Velocity Jitter Benchmark Observations of the Sun blueplanetsde Ansgar Reiners Understanding Radial Velocity Jitter Benchmark Observations of the Sun blueplanetsde ID: 815198
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Slide1
Ansgar Reiners
Understanding Radial
Velocity Jitter:Benchmark Observations of the Sun
blueplanets.de
Slide2Ansgar Reiners
Understanding Radial
Velocity Jitter:Benchmark Observations of the Sun
blueplanets.de
the
Sun
as
a light
source
Slide3The Sun
with SDO/HMI
intensityRVsmagnetogram
Slide43D MHD line profiles
Beeck
et al., 2015
Slide5The Sun
with
SDO/HMIintensity
RVssynth. local line profile
Slide650cm
Cassegrain
Vacuum Vertical Telescope
© Ulf Seemann
FTS
with
R
up
to 106
Slide7Slide8Solar
eclipse March 20, 2015
Slide9Slide10model
with
3D
line
profiles
model
with
SDO/HMI RVs
bary
model
Slide11Benchmarking with the Sun
λ
-
accurate atlas of the solar spectrumobtain
FTS spectra with LFC λ-calibrationadvantage: in FTS: small
wavelength region defines
λ for
the entire
spectrum
⇒
absolute λ accuracy at every
pixelobserve local profiles on the SunImage of the Sun observed at IAGred: examples of fibre size
taccor
1 GHz LFC
Slide12Reaching out
Line profiles and
limb darkening: Transit studiesStarspots and active starsStellar convection
and RV detectionNew Instrumentation
blueplanets.de
Slide13Observing
the Sun as a Star September 10-13, 2018Historic ObservatoryGöttingen
Would we find the solar system if we saw it?
Slide14Observing
the Sun as a Star Would we find the solar system if we saw it?
Invited Speakers
Drake DemingNadège MeunierSteve SaarHeather CeglaSandra JeffersAlexander ShapiroFabienne
BastienNuccio LanzaDavid PhillipsTilo SteinmetzPhilipp HukeArtie
HatzesEric Ford
SOCAndrew CameronDainis
DravinsXavier DumusqueDavid
Latham (
co-Chair)Raphaëlle HaywoodNatasha KrivovaAnne-Marie LagrangeAnsgar Reiners
(co-Chair)Wolfgang Schmidt
Slide15Local
line profiles are key to the problem
model
observation
Slide16