activity
20122025
most citedSpectrum radial velocity analyser (SERVAL). High-precision radial velocities and two alternative spectral indicators

469 citations · 4.8k across the 86 of their papers we have counts for

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9 papers · 1 filter

astro-ph.SR2022★ 19 cited

The CARMENES search for exoplanets around M dwarfs. Variability on long timescales as seen in chromospheric indicators

B. Fuhrmeister, S. Czesla, V. Perdelwitz +19

It is clearly established that the Sun has an 11-year cycle that is caused by its internal magnetic field. This cycle is also observed in a sample of M dwarfs. In the framework of…

astro-ph.EP2022★ 36 cited

The CARMENES search for exoplanets around M dwarfs: Stable radial-velocity variations at the rotation period of AD~Leonis -- A test case study of current limitations to treating stellar activity

D. Kossakowski, M. Kürster, Th. Henning +34

Context: A challenge with radial-velocity (RV) data is disentangling the origin of signals either due to a planetary companion or to stellar activity. In fact, the existence of a p…

astro-ph.EP2022★ 47 cited

A detailed analysis of the Gl 486 planetary system

J. A. Caballero, E. Gonzalez-Alvarez, M. Brady +64

The Gl 486 system consists of a very nearby, relatively bright, weakly active M3.5 V star at just 8 pc with a warm transiting rocky planet of about 1.3 R_Terra and 3.0 M_Terra that…

astro-ph.SR2022★ 19 cited

The CARMENES search for exoplanets around M dwarfs. Rotational variation in activity indicators of Ross 318, YZ CMi, TYC 3529-1437-1, and EV Lac

P. Schöfer, S. V. Jeffers, A. Reiners +22

The CARMENES instrument is searching for periodic radial-velocity (RV) variations of M dwarfs, which are induced by orbiting planets. However, there are other potential sources of…

astro-ph.EP2022★ 19 cited

A quarter century of spectroscopic monitoring of the nearby M dwarf Gl 514. A super-Earth on an eccentric orbit moving in and out of the habitable zone

M. Damasso, M. Perger, J. M. Almenara +31

We investigated the presence of planetary companions around the nearby (7.6 pc) and bright ( mag) early-type M dwarf Gl 514, analysing 540 radial velocities collected over nea…

astro-ph.EP2022★ 30 cited

The CARMENES search for exoplanets around M dwarfs: Two Saturn-mass planets orbiting active stars

A. Quirrenbach, V. M. Passegger, T. Trifonov +26

The CARMENES radial-velocity survey is currently searching for planets in a sample of 387 M dwarfs. Here we report on two Saturn-mass planets orbiting TYC 2187-512-1 ($M_\star = 0.…