activity
20182026
most citedThe extended halo of NGC 2682 (M 67) from Gaia DR2

69 citations · 1.1k across the 113 of their papers we have counts for

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7 papers · 1 filter

astro-ph.EP2025

Blind search for activity-sensitive lines in the near-infrared using HARPS and NIRPS observations of Proxima and Gl 581

João Gomes da Silva, Elisa Delgado-Mena, Nuno C. Santos +145

Stellar activity variability is one of the main obstacles to the detection of Earth-like planets using the RV method. The aim of this work is to measure the effect of activity in t…

astro-ph.EP2024★ 17 cited

Euclid: Early Release Observations -- A glance at free-floating new-born planets in the sigma Orionis cluster

E. L. Martín, M. {Ž}erjal, H. Bouy +175

We provide an early assessment of the imaging capabilities of the Euclid space mission to probe deeply into nearby star-forming regions and associated very young open clusters, and…

astro-ph.EP2023★ 15 cited

Euclid: Identification of asteroid streaks in simulated images using deep learning

M. Pöntinen, M. Granvik, A. A. Nucita +114

Up to 150000 asteroids will be visible in the images of the ESA Euclid space telescope, and the instruments of Euclid offer multiband visual to near-infrared photometry and slitles…

astro-ph.EP2022★ 55 cited

Detection of barium in the atmospheres of the ultra-hot gas giants WASP-76b and WASP-121b

T. Azevedo Silva, O. D. S. Demangeon, N. C. Santos +33

High-resolution spectroscopy studies of ultra-hot Jupiters have been key in our understanding of exoplanet atmospheres. Observing into the atmospheres of these giant planets allows…

astro-ph.EP2020★ 40 cited

Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) VI. Non-detection of sodium with HARPS on the bloated super-Neptune WASP-127b

J. V. Seidel, M. Lendl, V. Bourrier +17

WASP-127b is one of the puffiest exoplanets found to date, with a mass only Neptune masses, but a radius larger than Jupiter. It is also located at the border of the Neptune…

astro-ph.EP2020★ 65 cited

WASP-186 and WASP-187: two hot Jupiters discovered by SuperWASP and SOPHIE with additional observations by TESS

N. Schanche, G. Hébrard, A. Collier Cameron +15

We present the discovery of two new hot Jupiters identified from the WASP survey, WASP-186b and WASP-187b (TOI-1494.01 and TOI-1493.01). Their planetary nature was established from…

astro-ph.EP2019★ 23 cited

The SOPHIE search for northern extrasolar planets XV. A Warm Neptune around the M-dwarf Gl378

M. J. Hobson, X. Delfosse, N. Astudillo-Defru +31

We present the detection of a Warm Neptune orbiting the M-dwarf Gl378, using radial velocity measurements obtained with the SOPHIE spectrograph at the Observatoire de Haute-Provenc…