Results 1 to 10 of about 55,600 (216)

Precise Radial Velocities and Radial Velocity Standards [PDF]

Symposium - International Astronomical Union, 1985
By imposing absorption lines of HF in stellar spectra we can measure changes in r.v. with a precision of ~10m/s from a single spectrum, provided stellar line profiles are not distorted by atmospheric motions. The precision of absolute radial velocities is currently limited to ~100m/s by knowledge of rest wavelengths.
G. A. H. Walker, J. Amor, S. Yang, B. Campbell   +3 more
openaire   +1 more source

The fundamental definition of “radial velocity” [PDF]

Astronomy & Astrophysics, 2003
19 pages, 1 figure.
Lindegren, Lennart, Dravins, Dainis
openaire   +2 more sources

On the Accuracy of Gaia Radial Velocities [PDF]

Open Astronomy, 2001
12 pages, 2 figures, 5 tables, in press in Baltic ...
Munari U., Agnolin P., Tomasella L.
openaire   +3 more sources

An Extreme-precision Radial-velocity Pipeline: First Radial Velocities from EXPRES [PDF]

The Astronomical Journal, 2020
Abstract The EXtreme-PREcision Spectrograph (EXPRES) is an environmentally stabilized, fiber-fed, R = 137,500, optical spectrograph. It was recently commissioned at the 4.3 m Lowell Discovery Telescope near Flagstaff, Arizona. The spectrograph was designed with a target radial-velocity (RV) precision of 30 cm s−1.
Ryan R. Petersburg, J. M. 冕 Joel Ong 王加, Lily L. Zhao, Ryan T. Blackman, John M. Brewer, Lars A. Buchhave, Samuel H. C. Cabot, Allen B. Davis, Colby A. Jurgenson, Christopher Leet, Tyler M. McCracken, David Sawyer, Mikhail Sharov, René Tronsgaard, Andrew E. Szymkowiak, Debra A. Fischer   +15 more
openaire   +3 more sources

PRECISION RADIAL VELOCITIES WITH CSHELL [PDF]

The Astrophysical Journal, 2011
31 pages, 3 figures, 2 tables, accepted for publication in ...
Crockett, Christopher J., Mahmud, Naved I., Prato, L., Johns-Krull, Christopher M., Jaffe, Daniel T., Beichman, Charles A.   +5 more
openaire   +3 more sources

COMMISSION 30: RADIAL VELOCITIES [PDF]

Proceedings of the International Astronomical Union, 2008
The past three-year period has seen steady efforts to collect large numbers of radial-velocity (RV) measurements, as well as important applications of radial velocities to astrophysics. Improvements in precision continue to be driven largely by exoplanet research.
Stephane Udry, Guillermo Torres, Birgitta Nordström, Francis C. Fekel, Kenneth C. Freeman, Elena V. Glushkova, Geoffrey W. Marcy, Birgitta Nordström, Robert D. Mathieu, Dimitri Pourbaix, Catherine Turon, Tomaz Zwitter   +11 more
openaire   +7 more sources

Gaia Radial Velocity Spectrometer [PDF]

, 2018
19 pages, 20 figures.
Cropper, M, Katz, D, Sartoretti, P, Prusti, T, de Bruijne, JHJ, Chassat, F, Charvet, P, Boyadjian, J, Perryman, M, Sarri, G, Gare, P, Erdmann, M, Munari, U, Zwitter, T, Wilkinson, M, Arenou, F, Vallenari, A, Gomez, A, Panuzzo, P, Seabroke, G, Allende Prieto, C, Benson, K, Marchal, O, Huckle, H, Smith, M, Dolding, C, Janssen, K, Viala, Y, Blomme, R, Baker, S, Boudreault, S, Crifo, F, Soubiran, C, Fremat, Y, Jasniewicz, G, Guerrier, A, Guy, LP, Turon, C, Jean-Antoine-Piccolo, A, Thevenin, F, David, M, Gosset, E, Damerdji, Y   +42 more
openaire   +3 more sources

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

FEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas, Porter L. Tomsick, Alicia M. Pickrell, Paul D. Morton   +3 more
wiley   +1 more source

Modulation of Homer1 EVH1 domain internal dynamics by putative autism‐associated mutations

FEBS Letters, EarlyView.
The putative autism‐associated M65I and S97L variants of the EVH1 domain of the postsynaptic scaffold protein Homer1 do not exhibit substantial changes in their overall structure or partner binding. Both of them, but especially the M65I variant, show altered internal dynamics relative to the wild‐type domain on the μs‐ms timescale, indicated by the ...
Fanni Farkas, Brigitta Maruzs, Zsófia E. Kálmán, Tomas Klumpler, Gyula Batta, Bálint Péterfia, Zoltán Gáspári   +6 more
wiley   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source