#niriss — Public Fediverse posts

Une planète et sa double queue d’hélium ont été découvertes à l’aide de «James-Webb»
https://nouvelles.umontreal.ca/article/2025/12/05/une-planete-et-sa-double-queue-d-helium-ont-ete-decouvertes-a-l-aide-de-james-webb
#science #UdM #astronomie #astrophysique #Webb #TSJW #planète #hélium #découverte #ASC #NIRISS

Une planète et sa double queue d’hélium ont été découvertes à l’aide de «James-Webb»
https://nouvelles.umontreal.ca/article/2025/12/05/une-planete-et-sa-double-queue-d-helium-ont-ete-decouvertes-a-l-aide-de-james-webb
#science #UdM #astronomie #astrophysique #Webb #TSJW #planète #hélium #découverte #ASC #NIRISS

Une planète et sa double queue d’hélium ont été découvertes à l’aide de «James-Webb»
https://nouvelles.umontreal.ca/article/2025/12/05/une-planete-et-sa-double-queue-d-helium-ont-ete-decouvertes-a-l-aide-de-james-webb
#science #UdM #astronomie #astrophysique #Webb #TSJW #planète #hélium #découverte #ASC #NIRISS

Une planète et sa double queue d’hélium ont été découvertes à l’aide de «James-Webb»
https://nouvelles.umontreal.ca/article/2025/12/05/une-planete-et-sa-double-queue-d-helium-ont-ete-decouvertes-a-l-aide-de-james-webb
#science #UdM #astronomie #astrophysique #Webb #TSJW #planète #hélium #découverte #ASC #NIRISS

Une planète et sa double queue d’hélium ont été découvertes à l’aide de «James-Webb»
https://nouvelles.umontreal.ca/article/2025/12/05/une-planete-et-sa-double-queue-d-helium-ont-ete-decouvertes-a-l-aide-de-james-webb
#science #UdM #astronomie #astrophysique #Webb #TSJW #planète #hélium #découverte #ASC #NIRISS

https://www.europesays.com/ie/210458/ Webb Detects Giant Clouds of Helium Leaking from WASP-107b #Ammonia #Atmosphere #AtmosphericEscape #CarbonDioxide #CarbonMonoxide #CSA #Éire #esa #Exoplanet #GasGiant #Helium #IE #Ireland #nasa #NIRISS #Science #SuperNeptune #SuperPuffExoplanet #WASP107 #WASP107b #Water #Webb

https://www.europesays.com/ie/150609/ Astronomers Create 3D Temperature Map of Hot-Jupiter WASP-18b #Atmosphere #CSA #Eclipse #EclipseMapping #Éire #esa #Exoplanet #GasGiant #HotJupiter #IE #Ireland #Map #nasa #NIRISS #Science #temperature #WASP18 #WASP18b #Webb

Webb vindt 6 vrije exoplaneten in NGC 1333

Met behulp van het Near-Infrared Imager and Slitless Spectrograph (NIRISS)-instrument van de Webb Space Telescope hebben astronomen zes nieuwe vrij zwevende planetaire objecten in NGC 1333 gevonden.

https://www.kuuke.nl/webb-vindt-6-vrije-exoplaneten-in-ngc-1333/

#BruineDwerg #CircumplanetaireSchijf #exoplaneet #NGC1333 #NIRISS #NIRISSNGC13335 #stervorming #VrijZwevendePlaneet #WebbSpaceTelescope

Dix découvertes fascinantes avec Webb rendues possibles grâce au Canada
▶️ Grâce à l'instrument canadien NIRISS (imageur et spectrographe sans fente dans le proche infrarouge) et aux chercheurs canadiens participants, le télescope Webb est en train de changer notre compréhension de l'Univers.
https://www.asc-csa.gc.ca/fra/blogue/2024/05/02/dix-decouvertes-fascinantes-avec-webb-rendues-possibles-grace-au-canada.asp
#astrophysique #découvertes #Webb #Canada #UdeM #Univers #cosmos #NIRISS

Dix découvertes fascinantes avec Webb rendues possibles grâce au Canada
▶️ Grâce à l'instrument canadien NIRISS (imageur et spectrographe sans fente dans le proche infrarouge) et aux chercheurs canadiens participants, le télescope Webb est en train de changer notre compréhension de l'Univers.
https://www.asc-csa.gc.ca/fra/blogue/2024/05/02/dix-decouvertes-fascinantes-avec-webb-rendues-possibles-grace-au-canada.asp
#astrophysique #découvertes #Webb #Canada #UdeM #Univers #cosmos #NIRISS

