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One of many ways for the James-Webb Space Telescope (JWST) to capture astronomical signals is the Mid-Infrared Instrument (MIRI) Imaging mode. To make this data ready for analysis, the JWST standard reduction pipeline has three stages and…

Instrumentation and Methods for Astrophysics · Physics 2024-01-30 Güray Hatipoğlu

The NIRCam instrument on the upcoming James Webb Space Telescope (JWST) will offer an unprecedented view of the most distant galaxies. In preparation for future deep NIRCam extragalactic surveys, it is crucial to understand the color…

We present an algorithm that mitigates the effects of charge migration due to the "brighter-fatter effect'' (BFE) that occurs for highly illuminated stars in the Teledyne HAWAII-2RG detectors used in the NIRCam, NIRISS, and NIRSpec science…

Instrumentation and Methods for Astrophysics · Physics 2024-02-09 Paul Goudfrooij , David Grumm , Kevin Volk , Howard Bushouse

As the James Webb Space Telescope (JWST) has become fully operational, early-release data are now available to begin building the tools and calibrations for precision point-source photometry and astrometry in crowded cluster environments.…

Solar and Stellar Astrophysics · Physics 2022-09-28 D. Nardiello , L. R. Bedin , A. Burgasser , M. Salaris , S. Cassisi , M. Griggio , M. Scalco

Nonnegative matrix factorization (NMF) is a linear dimensionality technique for nonnegative data with applications such as image analysis, text mining, audio source separation and hyperspectral unmixing. Given a data matrix $M$ and a…

Machine Learning · Computer Science 2021-04-14 Junjun Pan , Nicolas Gillis

We present images and a multi-wavelength photometric catalog based on all of the JWST NIRCam observations obtained to date in the region of the Abell 2744 galaxy cluster. These data come from three different programs, namely the GLASS-JWST…

We give an overview and describe the rationale, methods, and first results from NIRCam images of the JWST "Prime Extragalactic Areas for Reionization and Lensing Science" ("PEARLS") project. PEARLS uses up to eight NIRCam filters to survey…

Cosmology and Nongalactic Astrophysics · Physics 2022-12-21 Rogier A. Windhorst , Seth H. Cohen , Rolf A. Jansen , Jake Summers , Scott Tompkins , Christopher J. Conselice , Simon P. Driver , Haojing Yan , Dan Coe , Brenda Frye , Norman Grogin , Anton Koekemoer , Madeline A. Marshall , Rosalia O'Brien , Nor Pirzkal , Aaron Robotham , Russell E. Ryan, , Christopher N. A. Willmer , Timothy Carleton , Jose M. Diego , William C. Keel , Paolo Porto , Caleb Redshaw , Sydney Scheller , Stephen M. Wilkins , S. P. Willner , Adi Zitrin , Nathan J. Adams , Duncan Austin , Richard G. Arendt , John F. Beacom , Rachana A. Bhatawdekar , Larry D. Bradley , Thomas J. Broadhurst , Cheng Cheng , Francesca Civano , Liang Dai , Herve Dole , Jordan C. J. D'Silva , Kenneth J. Duncan , Giovanni G. Fazio , Giovanni Ferrami , Leonardo Ferreira , Steven L. Finkelstein , Lukas J. Furtak , Hansung B. Gim , Alex Griffiths , Heidi B. Hammel , Kevin C. Harrington , Nimish P. Hathi , Benne W. Holwerda , Rachel Honor , Jia-Sheng Huang , Minhee Hyun , Myungshin Im , Bhavin A. Joshi , Patrick S. Kamieneski , Patrick Kelly , Rebecca L. Larson , Juno Li , Jeremy Lim , Zhiyuan Ma , Peter Maksym , Giorgio Manzoni , Ashish Kumar Meena , Stefanie N. Milam , Mario Nonino , Massimo Pascale , Justin D. R. Pierel , Andreea Petric , Maria del Carmen Polletta , Huub J. A. Rottgering , Michael J. Rutkowski , Ian Smail , Amber N. Straughn , Louis-Gregory Strolger , Andi Swirbul , James A. A. Trussler , Lifan Wang , Brian Welch , J. Stuart B. Wyithe , Min Yun , Erik Zackrisson , Jiashuo Zhang , Xiurui Zhao

Dimensionality reduction and matrix factorization techniques are important and useful machine-learning techniques in many fields. Nonnegative matrix factorization (NMF) is particularly useful for spectral analysis and image processing in…

Instrumentation and Methods for Astrophysics · Physics 2016-12-20 Guangtun Zhu

Traditional nonnegative matrix factorization (NMF) learns a new feature representation on the whole data space, which means treating all features equally. However, a subspace is often sufficient for accurate representation in practical…

Computer Vision and Pattern Recognition · Computer Science 2022-04-19 Junhang Li , Jiao Wei , Can Tong , Tingting Shen , Yuchen Liu , Chen Li , Shouliang Qi , Yudong Yao , Yueyang Teng

We present an overview of the James Webb Space Telescope (JWST) Advanced Deep Extragalactic Survey (JADES), an ambitious program of infrared imaging and spectroscopy in the GOODS-S and GOODS-N deep fields, designed to study galaxy evolution…

The James Webb Space Telescope (JWST) offers unprecedented sensitivity, stability, and wavelength coverage for transiting exoplanet studies, opening up new avenues for measuring atmospheric abundances, structure, and temperature profiles.…

Instrumentation and Methods for Astrophysics · Physics 2016-12-07 Everett Schlawin , Marcia Rieke , Jarron Leisenring , Tom Greene , Lisa May Walker , Jonathan Fraine , Doug Kelly , Karl Misselt , Michael Line , John Stansberry , Nikole Lewis

We implement an algorithm for detecting and removing artifacts from astronomical images by means of outlier rejection during stacking. Our method is capable of addressing both small, highly significant artifacts such as cosmic rays and, by…

Instrumentation and Methods for Astrophysics · Physics 2015-06-18 D. Gruen , S. Seitz , G. M. Bernstein

The James Webb Space Telescope (JWST) is ushering in a new era in remote sensing of exoplanetary atmospheres. Atmospheric retrievals of exoplanets can be highly sensitive to high-precision JWST data. It is, therefore, imperative to…

Earth and Planetary Astrophysics · Physics 2023-07-12 Måns Holmberg , Nikku Madhusudhan

We present an efficient Bayesian SED-fitting framework tailored to multiwavelength pixel photometry from the JWST Advanced Deep Extragalactic Survey (JADES). Our method employs simulation-based inference to enable rapid posterior sampling…