Publications (51)
Gas phase mean opacities for varying [M/H], N/O, and C/O
Ch. Helling, W. Lucas
The impact of M-dwarf atmosphere modelling on planet detection
I. Bozhinova, Ch. Helling, C. Stark
First spectroscopic observations of the sub-stellar companion of the young debris disk star PZ Telescopii
T. O. B. Schmidt, M. Mugrauer, R. Neuhäuser +5
Aspects of Multi-Dimensional Modelling of Substellar Atmospheres
Ch. Helling, E. Pedretti, S. Berdyugina +6
Dust in brown dwarfs and extra-solar planets II. Cloud formation for cosmologically evolving abundances
S. Witte, Ch. Helling, P. H. Hauschildt
The Influence of Galactic Cosmic Rays on Ion-Neutral Hydrocarbon Chemistry in the Upper Atmospheres of Free-Floating Exoplanets
P. B. Rimmer, Ch. Helling, C. Bilger
Prospects for Detection of Exoplanet Magnetic Fields Through Bow-Shock Observations During Transits
A. A. Vidotto, M. Jardine, Ch. Helling
Direct Imaging discovery of a second planet candidate around the possibly transiting planet host CVSO 30
T. O. B. Schmidt, R. Neuhäuser, C. Briceño +11
Atmospheric electrification in dusty, reactive gases in the solar system and beyond
Ch. Helling, R. G. Harrison, F. Honary +7
Ionisation in atmospheres of Brown Dwarfs and extrasolar planets II Dust-induced collisional ionization
Ch. Helling, M. Jardine, F. Mokler
Disk evolution, element abundances and cloud properties of young gas giant planets
Ch. Helling, P. Woitke, P. B. Rimmer +3
Direct evidence of a sub-stellar companion around CT Cha
T. O. B. Schmidt, R. Neuhäuser, A. Seifahrt +5
Dust in Brown Dwarfs IV. Dust formation and driven turbulence on mesoscopic scales
Ch. Helling, R. Klein, P. Woitke +2
Robust detection of quasi-periodic variability: A HAWKI mini survey of late T dwarfs
S. P. Littlefair, B. Burningham, Ch. Helling
Ionisation in atmospheres of brown dwarfs and extrasolar planets VI: Properties of large-scale discharge events
R. L. Bailey, Ch. Helling, G. Hodosán +2
Mass Transfer, Transiting Stream and Magnetopause in Close-in Exoplanetary Systems with Applications to WASP-12
Dong Lai, Ch. Helling, E. P. J. van den Heuvel
Cloud formation in metal-rich atmospheres of hot super-Earths like 55 Cnc e and CoRot7b
G. Mahapatra, Ch. Helling, Y. Miguel
Equilibrium chemistry down to 100 K - Impact of silicates and phyllosilicates on carbon/oxygen ratio
P. Woitke, Ch. Helling, G. H. Hunter +5
Ionisation and discharge in cloud-forming atmospheres of brown dwarfs and extrasolar planets
Ch. Helling, P. B. Rimmer, I. M. Rodriguez-Barrera +3
Reference study to characterise plasma and magnetic properties of ultra-cool atmospheres
M. I. Rodriguez-Barrera, Ch. Helling, C. R. Stark +1
Shock formation around planets orbiting M-dwarf stars
A. A. Vidotto, J. Llama, M. Jardine +2
Multiwaveband photometry of the irradiated brown dwarf WD0137-349B
S. L. Casewell, K. A. Lawrie, P. F. L. Maxted +7
The influence of non-isotropic scattering of thermal radiation on spectra of brown dwarfs and hot exoplanets
R. J. de Kok, Ch. Helling, D. M. Stam +2
Early UV Ingress in WASP-12b: Measuring Planetary Magnetic Fields
A. A. Vidotto, M. Jardine, Ch. Helling
Rain and clouds in brown dwarf atmospheres: A coupled problem from small to large
Ch. Helling, P. Woitke
The First Millimeter Detection of a Non-Accreting Ultracool Dwarf
P. K. G. Williams, S. L. Casewell, C. R. Stark +3
Ionisation in atmospheres of Brown Dwarfs and extrasolar planets III. Breakdown conditions for mineral clouds
Ch. Helling, M. Jardine, C. Stark +1
The shocking transit of WASP-12b: Modelling the observed early ingress in the near ultraviolet
J. Llama, K. Wood, M. Jardine +4
Sparkling nights and very hot days on WASP-18b: the formation of clouds and the emergence of an ionosphere
Ch. Helling, P. Gourbin, P. Woitke +1
Transit Variability in Bow Shock-Hosting Planets
A. A. Vidotto, M. Jardine, Ch. Helling
MOVES I. The evolving magnetic field of the planet-hosting star HD189733
R. Fares, V. Bourrier, A. A. Vidotto +9
Planetary host stars: Evaluating uncertainties in ultra-cool model atmospheres
I. Bozhinova, Ch. Helling, A. Scholz
Simulating the cloudy atmospheres of HD 209458 b and HD 189733 b with the 3D Met Office Unified Model
S. Lines, N. J. Mayne, Ian A. Boutle +9
Discovery of carbon monoxide in the upper atmosphere of Pluto
J. S. Greaves, Ch. Helling, P. Friberg
The Influence of Dust Formation Modelling on Na I and K I Line Profiles in Substellar Atmospheres
C. M. S. Johnas, Ch. Helling, M. Dehn +2
Ionisation in atmospheres of Brown Dwarfs and extrasolar planets I The role of electron avalanche
Ch. Helling, M. Jardine, S. Witte +1
Atmospheric characterization of the ultra-hot Jupiter MASCARA-2b/KELT-20b
N. Casasayas-Barris, E. Palle, F. Yan +15
Careers in astronomy in Germany and the UK
J. Fohlmeister, Ch. Helling
M dwarf stars in the light of (future) exoplanet searches
B. Rojas-Ayala, E. J. Hilton, A. W. Mann +8
Spectroscopy across the brown dwarf/planetary mass boundary - I. Near-infrared JHK spectra
J. Patience, R. R. King, R. J. De Rosa +5
Emission lines in the atmosphere of the irradiated brown dwarf WD0137-349B
E. S. Longstaff, S. L. Casewell, G. A. Wynn +2
The mineral clouds on HD 209458b and HD189733b
Ch. Helling, G. Lee, I. Dobbs-Dixon +7
Career situation of female astronomers in Germany
J. Fohlmeister, Ch. Helling
Dust in Brown Dwarfs and Extra-solar Planets I. Chemical composition and spectral appearance of quasi-static cloud layers
Ch. Helling, P. Woitke, W. -F. Thi
Rosseland and Planck Mean Opacities for Protoplanetary Discs
D. Semenov, Th. Henning, Ch. Helling +2
Characterising exoplanets and their environment with UV transmission spectroscopy
L. Fossati, V. Bourrier, D. Ehrenreich +36
Comparison of cloud models for Brown Dwarfs
Ch. Helling, A. Ackerman, F. Allard +8
A comparison of chemistry and dust cloud formation in ultracool dwarf model atmospheres
Ch. Helling, A. Ackerman, F. Allard +8
Insight into atmospheres of extrasolar planets through plasma processes
Ch. Helling, I. Vorgul
MOVES II. Tuning in to the radio environment of HD189733b
R. D. Kavanagh, A. A. Vidotto, D. à Fionnagáin +7
The Impact of Stellar Model Spectra in Disk Detection
J. A. Sinclair, Ch. Helling, J. S. Greaves