H. J. Deeg
A5002640751- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astro and Planetary Science
- Astrophysics and Star Formation Studies
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
- History and Developments in Astronomy
- Adaptive optics and wavefront sensing
- Astronomical and nuclear sciences
- Galaxies: Formation, Evolution, Phenomena
- Calibration and Measurement Techniques
- Atmospheric Ozone and Climate
- Solar and Space Plasma Dynamics
- Astrophysical Phenomena and Observations
- Geophysics and Gravity Measurements
- Acute Myeloid Leukemia Research
- CCD and CMOS Imaging Sensors
- Spacecraft Design and Technology
- Scientific Research and Discoveries
- Hematopoietic Stem Cell Transplantation
- Space Science and Extraterrestrial Life
- Space Exploration and Technology
- Historical Astronomy and Related Studies
- Pulsars and Gravitational Waves Research
- Radio Astronomy Observations and Technology
Instituto de Astrofísica de Canarias
2015-2024
Universidad de La Laguna
2015-2024
University of Chicago
2023
Diego Portales University
2023
Consejo Superior de Investigaciones Científicas
2000-2019
Max Planck Society
1991-2019
Aix-Marseille Université
2019
Centre National de la Recherche Scientifique
2019
Max Planck Institute for Astronomy
2019
Institut d'Astrophysique de Paris
2008-2018
The SuperWASP cameras are wide‐field imaging systems at the Observatorio del Roque de los Muchachos on island of La Palma in Canary Islands, and Sutherland Station South African Astronomical Observatory. Each instrument has a field view some 482 deg2 with an angular scale 13 7 pixel−1, is capable delivering photometry accuracy better than 1% for objects having V∼7.0–11.5. Lower quality data brighter V∼15.0 stored project archive. systems, while designed to monitor fields high cadence,...
<i>Aims. <i/>We report the discovery of very shallow (), periodic dips in light curve an active G9V star observed by CoRoT satellite, which we interpret as caused a transiting companion. We describe 3-colour data and complementary ground-based observations that support planetary nature companion.<i>Methods. used colours information, good angular resolution photometric in- out- transit, adaptive optics imaging, near-infrared spectroscopy, preliminary results from radial velocity measurements,...
We report on an intensive observational campaign carried out with HARPS at the 3.6 m telescope La Silla star CoRoT-7. Additional simultaneous photometric measurements Euler Swiss have demonstrated that observed radial velocity variations are dominated by rotational modulation from cool spots stellar surface. Several approaches were used to extract signal of planet(s) activity signal. First, a simple pre-whitening procedure was employed find and subsequently remove periodic signals complex...
We report the detection of a transiting Jupiter-sized planet orbiting relatively bright (V=11.79) K0V star. detected transit light-curve signature in course TrES multi-site survey, and confirmed planetary nature companion via multicolor photometry precise radial velocity measurements. designate TrES-1; its inferred mass is 0.75 +/- 0.07 Jupiter masses, radius 1.08 (+0.18/-0.04) radii, orbital period 3.030065 0.000008 days. This has an similar to that HD 209458b, but about twice as long those...
Over the duration of Kepler mission, KIC8462852 was observed to undergo irregularly shaped, aperiodic dips in flux up $\sim 20$\%. The dipping activity can last for between 5 and 80 days. We characterize object with high-resolution spectroscopy, spectral energy distribution fitting, radial velocity measurements, imaging, Fourier analyses light curve. determine that is a typical main-sequence F3 V star exhibits no significant IR excess, has very close interacting companions. In this paper, we...
Aims. We report the discovery as well orbital and physical characterizations of two new transiting giant exoplanets, CoRoT-30 b CoRoT-31 b, with CoRoT space telescope. Methods. analyzed complementary data sets: photometric transit light curves measured by CoRoT, radial velocity HARPS spectrometer. To derive absolute masses radii planets, we modeled stars from available magnitudes spectra. Results. find that is a warm Jupiter on close-to-circular 9.06-day orbit around G3V star semi-major axis...
The exceptionally high luminosities of gamma-ray bursts (GRBs), gradually emerging as extremely useful probes star formation, make them promising tools for exploration the high-redshift Universe. Here we present a carefully selected sample Swift GRBs, intended to estimate in an unbiased way GRB mean redshift (), constraints on fraction and upper limit heavily obscured afterglows. We find that at least 7% GRBs originate . In addition, consistent with pre-Swift observations, most 20%...
Context. The CoRoT mission, a pioneer in exoplanet searches from space, has completed its first 150 days of continuous observations ~12000 stars the galactic plane. An analysis raw data identifies most promising candidates and triggers ground-based follow-up. Aims. We report on discovery transiting planet CoRoT-Exo-2b, with period 1.743 days, characterize main parameters. Methods. filter light curve cosmic impacts, orbital residuals, low frequency signals star. folded 78 transits is fitted...
