List of works by Sandra Jeffers

27 September 2012The Exoplanet Characterization Observatory (EChO): performance model EclipseSim and applications

scholarly article

A BCool magnetic snapshot survey of solar-type stars

scholarly article

A BCool survey of the magnetic fields of planet-hosting solar-type stars ⬇️

scientific article

A Bcool spectropolarimetric survey of over 150 solar-type stars

A Machine Learning approach for correcting radial velocities using physical observables

scientific article published in April 2023

A candidate super-Earth planet orbiting near the snow line of Barnard’s star

scientific article published in Nature

A giant exoplanet orbiting a very-low-mass star challenges planet formation models ⬇️

scientific article published on 01 September 2019

A maximum entropy approach to detect close-in giant planets around active stars ⬇️

scientific article published in Astronomy and Astrophysics

A multi-planetary system orbiting the early-M dwarf TOI-1238

A multiplanet system of super-Earths orbiting the brightest red dwarf star GJ 887

scientific article published on 25 June 2020

A nearby transiting rocky exoplanet that is suitable for atmospheric investigation

A solar-like magnetic cycle on the mature K-dwarf 61 Cygni A (HD 201091) ⬇️

scientific article published in Astronomy and Astrophysics

A terrestrial planet candidate in a temperate orbit around Proxima Centauri ⬇️

scientific article (publication date: 24 August 2016)

A transiting, temperate mini-Neptune orbiting the M dwarf TOI-1759 unveiled by TESS ⬇️

scientific article published in 2022

An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685

scientific article published in June 2021

Analysis of combined radial velocities and activity of BD+20 1790: evidence supporting the existence of a planetary companion ⬇️

scientific article published in Astronomy and Astrophysics

Are there tangled magnetic fields on HgMn stars?

scientific article published in Astronomy and Astrophysics

Asteroseismology and Spectropolarimetry of the Exoplanet Host Star λ Serpentis

scientific article published on 21 September 2023

BP Piscium: its flaring disc imaged with SPHERE/ZIMPOL

CARMENES input catalog of M dwarfs

scholarly article

CARMENES input catalogue of M dwarfs

scientific article

CARMENES. I: instrument and survey overview

CARMENES: an overview six months after first light

CARMENES: high-resolution spectra and precise radial velocities in the red and infrared

Chemical spots in the absence of magnetic field in the binary HgMn star 66 Eridani

scientific article published in Astronomy and Astrophysics

Constraining the circumbinary envelope of Z Canis Majoris via imaging polarimetry

scientific article published in Astronomy and Astrophysics

Could a change in magnetic field geometry cause the break in the wind-activity relation? ⬇️

Data-reduction techniques for high-contrast imaging polarimetry

scientific article published in Astronomy and Astrophysics

Dense Spot Coverage and Polar Caps on SV Cam

Detailed stellar activity analysis and modelling of GJ 832: Reassessment of the putative habitable zone planet GJ 832c

Detection of He I {lambda}10830 {AA} absorption on HD 189733 b with CARMENES high-resolution transmission spectroscopy

scientific article published in January 2018

Direct Evidence for a Polar Spot on SV Camelopardalis ⬇️

scientific article published in the Astrophysical Journal

Direct evidence of a full dipole flip during the magnetic cycle of a sun-like star

scientific article published in January 2018

Direct imaging of a massive dust cloud around R Coronae Borealis

scientific article published in Astronomy and Astrophysics

Discovery and mass measurement of the hot, transiting, Earth-sized planet GJ 3929 b

Discovery of a hot, transiting, Earth-sized planet and a second temperate, non-transiting planet around the M4 dwarf GJ 3473 (TOI-488)

scholarly article

Dynamo processes and activity cycles of the active stars AB Doradus, LQ Hydrae and HR 1099

scholarly article

EPOXI: comet 103P/Hartley 2 observations from a worldwide campaign ⬇️

Efficient scheduling of astronomical observations

scientific article published in Astronomy and Astrophysics

Erratum: The solar wind in time II: 3D stellar wind structure and radio emission

scholarly article

Estimating Magnetic Filling Factors from Zeeman–Doppler Magnetograms

article

First detection of linear polarization in the line profiles of active cool stars ⬇️

article by O. Kochukhov et al published 13 April 2011 in Letters of the Astrophysical Journal

GJ 806 (TOI-4481): A bright nearby multi-planetary system with a transiting hot, low-density super-Earth

scientific article published in 2023

Gliese 49: activity evolution and detection of a super-Earth

scientific article published in April 2019

H alpha variability of Nova Vulpeculae 1976

scientific article published in January 1978

HARPS spectropolarimetry of classical T Tauri stars

HARPSpol - The new polarimetric mode for HARPS

scientific article published in January 2011

HD 152408

scientific article

High levels of surface differential rotation on the young G0 dwarf HD171488

scientific article published in January 2008

High-resolution spectropolarimetry of κ Cet: A proxy for the young Sun

Hubble Space Telescope observations of SV Cam - II. First derivative light-curve modelling using phoenix and atlas model atmospheres

article by S. V. Jeffers et al published 11 April 2006 in Monthly Notices of the Royal Astronomical Society

