Results 1 to 10 of about 2,784 (183)

Morpheus Reveals Distant Disk Galaxy Morphologies with JWST: The First AI/ML Analysis of JWST Images

Astrophysical Journal Letters, 2023
The dramatic first images with JWST demonstrated its power to provide unprecedented spatial detail for galaxies in the high-redshift universe. Here, we leverage the resolution and depth of the JWST Cosmic Evolution Early Release Science Survey data in ...
Brant E. Robertson, Sandro Tacchella, Benjamin D. Johnson, Ryan Hausen, Adebusola B. Alabi, Kristan Boyett, Andrew J. Bunker, Stefano Carniani, Eiichi Egami, Daniel J. Eisenstein, Kevin N. Hainline, Jakob M. Helton, Zhiyuan Ji, Nimisha Kumari, Jianwei Lyu, Roberto Maiolino, Erica J. Nelson, Marcia J. Rieke, Irene Shivaei, Fengwu Sun, Hannah Übler, Christina C. Williams, Christopher N. A. Willmer, Joris Witstok   +23 more
exaly   +2 more sources

A first look at rocky exoplanets with JWST [PDF]

Proceedings of the National Academy of Sciences of the United States of America
Rocky exoplanet characterization has been a top priority for early James Webb Space Telescope (JWST) science operations. Several milestones have been achieved, including the most precise rocky planet transmission spectra measured to date, and the first detection of thermal emission for rocky worlds below 800 K.
Kevin B Stevenson, Laura Kreidberg, Kreidberg Laura   +2 more
exaly   +5 more sources

Similarity between Compact Extremely Red Objects Discovered with JWST in Cosmic Dawn and Blue-excess Dust-obscured Galaxies Known in Cosmic Noon

The Astrophysical Journal Letters, 2023
Spatially compact objects with extremely red color in the rest-frame optical to near-infrared (0.4–1 μ m) and blue color in the rest-frame ultraviolet (UV; 0.2–0.4 μ m) have been discovered at 5 < z < 9 using the James Webb Space Telescope (JWST).
Akatoki Noboriguchi, Akio K. Inoue, Tohru Nagao, Yoshiki Toba, Toru Misawa   +4 more
doaj   +1 more source

Crowded No More: The Accuracy of the Hubble Constant Tested with High-resolution Observations of Cepheids by JWST

The Astrophysical Journal Letters, 2023
High-resolution James Webb Space Telescope (JWST) observations can test confusion-limited Hubble Space Telescope (HST) observations for a photometric bias that could affect extragalactic Cepheids and the determination of the Hubble constant.
Adam G. Riess, Gagandeep S. Anand, Wenlong Yuan, Stefano Casertano, Andrew Dolphin, Lucas M. Macri, Louise Breuval, Dan Scolnic, Marshall Perrin, Richard I. Anderson   +9 more
doaj   +1 more source

Early Insights for Atmospheric Retrievals of Exoplanets Using JWST Transit Spectroscopy

The Astrophysical Journal Letters, 2023
We have entered the era of the James Webb Space Telescope (JWST). We use the first JWST transmission spectrum of the hot Saturn-mass exoplanet, WASP-39 b, obtained with the NIRSpec instrument in the 3–5 μ m range to investigate (a) what atmospheric ...
Savvas Constantinou, Nikku Madhusudhan, Siddharth Gandhi   +2 more
doaj   +1 more source

UNCOVER: Illuminating the Early Universe—JWST/NIRSpec Confirmation of z > 12 Galaxies

The Astrophysical Journal Letters, 2023
Observations of high-redshift galaxies provide a critical direct test to the theories of early galaxy formation, yet to date, only three have been spectroscopically confirmed at z > 12.
Bingjie Wang, Seiji Fujimoto, Ivo Labbé, Lukas J. Furtak, Tim B. Miller, David J. Setton, Adi Zitrin, Hakim Atek, Rachel Bezanson, Gabriel Brammer, Joel Leja, Pascal A. Oesch, Sedona H. Price, Iryna Chemerynska, Sam E. Cutler, Pratika Dayal, Pieter van Dokkum, Andy D. Goulding, Jenny E. Greene, Y. Fudamoto, Gourav Khullar, Vasily Kokorev, Danilo Marchesini, Richard Pan, John R. Weaver, Katherine E. Whitaker, Christina C. Williams   +26 more
doaj   +1 more source