Context. The CoRoT space mission routinely provides high-precision photometric measurements of thousands stars that have been continuously observed for months.
Context. The pioneer space mission for photometric planet searches, CoRoT, steadily monitors about 12 000 stars in each of its fields view. Transit candidates can be detected early the processing data and before end a run observation.
In this paper we present the first comprehensive results extracted from spectroscopic campaigns carried out by EXPORT (EXoPlanetary Observational Research Team) consortium. During 1998-1999, an intensive observational effort in framework of origin and evolution protoplanetary systems order to obtain clues on evolutionary path early stages pre-main sequence stars with planets already formed. The spectral types 70 stars, projected rotational velocities, , 45 mainly Vega-type sequence, have...
The role of cyclosporine alone or in combination with amphotericin B the development renal toxicity was evaluated 47 marrow transplant recipients. Cyclosporine given to 21 patients and 10 received plus B. These were compared 16 who methotrexate Serum creatinine doubled within 14–30 days 8 only cyclosporine. Of conjunction methotrexate, 3 their serum 5 starting In contrast, cyclosporine, tripled days. This increase significantly greater than that seen receiving combined. results suggest...
Exo-Dat is a database and an information system created primarily in support of the exoplanet program COnvection ROtation & planetary Transits (CoRoT) mission. In directions CoRoT pointings, it provides united interface to several sets data: stellar published catalogs, photometric spectroscopic data obtained during mission preparation, results from follow-up observations, mission-specific technical parameters. The new constitute subcatalog Exo-Cat, give consistent 4-color photometry 14.0...
We report on the confirmation and mass determination of Pi Men c, first transiting planet discovered by NASA's TESS space mission. is a naked-eye (V=5.65 mag), quiet G0 V star that was previously known to host sub-stellar companion (Pi b) long-period (Porb = 2091 days), eccentric (e 0.64) orbit. Using time-series photometry, combined with Gaia data, published UCLES@AAT Doppler measurements, archival HARPS@ESO-3.6m radial velocities, we found c close-in an orbital period Porb 6.27 days, Mc...
We present the discovery and characterisation of two transiting planets observed by \textit{TESS} in light curves young bright (V=9.67) star HD73583 (TOI-560). perform an intensive spectroscopic photometric space- ground-based follow-up order to confirm characterise system. found that is a ($\sim 500$~Myr) active with rotational period $12.08 \pm 0.11 $\,d, mass radius $ 0.73 0.02 M_\odot$ $0.65 R_\odot$, respectively. b ($P_b=6.3980420 _{ - 0.0000062 }^{+0.0000067}$ d) has $10.2...
We announce the discovery of second transiting hot Jupiter discovered by Trans-atlantic Exoplanet Survey. The planet, which we dub TrES-2, orbits nearby star GSC 03549-02811 every 2.47063 days. From high-resolution spectra, determine that has Teff = 5960 ± 100 K and log g 4.4 0.2, implying a spectral type G0 V mass 1.08 M☉. High-precision radial velocity measurements confirm sinusoidal variation with period phase predicted photometry, rule out presence line bisector variations would indicate...
We present contemporaneous optical and infrared (IR) photometric observations of the Type IIn SN 1998S covering period between 11 146 d after discovery. The IR data constitute first ever light curves a supernova. use blackbody spline fits to photometry examine luminosity evolution. During 2–3 months, is dominated by release shock-deposited energy in ejecta. After ∼100 powered mostly deposition radioactive decay from 0.15±0.05 M⊙ 56Ni which was produced explosion. also report discovery an...
We report measurements of the thermal emission young and massive planet CoRoT-2b at 4.5 8 <i>μ<i/>m with <i>Spitzer<i/> Infrared Array Camera (IRAC). Our measured occultation depths are 0.510<i>±<i/>0.042% 0.41<i>±<i/>0.11% <i>μ<i/>m. In addition to CoRoT optical measurements, these planet/star flux ratios indicate a poor heat distribution on night side agree better an atmosphere free temperature inversion layer. Still, such is not definitely ruled out by observations larger wavelength...
We describe the discovery of a massive transiting hot Jupiter with very short orbital period (1.30619 days), which we name TrES-3. From spectroscopy host star GSC 03089-00929, measure Teff = 5720 ± 150 K, log g 4.6 0.3, and v sin i < 2 km s-1 derive stellar mass 0.90 0.15 M☉. estimate planetary 1.92 0.23 MJup, based on sinusoidal variation our high-precision radial velocity measurements. This has phase consistent transit photometry. Our spectra show no evidence line bisector variations that...