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19932026
most citedThe Gaia mission

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astro-ph.SR2026

Rapidly oscillating Ap stars observed with TESS. The LAMOST Ap sample and 49 Cam

Inês Rolo, Daniel L. Holdsworth, Margarida S. Cunha +4

The rapidly oscillating chemically peculiar A-type (roAp) stars offer valuable insights into the internal physical processes of all stars, but their study is challenged by their ra…

astro-ph.SR2026

Mining the Kepler Field: Atmospheric Parameters, Bolometric Corrections, and Luminosities

Diego Godoy-Rivera, Desmond H. Grossmann, Tyler Richey-Yowell +3

The ~ 200,000 stars observed by the Kepler mission have provided unprecedented constraints across astrophysics. With the advent of modern spectroscopic and photometric surveys, new…

astro-ph.SR2026

Exploring the surface of HD 189733 via Doppler shadow analysis of planetary transits

E. C. Gonçalves, E. Cristo, W. Dethier +6

Transmission spectroscopy has greatly advanced the study of exoplanet atmospheres, but stellar surface heterogeneities can contaminate transit spectra. Characterising how stellar s…

astro-ph.SR2026★ 2 cited

TILARA: Template-Independent Line-by-line Algorithm for Radial velocity Analysis. I. Description of the code and application on a Sun-like star

C. San Nicolas Martinez, N. C. Santos, V. Adibekyan +3

Precise radial velocities (RVs) are commonly derived through cross-correlation or template-matching methods, both of which rely on a reference spectrum that can introduce biases wh…

astro-ph.SR2025★ 4 cited

Unveiling the nature of HE 0107-5240

E. Caffau, M. Steffen, P. Molaro +27

The vast majority of the most iron-poor stars in the Galaxy exhibit a strong carbon enhancement, with C/H ratios only about two orders of magnitude below solar. This unusual chemic…

astro-ph.SR2025★ 5 cited

Chromaticity of stellar activity in radial velocities : Anti-correlated families of lines on the M dwarf EV Lac with SPIRou and SOPHIE

Pierre Larue, Xavier Delfosse, Andres Carmona +33

Context. In the search for exoplanets using radial velocities (RV), stellar activity has become one of the main limiting factors for detectability. Fortunately, activity-induced RV…