JADES Initial Data Release for the Hubble Ultra Deep Field: Revealing the Faint Infrared Sky with Deep JWST NIRCam Imaging

The Astrophysical Journal Supplement Series, 2023
JWST has revolutionized the field of extragalactic astronomy with its sensitive and high-resolution infrared view of the distant Universe. Adding to the new legacy of JWST observations, we present the first NIRCam imaging data release from the JWST ...
Marcia J. Rieke, Brant Robertson, Sandro Tacchella, Kevin Hainline, Benjamin D. Johnson, Ryan Hausen, Zhiyuan Ji, Christopher N. A. Willmer, Daniel J. Eisenstein, Dávid Puskás, Stacey Alberts, Santiago Arribas, William M. Baker, Stefi Baum, Rachana Bhatawdekar, Nina Bonaventura, Kristan Boyett, Andrew J. Bunker, Alex J. Cameron, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Zuyi Chen, Mirko Curti, Emma Curtis-Lake, A. Lola Danhaive, Christa DeCoursey, Alan Dressler, Eiichi Egami, Ryan Endsley, Jakob M. Helton, Raphael E. Hviding, Nimisha Kumari, Tobias J. Looser, Jianwei Lyu, Roberto Maiolino, Michael V. Maseda, Erica J. Nelson, George Rieke, Hans-Walter Rix, Lester Sandles, Aayush Saxena, Katherine Sharpe, Irene Shivaei, Maya Skarbinski, Renske Smit, Daniel P. Stark, Meredith Stone, Katherine A. Suess, Fengwu Sun, Michael Topping, Hannah Übler, Natalia C. Villanueva, Imaan E. B. Wallace, Christina C. Williams, Chris Willott, Lily Whitler, Joris Witstok, Charity Woodrum   +58 more
doaj   +1 more source

JEMS: A Deep Medium-band Imaging Survey in the Hubble Ultra Deep Field with JWST NIRCam and NIRISS

The Astrophysical Journal Supplement Series, 2023
We present JWST Extragalactic Medium-band Survey, the first public medium-band imaging survey carried out using JWST/NIRCam and NIRISS. These observations use ∼2 and ∼4 μ m medium-band filters (NIRCam F182M, F210M, F430M, F460M, F480M; and NIRISS F430M ...
Christina C. Williams, Sandro Tacchella, Michael V. Maseda, Brant E. Robertson, Benjamin D. Johnson, Chris J. Willott, Daniel J. Eisenstein, Christopher N. A. Willmer, Zhiyuan Ji, Kevin N. Hainline, Jakob M. Helton, Stacey Alberts, Stefi Baum, Rachana Bhatawdekar, Kristan Boyett, Andrew J. Bunker, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Emma Curtis-Lake, Anna de Graaff, Eiichi Egami, Marijn Franx, Nimisha Kumari, Roberto Maiolino, Erica J. Nelson, Marcia J. Rieke, Lester Sandles, Irene Shivaei, Charlotte Simmonds, Renske Smit, Katherine A. Suess, Fengwu Sun, Hannah Übler, Joris Witstok   +34 more
doaj   +1 more source

Early Results from GLASS-JWST. XI. Stellar Masses and Mass-to-light Ratio of z > 7 Galaxies

The Astrophysical Journal Letters, 2023
We exploit James Webb Space Telescope (JWST) NIRCam observations from the GLASS-JWST-Early Release Science program to investigate galaxy stellar masses at z > 7.
P. Santini, A. Fontana, M. Castellano, N. Leethochawalit, M. Trenti, T. Treu, D. Belfiori, S. Birrer, A. Bonchi, E. Merlin, C. Mason, T. Morishita, M. Nonino, D. Paris, G. Polenta, P. Rosati, L. Yang, K. Boyett, M. Bradac, A. Calabrò, A. Dressler, K. Glazebrook, D. Marchesini, S. Mascia, T. Nanayakkara, L. Pentericci, G. Roberts-Borsani, C. Scarlata, B. Vulcani, Xin Wang   +29 more
doaj   +1 more source

Peering into the Cosmic Dawn: JWST Cycle 1 Data Reveals Early Galaxy Candidates at Redshifts z > 9.5

Edinburgh Student Journal of Science
Observing high-redshift objects provides a window into the past, enabling insight into galaxy formation, matter distribution, and the nature of dark matter and energy.
Sev Zielinska
doaj   +1 more source