Gillian Wright
A5106262715- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astronomy and Astrophysical Research
- Calibration and Measurement Techniques
- Gamma-ray bursts and supernovae
- Galaxies: Formation, Evolution, Phenomena
- Adaptive optics and wavefront sensing
- Spectroscopy and Laser Applications
- Astro and Planetary Science
- Atmospheric Ozone and Climate
- Astrophysical Phenomena and Observations
- Molecular Spectroscopy and Structure
- Astronomical Observations and Instrumentation
- Infrared Target Detection Methodologies
- Astrophysics and Cosmic Phenomena
- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Spacecraft and Cryogenic Technologies
- Laser Design and Applications
- Optical Systems and Laser Technology
- Prenatal Screening and Diagnostics
- Optical Polarization and Ellipsometry
- Craniofacial Disorders and Treatments
- Cleft Lip and Palate Research
- Atomic and Molecular Physics
UK Astronomy Technology Centre
2008-2024
Royal Observatory
2007-2024
Great Ormond Street Hospital
2022-2023
University College London
2022-2023
Institute of Medical Ethics
2022
Herzberg Institute of Astrophysics
2004
University of Edinburgh
1999-2004
Goddard Space Flight Center
2004
Joint Institute for Nuclear Astrophysics
1993-1995
University of Hawaii at Hilo
1995
The James Webb Space Telescope (JWST) is a large (6.6 m), cold (<50 K), infrared (IR)-optimized space observatory that will be launched early in the next decade into orbit around second Earth–Sun Lagrange point. have four instruments: near-IR camera, multiobject spectrograph, and tunable filter imager cover wavelength range, 0.6 < ; 5.0 μ m, while mid-IR instrument do both imaging spectroscopy from 29 m. JWST science goals are divided themes. key objective of End Dark Ages: First Light...
Abstract This paper characterizes the actual science performance of James Webb Space Telescope (JWST), as determined from six month commissioning period. We summarize spacecraft, telescope, instruments, and ground system, with an emphasis on differences pre-launch expectations. Commissioning has made clear that JWST is fully capable achieving discoveries for which it was built. Moreover, almost across board, better than expected; in most cases, will go deeper faster expected. The telescope...
Abstract The Mid-Infrared Instrument (MIRI) extends the reach of James Webb Space Telescope (JWST) to 28.5 μ m. It provides subarcsecond-resolution imaging, high sensitivity coronagraphy, and spectroscopy at resolutions λ /Δ ∼ 100–3500, with high-resolution mode employing an integral field unit provide spatial data cubes. resulting broad suite capabilities will enable huge advances in studies over this wavelength range. This overview describes history acquiring capability for JWST. discusses...
The Medium-Resolution Spectrometer (MRS) provides one of the four operating modes Mid-Infrared Instrument (MIRI) on board James Webb Space Telescope (JWST). MRS is an integral field spectrometer, measuring spatial and spectral distributions light across 5-28 $\mu m$ wavelength range with a resolving power between 3700-1300. We present MRS's optical, spectral, spectro-photometric performance, as achieved in flight, we report effects that limit instrument's ultimate sensitivity. flight...
Abstract We present the ultraviolet luminosity function and an estimate of cosmic star formation rate density at 8 < z 13 derived from deep NIRCam observations taken in parallel with MIRI Deep Survey Hubble Ultra Field (HUDF), covering field 2. Our (40 hr) reach F277W magnitude 30.8 (5 σ ), more than 2 mag deeper JWST public data sets already analyzed to find high-redshift galaxies. select a sample 44 > galaxy candidates based on their dropout nature F115W and/or F150W filters, high...
We present JWST-MIRI MRS spectra of the protoplanetary disk around low-mass T Tauri star GW Lup from MIRI mid-INfrared Disk Survey (MINDS) GTO program. Emission $^{12}$CO$_{2}$, $^{13}$CO$_{2}$, H$_{2}$O, HCN, C$_{2}$H$_{2}$, and OH is identified with $^{13}$CO$_{2}$ being detected for first time in a disk. characterize chemical physical conditions inner few au using these molecules as probes. The spectral resolution paired high signal-to-noise data essential to identify species determine...
Terrestrial and sub-Neptune planets are expected to form in the inner ($<10~$AU) regions of protoplanetary disks. Water plays a key role their formation, although it is yet unclear whether water molecules formed in-situ or transported from outer disk. So far Spitzer Space Telescope observations have only provided luminosity upper limits for dust-depleted disks, similar PDS 70, first system with direct confirmation protoplanet presence. Here we report JWST benchmark target search disk hosting...
The nearby Supernova 1987A was accompanied by a burst of neutrino emission, which indicates that compact object (a neutron star or black hole) formed in the explosion. There has been no direct observation this object. In work, we observe supernova remnant with JWST spectroscopy finding narrow infrared emission lines argon and sulphur. line is spatially unresolved blueshifted velocity relative to rest frame. We interpret as gas illuminated source ionizing photons located close center...
Abstract The study of protoplanetary disks has become increasingly important with the Kepler satellite finding that exoplanets are ubiquitous around stars in our galaxy and discovery enormous diversity planetary system architectures planet properties. High-resolution near-IR ALMA images show strong evidence for ongoing formation young disks. JWST MIRI mid-INfrared Disk Survey (MINDS) aims to (1) investigate chemical inventory terrestrial planet-forming zone across stellar spectral type, (2)...
