2019
DOI: 10.1051/0004-6361/201935315
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Magnetic fields in M dwarfs from the CARMENES survey

Abstract: Context. M dwarfs are known to generate the strongest magnetic fields among main-sequence stars with convective envelopes, but the link between the magnetic fields and underlying dynamo mechanisms, rotation, and activity still lacks a consistent picture. Aims. In this work we measure magnetic fields from the high-resolution near-infrared spectra taken with the CARMENES radialvelocity planet survey in a sample of 29 active M dwarfs and compare our results against stellar parameters. Methods. We use the state-of… Show more

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Cited by 103 publications
(101 citation statements)
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“…In the future we will apply this approach to other stars with a range of spectral types. For instance, the unresolved magnetic field can be measured with an indication of its complexity using methods such as those developed by (Shulyak et al 2019 |P fit P p |/P p Figure 3. Planet detection simulations that show a mass and period fit errors for grids of simulated planets for each of the spot distribution cases (section 2.2) and observational strategies.…”
Section: Summary and Discussionmentioning
confidence: 99%
“…In the future we will apply this approach to other stars with a range of spectral types. For instance, the unresolved magnetic field can be measured with an indication of its complexity using methods such as those developed by (Shulyak et al 2019 |P fit P p |/P p Figure 3. Planet detection simulations that show a mass and period fit errors for grids of simulated planets for each of the spot distribution cases (section 2.2) and observational strategies.…”
Section: Summary and Discussionmentioning
confidence: 99%
“…This value of the magnetic field strength and flux for HD 189733 is intermediate between nonactive, slow-rotators M dwarfs such as Gl 411 or Gl 380, which have typical fields lower than 1 kG (Moutou et al 2017;Flores et al 2019), and fast-rotator M dwarfs whose field usually ranges from 2 to 5 kG (Shulyak et al 2019). With a rotational period of 12 days, HD 189733 is similar to Gl 49, DS Leo, Gl 208 or CE Boo, whose magnetic field fluxes lie between 0.5 and 2 kG according to far-red measurements of FeH and Ti (see Fig.…”
Section: Zeeman Broadeningmentioning
confidence: 91%
“…In the case of different configurations of the roadway, we can accept that the boundaries (1) of a system functionality scope in the general case are random variables with some common probability density ωt (α, β) [8][9][10]. Then, for all possible values of the functionality scope limits, the realization probability of target goal of the transport unit steerability (mathematical expectation of the solution of the assigned task) by steering control is written in the form:…”
Section: Methodsmentioning
confidence: 99%