Adaptive optics for high-resolution imaging

KM Hampson, R Turcotte, DT Miller… - Nature Reviews …, 2021 - nature.com
Adaptive optics (AO) is a technique that corrects for optical aberrations. It was originally
proposed to correct for the blurring effect of atmospheric turbulence on images in ground …

The JWST Early-release Science Program for Direct Observations of Exoplanetary Systems II: a 1 to 20 μm spectrum of the planetary-mass companion VHS 1256 …

BE Miles, BA Biller, P Patapis, K Worthen… - The Astrophysical …, 2023 - iopscience.iop.org
We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is
a< 20 M Jup widely separated (∼ 8'', a= 150 au), young, planetary-mass companion that …

Stellar and substellar companions from Gaia EDR3-Proper-motion anomaly and resolved common proper-motion pairs

P Kervella, F Arenou, F Thévenin - Astronomy & Astrophysics, 2022 - aanda.org
Context. The multiplicity fraction of stars, down to the substellar regime, is a parameter of
fundamental importance for stellar formation, evolution, and planetology. The census of …

The Gemini Planet Imager Exoplanet Survey: giant planet and brown dwarf demographics from 10 to 100 au

EL Nielsen, RJ De Rosa, B Macintosh… - The Astronomical …, 2019 - iopscience.iop.org
We present a statistical analysis of the first 300 stars observed by the Gemini Planet Imager
Exoplanet Survey. This subsample includes six detected planets and three brown dwarfs; …

Imaging extrasolar giant planets

BP Bowler - Publications of the Astronomical Society of the …, 2016 - iopscience.iop.org
High-contrast adaptive optics (AO) imaging is a powerful technique to probe the
architectures of planetary systems from the outside-in and survey the atmospheres of self …

Peering into the formation history of β Pictoris b with VLTI/GRAVITY long-baseline interferometry

M Nowak, S Lacour, P Mollière, J Wang… - Astronomy & …, 2020 - aanda.org
Context. β Pictoris is arguably one of the most studied stellar systems outside of our own.
Some 30 yr of observations have revealed a highly-structured circumstellar disk, with rings …

A super-Earth and a sub-Neptune orbiting the bright, quiet M3 dwarf TOI-1266

BO Demory, FJ Pozuelos, YGM Chew, L Sabin… - Astronomy & …, 2020 - aanda.org
We report the discovery and characterisation of a super-Earth and a sub-Neptune transiting
the bright (K= 8.8), quiet, and nearby (37 pc) M3V dwarf TOI-1266. We validate the planetary …

Detection and characterization of exoplanets using projections on karhunen–loeve eigenimages: Forward modeling

L Pueyo - The Astrophysical Journal, 2016 - iopscience.iop.org
ABSTRACT A new class of high-contrast image analysis algorithms that empirically fit and
subtract systematic noise has lead to recent discoveries of faint exoplanet/substellar …

MIRACLES: atmospheric characterization of directly imaged planets and substellar companions at 4–5 μm-I. Photometric analysis of β Pic b, HIP 65426 b, PZ Tel B …

T Stolker, SP Quanz, KO Todorov, J Kühn… - Astronomy & …, 2020 - aanda.org
Context. Directly imaged planets and substellar companions are key targets for the
characterization of self-luminous atmospheres. Their photometric appearance at 4–5 μm is …

Magellan adaptive optics imaging of PDS 70: measuring the mass accretion rate of a young giant planet within a gapped disk

K Wagner, KB Follette, LM Close, D Apai… - The Astrophysical …, 2018 - iopscience.iop.org
PDS 70b is a recently discovered and directly imaged exoplanet within the wide (≳ 40 au)
cavity around PDS 70. Ongoing accretion onto the central star suggests that accretion onto …