Density, not radius, separates rocky and water-rich small planets orbiting M dwarf stars

R Luque, E Pallé - Science, 2022 - science.org
Exoplanets smaller than Neptune are common around red dwarf stars (M dwarfs), with those
that transit their host star constituting the bulk of known temperate worlds amenable for …

The complex circumstellar environment of supernova 2023ixf

EA Zimmerman, I Irani, P Chen, A Gal-Yam, S Schulze… - Nature, 2024 - nature.com
The early evolution of a supernova (SN) can reveal information about the environment and
the progenitor star. When a star explodes in vacuum, the first photons to escape from its …

Heavy metal rules. I. Exoplanet incidence and metallicity

V Adibekyan - Geosciences, 2019 - mdpi.com
The discovery of only a handful of exoplanets required establishing a correlation between
giant planet occurrence and metallicity of their host stars. More than 20 years have already …

A compositional link between rocky exoplanets and their host stars

V Adibekyan, C Dorn, SG Sousa, NC Santos, B Bitsch… - Science, 2021 - science.org
Stars and planets both form by accreting material from a surrounding disk. Because they
grow from the same material, theory predicts that there should be a relationship between …

A candidate short-period sub-Earth orbiting Proxima Centauri

JP Faria, AS Mascareño, P Figueira, AM Silva… - Astronomy & …, 2022 - aanda.org
Context. Proxima Centauri is the closest star to the Sun. This small, low-mass, mid M dwarf is
known to host an Earth-mass exoplanet with an orbital period of 11.2 days within the …

Instrumentation for the detection and characterization of exoplanets

F Pepe, D Ehrenreich, MR Meyer - Nature, 2014 - nature.com
In no other field of astrophysics has the impact of new instrumentation been as substantial
as in the domain of exoplanets. Before 1995 our knowledge of exoplanets was mainly based …

The GAPS programme with HARPS-N at TNG-XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting …

AS Bonomo, S Desidera, S Benatti, F Borsa… - Astronomy & …, 2017 - aanda.org
We carried out a Bayesian homogeneous determination of the orbital parameters of 231
transiting giant planets (TGPs) that are alone or have distant companions; we employed …

3D selection of 167 substellar companions to nearby stars

F Feng, RP Butler, SS Vogt, MS Clement… - The Astrophysical …, 2022 - iopscience.iop.org
We analyze 5108 AFGKM stars with at least five high-precision radial velocity points, as well
as Gaia and Hipparcos astrometric data, utilizing a novel pipeline developed in previous …

A spectral survey of an ultra-hot Jupiter-Detection of metals in the transmission spectrum of KELT-9 b

HJ Hoeijmakers, D Ehrenreich, D Kitzmann… - Astronomy & …, 2019 - aanda.org
Context. KELT-9 b exemplifies a newly emerging class of short-period gaseous exoplanets
that tend to orbit hot, early type stars–termed ultra-hot Jupiters. The severe stellar irradiation …

Warm terrestrial planet with half the mass of Venus transiting a nearby star

ODS Demangeon, MRZ Osorio, Y Alibert… - Astronomy & …, 2021 - aanda.org
In recent years, the advent of a new generation of radial velocity instruments has allowed us
to detect planets with increasingly lower mass and to break the one Earth-mass barrier. Here …