Dix découvertes fascinantes avec Webb rendues possibles grâce au Canada
▶️ Grâce à l'instrument canadien NIRISS (imageur et spectrographe sans fente dans le proche infrarouge) et aux chercheurs canadiens participants, le télescope Webb est en train de changer notre compréhension de l'Univers.
https://www.asc-csa.gc.ca/fra/blogue/2024/05/02/dix-decouvertes-fascinantes-avec-webb-rendues-possibles-grace-au-canada.asp
#astrophysique #découvertes #Webb #Canada #UdeM #Univers #cosmos #NIRISS

Dix découvertes fascinantes avec Webb rendues possibles grâce au Canada
▶️ Grâce à l'instrument canadien NIRISS (imageur et spectrographe sans fente dans le proche infrarouge) et aux chercheurs canadiens participants, le télescope Webb est en train de changer notre compréhension de l'Univers.
https://www.asc-csa.gc.ca/fra/blogue/2024/05/02/dix-decouvertes-fascinantes-avec-webb-rendues-possibles-grace-au-canada.asp
#astrophysique #découvertes #Webb #Canada #UdeM #Univers #cosmos #NIRISS

▶️ Une équipe d'astronomes ont mesuré les distances entre la Terre et 200 galaxies
▶️ Le décalage vers le rouge est une mesure précise de la distance d'une galaxie basée sur les signatures chimiques uniques observées dans son spectre
▶️ Le nouveau catalogue NIRISS de décalages vers le rouge
https://nouvelles.umontreal.ca/article/2023/10/30/une-equipe-d-astronomes-ont-mesure-les-distances-entre-la-terre-et-200-galaxies/
#astrophysique #science #Webb #UdeM #galaxies #NIRISS #astronomie

▶️ Une équipe d'astronomes ont mesuré les distances entre la Terre et 200 galaxies
▶️ Le décalage vers le rouge est une mesure précise de la distance d'une galaxie basée sur les signatures chimiques uniques observées dans son spectre
▶️ Le nouveau catalogue NIRISS de décalages vers le rouge
https://nouvelles.umontreal.ca/article/2023/10/30/une-equipe-d-astronomes-ont-mesure-les-distances-entre-la-terre-et-200-galaxies/
#astrophysique #science #Webb #UdeM #galaxies #NIRISS #astronomie

▶️ Une équipe d'astronomes ont mesuré les distances entre la Terre et 200 galaxies
▶️ Le décalage vers le rouge est une mesure précise de la distance d'une galaxie basée sur les signatures chimiques uniques observées dans son spectre
▶️ Le nouveau catalogue NIRISS de décalages vers le rouge
https://nouvelles.umontreal.ca/article/2023/10/30/une-equipe-d-astronomes-ont-mesure-les-distances-entre-la-terre-et-200-galaxies/
#astrophysique #science #Webb #UdeM #galaxies #NIRISS #astronomie

JWST Scans an Ultra-Hot Jupiter’s Atmosphere https://www.universetoday.com/161719/jwst-scans-an-ultra-hot-jupiters-atmosphere/ #exoplanetatmospheres #ultra-hotjupiters #atmosphere #exoplanets #astronomy #wasp-18b #heatmap #niriss #heat #jwst

JWST Scans an Ultra-Hot Jupiter’s Atmosphere https://www.universetoday.com/161719/jwst-scans-an-ultra-hot-jupiters-atmosphere/ #exoplanetatmospheres #ultra-hotjupiters #atmosphere #exoplanets #astronomy #wasp-18b #heatmap #niriss #heat #jwst

JWST Scans an Ultra-Hot Jupiter’s Atmosphere https://www.universetoday.com/161719/jwst-scans-an-ultra-hot-jupiters-atmosphere/ #exoplanetatmospheres #ultra-hotjupiters #atmosphere #exoplanets #astronomy #wasp-18b #heatmap #niriss #heat #jwst

The #JWST instrument #NIRISS has returned to science operations - it was recovered on January 27, and following a successful test observation, the instrument resumed normal science observations on January 30: https://www.stsci.edu/contents/news/jwst/2023/niriss-has-returned-to-science-operations

The #JWST instrument #NIRISS has returned to science operations - it was recovered on January 27, and following a successful test observation, the instrument resumed normal science observations on January 30: https://www.stsci.edu/contents/news/jwst/2023/niriss-has-returned-to-science-operations

The #JWST instrument #NIRISS has returned to science operations - it was recovered on January 27, and following a successful test observation, the instrument resumed normal science observations on January 30: https://www.stsci.edu/contents/news/jwst/2023/niriss-has-returned-to-science-operations

