A. Coulais
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View article: MIRI-LRS Spectrum of a Cold Exoplanet around a White Dwarf: Water, Ammonia, and Methane Measurements
MIRI-LRS Spectrum of a Cold Exoplanet around a White Dwarf: Water, Ammonia, and Methane Measurements Open
The study of the atmosphere of exoplanets orbiting white dwarfs is a largely unexplored field. With WD 0806-661 b, we present the first deep dive into the atmospheric physics and chemistry of a cold exoplanet around a white dwarf. We obser…
View article: HCN and C<sub>2</sub>H<sub>2</sub> in the Atmosphere of a T8.5+T9 Brown Dwarf Binary
HCN and C<sub>2</sub>H<sub>2</sub> in the Atmosphere of a T8.5+T9 Brown Dwarf Binary Open
T-type brown dwarfs present an opportunity to explore atmospheres teeming with molecules such as H 2 O, CH 4 , and NH 3 , which exhibit a wealth of absorption features in the mid-infrared. With JWST, we can finally explore this chemistry i…
View article: HCN and C2H2 in the atmosphere of a T8.5+T9 brown dwarf binary
HCN and C2H2 in the atmosphere of a T8.5+T9 brown dwarf binary Open
T-type brown dwarfs present an opportunity to explore atmospheres teeming with molecules such as H2O, CH4 and NH3, which exhibit a wealth of absorption features in the mid-infrared. With JWST, we can finally explore this chemistry in detai…
View article: GDL 1.1, a smart and green language
GDL 1.1, a smart and green language Open
GDL, a free interpreter for the IDL language, continues to develop smoothly, driven by feedback and requests from an increasingly active and growing user base, especially since GDL was made available on GitHub. Among the most notable featu…
View article: Combined analysis of the 12.8 and 15 µm JWST/MIRI eclipse observations of TRAPPIST-1 b
Combined analysis of the 12.8 and 15 µm JWST/MIRI eclipse observations of TRAPPIST-1 b Open
International audience
View article: JWST MIRI flight performance: Imaging
JWST MIRI flight performance: Imaging Open
The Mid-Infrared Instrument (MIRI) aboard the James Webb Space Telescope (JWST) provides the observatory with a huge advance in mid-infrared imaging and spectroscopy covering the wavelength range of 5–28 µm. This paper describes the perfor…
View article: Imaging detection of the inner dust belt and the four exoplanets in the HR 8799 system with JWST’s MIRI coronagraph
Imaging detection of the inner dust belt and the four exoplanets in the HR 8799 system with JWST’s MIRI coronagraph Open
Context . The MIRI instrument on board JWST is now offering high-contrast imaging capacity at mid-IR wavelengths, thereby opening a completely new field of investigation for characterizing young exoplanetary systems. Aims . The multiplanet…
View article: JWST MIRI Imager Observations of Supernova SN 1987A
JWST MIRI Imager Observations of Supernova SN 1987A Open
There exist very few mid-infrared (IR) observations of supernovae (SNe) in general. Therefore, SN 1987A, the closest visible SN in 400 yr, gives us the opportunity to explore the mid-IR properties of SNe, the dust in their ejecta, and the …
View article: JWST MIRI Flight Performance: Imaging
JWST MIRI Flight Performance: Imaging Open
The Mid-Infrared Instrument (MIRI) aboard the James Webb Space Telescope (JWST) provides the observatory with a huge advance in mid-infrared imaging and spectroscopy covering the wavelength range of 5 to 28 microns. This paper describes th…
View article: Emission lines due to ionizing radiation from a compact object in the remnant of Supernova 1987A
Emission lines due to ionizing radiation from a compact object in the remnant of Supernova 1987A Open
The nearby Supernova 1987A was accompanied by a burst of neutrino emission, which indicates that a compact object (a neutron star or black hole) was formed in the explosion. There has been no direct observation of this compact object. In t…
View article: JWST MIRI Imager Observations of Supernova SN 1987A
JWST MIRI Imager Observations of Supernova SN 1987A Open
There exist very few mid-infrared (IR) observations of supernovae (SNe) in general. Therefore, SN 1987A, the closest visible SN in 400 years, gives us the opportunity to explore the mid-IR properties of SNe, the dust in their ejecta and su…
View article: Combined analysis of the 12.8 and 15 microns JWST/MIRI eclipse observations of TRAPPIST-1 b
Combined analysis of the 12.8 and 15 microns JWST/MIRI eclipse observations of TRAPPIST-1 b Open
The first JWST/MIRI photometric observations of TRAPPIST-1 b allowed for the detection of the thermal emission of the planet at 15 μm, suggesting that the planet could be a bare rock with a zero albedo and no redistribution of heat. Here w…
View article: Ejecta, Rings, and Dust in SN 1987A with JWST MIRI/MRS
Ejecta, Rings, and Dust in SN 1987A with JWST MIRI/MRS Open
Supernova (SN) 1987A is the nearest supernova in $\sim$400 years. Using the {\em JWST} MIRI Medium Resolution Spectrograph, we spatially resolved the ejecta, equatorial ring (ER) and outer rings in the mid-infrared 12,927 days after the ex…
View article: Ejecta, Rings, and Dust in SN 1987A with JWST MIRI/MRS
Ejecta, Rings, and Dust in SN 1987A with JWST MIRI/MRS Open
