M. Matsuura
YOU?
Author Swipe
View article: JWST Observations of SN 2023ixf. II. The Panchromatic Evolution between 250 and 720 Days after the Explosion
JWST Observations of SN 2023ixf. II. The Panchromatic Evolution between 250 and 720 Days after the Explosion Open
We present the nebular phase spectroscopic and photometric observations of the nearby hydrogen-rich core-collapse supernova (CCSN) SN 2023ixf, obtained through our JWST programs. These observations, combined with ground-based optical and n…
View article: JWST/NIRCam Imaging of the Bipolar Planetary Nebula NGC 6537: The (Infra)red Spider, Revealed
JWST/NIRCam Imaging of the Bipolar Planetary Nebula NGC 6537: The (Infra)red Spider, Revealed Open
We present James Webb Space Telescope (JWST) Near-Infrared Camera (NIRCam) Br α , H 2 , [Fe ii ], and polycyclic aromatic hydrocarbon (PAH) imaging of the molecule-rich, high-excitation bipolar planetary nebula (PN) NGC 6537 (the Red Spide…
View article: The Compact Object and Innermost Ejecta of SN 1987A
The Compact Object and Innermost Ejecta of SN 1987A Open
The first JWST observations of SN 1987A provided clear evidence that a compact object is ionizing the innermost ejecta. Here, we analyze a second epoch of JWST NIRSpec and MIRI/Medium-Resolution Spectrometer observations to better characte…
View article: The <i>JWST</i>/MIRI view of the planetary nebula NGC 6302 – I. A UV-irradiated torus and a hot bubble triggering PAH formation
The <i>JWST</i>/MIRI view of the planetary nebula NGC 6302 – I. A UV-irradiated torus and a hot bubble triggering PAH formation Open
NGC 6302 is a spectacular bipolar planetary nebula (PN) whose spectrum exhibits fast outflows and highly ionized emission lines, indicating the presence of a very hot central star (${\sim}$220 000 K). Its infrared spectrum reveals a mixed …
View article: JWST Observations of SN 2023ixf I: Completing the Early Multi-Wavelength Picture with Plateau-phase Spectroscopy
JWST Observations of SN 2023ixf I: Completing the Early Multi-Wavelength Picture with Plateau-phase Spectroscopy Open
We present and analyze panchromatic (0.35--14 $μ$m) spectroscopy of the Type II supernova 2023ixf, including near- and mid-infrared spectra obtained 33.6 days after explosion during the plateau-phase, with the James Webb Space Telescope (J…
View article: <i>JWST</i> observations of the Ring Nebula (NGC 6720) – II. PAH emission
<i>JWST</i> observations of the Ring Nebula (NGC 6720) – II. PAH emission Open
Polycyclic aromatic hydrocarbons (PAHs) and carbonaceous dust have been observed in clumpy circumstellar environments, yet their formation and evolutionary pathways in such environments remain elusive. We aim to characterize the PAH emissi…
View article: JWST Observations of the Ring Nebula (NGC 6720). III. A Dusty Disk around Its Central Star
JWST Observations of the Ring Nebula (NGC 6720). III. A Dusty Disk around Its Central Star Open
The planetary nebula NGC 6720, also known as the “Ring Nebula,” is one of the most iconic examples of nearby planetary nebulae whose morphologies present a challenge to our theoretical understanding of the processes that govern the deaths …
View article: Flexible porous microneedle array for bioelectric skin patch
Flexible porous microneedle array for bioelectric skin patch Open
Microneedles with porous internal structures can provide pathways for transdermal ionic current and drug delivery by penetrating the stratum corneum of the skin. However, conventional porous microneedle arrays are typically monolithic and …
View article: PRIMA promise of deciphering interstellar dust evolution with observations of the nearby Universe
PRIMA promise of deciphering interstellar dust evolution with observations of the nearby Universe Open
International audience
View article: The planetary nebula NGC 3132 revisited: high definition 3D photoionization model
The planetary nebula NGC 3132 revisited: high definition 3D photoionization model Open
We present a detailed 3D photoionization model of the planetary nebula NGC 3132, constrained by the latest observations. Using the mocassin code, the model incorporates integrated and spatially resolved spectroscopy, velocity-resolved line…
View article: The planetary nebula NGC 3132 revisited: high definition 3D photoionization model
The planetary nebula NGC 3132 revisited: high definition 3D photoionization model Open
