multicaloric cooling utilizing the giant caloric response of Ni-Mn-based metamagnetic shape-memory alloys to different external stimuli such as magnetic field, uniaxial stres…
Five Kepler target stars that show multiple transiting exoplanet candidates
Jason H. Steffen, Natalie M. Batalha, William J. Borucki +27
We present and discuss five candidate exoplanetary systems identified with the Kepler spacecraft. These five systems show transits from multiple exoplanet candidates. Should these…
The Discovery of Ellipsoidal Variations in the Kepler Light Curve of HAT-P-7
William F. Welsh, Jerome A. Orosz, Sara Seager +5
We present an analysis of the early Kepler observations of the previously discovered transiting planet HAT-P-7b. The light curve shows the transit of the star, the occultation of t…
Discovery and Atmospheric Characterization of Giant Planet Kepler-12b: An Inflated Radius Outlier
Jonathan J. Fortney, Brice-Olivier Demory, Jean-Michel Desert +34
We report the discovery of planet Kepler-12b (KOI-20), which at 1.695\pm0.030 RJ is among the handful of planets with super-inflated radii above 1.65 RJ. Orbiting its slightly evol…
White-light flares on cool stars in the Kepler Quarter 1 Data
Lucianne M. Walkowicz, Gibor Basri, Natalie Batalha +11
We present the results of a search for white light flares on the ~23,000 cool dwarfs in the Kepler Quarter 1 long cadence data. We have identified 373 flaring stars, some of which…
Visual Estimation of Building Condition with Patch-level ConvNets
David Koch, Miroslav Despotovic, Muntaha Sakeena +2
The condition of a building is an important factor for real estate valuation. Currently, the estimation of condition is determined by real estate appraisers which makes it subjecti…
Reactive single-step hot-pressing and magnetocaloric performance of polycrystalline FeAlBGeGa () MAB phases
Benedikt Beckmann, Tarek A. El-Melegy, David Koch +7
Reactive single-step hot-pressing at 1473 K and 35 MPa for 4 h produces dense, bulk, near single-phase, low-cost and low-criticality FeAlB and FeAlB$_2…
Kepler Eclipsing Binary Stars. II. 2165 Eclipsing Binaries in the Second Data Release
Robert W. Slawson, Andrej Prsa, William F. Welsh +21
The Kepler Mission provides nearly continuous monitoring of ~156 000 objects with unprecedented photometric precision. Coincident with the first data release, we presented a catalo…
Photometric Variability in Kepler Target Stars: The Sun Among Stars -- A First Look
Gibor Basri, Lucianne M. Walkowicz, Natalie Batalha +10
The Kepler mission provides an exciting opportunity to study the lightcurves of stars with unprecedented precision and continuity of coverage. This is the first look at a large sam…
Detection of solar-like oscillations from Kepler photometry of the open cluster NGC 6819
Dennis Stello, Sarbani Basu, Hans Bruntt +49
Asteroseismology of stars in clusters has been a long-sought goal because the assumption of a common age, distance and initial chemical composition allows strong tests of the theor…
Kepler observations of a roAp star: delta Scuti and gamma Doradus pulsations in Ap stars
Luis Balona, Margarida Cunha, Don Kurtz +9
Observations of the A5p star KIC 8677585 obtained during the Kepler 10-d commissioning run with 1-min time resolution show that it is a roAp star with several frequencies with peri…
Laser Powder Bed Fusion of anisotropic Nd-Fe-B bonded magnets utilizing an in situ mechanical alignment approach
Kilian Schäfer, Rafael Gitti Tortoretto Fim, Fernando Maccari +9
Nd-Fe-B bonded magnets are an important class of permanent magnets, employed in many technological sectors. The Additive Manufacturing (AM) processes enables the fabrication of net…
The Occurrence of Rocky Habitable Zone Planets Around Solar-Like Stars from Kepler Data
Steve Bryson, Michelle Kunimoto, Ravi K. Kopparapu +79
We present occurrence rates for rocky planets in the habitable zones (HZ) of main-sequence dwarf stars based on the Kepler DR25 planet candidate catalog and Gaia-based stellar prop…
Microstructure engineering of metamagnetic Ni-Mn-based Heusler compounds by Fe-doping: A roadmap towards excellent cyclic stability combined with large elastocaloric and magnetocaloric effects
Lukas Pfeuffer, Jonas Lemke, Navid Shayanfar +9
Ni-Mn-based metamagnetic shape-memory alloys exhibit a giant thermal response to magnetic fields and uniaxial stress which can be utilized in single caloric or multicaloric cooling…
Controlling the oxidation of magnetic and electrically conductive solid-solution iron-rhodium nanoparticles synthesized by Laser Ablation in Liquids
Ruksan Nadarajah, Shabbir Tahir, Joachim Landers +11
This study focuses on the synthesis of FeRh nanoparticles via pulsed laser ablation in liquid and on controlling the oxidation of the synthesized nanoparticles. Formation of monomo…
Spin-Orbit Alignment for the Circumbinary Planet Host Kepler-16A
Joshua N. Winn, Simon Albrecht, John Asher Johnson +31
Kepler-16 is an eccentric low-mass eclipsing binary with a circumbinary transiting planet. Here we investigate the angular momentum of the primary star, based on Kepler photometry…
The hot-Jupiter Kepler-17b: discovery, obliquity from stroboscopic starspots, and atmospheric characterization
Jean-Michel Désert, David Charbonneau, Brice-Olivier Demory +38
This paper reports the discovery and characterization of the transiting hot giant exoplanet Kepler-17b. The planet has an orbital period of 1.486 days, and radial velocity measurem…
Kepler-16: A Transiting Circumbinary Planet
Laurance R. Doyle, Joshua A. Carter, Daniel C. Fabrycky +46
We report the detection of a planet whose orbit surrounds a pair of low-mass stars. Data from the Kepler spacecraft reveal transits of the planet across both stars, in addition to…
Kepler Observations of Transiting Hot Compact Objects
Jason F. Rowe, William J. Borucki, David Koch +18
Kepler photometry has revealed two unusual transiting companions orbiting an early A-star and a late B-star. In both cases the occultation of the companion is deeper than the trans…
Dissipation losses limiting first-order phase transition materials in cryogenic caloric cooling: A case study on all-d-metal Ni(-Co)-Mn-Ti Heusler alloys
Benedikt Beckmann, David Koch, Lukas Pfeuffer +11
Ni-Mn-based Heusler alloys, in particular all-d-metal Ni(-Co)-Mn-Ti, are highly promising materials for energy-efficient solid-state refrigeration as large multicaloric effects can…