Characterization of the radial velocity signal induced by rotation in late-type dwarfs [PDF]
, 2017 We investigate the activity induced signals related to rotation in late type stars (FGKM). We analyse the Ca II H&K, the H alpha and the radial velocity time-series of 55 stars using the spectra from the HARPS public database and the light-curves ...
A. Mascareño +3 more
semanticscholar +1 more source
A comprehensive radial velocity error budget for next generation Doppler spectrometers [PDF]
Astronomical Telescopes + Instrumentation, 2016 We describe a detailed radial velocity error budget for the NASA-NSF Extreme Precision Doppler Spectrometer instrument concept NEID (NN-explore Exoplanet Investigations with Doppler spectroscopy).
S. Halverson +16 more
semanticscholar +1 more source
Gaia Radial Velocity Spectrometer [PDF]
, 2018 19 pages, 20 figures.
Cropper, M +42 more
openaire +3 more sources
CEPHEID PULSATIONS FROM RADIAL VELOCITY MEASUREMENTS
Odessa Astronomical Publications, 2017 We discuss the results of our many-year program of Cepheid radial velocities concerning the Hertzsprung sequence in radial-velocity curves, double-mode Cepheids, the period-radius relation, binary Cepheids.
N. A. Gorynya, N. N. Samus
doaj +1 more source
Disentangling Time-series Spectra with Gaussian Processes: Applications to Radial Velocity Analysis [PDF]
, 2017 Measurements of radial velocity variations from the spectroscopic monitoring of stars and their companions are essential for a broad swath of astrophysics; these measurements provide access to the fundamental physical properties that dictate all phases ...
I. Czekala +6 more
semanticscholar +1 more source
The Death of Vulcan: NEID Reveals That the Planet Candidate Orbiting HD 26965 Is Stellar Activity
The Astronomical JournalWe revisit the long-studied radial velocity (RV) target HD 26965 using recent observations from the NASA-NSF “NEID” precision Doppler facility. Leveraging a suite of classical activity indicators, combined with line-by-line RV analyses, we demonstrate ...
Abigail Burrows +19 more
doaj +1 more source
The Joker: A Custom Monte Carlo Sampler for Binary-star and Exoplanet Radial Velocity Data [PDF]
, 2016 Given sparse or low-quality radial velocity measurements of a star, there are often many qualitatively different stellar or exoplanet companion orbit models that are consistent with the data.
A. Price-Whelan +3 more
semanticscholar +1 more source
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source
European Physical Journal C: Particles and Fields, 2019 The significance of the radial velocity effects on the leading-order gravitational frequency shift in some special cases was reported recently. This paper investigates the gravitational shift of frequency of light propagating in the equatorial plane of a
Guansheng He, Chaohong Pan, Wenbin Lin
doaj +1 more source
Investigating transcription factor dynamics in health and disease using FRAP
FEBS Letters, EarlyView.FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj +3 more
wiley +1 more source