Hubble Space Telescope observations of SV Cam -- I. The importance of unresolved star-spot distributions in light-curve fitting

scholarly article

Imaging the circumstellar environment of the young T Tauri star SU Aurigae

scientific article published in Astronomy and Astrophysics

Is it possible to detect planets around young active G and K dwarfs ?

scholarly article

J-band variability of M dwarfs in the WFCAM Transit Survey

scientific article

Magnetic activity on AB Doradus: temporal evolution of star-spots and differential rotation from 1988 to 1994

scholarly article

Magnetic field and wind of kappa Ceti: toward the planetary habitability of the young Sun when life arose on Earth ⬇️

scientific article

Magnetic fields and accretion flows on the classical T Tauri star V2129 Oph*

scientific article

Magnetic fields on young, moderately rotating Sun-like stars – I. HD 35296 and HD 29615 ⬇️

scholarly article

Magnetic fields on young, moderately rotating Sun-like stars – II. EK Draconis (HD 129333) ⬇️

scientific article

Magnetically controlled accretion on the classical T Tauri stars GQ Lupi and TW Hydrae ⬇️

scientific article published in the Astrophysical Journal

Magnetism, chemical spots, and stratification in the HgMn starϕ Phoenicis

scientific article published in Astronomy and Astrophysics

Multiple views of magnetism in cool stars

scholarly article

Near-Earth object velocity distributions and consequences for the Chicxulub impactor

scientific article published in January 2001

No evidence for activity correlations in the radial velocities of Kapteyn's star ⬇️

scientific article published in the Astrophysical Journal

No magnetic field in the spotted HgMn starμ Leporis

scientific article published in Astronomy and Astrophysics

Observations of non-solar-type dynamo processes in stars with shallow convective zones

scientific article published in January 2011

On the effects of stellar winds on exoplanetary magnetospheres

PolarBase: A Database of High-Resolution Spectropolarimetric Stellar Observations ⬇️

scholarly article

Precise mass and radius of a transiting super-Earth planet orbiting the M dwarf TOI-1235: a planet in the radius gap?

scientific article published in July 2020

Precision radial velocities of 15 M5–M9 dwarfs ⬇️

scholarly article

Radial velocity signatures of Zeeman broadening

scientific article published in Astronomy and Astrophysics

Recovering planet radial velocity signals in the presence of starspot activity in fully convective stars ⬇️

scientific article

Red Optical Planet Survey: a new search for habitable earths in the southern sky

article

RedDots: a temperate 1.5 Earth-mass planet candidate in a compact multiterrestrial planet system around GJ 1061

scientific article published on 29 January 2020

Rotational periods of four roAp stars

scientific article published in Astronomy and Astrophysics

Short-term line-profile variability of gamma 2 Velorum - evidence fora compact companion ?

scientific article published in January 1985

Short-term spectral variability of gamma Velorum. Photometric observations ⬇️

scientific article published in January 1974

Spectral analysis of the low-gravity extreme helium stars LSS 4357, LS II+33 5 and LSS 99

scientific article published in January 1998

Spectrophotometric catalogue of southern Wolf-Rayet stars

Spectrophotometry using an intensifier silicon vidicon

Spectrum radial velocity analyser (SERVAL)

scientific article published in Astronomy and Astrophysics

Spurious `active longitudes' in parametric models of heavily spotted eclipsing binaries

scientific article published in January 2005

Starspot distributions on fully convective M dwarfs: implications for radial velocity planet searches ⬇️

scientific article published in January 2015

Stellar activity analysis of Barnard’s Star: Very slow rotation and evidence for long-term activity cycle

scientific article

Studying stellar spin-down with Zeeman–Doppler magnetograms

scientific article

Substellar companions and isolated planetary-mass objects from protostellar disc fragmentation

scientific article

Surface magnetism of cool stars

Surprising detection of an equatorial dust lane on the AGB star IRC+10216 ⬇️

scientific article published in Astronomy and Astrophysics

Surprisingly different star-spot distributions on the near equal-mass equal-rotation-rate stars in the M dwarf binary GJ 65 AB

scientific article published in January 2017

TOI-1201 b: A mini-Neptune transiting a bright and moderately young M dwarf

TOI-1468: A system of two transiting planets, a super-Earth and a mini-Neptune, on opposite sides of the radius valley

