Optical throughput and sensitivity of JWST NIRSpec
G. Giardino, R. Bhatawdekar, S. M. Birkmann, P. Ferruit, T. Rawle, C. Alves de Oliveira, T. Boeker, P. Jakobsen, N. Kumari, M. Lopez-Caniego, N. Luetzgendorf, E… 展开作者
G. Giardino, R. Bhatawdekar, S. M. Birkmann, P. Ferruit, T. Rawle, C. Alves de Oliveira, T. Boeker, P. Jakobsen, N. Kumari, M. Lopez-Caniego, N. Luetzgendorf, E. Manjavacas, C. Proffitt, M. Sirianni, M. Te Plate, P. Zeidler
备注：
7 pages, 6 figures - to appear in Proceedings of SPIE conference "Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave"
To achieve its ambitious scientific goals, the Near-Infrared Spectrograph, NIRSpec, on board the Webb Space Telescope, needs to meet very demanding throughput requirements, here quantified in terms of photon-conversion efficiency (PCE). During the calibration activities performed for the instrument commissioning, we have obtained the first in-flight measurements of its PCE and also updated the modeling of the light losses occurring in the NIRSpec slit devices. The measured PCE of NIRSpec fixed-slit and multi-object spectroscopy modes overall meets or exceeds the pre-launch model predictions. The results are more contrasted for the integral-field spectroscopy mode, where the differences with the model can reach -20%, above 4 micron, and exceed +30%, below 2 micron. Additionally, thanks to the high quality of the JWST point-spread function, our slit-losses, at the shorter wavelength, are significantly decreased with respect to the pre-flight modeling. These results, combined with the confirmed low noise performance of the detectors, make of NIRSpec an exceptionally sensitive spectrograph.
NASA Goddard Space Flight Center（美国国家航空航天局戈达德太空飞行中心）；Observational Cosmology Laboratory（观测宇宙学实验室）；Center for Research and Exploration in Space Science and Technology（空间科学与技术研究探索中心）
An empirical calibration of the spectral resolution of JWST NIRSpec PRISM
School of Astronomy and Space Science, University of Chinese Academy of Sciences (UCAS)（中国科学院大学天文与空间科学学院）；National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台）；Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University（北京师范大学天文与空间科学学院前沿天文与天体物理研究所）；Centre for Astrophysics and Supercomputing, Swinburne University of Technology（斯威本科技大学天体物理学与超算中心）；Sydney Institute for Astronomy, School of Physics, The University of Sydney（悉尼大学物理学院悉尼天文学研究所）；Kavli Institute for Astronomy and Astrophysics, Peking University（北京大学科维理天文与天体物理研究所）
Quantifying Spectroscopic Flux Variations Between JWST NIRISS and NIRSpec: Slit Losses in Emission Line Measurements of z$\sim$1-3 Galaxies
University of Melbourne（墨尔本大学）；ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D)（三维全天空天体物理学卓越研究中心）；INAF – Osservatorio Astronomico di Padova（意大利国家天体物理研究所帕多瓦天文台）；University of California, Los Angeles（加州大学洛杉矶分校）；Swinburne University of Technology（斯威本科技大学）；University of Ljubljana（卢布尔雅那大学）；University of California, Davis（加州大学戴维斯分校）；University of Chinese Academy of Sciences (UCAS)（中国科学院大学）；National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台）；Beijing Normal University（北京师范大学）；University of Oxford（牛津大学）；INAF – Osservatorio Astronomico di Roma（意大利国家天体物理研究所罗马天文台）；Institute of Science and Technology Austria (ISTA)（奥地利科学技术研究所）
Source--Line Associations in JWST/NIRSpec Dense-Shutter Spectroscopy
Kavli Institute for Cosmology, University of Cambridge（剑桥大学卡弗里宇宙学研究所）；Cavendish Laboratory, University of Cambridge（剑桥大学卡文迪许实验室）；Department for Astrophysical and Planetary Science, University of Colorado, Boulder（科罗拉多大学博尔德分校天文与行星科学系）；Department of Physics, University of Oxford（牛津大学物理系）；Steward Observatory, University of Arizona（亚利桑那大学斯图尔德天文台）；Department of Astronomy, The University of Texas at Austin（德克萨斯大学奥斯汀分校天文学系）；Cosmic Frontier Center, The University of Texas at Austin（德克萨斯大学奥斯汀分校前沿宇宙中心）；Department of Astronomy and Astrophysics, University of California, Santa Cruz（加州大学圣克鲁兹分校天文与天体物理学系）
