Thomas Henning
A5080805971- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astro and Planetary Science
- Astronomy and Astrophysical Research
- Astronomical Observations and Instrumentation
- Molecular Spectroscopy and Structure
- Adaptive optics and wavefront sensing
- Atmospheric Ozone and Climate
- Calibration and Measurement Techniques
- Astrophysical Phenomena and Observations
- Gamma-ray bursts and supernovae
- Spectroscopy and Laser Applications
- Galaxies: Formation, Evolution, Phenomena
- Advanced Chemical Physics Studies
- Space Exploration and Technology
- Planetary Science and Exploration
- Solar and Space Plasma Dynamics
- Geophysics and Gravity Measurements
- Optical measurement and interference techniques
- High-pressure geophysics and materials
- Atomic and Molecular Physics
- Advanced optical system design
- Pulsars and Gravitational Waves Research
- Advanced Combustion Engine Technologies
- History and Developments in Astronomy
Max Planck Institute for Astronomy
2016-2025
Laboratoire d’études spatiales et d’instrumentation en astrophysique
2022-2024
Goddard Space Flight Center
2024
University of Central Florida
2023
California Institute of Technology
2023
Université de Versailles Saint-Quentin-en-Yvelines
2022
Sorbonne Université
1996-2022
Observatoire de Paris
2022
Délégation Paris 7
2022
Université Paris Cité
2022
The Transiting Exoplanet Survey Satellite (TESS) will search for planets transiting bright and nearby stars. TESS has been selected by NASA launch in 2017 as an Astrophysics Explorer mission. spacecraft be placed into a highly elliptical 13.7-day orbit around the Earth. During its two-year mission, employ four wide-field optical CCD cameras to monitor at least 200,000 main-sequence dwarf stars with I = 4-13 temporary drops brightness caused planetary transits. Each star observed interval...
Pan-STARRS1 has carried out a set of distinct synoptic imaging sky surveys including the $3π$ Steradian Survey and Medium Deep in 5 bands ($grizy_{P1}$). The mean 5$σ$ point source limiting sensitivities stacked 3$π$ $grizy_{P1}$ are (23.3, 23.2, 23.1, 22.3, 21.4) respectively. upper bound on systematic uncertainty photometric calibration across is 7-12 millimag depending bandpass. astrometric using Gaia frame comes from comparison results with Gaia: standard deviation median residuals ($...
The Transiting Exoplanet Survey Satellite (TESS ) will search for planets transiting bright and nearby stars. TESS has been selected by NASA launch in 2017 as an Astrophysics Explorer mission. spacecraft be placed into a highly elliptical 13.7-day orbit around the Earth. During its two-year mission, employ four wide-field optical CCD cameras to monitor at least 200,000 main-sequence dwarf stars with I<sub>C</sub> (approximately less than) 13 temporary drops brightness caused planetary...
<i>Context. <i/>Thanks to its excellent 5100 m high site in Chajnantor, the Atacama Pathfinder Experiment (APEX) systematically explores southern sky at submillimeter wavelengths, both continuum and spectral line emission. Studying emission from interstellar dust is essential locating highest density regions medium, deriving their masses, column densities, structures, large-scale morphologies. In particular, early stages of (massive) star formation remain poorly understood, mainly because...
The star S2 orbiting the compact radio source Sgr A* is a precision probe of gravitational field around closest massive black hole (candidate). Over last 2.7 decades we have monitored star’s radial velocity and motion on sky, mainly with SINFONI NACO adaptive optics (AO) instruments ESO VLT, since 2017, four-telescope interferometric beam combiner instrument GRAVITY. In this Letter report first detection General Relativity (GR) Schwarzschild Precession (SP) in S2’s orbit. Owing to its highly...
Direct detection and spectral characterization of extra-solar planets is one the most exciting but also challenging areas in modern astronomy. The challenge consists very large contrast between host star planet, larger than 12.5 magnitudes at small angular separations, typically inside seeing halo. whole design a "Planet Finder" instrument therefore optimized towards reaching highest limited field view short distances from central star. Both evolved young planetary systems can be detected,...
Context. This is the fourth paper in a series showing results of planet population synthesis calculations. Aims. Our goal this to systematically study effects important disk properties, namely metallicity, mass and lifetime on fundamental planetary properties. Methods. For large number protoplanetary disks we calculate planets with our core accretion formation model including migration evolution. Results. We find correlations: Regarding initial function, have different roles: high [Fe/H],...
We apply hydrodynamic evaporation models to different synthetic planet populations that were obtained from a formation code based on core-accretion paradigm. investigated the evolution of using several models, which are distinguished by driving force escape flow (X-ray or EUV), heating efficiency in energy-limited regimes, both. Although mass distribution is barely affected evaporation, radius clearly shows break at approximately 2 $R_{\oplus}$. find can lead bimodal planetary sizes (Owen &...
