Results 71 to 80 of about 2,439,305 (313)
Design and Commissioning of an Iodine Cell for the ESPRESSO Spectrograph
The Astronomical JournalHigh-resolution echelle spectrographs remain the backbone of precision Doppler radial velocity (RV) programs, detecting almost all known exoplanets within 50 pc. Precision Doppler RV spectrographs have traditionally fallen into two camps.
Gillian Nave, R. Paul Butler
doaj +1 more source
Radial-velocity fitting challenge - II. First results of the analysis of the data set [PDF]
, 2016 This document is the Accepted Manuscript of the following article: X. Dumusque, et al, 'Radial-velocity fitting challenge II. First results of the analysis of the data set', Astronomy & Astrophysics, Vol.
X. Dumusque +24 more
semanticscholar +1 more source
Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments
FEBS Open Bio, EarlyView.Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley +1 more source
Simulations for Planning Next-generation Exoplanet Radial Velocity Surveys
The Astronomical Journal, 2023 Future direct imaging missions similar to the HabEx and LUVOIR mission concepts aim to catalog and characterize Earth-mass analogs around nearby stars.
Patrick D Newman +8 more
doaj +1 more source
Radial Velocity Planet Detection Biases at the Stellar Rotational Period [PDF]
, 2016 Future generations of precise radial velocity (RV) surveys aim to achieve sensitivity sufficient to detect Earth mass planets orbiting in their stars’ habitable zones.
A. Vanderburg +5 more
semanticscholar +1 more source
Commission 30: Radial Velocities: (Vitesses Radiales) [PDF]
Transactions of the International Astronomical Union, 2000 Commission 30 has 120 members in 28 countries who are active in the area of radial velocities. During the past triennium 11 new members have joined the commission. The work of the commission covers a wide range of topics all of which concern the application of the Doppler effect to astronomical objects, including galaxies and the interstellar medium as
J.B. Hearnshaw +9 more
openaire +2 more sources
FEBS Open Bio, EarlyView.Biophysical characterisation shows that NanX, a membrane transport protein from the major facilitator superfamily (MFS), forms both monomers and dimers after purification. AlphaFold modelling and substrate docking provide information on residues likely involved in substrate recognition for NanX and another MFS member, NanT.
Michael C. Newton‐Vesty +13 more
wiley +1 more source
VARIATIONS OF THE β CEPHEI Hα LINE PARAMETERS IN 1993 - 1998.
Odessa Astronomical Publications, 2017 We use high-dispersion CCD spectrograms obtained in 1993 - 1998 to study parameter variations of the absorption and emission components Hα line of the star β Cephei. We show that radial velocity of the emission component does not depend on star pulsation
E. A. Panko, A. E. Tarasov
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Radial Velocity Fitting Challenge. I. Simulating the data set including realistic stellar radial-velocity signals [PDF]
, 2016 Stellar signals are the main limitation for precise radial-velocity (RV) measurements. These signals arise from the photosphere of the stars. The m/s perturbation created by these signals prevents the detection and mass characterization of small-mass ...
X. Dumusque
semanticscholar +1 more source
FEBS Open Bio, EarlyView.In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey +4 more
wiley +1 more source