Chromospheric CaII Emission in Nearby F, G, K, and M stars

Abstract

We present chromospheric CaII activity measurements, rotation periods and ages for ~1200 F-, G-, K-, and M- type main-sequence stars from ~18,000 archival spectra taken at Keck and Lick Observatories as a part of the California and Carnegie Planet Search Project. We have calibrated our chromospheric S values against the Mount Wilson chromospheric activity data. From these measurements we have calculated median activity levels and derived R'HK, stellar ages, and rotation periods for 1228 stars, ~1000 of which have no previously published S values. We also present precise time series of activity measurements for these stars.

62 pages, 7 figures, 1 table. Second (extremely long) table is available at http://astro.berkeley.edu/~jtwright/CaIIdata/tab1.tex Accepted by ApJS

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• Stellar activity and transits
• The CARMENES search for exoplanets around M dwarfs. Variability of the He I line at 10830 Å
• Fundamental stellar parameters for selected T-Tauri stars in the Chamaeleon and Rho Ophiuchus star-forming regions
• X-ray Activity from Different Types of Stars
• K2 Observations of 95 Vir: delta Scuti Pulsations in a Chromospherically Active Star
• Precise determination of fundamental parameters of six exoplanet host stars and their planets
• Detectability of Solar Rotation Period Across Various Wavelengths
• Radial velocity precision of ESPRESSO through the analysis of the solar twin HIP 11915
• On the lithium abundance of the visual binary components $\xi$ Boo A (G8V) and $\xi$ Boo B (K5V)
• Why the observed spin evolution of older-than-solar like stars might not require a dynamo mode change
• Homogeneous search for spot transits in Kepler and TESS photometry of K $-$ M-type main-sequence stars
• High-resolution spectropolarimetric of k Cet: A proxy for the young Sun
• Apache Point Observatory follow-up of ACcelerating Candidate ExopLanet host Stars (APO ACCELS): Ages for 166 Accelerating Stars in the Northern Hemisphere
• An investigation of the magnetic activity of HD 134319 based on TESS photometry and ground-based spectroscopy
• Magnetism and activity of planet hosting stars
• A Bcool spectropolarimetric survey of over 150 solar-type stars
• Confronting Substellar Theoretical Models with Stellar Ages
• Simulating starspot activity jitter for spectral types F--M: realistic estimates for a representative sample of known exoplanet hosts
• The SOL $\text{(Solar Origin and Life)}$ Project: Detailed characterization of candidates for the ZAMS and Subgiant stages
• HD 166620: Portrait of a Star Entering a Grand Magnetic Minimum
• An Hα Transit of HD 189733b to Assess Stellar Activity Across the Transit Chord Close to JWST Observations