Phase shifts between RVs and stellar variability indicators

Annelies Mortier

doi:10.5281/zenodo.7409757

Phase shifts between RVs and stellar variability indicators

Annelies Mortier

Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Abstract

Detailed characterisation of small exoplanets is currently hindered by radial velocity signals arising from the star's intrinsic variability. In extracting the precise radial velocities, we can also extract spectral line profile information. These are useful indicators for the stellar variability processes. However, for them to be optimally used in a global model, it is essential to bear in mind that these indicators are not directly correlated with the radial velocities, but rather shifted by several days. In this talk I will give an overview of this effect as studied on Solar data from the HARPS-N spectrograph, which has been continuously gathering data for over six years.

Original language	English
Title of host publication	The 21st Cambridge workshop on Cool Stars, Stellar Systems, and the Sun
Subtitle of host publication	Proceedings from the 21st Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, held in Toulouse, France from 04 – 08 July 2022
Editors	Allan Sacha Brun, Jérôme Bouvier, Pascal Petit
Publisher	Zenodo
DOIs	https://doi.org/10.5281/zenodo.7409757
Publication status	Published - 7 Dec 2022
Event	The 21st Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS21), held 4-8 July, 2022 in Toulouse, France - Toulouse, Toulouse, France Duration: 4 Jul 2022 → 8 Jul 2022

Conference

Conference	The 21st Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS21), held 4-8 July, 2022 in Toulouse, France
Abbreviated title	Cool Stars
Country/Territory	France
City	Toulouse
Period	4/07/22 → 8/07/22

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MortierA2022PhaseFinal published version, 1.58 MBLicence: Creative Commons: Attribution (CC BY)

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Mortier, A. (2022). Phase shifts between RVs and stellar variability indicators. In A. S. Brun, J. Bouvier, & P. Petit (Eds.), The 21st Cambridge workshop on Cool Stars, Stellar Systems, and the Sun: Proceedings from the 21st Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, held in Toulouse, France from 04 – 08 July 2022 Zenodo. https://doi.org/10.5281/zenodo.7409757

Mortier, Annelies. / Phase shifts between RVs and stellar variability indicators. The 21st Cambridge workshop on Cool Stars, Stellar Systems, and the Sun: Proceedings from the 21st Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, held in Toulouse, France from 04 – 08 July 2022. editor / Allan Sacha Brun ; Jérôme Bouvier ; Pascal Petit. Zenodo, 2022.

@inproceedings{972e7009c6214b2787eabdebf0f2016c,

title = "Phase shifts between RVs and stellar variability indicators",

abstract = "Detailed characterisation of small exoplanets is currently hindered by radial velocity signals arising from the star's intrinsic variability. In extracting the precise radial velocities, we can also extract spectral line profile information. These are useful indicators for the stellar variability processes. However, for them to be optimally used in a global model, it is essential to bear in mind that these indicators are not directly correlated with the radial velocities, but rather shifted by several days. In this talk I will give an overview of this effect as studied on Solar data from the HARPS-N spectrograph, which has been continuously gathering data for over six years.",

author = "Annelies Mortier",

year = "2022",

month = dec,

day = "7",

doi = "10.5281/zenodo.7409757",

language = "English",

editor = "Brun, {Allan Sacha} and J{\'e}r{\^o}me Bouvier and Pascal Petit",

booktitle = "The 21st Cambridge workshop on Cool Stars, Stellar Systems, and the Sun",

publisher = "Zenodo",

note = "The 21st Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS21), held 4-8 July, 2022 in Toulouse, France, Cool Stars ; Conference date: 04-07-2022 Through 08-07-2022",

}

Mortier, A 2022, Phase shifts between RVs and stellar variability indicators. in AS Brun, J Bouvier & P Petit (eds), The 21st Cambridge workshop on Cool Stars, Stellar Systems, and the Sun: Proceedings from the 21st Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, held in Toulouse, France from 04 – 08 July 2022. Zenodo, The 21st Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS21), held 4-8 July, 2022 in Toulouse, France, Toulouse, France, 4/07/22. https://doi.org/10.5281/zenodo.7409757

Phase shifts between RVs and stellar variability indicators. / Mortier, Annelies.
The 21st Cambridge workshop on Cool Stars, Stellar Systems, and the Sun: Proceedings from the 21st Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, held in Toulouse, France from 04 – 08 July 2022. ed. / Allan Sacha Brun; Jérôme Bouvier; Pascal Petit. Zenodo, 2022.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Phase shifts between RVs and stellar variability indicators

AU - Mortier, Annelies

PY - 2022/12/7

Y1 - 2022/12/7

N2 - Detailed characterisation of small exoplanets is currently hindered by radial velocity signals arising from the star's intrinsic variability. In extracting the precise radial velocities, we can also extract spectral line profile information. These are useful indicators for the stellar variability processes. However, for them to be optimally used in a global model, it is essential to bear in mind that these indicators are not directly correlated with the radial velocities, but rather shifted by several days. In this talk I will give an overview of this effect as studied on Solar data from the HARPS-N spectrograph, which has been continuously gathering data for over six years.

AB - Detailed characterisation of small exoplanets is currently hindered by radial velocity signals arising from the star's intrinsic variability. In extracting the precise radial velocities, we can also extract spectral line profile information. These are useful indicators for the stellar variability processes. However, for them to be optimally used in a global model, it is essential to bear in mind that these indicators are not directly correlated with the radial velocities, but rather shifted by several days. In this talk I will give an overview of this effect as studied on Solar data from the HARPS-N spectrograph, which has been continuously gathering data for over six years.

U2 - 10.5281/zenodo.7409757

DO - 10.5281/zenodo.7409757

M3 - Conference contribution

BT - The 21st Cambridge workshop on Cool Stars, Stellar Systems, and the Sun

A2 - Brun, Allan Sacha

A2 - Bouvier, Jérôme

A2 - Petit, Pascal

PB - Zenodo

T2 - The 21st Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS21), held 4-8 July, 2022 in Toulouse, France

Y2 - 4 July 2022 through 8 July 2022

ER -

Phase shifts between RVs and stellar variability indicators

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