The #JWST instrument #NIRISS has returned to science operations - it was recovered on January 27, and following a successful test observation, the instrument resumed normal science observations on January 30: https://www.stsci.edu/contents/news/jwst/2023/niriss-has-returned-to-science-operations

The #JWST instrument #NIRISS has returned to science operations - it was recovered on January 27, and following a successful test observation, the instrument resumed normal science observations on January 30: https://www.stsci.edu/contents/news/jwst/2023/niriss-has-returned-to-science-operations

"Meilenstein für #Weltraumteleskop #JWST: bessere Exoplaneten-Atmosphären-Beobachtungen als je zuvor" "Beobachtungen des #Exoplanet.. #WASP39b mit dem James-Webb-Weltraumteleskop (#JWST) haben eine Fülle von Informationen über die Atmosphäre des Planeten geliefert. Eine Pressemitteilung des Max-Planck-Instituts für #Astronomie.": https://www.raumfahrer.net/meilenstein-fuer-weltraumteleskop-jwst-bessere-exoplaneten-atmosphaeren-beobachtungen-als-je-zuvor/ #MPIA #NIRCam #NIRISS #NIRSpec #Schwefeldioxid #Schwefelwasserstoff #Transitmethode

"Meilenstein für #Weltraumteleskop #JWST: bessere Exoplaneten-Atmosphären-Beobachtungen als je zuvor" "Beobachtungen des #Exoplanet.. #WASP39b mit dem James-Webb-Weltraumteleskop (#JWST) haben eine Fülle von Informationen über die Atmosphäre des Planeten geliefert. Eine Pressemitteilung des Max-Planck-Instituts für #Astronomie.": https://www.raumfahrer.net/meilenstein-fuer-weltraumteleskop-jwst-bessere-exoplaneten-atmosphaeren-beobachtungen-als-je-zuvor/ #MPIA #NIRCam #NIRISS #NIRSpec #Schwefeldioxid #Schwefelwasserstoff #Transitmethode

"Meilenstein für #Weltraumteleskop #JWST: bessere Exoplaneten-Atmosphären-Beobachtungen als je zuvor" "Beobachtungen des #Exoplanet.. #WASP39b mit dem James-Webb-Weltraumteleskop (#JWST) haben eine Fülle von Informationen über die Atmosphäre des Planeten geliefert. Eine Pressemitteilung des Max-Planck-Instituts für #Astronomie.": https://www.raumfahrer.net/meilenstein-fuer-weltraumteleskop-jwst-bessere-exoplaneten-atmosphaeren-beobachtungen-als-je-zuvor/ #MPIA #NIRCam #NIRISS #NIRSpec #Schwefeldioxid #Schwefelwasserstoff #Transitmethode

"Meilenstein für #Weltraumteleskop #JWST: bessere Exoplaneten-Atmosphären-Beobachtungen als je zuvor" "Beobachtungen des #Exoplanet.. #WASP39b mit dem James-Webb-Weltraumteleskop (#JWST) haben eine Fülle von Informationen über die Atmosphäre des Planeten geliefert. Eine Pressemitteilung des Max-Planck-Instituts für #Astronomie.": https://www.raumfahrer.net/meilenstein-fuer-weltraumteleskop-jwst-bessere-exoplaneten-atmosphaeren-beobachtungen-als-je-zuvor/ #MPIA #NIRCam #NIRISS #NIRSpec #Schwefeldioxid #Schwefelwasserstoff #Transitmethode

1️⃣ 2️⃣ The series of #Nature papers also reports the same transmission spectrum with 2 other instruments on board #JWST: #NIRISS in the paper led by @afeinstein20 et al. and #NIRCam in the paper led by @eahrer et al.
The spectra revealed again a lot of features with a higher resolution than #NIRSpec / PRISM.

What is (really) super impressive is the fact the 3 instruments / 4 modes give nearly the same signal, with basically no systematic at all.

#astronomy #exoplanet

1️⃣ 2️⃣ The series of #Nature papers also reports the same transmission spectrum with 2 other instruments on board #JWST: #NIRISS in the paper led by @afeinstein20 et al. and #NIRCam in the paper led by @eahrer et al.
The spectra revealed again a lot of features with a higher resolution than #NIRSpec / PRISM.

What is (really) super impressive is the fact the 3 instruments / 4 modes give nearly the same signal, with basically no systematic at all.

#astronomy #exoplanet

1️⃣ 2️⃣ The series of #Nature papers also reports the same transmission spectrum with 2 other instruments on board #JWST: #NIRISS in the paper led by @afeinstein20 et al. and #NIRCam in the paper led by @eahrer et al.
The spectra revealed again a lot of features with a higher resolution than #NIRSpec / PRISM.