scientific article published in 2022

TOI-4438 b: a transiting mini-Neptune amenable to atmospheric characterization

scientific article published on 6 March 2024

Temporal variability of the wind from the star τ Boötis ⬇️

scholarly article

The CARMENES Search for Exoplanets around M Dwarfs: A Low-mass Planet in the Temperate Zone of the Nearby K2-18

scientific article published in Astronomical Journal

The CARMENES search for exoplanets around M dwarfs

scientific article

The CARMENES search for exoplanets around M dwarfs

The CARMENES search for exoplanets around M dwarfs

The CARMENES search for exoplanets around M dwarfs

scientific article published in September 2021

The CARMENES search for exoplanets around M dwarfs

scientific article published in February 2023

The CARMENES search for exoplanets around M dwarfs. A Neptune-mass planet traversing the habitable zone around HD 180617

scientific article

The CARMENES search for exoplanets around M dwarfs. A long-period planet around GJ 1151 measured with CARMENES and HARPS-N data

The CARMENES search for exoplanets around M dwarfs. Characterization of the nearby ultra-compact multiplanetary system YZ Ceti

The CARMENES search for exoplanets around M dwarfs. Chromospheric modeling of M 2-3 V stars with PHOENIX

scholarly article

The CARMENES search for exoplanets around M dwarfs. Different roads to radii and masses of the target stars

scientific article

The CARMENES search for exoplanets around M dwarfs. HD147379 b: A nearby Neptune in the temperate zone of an early-M dwarf

scientific article

The CARMENES search for exoplanets around M dwarfs. High-resolution optical and near-infrared spectroscopy of 324 survey stars

scholarly article

The CARMENES search for exoplanets around M dwarfs. Measuring precise radial velocities in the near infrared: The example of the super-Earth CD Cet b

The CARMENES search for exoplanets around M dwarfs. Period search in Hα, Na I D, and Ca II IRT lines

scholarly article

The CARMENES search for exoplanets around M dwarfs. The enigmatic planetary system GJ 4276: one eccentric planet or two planets in a 2:1 resonance? ⬇️

scientific article

The CARMENES search for exoplanets around M dwarfs. Wing asymmetries of H{alpha}, Na I D, and He I lines

scientific article published in January 2018

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

The Solar Wind in Time II: 3D stellar wind structure and radio emission

scientific article

The color dependent morphology of the post-AGB star HD 161796

scientific article published in Astronomy and Astrophysics

The connection between stellar activity cycles and magnetic field topology ⬇️

scientific article

The crucial role of surface magnetic fields for stellar dynamos: Epsilon Eridani, 61 Cygni A, and the Sun

The effect of M dwarf starspot activity on low-mass planet detection thresholds

scientific article published in January 2011

The effects of stellar winds on the magnetospheres and potential habitability of exoplanets ⬇️

scientific article published in Astronomy and Astrophysics

The energy budget of stellar magnetic fields ⬇️

scientific article

The energy budget of stellar magnetic fields: comparing non-potential simulations and observations ⬇️

scholarly article

The evolution of surface magnetic fields in young solar-type stars – I. The first 250 Myr ⬇️

scholarly article

The evolving magnetic topology of τ Boötis ⬇️

scientific article

The extreme polarimeter: design, performance, first results and upgrades

The influence of convective blueshift on radial velocities of F, G, and K stars

scientific article published in January 2018

The large scale magnetic field of the G0 dwarf HD 206860 (HN Peg)

The latitude distribution of star-spots on He 699

scientific article

The relation between stellar magnetic field geometry and chromospheric activity cycles – II The rapid 120-day magnetic cycle of τ Bootis

scientific article

The rotationally modulated polarization of ξ Boo A

scientific article

The search for magnetic fields in mercury-manganese stars

scientific article published in Astronomy and Astrophysics

The search for magnetic fields in mercury-manganese stars

The solar proxy κ1 Cet and the planetary habitability around the young Sun

The upgrade of HARPS to a full-Stokes high-resolution spectropolarimeter

The variable magnetic field of V889 Her and the challenge of detecting exoplanets around young Suns using Gaussian process regression

scholarly article

Theoretical calculation of the cratering on Ida, Mathilde, Eros and Gaspra

scientific article published in January 2003

Three-dimensional magnetic and abundance mapping of the cool Ap star HD 24712 . I. Spectropolarimetric observations in all four Stokes parameters

scientific article published in Astronomy and Astrophysics

Two planets around Kapteyn's star: a cold and a temperate super-Earth orbiting the nearest halo red dwarf ⬇️

scholarly article

Variable magnetic field geometry of the young sun HN Pegasi (HD 206860) ⬇️

scientific article published in Astronomy and Astrophysics

Wolf 327b: A new member of the pack of ultra-short-period super-Earths around M dwarfs

ϵEridani: an active K dwarf and a planet hosting star?

scientific article published in Astronomy and Astrophysics

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