activity
20012026
most citedA new extensive library of PHOENIX stellar atmospheres and synthetic spectra

2k citations · 18.4k across the 266 of their papers we have counts for

collaborators

268 papers

astro-ph.EP2026

Exploring the ultrahot Neptune LTT 9779 b with CRIRES+. Non-detection of helium transmission spectra and detection of HO on the dayside

S. Liu, F. Yan, L. Nortmann +15

Ultrahot Neptunes reside in the most extreme irradiation regime of the hot Neptune desert and remain challenging targets for atmospheric characterization because of their low plane…

astro-ph.IM2026★ 7 cited

Observing the integrated and spatially resolved Sun with ultra-high spectral resolution

S. Schäfer, K. Royen, A. Huster Zapke +2

The Institute for Astrophysics Göttingen operates a solar observatory that combines a 50\,cm siderostat with (1) a vacuum vertical telescope, (2) a very high resolution Fourier Tra…

astro-ph.IM2026★ 7 cited

Fiber-coupling of Fourier Transform Spectrographs

S. Schäfer, P. Huke, D. Meyer +1

Fourier Transform Spectrographs (FTS) are versatile tools for measuring accurate, high resolution spectra. They are internally calibrated by a reference laser that runs in parallel…

astro-ph.IM2026★ 11 cited

Two Fabry-Perots and two calibration units for CARMENES

Sebastian Schafer, Eike W. Günther, Ansgar Reiners +3

The wavelength calibration and nightly drift measurements for CARMENES (Calar Alto high-Resolution search for M dwarfs with Exoearths with Near-infrared and optical Echelle Spectro…

astro-ph.EP2025

Improving radial velocity precision with CARMENES-PLUS:An upgrade of the near-infrared spectrograph cooling system

R. Varas, R. Calvo-Ortega, P. J. Amado +25

CARMENES is a dual-channel high-resolution spectrograph at the 3.5 m Calar Alto telescope designed to detect low-mass planets around late-type dwarfs by measuring their radial velo…

astro-ph.EP2025★ 1 cited

Discovery of a transiting hot water-world candidate orbiting Ross 176 with TESS and CARMENES

S. Geraldía-González, J. Orell-Miquel, E. Pallé +30

The case of Ross 176 is a late K-type star that hosts a promising water-world candidate planet. The star has a radius of =0.5690.020 and a mass of …