scholarly journals A radial velocity error budget for single-mode Doppler spectrographs

2018 ◽  
Author(s):  
Andrew Bechter ◽  
Eric Bechter ◽  
Justin R. Crepp ◽  
Jonathan Crass ◽  
David King
Keyword(s):  
Radial Velocity ◽  
Single Mode ◽  
Error Budget ◽  
Velocity Error

The precision radial velocity error budget for the Gemini High-resolution Optical SpecTrograph (GHOST)

2016 ◽  
Author(s):  
Michael J. Ireland ◽  
Étienne Artigau ◽  
Greg Burley ◽  
Michael Edgar ◽  
Steve Margheim ◽  
...  
Keyword(s):  
High Resolution ◽  
Radial Velocity ◽  
Error Budget ◽  
Velocity Error

scholarly journals A comprehensive radial velocity error budget for next generation Doppler spectrometers

2016 ◽  
Author(s):  
Samuel Halverson ◽  
Ryan Terrien ◽  
Suvrath Mahadevan ◽  
Arpita Roy ◽  
Chad Bender ◽  
...  
Keyword(s):  
Radial Velocity ◽  
Next Generation ◽  
Error Budget ◽  
Velocity Error

The Impact of Wavelength Step on Radial Velocity Error

2012 ◽  
Vol 239-240 ◽  
pp. 794-797
Author(s):  
Fang Zuo ◽  
A Li Luo
Keyword(s):  
Radial Velocity ◽  
Measurement Method ◽  
Cross Correlation ◽  
Stellar Spectra ◽  
Velocity Error ◽  
Target Spectrum ◽  
Different Types ◽  
The Cross ◽  
The Impact ◽  
Internal Error

Radial velocity (RV) of a star caused by Doppler shift could be easily measured by cross-correlated it’s spectrum with a serial template. Generally, the RV error of a spectrum always is given by the widths of the cross-correlation function of the target spectrum and related template spectrum. RV error comes from many factors, causing from instruments, observation weather, etc.. In this paper, simulation with different types of stellar spectra, which has different temperature, is implemented. The results show that there is an internal error which is not generated by the calculation steps for a given resolution step, for example, 5km/s error exists in the cross-correlation based RV measurement method for resolution about R~2000. The simulation also proves that this error could not be avoided for any type of stars.

scholarly journals Erratum: Photometric and radial-velocity time-series of RR Lyrae stars in M3: analysis of single-mode variables

2018 ◽  
Vol 481 (2) ◽  
pp. 2778-2778
Author(s):  
J Jurcsik ◽  
P Smitola ◽  
G Hajdu ◽  
Á Sódor ◽  
J Nuspl ◽  
...  
Keyword(s):  
Time Series ◽  
Radial Velocity ◽  
Single Mode ◽  
Rr Lyrae Stars ◽  
Rr Lyrae ◽  
Lyrae Stars

scholarly journals Photometric and radial-velocity time series of RR Lyrae stars in M3: analysis of single-mode variables

2017 ◽  
Vol 468 (2) ◽  
pp. 1317-1337 ◽  
Author(s):  
J. Jurcsik ◽  
P. Smitola ◽  
G. Hajdu ◽  
Á. Sódor ◽  
J. Nuspl ◽  
...  
Keyword(s):  
Time Series ◽  
Radial Velocity ◽  
Single Mode ◽  
Rr Lyrae Stars ◽  
Rr Lyrae ◽  
Lyrae Stars

The Radial Velocity Measurement and Error Analysis for Low Resolution Spectra

2011 ◽  
Vol 301-303 ◽  
pp. 175-181
Author(s):  
Bin He ◽  
Fang Zuo ◽  
A Li Luo ◽  
Yin Bi Li
Keyword(s):  
Radial Velocity ◽  
Cross Correlation ◽  
Paper Analysis ◽  
Calibration Error ◽  
Velocity Error ◽  
Target Spectrum ◽  
Different Types ◽  
Different Temperatures ◽  
Radial Velocity Measurement ◽  
Instrument Observation

Radial velocity error of the spectra always be given by the widths of the cross-correlation function of the target spectrum and template spectrum. Radial velocity error affected by many inevitable factors, caused by instrument, observation weather, etc.. Another important error comes from calibration, which should be reduced as much as possible. This paper analysis the error based on different temperatures for different types of spectral. The effect of the calibration error to the radial velocity error is also presented.

scholarly journals “MODAL NOISE” IN SINGLE-MODE FIBERS: A CAUTIONARY NOTE FOR HIGH PRECISION RADIAL VELOCITY INSTRUMENTS

2015 ◽  
Vol 814 (2) ◽  
pp. L22 ◽  
Author(s):  
Samuel Halverson ◽  
Arpita Roy ◽  
Suvrath Mahadevan ◽  
Christian Schwab
Keyword(s):  
Radial Velocity ◽  
High Precision ◽  
Single Mode ◽  
Cautionary Note ◽  
Modal Noise

Spectroscopic Observations of Visual Double Stars

1965 ◽  
Vol 5 ◽  
pp. 109-111
Author(s):  
Frederick R. West
Keyword(s):  
Radial Velocity ◽  
High Dispersion ◽  
Velocity Difference ◽  
Spectrograph Slit ◽  
Spectroscopic Observations ◽  
Double Stars ◽  
Visual Double Stars ◽  
Relative Orbit ◽  
Two Component ◽  
Star Images

There are certain visual double stars which, when close to a node of their relative orbit, should have enough radial velocity difference (10-20 km/s) that the spectra of the two component stars will appear resolved on high-dispersion spectrograms (5 Å/mm or less) obtainable by use of modern coudé and solar spectrographs on bright stars. Both star images are then recorded simultaneously on the spectrograph slit, so that two stellar components will appear on each spectrogram.

On the Configuration of the Magnetic Field of β CrB

1976 ◽  
Vol 32 ◽  
pp. 613-622
Author(s):  
I.A. Aslanov ◽  
Yu.S. Rustamov
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Radial Velocity ◽  
Magnetic Field Strength ◽  
Complex Shape ◽  
Rotation Period ◽  
Field Variation ◽  
Magnetic Field Variation ◽  
Secular Variations ◽  
The Magnetic Field

SummaryMeasurements of the radial velocities and magnetic field strength of β CrB were carried out. It is shown that there is a variability with the rotation period different for various elements. The curve of the magnetic field variation measured from lines of 5 different elements: FeI, CrI, CrII, TiII, ScII and CaI has a complex shape specific for each element. This may be due to the presence of magnetic spots on the stellar surface. A comparison with the radial velocity curves suggests the presence of a least 4 spots of Ti and Cr coinciding with magnetic spots. A change of the magnetic field with optical depth is shown. The curve of the Heffvariation with the rotation period is given. A possibility of secular variations of the magnetic field is shown.

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