We present a detailed 3D photoionization model of the planetary nebula NGC 3132, constrained by the latest observations. Using the MOCASSIN code, the model incorporates integrated and spatially resolved spectroscopy, velocity-resolved line…
View article: The Green Monster Hiding in Front of Cas A: JWST Reveals a Dense and Dusty Circumstellar Structure Pockmarked by Ejecta Interactions
The Green Monster Hiding in Front of Cas A: JWST Reveals a Dense and Dusty Circumstellar Structure Pockmarked by Ejecta Interactions Open
JWST observations of the young Galactic supernova remnant Cassiopeia A revealed an unexpected structure seen as a green emission feature in colored composite MIRI F1130W and F1280W images—hence dubbed the Green Monster—that stretches acros…
View article: Temporal Changes in the Infrared Spectra of Magellanic Carbon Stars
Temporal Changes in the Infrared Spectra of Magellanic Carbon Stars Open
The Medium-Resolution Spectrometer on the Mid-Infrared Instrument on the JWST obtained spectra of three carbon stars in the Large Magellanic Cloud. Two of the spectra differ significantly from spectra obtained ∼16–19 years earlier with the…
View article: The Green Monster hiding in front of Cas A: JWST reveals a dense and dusty circumstellar structure pockmarked by ejecta interactions
The Green Monster hiding in front of Cas A: JWST reveals a dense and dusty circumstellar structure pockmarked by ejecta interactions Open
JWST observations of the young Galactic supernova remnant Cassiopeia A revealed an unexpected structure seen as a green emission feature in colored composite MIRI F1130W and F1280W images - hence dubbed the Green Monster - that stretches a…
View article: Deep <i>JWST</i>/NIRCam imaging of Supernova 1987A
Deep <i>JWST</i>/NIRCam imaging of Supernova 1987A Open
JWST/NIRCam obtained high angular resolution (0.05–0.1 arcsec), deep near-infrared 1–5 $\mu$m imaging of Supernova (SN) 1987A taken 35 yr after the explosion. In the NIRCam images, we identify: (1) faint H2 crescents, which are emissions l…
View article: Shockingly Bright Warm Carbon Monoxide Molecular Features in the Supernova Remnant Cassiopeia A Revealed by JWST
Shockingly Bright Warm Carbon Monoxide Molecular Features in the Supernova Remnant Cassiopeia A Revealed by JWST Open
We present JWST NIRCam (F356W and F444W filters) and MIRI (F770W) images and NIRSpec Integral Field Unit (IFU) spectroscopy of the young Galactic supernova remnant Cassiopeia A (Cas A) to probe the physical conditions for molecular CO form…
View article: Shockingly Bright Warm Carbon Monoxide Molecular Features in the Supernova Remnant Cassiopeia A Revealed by JWST
Shockingly Bright Warm Carbon Monoxide Molecular Features in the Supernova Remnant Cassiopeia A Revealed by JWST Open
We present JWST NIRCam (F356W and F444W filters) and MIRI (F770W) images and NIRSpec- IFU spectroscopy of the young supernova remnant Cassiopeia A (Cas A). We obtained the data as part of a JWST survey of Cas A. The NIRCam and MIRI images …
View article: Hubble Space Telescope Images of SN 1987A: Evolution of the Ejecta and the Equatorial Ring from 2009 to 2022
Hubble Space Telescope Images of SN 1987A: Evolution of the Ejecta and the Equatorial Ring from 2009 to 2022 Open
Supernova (SN) 1987A offers a unique opportunity to study how a spatially resolved SN evolves into a young SN remnant. We present and analyze Hubble Space Telescope (HST) imaging observations of SN 1987A obtained in 2022 and compare them w…
View article: A JWST Survey of the Supernova Remnant Cassiopeia A
A JWST Survey of the Supernova Remnant Cassiopeia A Open
We present initial results from a James Webb Space Telescope (JWST) survey of the youngest Galactic core-collapse supernova remnant, Cassiopeia A (Cas A), made up of NIRCam and MIRI imaging mosaics that map emission from the main shell, in…
View article: Hubble Space Telescope images of SN 1987A: Evolution of the ejecta and the equatorial ring from 2009 to 2022
Hubble Space Telescope images of SN 1987A: Evolution of the ejecta and the equatorial ring from 2009 to 2022 Open
Supernova (SN) 1987A offers a unique opportunity to study how a spatially resolved SN evolves into a young supernova remnant (SNR). We present and analyze Hubble Space Telescope (HST) imaging observations of SN 1987A obtained in 2022 and c…