What is (really) super impressive is the fact the 3 instruments / 4 modes give nearly the same signal, with basically no systematic at all.

#astronomy #exoplanet

1️⃣ 2️⃣ The series of #Nature papers also reports the same transmission spectrum with 2 other instruments on board #JWST: #NIRISS in the paper led by @afeinstein20 et al. and #NIRCam in the paper led by @eahrer et al.
The spectra revealed again a lot of features with a higher resolution than #NIRSpec / PRISM.

What is (really) super impressive is the fact the 3 instruments / 4 modes give nearly the same signal, with basically no systematic at all.

#astronomy #exoplanet

1️⃣ 2️⃣ The series of #Nature papers also reports the same transmission spectrum with 2 other instruments on board #JWST: #NIRISS in the paper led by @afeinstein20 et al. and #NIRCam in the paper led by @eahrer et al.
The spectra revealed again a lot of features with a higher resolution than #NIRSpec / PRISM.

What is (really) super impressive is the fact the 3 instruments / 4 modes give nearly the same signal, with basically no systematic at all.

#astronomy #exoplanet

4️⃣ We knew that its #atmosphere was revealing water (H2O), carbon dioxide (CO2) as well as sodium (Na) and potassium (K). It was therefore a very good target to #test the instrumental capabilities of #JWST in the near infrared (#NIR).

The objective of the team was therefore to observe that unique object with all instrumental modes of #JWST in the #NIR, to learn about the instrument and understand its limitations (if any). They used #NIRSpec (in 2 different modes), #NIRCAM, and #NIRISS.

4️⃣ We knew that its #atmosphere was revealing water (H2O), carbon dioxide (CO2) as well as sodium (Na) and potassium (K). It was therefore a very good target to #test the instrumental capabilities of #JWST in the near infrared (#NIR).

The objective of the team was therefore to observe that unique object with all instrumental modes of #JWST in the #NIR, to learn about the instrument and understand its limitations (if any). They used #NIRSpec (in 2 different modes), #NIRCAM, and #NIRISS.

4️⃣ We knew that its #atmosphere was revealing water (H2O), carbon dioxide (CO2) as well as sodium (Na) and potassium (K). It was therefore a very good target to #test the instrumental capabilities of #JWST in the near infrared (#NIR).

The objective of the team was therefore to observe that unique object with all instrumental modes of #JWST in the #NIR, to learn about the instrument and understand its limitations (if any). They used #NIRSpec (in 2 different modes), #NIRCAM, and #NIRISS.

4️⃣ We knew that its #atmosphere was revealing water (H2O), carbon dioxide (CO2) as well as sodium (Na) and potassium (K). It was therefore a very good target to #test the instrumental capabilities of #JWST in the near infrared (#NIR).

The objective of the team was therefore to observe that unique object with all instrumental modes of #JWST in the #NIR, to learn about the instrument and understand its limitations (if any). They used #NIRSpec (in 2 different modes), #NIRCAM, and #NIRISS.

4️⃣ We knew that its #atmosphere was revealing water (H2O), carbon dioxide (CO2) as well as sodium (Na) and potassium (K). It was therefore a very good target to #test the instrumental capabilities of #JWST in the near infrared (#NIR).

The objective of the team was therefore to observe that unique object with all instrumental modes of #JWST in the #NIR, to learn about the instrument and understand its limitations (if any). They used #NIRSpec (in 2 different modes), #NIRCAM, and #NIRISS.

Each instrument is using a different broadband filter in the LMC here.

#NIRcam: 2 micron
#NIRSpec: 1.1 micron
#NIRISS: 1.5 micron
#MIRI: 7.7 micron

Each instrument is using a different broadband filter in the LMC here.

#NIRcam: 2 micron
#NIRSpec: 1.1 micron
#NIRISS: 1.5 micron
#MIRI: 7.7 micron

#JWST has finished alignment and has released the first fully focused images from all instruments!! 🤩🤩🤩 Commissioning now continues, shifting focus to calibrating #NIRCam, #MIRI, #NIRISS and #NIRSpec. #Astronomy #Space https://blogs.nasa.gov/webb/2022/04/28/nasas-webb-in-full-focus-ready-for-instrument-commissioning/

#JWST has finished alignment and has released the first fully focused images from all instruments!! 🤩🤩🤩 Commissioning now continues, shifting focus to calibrating #NIRCam, #MIRI, #NIRISS and #NIRSpec. #Astronomy #Space https://blogs.nasa.gov/webb/2022/04/28/nasas-webb-in-full-focus-ready-for-instrument-commissioning/