Cover Image

Stellar surface information from the Ca II H&K lines -- II. Defining better activity proxies

Fuente: arXiv

Saved in:

Bibliographic Details
Main Authors:	Cretignier, M., Hara, N. C., Pietrow, A. G. M., Zhao, Y., Yu, H., Dumusque, X., Sozzetti, A., Lovis, C., Aigrain, S.
Format:	Preprint
Published:	2024
Subjects:	Solar and Stellar Astrophysics Earth and Planetary Astrophysics
Online Access:	Acceder al recurso
Tags:	Add Tag No Tags, Be the first to tag this record!

Similar Items

Solar Flux Atlases: The new HARPS-N Quiet Sun Benchmark and Ca II H & K Lines Continuum Normalisation
by: Hanassi-Savari, F., et al.
Published: (2025)

Precise and efficient modeling of stellar-activity-affected solar spectra using SOAP-GPU
by: Zhao, Yinan, et al.
Published: (2024)

A Gaussian process model for stellar activity in 2-D line profile time-series
by: Yu, Haochuan, et al.
Published: (2024)

Investigating stellar activity through eight years of Sun-as-a-star observations
by: Klein, Baptiste, et al.
Published: (2024)

The RoPES project with HARPS and HARPS-N II. A third planet in the multi-planet system HD 176986
by: Nari, N., et al.
Published: (2026)

Using Doppler Imaging to model stellar activity and search for planets around Sun-like stars
by: Klein, Baptiste, et al.
Published: (2025)

Correlations between Ca II H&K Emission and the Gaia M dwarf Gap
by: Boudreaux, Emily M., et al.
Published: (2024)

Granulation on a quiet K dwarf: HD 166620 I. Spectral signatures as a function of line-formation temperature
by: John, Ancy Anna, et al.
Published: (2025)

Measuring the Suns radial velocity variability due to supergranulation over a magnetic cycle
by: O'Sullivan, Niamh K., et al.
Published: (2025)

Center-to-limb variation of spectral lines and their effect on full-disk observations
by: Pietrow, Alexander G. M., et al.
Published: (2023)

Modelling stellar variability in archival HARPS data: I -- Rotation and activity properties with multi-dimensional Gaussian Processes
by: Yu, Haochuan, et al.
Published: (2024)

Stellar-activity analysis of the nearby M dwarf GJ 526. Multi-dimensional Gaussian-process modelling of RV, FWHM and S-index
by: Stefanov, A. K., et al.
Published: (2025)

In-depth characterization of the Kepler-10 three-planet system with HARPS-N radial velocities and Kepler transit timing variations
by: Bonomo, A. S., et al.
Published: (2025)

Using the Ca II lines in T Tauri stars to infer the abundance of refractory elements in the innermost disk regions
by: Micolta, Marbely, et al.
Published: (2024)

The Mean Longitudinal Magnetic Field and its Uses in Radial-Velocity Surveys
by: Rescigno, F., et al.
Published: (2024)

Characterisation of the stellar activity of M dwarfs. II. Relationship between Ca, H$α$, and Na chromospheric emissions
by: Meunier, Nadège, et al.
Published: (2024)

Revisiting the SATIRE-S irradiance reconstruction: Heritage of Mt Wilson magnetograms and Ca II K observations
by: Chatzistergos, Theodosios, et al.
Published: (2025)

Radial velocity homogeneous analysis of M dwarfs observed with HARPS. II. Detection limits and planetary occurrence statistics
by: Mignon, L., et al.
Published: (2025)

A correlation between accretion and outflow rates for Class II Young Stellar Objects with full and transition disks
by: Rota, A. A., et al.
Published: (2025)

Analysis of the public HARPS/ESO spectroscopic archive -- Ca II H&K time series for the HARPS radial velocity database
by: Perdelwitz, V., et al.
Published: (2023)

On the center-to-limb variations of the He I 10 830 Å triplet
by: Pietrow, A. G. M., et al.
Published: (2025)

Quantifying spectroscopic Ca II exocomet transit occurrence in two decades of HARPS data
by: Bendahan-West, Raphaël, et al.
Published: (2024)

Young M dwarfs flare activity model: Towards better exoplanetary atmospheric characterisation
by: Mamonova, E., et al.
Published: (2025)

The ANTARESS workflow I. Optimal extraction of spatially resolved stellar spectra with high-resolution transit spectroscopy
by: Bourrier, V., et al.
Published: (2024)

CaII and H$α$ flaring M dwarfs detected with multi-filter photometry
by: Mas-Buitrago, P., et al.
Published: (2025)

An updated catalog of HIRES/Keck radial velocity measurements. Including Ca II H&K measurements
by: Teklu, Jerusalem T., et al.
Published: (2025)

The GAPS programme at TNG LXXI. A sub-Neptune suitable for atmospheric characterization in a multiplanet and mutually inclined system orbiting the bright K dwarf TOI-5789 (HIP 99452)
by: Bonomo, A. S., et al.
Published: (2025)

Evidence for Primordial Alignment II: Insights from Stellar Obliquity Measurements for Hot Jupiters in Compact Multiplanet Systems
by: Radzom, Brandon Thomas, et al.
Published: (2025)

Solar variability in the Mg II h and k lines
by: Sowmya, K., et al.
Published: (2025)

A Decade of Solar High-Fidelity Spectroscopy and Precise Radial Velocities from HARPS-N
by: Dumusque, X., et al.
Published: (2025)

Origin of Ca II emission around polluted white dwarfs
by: Fröhlich, Viktória, et al.
Published: (2024)

Seven white dwarfs with circumstellar gas discs II: Tracing the composition of exoplanetary building blocks
by: Rogers, L. K., et al.
Published: (2024)

A low-mass sub-Neptune planet transiting the bright active star HD 73344
by: Sulis, S., et al.
Published: (2024)

Unsigned magnetic flux proxy from solar optical intensity spectra
by: Lienhard, F., et al.
Published: (2023)

Cold Jupiters and small planets: Friends, foes, or indifferent? A search for correlations with the largest exoplanet samples
by: Bonomo, A. S., et al.
Published: (2025)

Search for Stellar Companions of Exoplanet Host Stars with AstraLux/CAHA 2.2 m
by: Schlagenhauf, S., et al.
Published: (2024)

Modelling stochastic and quasi-periodic behaviour in stellar time-series: Gaussian process regression versus power-spectrum fitting
by: O'Sullivan, Niamh K., et al.
Published: (2024)

TOI-837b is a Young Saturn-sized Exoplanet with a Massive 70 $M_{\oplus}$ Core
by: Barragán, Oscar, et al.
Published: (2024)

The compact multi-planet system GJ 9827 revisited with ESPRESSO
by: Passegger, V. M., et al.
Published: (2024)

A sub-Earth-mass planet orbiting Barnard's star
by: Hernandez, J. I. Gonzalez, et al.
Published: (2024)