Aims: We derive the probability density functions (PDFs) of column for a complete sample prominent molecular cloud complexes closer than 200 pc. Methods: near-infrared dust extinction maps 23 complexes, using "nicest" colour excess mapping technique and data from 2MASS archive. The are then used to examine PDFs in clouds. Results: most clouds well-fitted by log-normal at low densities (0.5 mag < A_v 3-5 mag). However, higher prominent, power-law-like wings common. In particular, we identify...
Gravitational forces are expected to excite spiral density waves in protoplanetary disks, disks of gas and dust orbiting young stars. However, previous observations that showed structure were not able probe disk midplanes, where most the mass is concentrated planet formation takes place. Using Atacama Large Millimeter/submillimeter Array we detected a pair trailing symmetric arms surrounding star Elias 2-27. The extend outer regions can be traced down midplane. These millimeter-wave also...
The study of dynamical processes in protoplanetary disks is essential to understand planet formation. In this context, transition are prime targets because they at an advanced stage disk clearing and may harbor direct signatures evolution. paper, we aim derive new constraints on the structure MWC 758, detect non-axisymmetric features their origin. We obtained infrared polarized intensity observations 758 with SPHERE/VLT 1.04 microns resolve scattered light a smaller inner working angle...
Observations of circumstellar environments to look for the direct signal exoplanets and scattered light from disks has significant instrumental implications. In past 15 years, major developments in adaptive optics, coronagraphy, optical manufacturing, wavefront sensing data processing, together with a consistent global system analysis have enabled new generation high-contrast imagers spectrographs on large ground-based telescopes much better performance. One most productive is...
The SHINE program is a large high-contrast near-infrared survey of 600 young, nearby stars. It aimed at searching for and characterizing new planetary systems using VLT/SPHERE's unprecedented high-angular resolution imaging capabilities. also intends placing statistical constraints on the occurrence orbital properties giant planet population orbits as function stellar host mass age to test formation theories. We use IRDIS dual-band imager IFS integral field spectrograph SPHERE acquire...
A first characterization of many exoplanets has recently been achieved by the observational determination their radius. For some planets, a measurement luminosity also possible, with more directly imaged planets expected in future. The statistical through mass-radius and mass-luminosity diagram is thus becoming possible. This for planet formation evolution theory similar importance as mass-distance diagram. Our aim this companion paper to extend our model into coupled model. We want...
We present a 0.16% precise and 0.27% accurate determination of R0, the distance to Galactic Center. Our measurement uses star S2 on its 16-year orbit around massive black hole Sgr A* that we followed astrometrically spectroscopically for 27 years. Since 2017, added near-infrared interferometry with VLTI beam combiner GRAVITY, yielding direct separation vector between an accuracy as good 20 micro-arcsec in best cases. passed pericenter highly eccentric May 2018, passage dense sampling...
Context. The APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) is first systematic survey inner Galactic plane in sub-millimetre. observations were carried out with Bolometer Camera (LABOCA), an array 295 bolometers observing at 870 microns (345 GHz). Aims. Here we present a version compact source catalogue extracted from this survey. This provides unbiased database dusty clumps Galaxy. Methods. construction was made using extraction routine SExtractor. We have cross-associated...
We present the results of an extensive high-resolution imaging survey M-dwarf multiplicity using Lucky Imaging technique. The made use AstraLux Norte camera at Calar Alto 2.2m telescope and Sur ESO New Technology Telescope in order to cover nearly full sky. In total, 761 stars were observed (701 M-type 60 late K-type), among which 182 new 37 previously known companions detected 205 systems. Most targets have been during two or more epochs, could be confirmed as physical through common proper...
This paper gives an overview of the CARMENES instrument and survey that will be carried out with it during first years operation. (Calar Alto high-Resolution search for M dwarfs Exoearths Near-infrared optical Echelle Spectrographs) is a next-generation radial-velocity under construction 3.5m telescope at Calar Observatory by consortium eleven Spanish German institutions. The scientific goal project conducting 600-night exoplanet targeting ~ 300 completed instrument. consists two separate...
We present 197 planet candidates discovered using data from the first year of NASA K2 mission (Campaigns 0-4), along with results an intensive program photometric analyses, stellar spectroscopy, high-resolution imaging, and statistical validation. distill these into sets 104 validated planets (57 in multi-planet systems), 30 false positives, 63 remaining candidates. Our systems span a range properties, median values R_P = 2.3 R_E, P=8.6 d, Tef 5300 K, Kp=12.7 mag. Stellar spectroscopy...
Prior to the origin of simple cellular life, building blocks RNA (nucleotides) had form and polymerize in favourable environments on early Earth. At this time, meteorites interplanetary dust particles delivered organics such as nucleobases (the characteristic molecules nucleotides) warm little ponds whose wet-dry cycles promoted rapid polymerization. We build a comprehensive numerical model for evolution leading emergence first nucleotides RNA. couple Earth's with complex prebiotic chemistry...