Zobrazeno 1 - 10
of 198
pro vyhledávání: '"Benjamin D. Johnson"'
Publikováno v:
The Astrophysical Journal Letters, Vol 969, Iss 1, p L5 (2024)
JWST is producing high-quality rest-frame optical and UV spectra of faint galaxies at z > 4 for the first time, challenging models of galaxy and stellar populations. One galaxy recently observed at z = 5.943, GS9422, has nebular line and UV continuum
Externí odkaz:
https://doaj.org/article/5e909b86302448aebec07a3be07c3a1d
Autor:
Joshua S. Speagle, Catherine Zucker, Ana Bonaca, Phillip A. Cargile, Benjamin D. Johnson, Angus Beane, Charlie Conroy, Douglas P. Finkbeiner, Gregory M. Green, Harshil M. Kamdar, Rohan Naidu, Hans-Walter Rix, Edward F. Schlafly, Aaron Dotter, Gwendolyn Eadie, Daniel J. Eisenstein, Alyssa A. Goodman, Jiwon Jesse Han, Andrew K. Saydjari, Yuan-Sen Ting, Ioana A. Zelko
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 2, p 121 (2024)
We present Augustus , a catalog of distance, extinction, and stellar parameter estimates for 170 million stars from 14 mag < r < 20 mag and with ∣ b ∣ > 10° drawing on a combination of optical to near-infrared photometry from Pan-STARRS, 2MASS,
Externí odkaz:
https://doaj.org/article/1215b7071ea9447192d654256b2b3925
Autor:
Brant Robertson, Benjamin D. Johnson, Sandro Tacchella, Daniel J. Eisenstein, Kevin Hainline, Santiago Arribas, William M. Baker, Andrew J. Bunker, Stefano Carniani, Phillip A. Cargile, Courtney Carreira, Stephane Charlot, Jacopo Chevallard, Mirko Curti, Emma Curtis-Lake, Francesco D’Eugenio, Eiichi Egami, Ryan Hausen, Jakob M. Helton, Peter Jakobsen, Zhiyuan Ji, Gareth C. Jones, Roberto Maiolino, Michael V. Maseda, Erica Nelson, Pablo G. Pérez-González, Dávid Puskás, Marcia Rieke, Renske Smit, Fengwu Sun, Hannah Übler, Lily Whitler, Christina C. Williams, Christopher N. A. Willmer, Chris Willott, Joris Witstok
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 1, p 31 (2024)
We characterize the earliest galaxy population in the JADES Origins Field, the deepest imaging field observed with JWST. We make use of ancillary Hubble Space Telescope optical images (five filters spanning 0.4–0.9 μ m) and novel JWST images with
Externí odkaz:
https://doaj.org/article/b50b5903eb284ed180820181fa7cc563
Autor:
Charlie Conroy, Benjamin D. Johnson, Pieter van Dokkum, Alis Deason, Sandro Tacchella, Sirio Belli, William P. Bowman, Rohan P. Naidu, Minjung Park, Roberto Abraham, Razieh Emami
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 129 (2024)
We report the serendipitous discovery of an extended stellar halo surrounding the low-mass galaxy Ark 227 ( M _* = 5 × 10 ^9 M _⊙ ; d = 35 Mpc) in deep JWST NIRCam imaging from the Blue Jay Survey. The F200W–F444W color provides robust star–ga
Externí odkaz:
https://doaj.org/article/ceee34cedda0412b80f8327e1c7f2e07
Autor:
Christina C. Williams, Stacey Alberts, Zhiyuan Ji, Kevin N. Hainline, Jianwei Lyu, George Rieke, Ryan Endsley, Katherine A. Suess, Fengwu Sun, Benjamin D. Johnson, Michael Florian, Irene Shivaei, Wiphu Rujopakarn, William M. Baker, Rachana Bhatawdekar, Kristan Boyett, Andrew J. Bunker, Alex J. Cameron, Stefano Carniani, Stephane Charlot, Emma Curtis-Lake, Christa DeCoursey, Anna de Graaff, Eiichi Egami, Daniel J. Eisenstein, Justus L. Gibson, Ryan Hausen, Jakob M. Helton, Roberto Maiolino, Michael V. Maseda, Erica J. Nelson, Pablo G. Pérez-González, Marcia J. Rieke, Brant E. Robertson, Aayush Saxena, Sandro Tacchella, Christopher N. A. Willmer, Chris J. Willott
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 1, p 34 (2024)
Using deep JWST imaging from JADES, JEMS, and SMILES, we characterize optically faint and extremely red galaxies at z > 3 that were previously missing from galaxy census estimates. The data indicate the existence of abundant, dusty, and poststarburst
Externí odkaz:
https://doaj.org/article/aa1f0104b3b64a6d9cb557c499750d7e
Autor:
Pablo G. Pérez-González, Guillermo Barro, George H. Rieke, Jianwei Lyu, Marcia Rieke, Stacey Alberts, Christina C. Williams, Kevin Hainline, Fengwu Sun, Dávid Puskás, Marianna Annunziatella, William M. Baker, Andrew J. Bunker, Eiichi Egami, Zhiyuan Ji, Benjamin D. Johnson, Brant Robertson, Bruno Rodríguez Del Pino, Wiphu Rujopakarn, Irene Shivaei, Sandro Tacchella, Christopher N. A. Willmer, Chris Willott
