Context. The detection of chromospheric activity cycles in solar-Analogue and twin stars can be used to place the solar cycle in a wider context. However, relatively few of these stars with activity cycles have been detected. It is well known that the cores of the Ca II H&K lines are modulated by stellar activity. The behaviour of the Balmer and other optical lines with stellar activity is not yet completely understood. Aims. We search for variations in the Ca II H&K, Balmer, and Fe II lines modulated by stellar activity. In particular, we apply a novel strategy to detect possible shape variations in the Hα line. Methods. We analysed activity signatures in HD 38858 using HARPS and CASLEO spectra obtained between 2003 and 2017. We calculated...
Stellar activity influences radial velocity (RV) measurements and can also mimic the presence of orb...
We present the results of 10 yr of complementary spectroscopic and photometric observations of the s...
We present 14 years of contemporaneous photometric and spectroscopic observations of 28 solar analog...
Context. Most stellar activity cycles similar to that found in the Sun have been detected by using t...
We perform, for the first time, a detailed long-term activity study of the binary system ζ Ret. We u...
In order to detect stellar activity cycles and study possiblestar-planet interactions (SPIs), we hav...
Context. Searching for extrasolar planets through radial velocity measurements relies on the stabili...
The outer convective envelopes of late-type stars are believed to support turbulent dynamos that are...
Aims: Stellar activity is the ultimate source of radial-velocity (hereinafter RV) noise in the searc...
Context. The Sun and solar-like stars undergo activity cycles for which the underlying mechanisms ar...
Precise, adequately high-cadence, long-term records of spectral variability at different temporal sc...
Context. Understanding stellar activity in solar-type stars is crucial for the physics of stellar at...
Stellar activity can be a source of radial velocity (RV) noise and can reproduce periodic RV variati...
AFL acknowledges support by INAF/Frontiera through the "Progetti Premiali" funding scheme of the Ita...
This is an Open Access article, published by EDP Sciences, under the terms of the Creative Commons A...
Stellar activity influences radial velocity (RV) measurements and can also mimic the presence of orb...
We present the results of 10 yr of complementary spectroscopic and photometric observations of the s...
We present 14 years of contemporaneous photometric and spectroscopic observations of 28 solar analog...
Context. Most stellar activity cycles similar to that found in the Sun have been detected by using t...
We perform, for the first time, a detailed long-term activity study of the binary system ζ Ret. We u...
In order to detect stellar activity cycles and study possiblestar-planet interactions (SPIs), we hav...
Context. Searching for extrasolar planets through radial velocity measurements relies on the stabili...
The outer convective envelopes of late-type stars are believed to support turbulent dynamos that are...
Aims: Stellar activity is the ultimate source of radial-velocity (hereinafter RV) noise in the searc...
Context. The Sun and solar-like stars undergo activity cycles for which the underlying mechanisms ar...
Precise, adequately high-cadence, long-term records of spectral variability at different temporal sc...
Context. Understanding stellar activity in solar-type stars is crucial for the physics of stellar at...
Stellar activity can be a source of radial velocity (RV) noise and can reproduce periodic RV variati...
AFL acknowledges support by INAF/Frontiera through the "Progetti Premiali" funding scheme of the Ita...
This is an Open Access article, published by EDP Sciences, under the terms of the Creative Commons A...
Stellar activity influences radial velocity (RV) measurements and can also mimic the presence of orb...
We present the results of 10 yr of complementary spectroscopic and photometric observations of the s...
We present 14 years of contemporaneous photometric and spectroscopic observations of 28 solar analog...