Abstract We present here the first ever mid-infrared spectroscopic time series observation of transiting exoplanet L 168-9 b with Mid-Infrared Instrument (MIRI) on James Webb Space Telescope. The data were obtained as part MIRI commissioning activities, to characterize performance Low Resolution Spectroscopy (LRS) mode for these challenging observations. To assess LRS performance, we performed two independent analyses data. find that a single transit reached spectro-photometric precision ∼50...
MIRI/MRS on board the JWST allows us to probe inner regions of protoplanetary disks. Here we examine disk around classical T Tauri star Sz 98, which has an unusually large dust in millimetre with a compact core. We focus H$_2$O emission through both its ro-vibrational and pure rotational emission. Furthermore, compare our chemical findings those obtained for outer from Atacama Large Millimeter/submillimeter Array (ALMA) observations. In order model molecular features spectrum, continuum was...
Abstract The formation of stars and planets is accompanied not only by the build-up matter, namely accretion, but also its expulsion in form highly supersonic jets that can stretch for several parsecs 1,2 . As accretion jet activity are correlated because young acquire most their mass rapidly early on, powerful associated with youngest protostars 3 This period, however, coincides time when protostar surroundings hidden behind many magnitudes visual extinction. Millimetre interferometers...
Very low-mass stars (those <0.3 solar masses) host orbiting terrestrial planets more frequently than other types of stars, but the compositions those are largely unknown. We use mid-infrared spectroscopy with James Webb Space Telescope to investigate chemical composition planet-forming disk around ISO-ChaI 147, a 0.11 solar-mass star. The inner has carbon-rich chemistry: we identify emission from 13 carbon-bearing molecules including ethane and benzene. derive large column densities...
Abstract We present deep James Webb Space Telescope (JWST)/Mid-Infrared Instrument (MIRI) F560W observations of a flux-limited, Atacama Large Millimeter/submillimeter Array (ALMA)-selected sample 28 galaxies at z = 0.5–3.7 in the Hubble Ultra Deep Field (HUDF). The data from MIRI Imaging Survey (MIDIS) reveal stellar structure HUDF rest-frame wavelengths λ > 1 μ m for first time. revise mass estimates using new JWST photometry and find good agreement with pre-JWST analyses; few...
We present new near-infrared and optical spectroscopic observations that confirm the redshift of z = 1.44 extremely red object ERO J164502+4626.4 (object 10 Hu & Ridgway, formerly known as HR or [HR94] 10) a Hubble Space Telescope image reveals reflected S-shaped morphology at (rest-frame) near-ultraviolet wavelengths. The contrast between rest-frame far-red (λλ8200-9800 Å) near-UV (λλ2900-3900 morphologies suggests central regions galaxy are heavily obscured by dust is most likely an...
The understanding of planet formation has changed recently, embracing the new idea pebble accretion. This means that influx pebbles from outer regions planet-forming disks to their inner zones could determine composition planets and atmospheres. solid molecular components delivered region can be best characterized by mid-infrared spectroscopy. With Spitzer low-resolution (R = 100, 600) spectroscopy, this approach was limited detection abundant molecules, such as H2O, C2H2, HCN CO2....
Abstract We study the stellar population properties of 182 spectroscopically confirmed (MUSE/VLT) Ly α emitters (LAEs) and 450 photometrically selected Lyman-break galaxies (LBGs) at z = 2.8–6.7 in Hubble Extreme Deep Field. Leveraging combined power Space Telescope JWST NIRCam MIRI observations, we analyze their rest-frame UV-through-near-IR spectral energy distributions, with playing a crucial role robustly assessing LAEs’ masses ages. Our LAEs are low-mass objects <mml:math...
The Mid-Infrared Instrument (MIRI) aboard the James Webb Space Telescope (JWST) provides observatory with a huge advance in mid-infrared imaging and spectroscopy covering wavelength range of 5–28 µm. This paper describes performance characteristics MIRI imager as understood during commissioning activities, through its first year science operations. We discuss measurements results imager’s point spread function, flux calibration, background, distortion flat fields well pertaining to best...
Context . Understanding the physical conditions of circumstellar material around young stars is crucial to star and planet formation studies. In particular, very low-mass ( M ★ < 0.2 ⊙ ) are interesting sources characterize as they known host a diverse population rocky planets. Molecular atomic hydrogen lines can probe properties gas. Aims This work aims measure mass accretion rate, luminosity, more generally warm emitting gas in inner disk 2MASS-J16053215-1933159. We investigate source...
We present the observations of starburst galaxy M82 taken with <i>Herschel<i/> SPIRE Fourier-transform spectrometer. The spectrum (194–671 <i>μ<i/>m) shows a prominent CO rotational ladder from <i>J<i/> = 4–3 to 13–12 emitted by central region M82. fundamental properties gas are well constrained high lines observed for first time. Radiative transfer modeling these high-S/N <sup>12<sup/>CO and <sup>13<sup/>CO strongly indicates very warm molecular component at ~500 K pressure...
Context . The Medium Resolution integral field Spectrometer (MRS) of the Mid-Infrared Instrument (MIRI) on board James Webb Space Telescope (JWST) performs spectroscopy between 5 and 28 µm, with a view varying from ~13 to ~56 sq. arcsec. optics MRS introduce substantial distortion this needs be rectified in order reconstruct observed astrophysical scenario. Aims We aim use data JWST/MIRI commissioning cycle 1 calibration phase derive geometric astrometric solution, critical step data. These...