Results 21 to 30 of about 1,703 (181)

Cometary Science with the James Webb Space Telescope [PDF]

Publications of the Astronomical Society of the Pacific, 2016
Accepted for publication in Publications of the Astronomical Society of the Pacific.
Kelley, Michael S. P., Woodward, Charles E., Bodewits, Dennis, Farnham, Tony L., Gudipati, Murthy S., Harker, David E., Hines, Dean C., Knight, Matthew M., Kolokolova, Ludmilla, Li, Aigen, de Pater, Imke, Protopapa, Silvia, Russell, Ray W., Sitko, Michael L., Wooden, Diane H.   +14 more
openaire   +2 more sources

Cis–Trans Rotational Isomerism of Formic Acid, Sulfur, and Selenium Analogues and Their Dimers: Chemical Kinetics Under Interstellar Conditions

International Journal of Chemical Kinetics, EarlyView.
ABSTRACT We present chemical kinetic rate constants for the cis to trans isomerisation or rotamerization of monomeric seleno‐, thio‐, and formic acids and that of three of their dimeric species, based on variational transition state theory and multidimensional tunneling calculations in the gas‐phase, from 10 K to 300 K. These provide, firstly, reliable
Judith Wurmel, John M. Simmie
wiley   +1 more source

The James Webb Space Telescope Data Calibration Pipeline [PDF]

Proceedings of the Python in Science Conference, 2015
The James Webb Space Telescope (JWST) is the successor to the Hubble Space Telescope (HST) and is currently expected to be launched in late 2018. The Space Telescope Science Institute (STScI) is developing the software systems that will be used to provide routine calibration of the science data received from JWST.
Howard Bushouse, Michael Droettboom, Perry Greenfield   +2 more
openaire   +2 more sources

Unveiling the Cosmic Chemistry: Revisiting the Mass–Metallicity Relation with JWST/NIRSpec at 4 < z < 10

The Astrophysical Journal
We present star formation rates (SFRs), the mass–metallicity relation (MZR), and the SFR-dependent MZR across redshifts 4–10 using 81 star-forming galaxies observed by the JWST NIRSpec employing both low-resolution PRISM and medium-resolution gratings ...
Arnab Sarkar, Priyanka Chakraborty, Mark Vogelsberger, Michael McDonald, Paul Torrey, Alex M. Garcia, Gourav Khullar, Gary J. Ferland, William Forman, Scott Wolk, Benjamin Schneider, Mark Bautz, Eric Miller, Catherine Grant, John ZuHone   +14 more
doaj   +1 more source

Design and Preliminary Ground Experiment for Deployable Sunshade Structures of a Modular Space Telescope

Sensors
On-orbit assembling space telescope (OAST) is one of the most feasible methods to implement a large-scale space telescope. Unlike a monolithic space telescope (such as Hubble Space Telescope, HST) or a deployable space telescope (such as James Webb Space
Ye Kuang, Shuaihui Wang, Yan Gao, Boqian Xu, Shuyan Xu   +4 more
doaj   +1 more source

JWST Low-resolution MIRI Spectral Observations of SN 2021aefx: High-density Burning in a Type Ia Supernova

The Astrophysical Journal Letters, 2023
We present a JWST/MIRI low-resolution mid-infrared (MIR) spectroscopic observation of the normal Type Ia supernova (SN Ia) SN 2021aefx at +323 days past rest-frame B -band maximum light.
J. M. DerKacy, C. Ashall, P. Hoeflich, E. Baron, B. J. Shappee, D. Baade, J. Andrews, K. A. Bostroem, P. J. Brown, C. R. Burns, A. Burrow, A. Cikota, T. de Jaeger, A. Do, Y. Dong, I. Dominguez, L. Galbany, E. Y. Hsiao, E. Karamehmetoglu, K. Krisciunas, S. Kumar, J. Lu, T. B. Mera Evans, J. R. Maund, P. Mazzali, K. Medler, N. Morrell, F. Patat, M. M. Phillips, M. Shahbandeh, S. Stangl, C. P. Stevens, M. D. Stritzinger, N. B. Suntzeff, C. M. Telesco, M. A. Tucker, S. Valenti, L. Wang, Y. Yang, S. W. Jha, L. A. Kwok   +40 more
doaj   +1 more source

Lightning electromagnetic emission location using arrival time differencing (LEELA): An introduction to the Met Office's next generation Very Low Frequency lightning location system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This paper describes the Met Office's new lightning location system LEELA. A brief overview of the upgraded hardware and geolocation algorithms is given. LEELA has improved lightning detection capabilities, especially at night. When comparing LEELA to the previous ATDnet system against ground truths LEELA has 100% storm detection efficiency within 5 km
Graeme Marlton, Mike Protts, Stephen Prust, Edmund Keith Stone, Debbie O'Sullivan, Sue Twelves, Francesco Devoto, Claire Witham   +7 more
wiley   +1 more source

Simulating High-redshift Galaxies: Enhancing UV Luminosity with Star Formation Efficiency and a Top-heavy IMF

The Astrophysical Journal
Recent findings from photometric and spectroscopic JWST surveys have identified examples of high-redshift galaxies at z  ≳ 10. These high- z galaxies appear to form much earlier and exhibit greater UV luminosity than predicted by theoretical work.
Tae Bong Jeong, Myoungwon Jeon, Hyunmi Song, Volker Bromm   +3 more
doaj   +1 more source

Photometric Redshifts With Machine Learning, Lights and Shadows on a Complex Data Science Use Case

Frontiers in Astronomy and Space Sciences, 2021
The importance of the current role of data-driven science is constantly increasing within Astrophysics, due to the huge amount of multi-wavelength data collected every day, characterized by complex and high-volume information requiring efficient and, as ...
Massimo Brescia, Stefano Cavuoti, Stefano Cavuoti, Oleksandra Razim, Valeria Amaro, Giuseppe Riccio, Giuseppe Longo   +6 more
doaj   +1 more source

Multi‐story building: A montage of STEM success through autobioracy

Review of Education, Volume 14, Issue 3, December 2026.
Abstract This paper presents a montage of STEM success stories, employing phenomenographic narrative research to gather and present people's lived experiences: their ‘STEM (life) stories’. We chart the experiences of members of the general public as they meet issues of STEM in their everyday lives and coin the term autobioracy, moving away from ...
Saima Salehjee, Mike Watts
wiley   +1 more source