Details

Autor(en) / Beteiligte

• Doyon, René
• Willott, Chris J.
• Hutchings, John B.
• Sivaramakrishnan, Anand
• Albert, Loïc
• Lafrenière, David
• Rowlands, Neil
• Begoña Vila, M.
• Martel, André R.
• LaMassa, Stephanie
• Aldridge, David
• Artigau, Étienne
• Cameron, Peter
• Chayer, Pierre
• Cook, Neil J.
• Cooper, Rachel A.
• Darveau-Bernier, Antoine
• Dupuis, Jean
• Earnshaw, Colin
• Espinoza, Néstor
• Filippazzo, Joseph C.
• Fullerton, Alexander W.
• Gaudreau, Daniel
• Gawlik, Roman
• Goudfrooij, Paul
• Haley, Craig
• Kammerer, Jens
• Kendall, David
• Lambros, Scott D.
• Ignat, Luminita Ilinca
• Maszkiewicz, Michael
• McColgan, Ashley
• Morishita, Takahiro
• Ouellette, Nathalie N.-Q.
• Pacifici, Camilla
• Philippi, Natasha
• Radica, Michael
• Ravindranath, Swara
• Rowe, Jason
• Roy, Arpita
• Roy, Niladri
• Saad, Karl
• Sohn, Sangmo Tony
• Talens, Geert Jan
• Touahri, Driss
• Thatte, Deepashri
• Taylor, Joanna M.
• Vandal, Thomas
• Volk, Kevin
• Wander, Michel
• Warner, Gerald
• Zheng, Sheng-Hai
• Zhou, Julia
• Abraham, Roberto
• Beaulieu, Mathilde
• Benneke, Björn
• Ferrarese, Laura
• Jayawardhana, Ray
• Johnstone, Doug
• Kaltenegger, Lisa
• Meyer, Michael R.
• Pipher, Judy L.
• Rameau, Julien
• Rieke, Marcia
• Salhi, Salma
• Sawicki, Marcin

Titel

The Near Infrared Imager and Slitless Spectrograph for the James Webb Space Telescope. I. Instrument Overview and In-flight Performance

Ist Teil von

• Publications of the Astronomical Society of the Pacific, 2023-09, Vol.135 (1051), p.98001

Ort / Verlag

Philadelphia: The Astronomical Society of the Pacific

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Abstract The Near-Infrared Imager and Slitless Spectrograph (NIRISS) is the science module of the Canadian-built Fine Guidance Sensor onboard the James Webb Space Telescope (JWST). NIRISS has four observing modes: (1) broadband imaging featuring seven of the eight NIRCam broadband filters, (2) wide-field slitless spectroscopy at a resolving power of ∼150 between 0.8 and 2.2 μ m, (3) single-object cross-dispersed slitless spectroscopy (SOSS) enabling simultaneous wavelength coverage between 0.6 and 2.8 μ m at R ∼ 700, a mode optimized for exoplanet spectroscopy of relatively bright ( J < 6.3) stars and (4) aperture masking interferometry (AMI) between 2.8 and 4.8 μ m enabling high-contrast (∼10 −3 − 10 −4 ) imaging at angular separations between 70 and 400 mas for relatively bright ( M < 8) sources. This paper presents an overview of the NIRISS instrument, its design, its scientific capabilities, and a summary of in-flight performance. NIRISS shows significantly better response shortward of ∼2.5 μ m resulting in 10%–40% sensitivity improvement for broadband and low-resolution spectroscopy compared to pre-flight predictions. Two time-series observations performed during instrument commissioning in the SOSS mode yield very stable spectro-photometry performance within ∼10% of the expected noise. The first space-based companion detection of the tight binary star AB Dor AC through AMI was demonstrated.