View article: Data products and software for `X-ray diagnostics of Cassiopeia A's "Green Monster": evidence for dense shocked circumstellar plasma`
Data products and software for `X-ray diagnostics of Cassiopeia A's "Green Monster": evidence for dense shocked circumstellar plasma` Open
Data Reproduction Package for the publication ‘X-ray diagnostics of Cassiopeia A’s “Green Monster”: evidence for dense shocked circumstellar plasma’ Authors: Jacco Vink, Manan Agarwal, Patrick Slane, Ilse De Looze, Dan Milisavljevic, Danie…
View article: <i>JWST</i> observations of the Ring Nebula (NGC 6720): I. Imaging of the rings, globules, and arcs
<i>JWST</i> observations of the Ring Nebula (NGC 6720): I. Imaging of the rings, globules, and arcs Open
We present JWST images of the well-known planetary nebula NGC 6720 (the Ring Nebula), covering wavelengths from 1.6 to 25 $\, \mu$m. The bright shell is strongly fragmented with some 20 000 dense globules, bright in H2, with a characterist…
View article: JWST NIRCam Observations of SN 1987A: Spitzer Comparison and Spectral Decomposition
JWST NIRCam Observations of SN 1987A: Spitzer Comparison and Spectral Decomposition Open
JWST Near Infrared Camera (NIRCam) observations at 1.5–4.5 μ m have provided broadband and narrowband imaging of the evolving remnant of SN 1987A with unparalleled sensitivity and spatial resolution. Comparing with previous marginally spat…
View article: Dust formation in AGB stars and planetary nebulae
Dust formation in AGB stars and planetary nebulae Open
A high sensitivity and high-angular resolutions infrared space telescope, the James Webb Space Telescope (JWST) , allowed us to study dust and molecules in unprecedented details. This contribution highlights the first year of JWST ’s scien…
View article: JWST imaging observations of the Ring Nebula
JWST imaging observations of the Ring Nebula Open
We present JWST images of NGC 6720 (the Ring Nebula), covering wavelengths from 1.6 μ m to 25 μ m. The bright shell is strongly fragmented with some 20 000 dense globules, bright in H 2 , with a characteristic diameter of 0.2 arcsec and de…
View article: JWST NIRCam Observations of SN 1987A: Spitzer Comparison and Spectral Decomposition
JWST NIRCam Observations of SN 1987A: Spitzer Comparison and Spectral Decomposition Open
JWST NIRCam observations at 1.5-4.5 $μ$m have provided broad and narrow band imaging of the evolving remnant of SN 1987A with unparalleled sensitivity and spatial resolution. Comparing with previous marginally spatially resolved Spitzer IR…
View article: Evidence for late-time dust formation in the ejecta of supernova SN 1995N from emission-line asymmetries
Evidence for late-time dust formation in the ejecta of supernova SN 1995N from emission-line asymmetries Open
We present a study of the dust associated with the core-collapse supernova SN 1995N. Infrared emission detected 14–15 yr after the explosion was previously attributed to thermally echoing circumstellar material (CSM) associated with the su…
View article: Evidence for late-time dust formation in the ejecta of supernova SN~1995N from emission-line asymmetries
Evidence for late-time dust formation in the ejecta of supernova SN~1995N from emission-line asymmetries Open
We present a study of the dust associated with the core-collapse supernova SN~1995N. Infrared emission detected 14--15 years after the explosion was previously attributed to thermally echoing circumstellar material associated with the SN p…
View article: JWST observations of the Ring Nebula (NGC 6720): I. Imaging of the rings, globules, and arcs
JWST observations of the Ring Nebula (NGC 6720): I. Imaging of the rings, globules, and arcs Open
We present JWST images of the well-known planetary nebula NGC 6720 (the Ring Nebula), covering wavelengths from 1.6$μ$m to 25 $μ$m. The bright shell is strongly fragmented with some 20 000 dense globules, bright in H$_2$, with a characteri…
View article: The messy death of a multiple star system and the resulting planetary nebula as observed by JWST
The messy death of a multiple star system and the resulting planetary nebula as observed by JWST Open
Planetary nebulae (PNe), the ejected envelopes of red giant stars, provide us with a history of the last, mass-losing phases of 90 percent of stars initially more massive than the Sun. Here, we analyse James Webb Space Telescope (JWST) Ear…