Testing the performance of cross-correlation techniques to search for molecular features in JWST NIRSpec G395H observations of transiting exoplanets
Instituto de Astrofísica de Canarias（加那利天体物理学研究所）；Universidad de La Laguna（拉古纳大学）；Space Telescope Science Institute（太空望远镜科学研究所）；Center for Astrophysics | Harvard & Smithsonian（哈佛-史密森尼天体物理中心）；Imperial College London（伦敦帝国理工学院）；Universidad Andres Bello（安德烈斯贝略大学）；University of Kansas（堪萨斯大学）；Kapteyn Astronomical Institute, Rijksuniversiteit Groningen（格罗宁根大学卡普坦天文研究所）；Institute of Astronomy, KU Leuven（鲁汶大学天文学研究所）；Anton Pannekoek Institute for Astronomy, University of Amsterdam（阿姆斯特丹大学安东·潘农克天文研究所）；Johns Hopkins University（约翰斯·霍普金斯大学）；Paris-Saclay, Université Paris Cité, CEA, CNRS, AIM（巴黎萨克雷大学、巴黎西岱大学、法国原子能和替代能源委员会、法国国家科学研究中心、天体分子信息实验室）；University of Central Florida（中佛罗里达大学）；Ludwig-Maximilians-Universität München（慕尼黑路德维希-马克西米利安大学）；Instituto de Astrofísica de Andalucía (IAA-CSIC)（安达卢西亚天体物理学研究所（西班牙国家研究委员会））；INAF - Osservatorio Astronomico di Palermo（意大利国家天体物理研究所巴勒莫天文台）；İstanbul Health and Technology University（伊斯坦布尔卫生与技术大学）；Massachusetts Institute of Technology（麻省理工学院）；Wesleyan University（卫斯理安大学）
JWST COMPASS: Insights into the Systematic Noise Properties of NIRSpec/G395H From a Uniform Reanalysis of Seven Transmission Spectra
University of California, Santa Cruz（加州大学圣克鲁兹分校）；NASA Ames Research Center（美国国家航空航天局艾姆斯研究中心）；Imperial College London（伦敦帝国理工学院）；Space Telescope Science Institute（太空望远镜科学研究所）；Center for Astrophysics, Harvard & Smithsonian（哈佛与史密森尼天体物理中心）；Earth and Planets Laboratory, Carnegie Institution for Science（卡内基科学机构地球与行星实验室）；The Observatories of the Carnegie Institution for Science（卡内基科学机构天文台）
A Next-Generation Exoplanet Atmospheric Retrieval Framework for Transmission Spectroscopy (NEXOTRANS): Comparative Characterization for WASP-39 b Using JWST NIRISS, NIRSpec PRISM, and MIRI Observations
JADES Dark Horse: demonstrating high-multiplex observations with JWST/NIRSpec dense-shutter spectroscopy in the JADES Origins Field
Kavli Institute for Cosmology, University of Cambridge（剑桥大学卡弗里宇宙学研究所）；Cavendish Laboratory - Astrophysics Group, University of Cambridge（剑桥大学卡文迪许实验室天体物理组）；Department for Astrophysical and Planetary Science, University of Colorado, Boulder（科罗拉多大学博尔德分校天体物理学与行星科学系）；Center for Astrophysics | Harvard & Smithsonian（哈佛史密森尼天体物理中心）；Department of Physics and Astronomy, University College London（伦敦大学学院物理与天文系）；Scuola Normale Superiore（比萨高等师范学院）；European Southern Observatory（欧洲南方天文台）；Steward Observatory, University of Arizona（亚利桑那大学斯图沃德天文台）；Department of Physics, University of Oxford（牛津大学物理系）；Department of Astronomy & Astrophysics, The Pennsylvania State University（宾夕法尼亚州立大学天文与天体物理系）
The Dyn-Atmo Survey: JWST/NIRSpec spectroscopy of dynamical benchmark GJ 758 B
Space Telescope Science Institute（太空望远镜科学研究所）；European Space Agency (ESA)（欧洲空间局）；Amherst College（阿默斯特学院）；American Museum of Natural History（美国自然历史博物馆）；University of Texas at Austin（德克萨斯大学奥斯汀分校）；Smith College（史密斯学院）；Northwestern University（西北大学）
TDCOSMO XXX: Spatially resolved kinematics of the deflectors in time-delay lens systems B1608+656 and SDSSJ1206+4332 from JWST-NIRSpec observation
University of California, Los Angeles（加州大学洛杉矶分校）；University of Chicago（芝加哥大学）；Independent University, Bangladesh（孟加拉独立大学）；University of Oxford（牛津大学）；Technical University of Munich（慕尼黑工业大学）；Max Planck Institute for Astrophysics（马克斯·普朗克天体物理学研究所）
