Constraining the Nature of the PDS 70 Protoplanets with VLTI/GRAVITY∗

JJ Wang, A Vigan, S Lacour, M Nowak… - The Astronomical …, 2021 - iopscience.iop.org
We present K-band interferometric observations of the PDS 70 protoplanets along with their
host star using VLTI/GRAVITY. We obtained K-band spectra and 100 μas precision …

Detection and bulk properties of the HR 8799 planets with high-resolution spectroscopy

JJ Wang, JB Ruffio, E Morris, JR Delorme… - The Astronomical …, 2021 - iopscience.iop.org
Abstract Using the Keck Planet Imager and Characterizer, we obtained high-resolution (R∼
35,000) K-band spectra of the four planets orbiting HR 8799. We clearly detected H 2 O and …

The Hawaii infrared parallax program. II. Young ultracool field dwarfs

MC Liu, TJ Dupuy, KN Allers - The Astrophysical Journal, 2016 - iopscience.iop.org
We present a large, uniform analysis of young (≈ 10–150 Myr) ultracool dwarfs, based on
new high-precision infrared (IR) parallaxes for 68 objects. We find that low-gravity (vl-g) late …

Four-of-a-kind? Comprehensive atmospheric characterisation of the HR 8799 planets with VLTI/GRAVITY

E Nasedkin, P Mollière, S Lacour, M Nowak… - Astronomy & …, 2024 - aanda.org
With four companions at separations from 16 to 71 au, HR 8799 is a unique target for direct
imaging, presenting an opportunity for a comparative study of exoplanets with a shared …

BANYAN. VII. A new population of young substellar candidate members of nearby moving groups from the BASS survey

J Gagné, JK Faherty, KL Cruz… - The Astrophysical …, 2015 - iopscience.iop.org
We present the results of a near-infrared (NIR) spectroscopic follow-up survey of 182 M4–L7
low-mass stars and brown dwarfs (BDs) from the BANYAN All-Sky Survey (BASS) for …

The UKIRT Hemisphere Survey: definition and J-band data release

S Dye, A Lawrence, MA Read, X Fan… - Monthly Notices of …, 2018 - academic.oup.com
This paper defines the UK Infra-Red Telescope (UKIRT) Hemisphere Survey (UHS) and
release of the remaining∼ 12 700 deg2 of J-band survey data products. The UHS will …

Spectral and atmospheric characterization of 51 Eridani b using VLT/SPHERE

M Samland, P Mollière, M Bonnefoy, AL Maire… - Astronomy & …, 2017 - aanda.org
Context. 51 Eridani b is an exoplanet around a young (20 Myr) nearby (29.4 pc) F0-type star,
which was recently discovered by direct imaging. It is one of the closest direct imaging …

Keck/NIRC2 L'-band imaging of Jovian-Mass accreting protoplanets around PDS 70

JJ Wang, S Ginzburg, B Ren, N Wallack… - The Astronomical …, 2020 - iopscience.iop.org
We present L'-band imaging of the PDS 70 planetary system with Keck/NIRC2 using the new
infrared pyramid wave front sensor. We detected both PDS 70 b and c in our images, as well …

Astrometry and Photometry for≈ 1000 L, T, and Y Dwarfs from the UKIRT Hemisphere Survey

AC Schneider, JA Munn, FJ Vrba… - The Astronomical …, 2023 - iopscience.iop.org
We present the positions, proper motions, and near-infrared photometry for 966 known
objects with spectral types later than M that were observed as part of the the UKIRT …

First light of the VLT planet finder SPHERE-IV. Physical and chemical properties of the planets around HR8799

M Bonnefoy, A Zurlo, JL Baudino, P Lucas… - Astronomy & …, 2016 - aanda.org
Context. The system of fourplanets discovered around the intermediate-mass star HR8799
offers a unique opportunity to test planet formation theories at large orbital radii and to probe …