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7 papers · 1 filter
A sensitivity analysis of the WFCAM Transit Survey for short-period giant planets around M dwarfs
Gábor Kovács, S. Hodgkin, B. Sipőcz +11
The WFCAM Transit Survey (WTS) is a near-infrared transit survey running on the United Kingdom Infrared Telescope (UKIRT), designed to discover planets around M dwarfs. The WTS act…
The Lyman alpha Reference Sample: Extended Lyman alpha Halos Produced at Low Dust Content
Matthew Hayes, Göran Östlin, Daniel Schaerer +14
We report on new imaging observations of the Lyman alpha emission line (Lya), performed with the Hubble Space Telescope, that comprise the backbone of the Lyman alpha Reference Sam…
Proper motions of young stars in Chamaeleon. I. A Virtual Observatory study of spectroscopically confirmed members
Belén López Martí, Francisco Jiménez-Esteban, Amelia Bayo +3
(abridged) We want to provide further evidence of the origin of the proposed stellar members of Chamaeleon and to identify interlopers from the foreground εCha and ηCha association…
Spontaneous Mirror Symmetry Breaking in the Limited Enantioselective Autocatalysis Model: Abyssal Hydrothermal Vents as Scenario for the Emergence of Chirality in Prebiotic Chemistry
Josep M. Ribó, Joaquim Crusats, Zoubir El-Hachemi +3
The emergence of chirality in enantioselective autocatalysis for compounds unable to transform according to the Frank-like reaction network is discussed with respect to the controv…
Low velocity shocks: signatures of turbulent dissipation in diffuse irradiated gas
Pierre Lesaffre, Guillaume Pineau des Forêts, Benjamin Godard +3
We examine the chemical and emission properties of mildly irradiated (G0=1) magnetised shocks in diffuse media (nH=10^2 to 10^4 /cm3) at low to moderate velocities (from 3 to 40 km…
The chemistry of ions in the Orion Bar I. - CH+, SH+, and CF+: The effect of high electron density and vibrationally excited H2 in a warm PDR surface
Z. Nagy, F. F. S. Van der Tak, V. Ossenkopf +8
The abundances of interstellar CH+ and SH+ are not well understood as their most likely formation channels are highly endothermic. Using data from Herschel, we study the formation…