L. Nortmann

VLT/CRIRES+ spectroscopic observations of GJ1214

Alexis Lavail, L. Nortmann

Reduced CRIRES+ spectroscopy observations of GJ 1214 b This records contains the reduced data as used in the publication of Nortmann et al. 2026 "Cloudy with a chance of metals: Indications of CO in the atmosphere of GJ 1214 b from high-resolution …

fr, de (code pays fourni par la source)

VLT/CRIRES+ spectroscopic observations of GJ1214

Alexis Lavail, L. Nortmann

Reduced CRIRES+ spectroscopy observations of GJ 1214 b This records contains the reduced data as used in the publication of Nortmann et al. 2026 "Cloudy with a chance of metals: Indications of CO in the atmosphere of GJ 1214 b from high-resolution …

fr, de (code pays fourni par la source)

Elemental abundance pattern and temperature inversion on the dayside of HAT-P-70b observed with CARMENES and PEPSI

B. Guo, F. Yan, Th. Henning, L. Nortmann et autres

Ground-based high-resolution spectroscopic observations have identified various chemical species in the atmosphere of numerous ultra-hot Jupiters (UHJs), including neutral and ionized metals. These detections have offered valuable insights into planet formation mechanisms via abundance measurements of refractory elements. We observed the dayside …

cn, de, it, es, am, us (code pays fourni par la source)

Tighter constraints on the atmosphere of GJ 436 b from combined high-resolution CARMENES and CRIRES + observations

A. Peláez-Torres, A. Sánchez-López, L. Nortmann, M. López‐Puertas et autres

Context . Transmission spectra of Neptune-sized exoplanets are frequently observed to be featureless at low-to-mid resolutions from space; whereas high-altitude clouds can mute spectral features, high atmospheric metallicities can also result in compressed envelopes, where low scale heights may also yield undetectable …

es, de, it, rs, us, bg, cn (code pays fourni par la source)

Tighter constraints on the atmosphere of GJ 436 b from combined high-resolution CARMENES and CRIRES$^+$ observations

A. Peláez-Torres, A. Sánchez-López, L. Nortmann, M. López-Puertas et autres

We aim to study the atmospheric properties of the warm Neptune GJ 436 b by combining a set of five transit events observed with the CARMENES spectrograph with one transit from CRIRES$^+$ so as to provide the most constrained results possible at …

Ground-breaking exoplanet science with the ANDES spectrograph at the ELT

Ε. Πάλλη, K. Biazzo, Émeline Bolmont, P. Mollière et autres

Abstract In the past decade the study of exoplanet atmospheres at high-spectral resolution, via transmission/emission spectroscopy and cross-correlation techniques for atomic/molecular mapping, has become a powerful and consolidated methodology. The current limitation is the signal-to-noise ratio that one can obtain during a …

es, it, ch, de, gb, fr, se, dk, pt, ca, br, pl, us (code pays fourni par la source)

viper: High-precision radial velocities from the optical to the infrared

Jan Köhler, M. Zechmeister, A. Hatzes, Sireesha Chamarthi et autres

Context. High-precision radial velocity (RV) measurements with slit spectrographs require the instrument profile (IP) and Earth’s atmospheric spectrum to be known and to be incorporated into the RV calculation. Aims. We developed an RV pipeline, called Velocity and IP EstimatoR (viper), to …

de, in, se, cl (code pays fourni par la source)

Connection between planetary He I λ10 830 Å absorption and extreme-ultraviolet emission of planet-host stars

J. Sanz‐Forcada, M. López‐Puertas, M. Lampón, S. Czesla et autres

Context . The detection of the He I λ10 830 Å triplet in exoplanet atmospheres has opened a new window for probing planetary properties, including atmospheric escape. Unlike Lyman α, the triplet is significantly less affected by interstellar medium (ISM) absorption. Sufficient …

es, de (code pays fourni par la source)

CRIRES+ transmission spectroscopy of WASP-127 b

L. Nortmann, F. Lesjak, F. Yan, D. Cont et autres

Context. General circulation models of gas giant exoplanets predict equatorial jets that drive inhomogeneities in the atmospheric physical parameters across the planetary surface. Aims. We studied the transmission spectrum of the hot Jupiter WASP-127 b during one transit in the K band …

de, cn, fr, se, es (code pays fourni par la source)

Retrieving wind properties from the ultra-hot dayside of WASP-189b with CRIRES$^+$

F. Lesjak, L. Nortmann, D. Cont, F. Yan et autres

The extreme temperature gradients from day- to nightside in the atmospheres of hot Jupiters generate fast winds in the form of equatorial jets or day-to-night flows. Observations of blue-shifted and red-shifted signals in the transmission and dayside spectra of WASP-189b have sparked …

The overflowing atmosphere of WASP-121 b

S. Czesla, F. Nail, A. Lavail, D. Cont et autres

Transmission spectroscopy is a prime method to study the atmospheres of extrasolar planets. We obtained a high-resolution spectral transit time series of the hot Jupiter WASP-121 b with CRIRES+ to study its atmosphere via transmission spectroscopy of the He I λ 10833 …

de, sk, nl, fr, se, es, us, cn (code pays fourni par la source)

Evidence of Water Vapor in the Atmosphere of a Metal-rich Hot Saturn with High-resolution Transmission Spectroscopy

Sayyed A. Rafi, Stevanus K. Nugroho, Motohide Tamura, L. Nortmann et autres

Abstract Transmission spectroscopy presents one of the most successful approaches for investigating the atmospheres of exoplanets. We analyzed the near-infrared high-resolution transmission spectrum of a hot Saturn, HD 149026 b, taken using CARMENES spectrograph ( R ∼ 80,400 ). We found evidence …

jp, de, es (code pays fourni par la source)