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 1, p 4 (2024)
We study 31 little red dots (LRD) detected by JADES/NIRCam and covered by the SMILES/MIRI survey, of which ∼70% are detected in the two bluest MIRI bands and 40% in redder MIRI filters. The median/quartiles redshifts are $z={6.9}_{5.9}^{7.7}$ (55%
Externí odkaz:
https://doaj.org/article/54ee7a6a14e44e1fa63d0e622b2a8209
Autor:
Jianwei Lyu, Stacey Alberts, George H. Rieke, Irene Shivaei, Pablo G. Pérez-González, Fengwu Sun, Kevin N. Hainline, Stefi Baum, Nina Bonaventura, Andrew J. Bunker, Eiichi Egami, Daniel J. Eisenstein, Michael Florian, Zhiyuan Ji, Benjamin D. Johnson, Jane Morrison, Marcia Rieke, Brant Robertson, Wiphu Rujopakarn, Sandro Tacchella, Jan Scholtz, Christopher N. A. Willmer
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 2, p 229 (2024)
Understanding the coevolution of supermassive black holes and their host systems requires a comprehensive census of active galactic nuclei (AGNs) behavior across a wide range of redshift, luminosity, obscuration level, and galaxy properties. We repor
Externí odkaz:
https://doaj.org/article/762f0b8b007d46f4920100be51798b8a
Autor:
Daniel R. Weisz, Andrew E. Dolphin, Alessandro Savino, Kristen B. W. McQuinn, Max J. B. Newman, Benjamin F. Williams, Nitya Kallivayalil, Jay Anderson, Martha L. Boyer, Matteo Correnti, Marla C. Geha, Karin M. Sandstrom, Andrew A. Cole, Jack T. Warfield, Evan D. Skillman, Roger E. Cohen, Rachael Beaton, Alessandro Bressan, Alberto Bolatto, Michael Boylan-Kolchin, Alyson M. Brooks, James S. Bullock, Charlie Conroy, Michael C. Cooper, Julianne J. Dalcanton, Aaron L. Dotter, Tobias K. Fritz, Christopher T. Garling, Mario Gennaro, Karoline M. Gilbert, Leo Girardi, Benjamin D. Johnson, L. Clifton Johnson, Jason Kalirai, Evan N. Kirby, Dustin Lang, Paola Marigo, Hannah Richstein, Edward F. Schlafly, Erik J. Tollerud, Andrew Wetzel
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 271, Iss 2, p 47 (2024)
We present NIRCam and NIRISS modules for DOLPHOT, a widely used crowded-field stellar photometry package. We describe details of the modules including pixel masking, astrometric alignment, star finding, photometry, catalog creation, and artificial st
Externí odkaz:
https://doaj.org/article/c2942cef14c8474da98e78e9ba5f8bf7
Autor:
Kevin N. Hainline, Benjamin D. Johnson, Brant Robertson, Sandro Tacchella, Jakob M. Helton, Fengwu Sun, Daniel J. Eisenstein, Charlotte Simmonds, Michael W. Topping, Lily Whitler, Christopher N. A. Willmer, Marcia Rieke, Katherine A. Suess, Raphael E. Hviding, Alex J. Cameron, Stacey Alberts, William M. Baker, Stefi Baum, Rachana Bhatawdekar, Nina Bonaventura, Kristan Boyett, Andrew J. Bunker, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Zuyi Chen, Mirko Curti, Emma Curtis-Lake, Francesco D’Eugenio, Eiichi Egami, Ryan Endsley, Ryan Hausen, Zhiyuan Ji, Tobias J. Looser, Jianwei Lyu, Roberto Maiolino, Erica Nelson, Dávid Puskás, Tim Rawle, Lester Sandles, Aayush Saxena, Renske Smit, Daniel P. Stark, Christina C. Williams, Chris Willott, Joris Witstok
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 71 (2024)
We present a catalog of 717 candidate galaxies at z > 8 selected from 125 square arcmin of NIRCam imaging as part of the JWST Advanced Deep Extragalactic Survey (JADES). We combine the full JADES imaging data set with data from the JWST Extragalactic
Externí odkaz:
https://doaj.org/article/41389560a2204ca3a3a5ccc4fdc3f137
Autor:
Kevin N. Hainline, Jakob M. Helton, Benjamin D. Johnson, Fengwu Sun, Michael W. Topping, Jarron M. Leisenring, William M. Baker, Daniel J. Eisenstein, Ryan Hausen, Raphael E. Hviding, Jianwei Lyu, Brant Robertson, Sandro Tacchella, Christina C. Williams, Christopher N. A. Willmer, Thomas L. Roellig
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 66 (2024)
By combining the James Webb Space Telescope (JWST)/NIRCam JADES and CEERS extragalactic data sets, we have uncovered a sample of 21 T and Y brown dwarf candidates at best-fit distances between 0.1 and 4.2 kpc. These sources were selected by targeting
Externí odkaz:
https://doaj.org/article/e9921175c6a7489d9a2e9909fdb21881