Results 31 to 40 of about 582,844 (265)
Line bisectors and radial velocity jitter from SARG spectra [PDF]
Astron.Astrophys. 442 (2005) 775-784, 2005 We present an analysis of spectral line bisector variations for a few stars observed in the SARG high precision radial velocity planet survey, and discuss their relationship with differential radial velocities. The spectra we consider are the same used for determining radial velocities.
arxiv +1 more source
Modeling Stellar Oscillations and Granulation in Radial Velocity Time Series: A Fourier-based Method [PDF]
arXiv, 2022 Tens of thousands of solar-like oscillating stars have been observed by space missions. Their photometric variability in the Fourier domain can be parameterized by a sum of two super-Lorentizian functions for granulation and a Gaussian-shaped power excess for oscillation.
arxiv
WIYN Open Cluster Study. XXXVIII. Stellar Radial Velocities in the Young Open Cluster M35 (NGC 2168)
, 2009 We present 5201 radial-velocity measurements of 1144 stars, as part of an ongoing study of the young (150 Myr) open cluster M35 (NGC 2168). We have observed M35 since 1997, using the Hydra Multi-Object Spectrograph on the WIYN 3.5m telescope. Our stellar
Aaron M. Geller +27 more
core +1 more source
AAPM‐RSS Medical Physics Practice Guideline 9.b: SRS‐SBRT
Journal of Applied Clinical Medical Physics, EarlyView.Abstract The purpose of this Medical Physics Practice Guideline (MPPG) is to describe the minimum level of medical physics support deemed prudent for the practice of linear‐accelerator, photon‐based (linac) stereotactic radiosurgery (SRS), and stereotactic body radiation therapy (SBRT) services.
Eileen Cirino +9 more
wiley +1 more source
Radial Velocities of Three Poorly Studied Clusters and the Kinematics of Open Clusters [PDF]
AJ, 147, 69 (2014), 2014 We present radial velocities for stars in the field of the open star clusters Berkeley 44, Berkeley 81, and NGC 6802 from spectra obtained using the Wisconsin-Indiana-Yale-NOAO (WIYN) 3.5 m telescope. These clusters are of intermediate age (1-3 Gyr), located within the solar Galactocentric radius, and have no previous radial velocity measurements.
arxiv +1 more source
, 2004 We present the results of a radial velocity survey of a sample of Hyades stars, and discuss the effects of stellar activity on radial velocity measurements. The level of radial velocity scatter due to rotational modulation of stellar surface features for
Allende Prieto C. +5 more
core +2 more sources
Photometry as a proxy for stellar activity in radial velocity analyses
, 2020 Stellar activity remains a limiting factor in measuring precise planet parameters from radial velocity spectroscopy, not least in the search for Earth mass planets orbiting in the habitable zones of Sun-like stars.
Crossfield, Ian J. M. +1 more
core +1 more source
Multi‐institutional study on image quality for a novel CBCT solution on O‐ring linac
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Introduction This work presents a multi‐institutional study on image quality provided by a novel cone beam computed tomography (CBCT). The main goal is to investigate the consistency of imaging performance across multiple institutions.
Luis Agulles‐Pedrós +11 more
wiley +1 more source
, 2015 We investigate the nature of the long-period radial velocity variations in Alpha Tau first reported over 20 years ago. We analyzed precise stellar radial velocity measurements for Alpha Tau spanning over 30 years.
Cochran, W. D. +16 more
core +1 more source
Starspot-induced optical and infrared radial velocity variability in T Tauri star Hubble 4 [PDF]
, 2011 We report optical (6150 Ang) and K-band (2.3 micron) radial velocities obtained over two years for the pre-main sequence weak-lined T Tauri star Hubble I 4.
Bean +35 more
core +2 more sources