Supernova (SN) 1987A is the nearest supernova in ∼400 yr. Using the JWST MIRI Medium Resolution Spectrograph, we spatially resolved the ejecta, equatorial ring (ER), and outer rings in the mid-infrared 12,927 days (35.4 yr) after the explo…
View article: SO2, silicate clouds, but no CH4 detected in a warm Neptune with JWST MIRI
SO2, silicate clouds, but no CH4 detected in a warm Neptune with JWST MIRI Open
The chemical composition of planetary atmospheres bears the imprint of their formation and evolution 1,2 . Recently, the significance of photochemistry was highlighted through the assignment of sulphur dioxide (SO 2 ) as carrier of a featu…
View article: JWST NIRSpec Observations of Supernova 1987A—From the Inner Ejecta to the Reverse Shock
JWST NIRSpec Observations of Supernova 1987A—From the Inner Ejecta to the Reverse Shock Open
We present initial results from JWST NIRSpec integral field unit observations of the nearby supernova SN 1987A. The observations provide the first spatially resolved spectroscopy of the ejecta and equatorial ring (ER) over the 1–5 μ m rang…
View article: Planck intermediate results XI. The gas content of dark matter halos: The sunyaev-zeldovich-stellar mass relation for locally brightest galaxies
Planck intermediate results XI. The gas content of dark matter halos: The sunyaev-zeldovich-stellar mass relation for locally brightest galaxies Open
We present the scaling relation between Sunyaev-Zeldovich (SZ) signal and stellar mass for almost 260,000 locally brightest galaxies (LBGs) selected from the Sloan Digital Sky Survey (SDSS). These are predominantly the central galaxies of …
View article: The Mid-infrared Instrument for JWST and Its In-flight Performance
The Mid-infrared Instrument for JWST and Its In-flight Performance Open
The Mid-Infrared Instrument (MIRI) extends the reach of the James Webb Space Telescope (JWST) to 28.5 μ m. It provides subarcsecond-resolution imaging, high sensitivity coronagraphy, and spectroscopy at resolutions of λ /Δ λ ∼ 100–3500, wi…
View article: Spectroscopic Time Series Performance of the Mid-infrared Instrument on the JWST
Spectroscopic Time Series Performance of the Mid-infrared Instrument on the JWST Open
We present here the first ever mid-infrared spectroscopic time series observation of the transiting exoplanet L 168-9 b with the Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope. The data were obtained as part of the MIRI c…
View article: JWST NIRSpec observations of Supernova 1987A -- from the inner ejecta to the reverse shock
JWST NIRSpec observations of Supernova 1987A -- from the inner ejecta to the reverse shock Open
We present initial results from JWST NIRSpec integral field unit observations of the nearby Supernova (SN) 1987A. The observations provide the first spatially-resolved spectroscopy of the ejecta and equatorial ring (ER) over the 1-5 μm ran…
View article: GNU Data Language 1.0: a free/libre and open-sourcedrop-in replacement for IDL/PV-WAVE
GNU Data Language 1.0: a free/libre and open-sourcedrop-in replacement for IDL/PV-WAVE Open
International audience
View article: Spectroscopic time series performance of the Mid-Infrared Instrument on the JWST
Spectroscopic time series performance of the Mid-Infrared Instrument on the JWST Open
We present here the first ever mid-infrared spectroscopic time series observation of the transiting exoplanet \object{L 168-9 b} with the Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope. The data were obtained as part of t…
View article: Overdensity of SubMillimiter Galaxies in the GJ526 Field mapped with the NIKA2 Camera
Overdensity of SubMillimiter Galaxies in the GJ526 Field mapped with the NIKA2 Camera Open
Using the NIKA2 dual band millimeter camera installed on the IRAM30m telescope, we have mapped a relatively large field (~ 70 arcmin 2 ) in the direction of the star GJ526 to investigate the nature of the sources found with the MAMBO camer…
View article: <scp>mirisim</scp>: a simulator for the Mid-Infrared Instrument on <i>JWST</i>
<span>mirisim</span>: a simulator for the Mid-Infrared Instrument on <i>JWST</i> Open
The Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope (JWST), has imaging, four coronagraphs, and both low and medium resolution spectroscopic modes. Being able to simulate MIRI observations will help commissioning of the in…
View article: Planck 2015 results XIX. Constraints on primordial magnetic fields
Planck 2015 results XIX. Constraints on primordial magnetic fields Open
The Planck Collaboration acknowledges the support of: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MINECO, JA, and RES (Spain); Tekes, AoF, and CSC (Finland); DLR and…
View article: GDL today: Reaching a viable alternative to IDL
GDL today: Reaching a viable alternative to IDL Open
We report at the ADASS XXVII session the progresses made by GDL, the free clone of the proprietary IDL software. We argue that GDL can replace IDL for everyday use.
View article: Planck 2013 results. XIV. Zodiacal emission
Planck 2013 results. XIV. Zodiacal emission Open
The Planck satellite provides a set of all-sky maps at nine frequencies from 30 GHz to 857 GHz. Planets, minor bodies, and diffuse interplanetary dust emission (IPD) are all observed. The IPD can be separated from Galactic and other emissi…