Showing 1 - 12 results of 12 for search '"James Webb Space Telescope"', query time: 0.06s Refine Results
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    Physical Pathways for JWST-observed Supermassive Black Holes in the Early Universe by Junehyoung Jeon, Volker Bromm, Boyuan Liu, Steven L. Finkelstein

    Published 2025-01-01
    “…Observations with the James Webb Space Telescope (JWST) have revealed active galactic nuclei (AGN) powered by supermassive black holes (SMBHs) with estimated masses of 10 ^7 –10 ^8 M _⊙ at redshifts z  ∼ 7–9. …”
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    Investigating the Electron-capture Supernova Candidate AT 2019abn with JWST Spectroscopy by Sam Rose, Ryan M. Lau, Jacob E. Jencson, Mansi M. Kasliwal, Kishalay De, Michael E. Ressler, Ori D. Fox, Matthew J. Hankins

    Published 2025-01-01
    “…The James Webb Space Telescope (JWST) has opened up a new window to study highly reddened explosive transients. …”
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    Little Red Dots: Rapidly Growing Black Holes Reddened by Extended Dusty Flows by Zhengrong Li, Kohei Inayoshi, Kejian Chen, Kohei Ichikawa, Luis C. Ho

    Published 2025-01-01
    “…The James Webb Space Telescope (JWST) observations have revolutionized extragalactic research, particularly with the discovery of little red dots (LRDs), which have been discovered as a population of dust-reddened broad-line active galactic nuclei (AGNs). …”
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    An HST Transmission Spectrum of the Closest M Dwarf Transiting Rocky Planet LTT 1445Ab by Katherine A. Bennett, David K. Sing, Kevin B. Stevenson, Hannah R. Wakeford, Zafar Rustamkulov, Natalie H. Allen, Joshua D. Lothringer, Ryan J. MacDonald, Nathan J. Mayne, Guangwei Fu

    Published 2025-01-01
    “…Based on the UV/optical data, we place limits on the extent of stellar variability expected in the near-IR (30–40 ppm), which will be critical for future James Webb Space Telescope observations.…”
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    Figuring Out Gas and Galaxies In Enzo (FOGGIE). VIII. Complex and Stochastic Metallicity Gradients at z > 2 by Ayan Acharyya, Molly S. Peeples, Jason Tumlinson, Brian W. O’Shea, Cassandra Lochhaas, Anna C. Wright, Raymond C. Simons, Ramona Augustin, Britton D. Smith, Eugene Hyeonmin Lee

    Published 2025-01-01
    “…Our results suggest that new methods of quantifying and interpreting gas-phase metallicity will be needed to relate trends in upcoming high- z James Webb Space Telescope observations with the underlying physics of gas accretion, expulsion, and recycling in early galaxies.…”
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    JWST Imaging of Edge-on Protoplanetary Disks. IV. Mid-infrared Dust Scattering in the HH 30 Disk by Ryo Tazaki, François Ménard, Gaspard Duchêne, Marion Villenave, Álvaro Ribas, Karl R. Stapelfeldt, Marshall D. Perrin, Christophe Pinte, Schuyler G. Wolff, Deborah L. Padgett, Jie Ma, Laurine Martinien, Maxime Roumesy

    Published 2025-01-01
    “…We present near- and mid-infrared (IR) broadband imaging observations of the edge-on protoplanetary disk around HH 30 with the James Webb Space Telescope/Near Infrared Camera and the Mid-Infrared Instrument (MIRI). …”
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    Ground-based Reconnaissance Observations of 21 Exoplanet Atmospheres with the Exoplanet Transmission Spectroscopy Imager by Ryan J. Oelkers, Luke M. Schmidt, Erika Cook, Mary Anne Limbach, D. L. DePoy, J. L. Marshall, Jimmy Ardoin, Mitchell Barry, Evan Batteas, Alexandra Boone, Brant Conway, Silvana Delgado Adrande, John D. Dixon, Enrique Gonzalez-Vega, Alexandra Guajardo, Landon Holcomb, Christian Lambert, Shravan Menon, Divya Mishra, Jacob Purcell, Zachary Reed, Nathan Sala, Noah Siebersma, Nhu Ngoc Ton, Raenessa M. L. Walker, Z. Franklin Wang, Kaitlin Webber

    Published 2025-01-01
    “…Ultimately these reconnaissance observations increase the number of planets with transmission spectroscopy measurements by ~10% and provide an immediate prioritization of 21 exoplanets for future follow-up with more precious observatories, such as the James Webb Space Telescope. The reconnaissance spectra are available through the Filtergraph visualization portal at the URL https://filtergraph.com/etsi/ .…”
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