Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Rohan P. Naidu"'
Autor:
Bingjie Wang, Joel Leja, Anna de Graaff, Gabriel B. Brammer, Andrea Weibel, Pieter van Dokkum, Josephine F. W. Baggen, Katherine A. Suess, Jenny E. Greene, Rachel Bezanson, Nikko J. Cleri, Michaela Hirschmann, Ivo Labbé, Jorryt Matthee, Ian McConachie, Rohan P. Naidu, Erica Nelson, Pascal A. Oesch, David J. Setton, Christina C. Williams
Publikováno v:
The Astrophysical Journal Letters, Vol 969, Iss 1, p L13 (2024)
The identification of red, apparently massive galaxies at z > 7 in early James Webb Space Telescope (JWST) photometry suggests a strongly accelerated time line compared to standard models of galaxy growth. A major uncertainty in the interpretation is
Externí odkaz:
https://doaj.org/article/cc0fd3a12d50478f96afeb3af3f606cd
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:
Chloe Neufeld, Pieter van Dokkum, Yasmeen Asali, Alba Covelo-Paz, Joel Leja, Jamie Lin, Jorryt Matthee, Pascal A. Oesch, Naveen A. Reddy, Irene Shivaei, Katherine E. Whitaker, Stijn Wuyts, Gabriel Brammer, Danilo Marchesini, Michael V. Maseda, Rohan P. Naidu, Erica J. Nelson, Anna Velichko, Andrea Weibel, Mengyuan Xiao
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 2, p 156 (2024)
We present results from the JWST First Reionization Epoch Spectroscopically Complete Observations survey on the star-forming sequence (SFS) of galaxies at 1.0 < z < 1.7, around the peak of the cosmic star formation history. Star formation rates (SFRs
Externí odkaz:
https://doaj.org/article/b9e3645ce25f48aaa3e85e458c83661e
Autor:
Vedant Chandra, Vadim A. Semenov, Hans-Walter Rix, Charlie Conroy, Ana Bonaca, Rohan P. Naidu, René Andrae, Jiadong Li, Lars Hernquist
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 112 (2024)
We illustrate the formation and evolution of the Milky Way over cosmic time, utilizing a sample of 10 million red giant stars with full chemodynamical information, including metallicities and α -abundances from low-resolution Gaia XP spectra. The ev
Externí odkaz:
https://doaj.org/article/83122b0b51084aa685f143e220a14e94
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:
Minghao Yue, Anna-Christina Eilers, Robert A. Simcoe, Ruari Mackenzie, Jorryt Matthee, Daichi Kashino, Rongmon Bordoloi, Simon J. Lilly, Rohan P. Naidu
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 2, p 176 (2024)
We report JWST/NIRCam measurements of quasar host galaxy emissions and supermassive black hole (SMBH) masses for six quasars at 5.9 < z < 7.1 in the Emission-line galaxies and Intergalactic Gas in the Epoch of Reionization (EIGER) project. We obtain
Externí odkaz:
https://doaj.org/article/e5dd437c57244e619b037bf9bb40becd
Autor:
Jenny E. Greene, Ivo Labbe, Andy D. Goulding, Lukas J. Furtak, Iryna Chemerynska, Vasily Kokorev, Pratika Dayal, Marta Volonteri, Christina C. Williams, Bingjie Wang, David J. Setton, Adam J. Burgasser, Rachel Bezanson, Hakim Atek, Gabriel Brammer, Sam E. Cutler, Robert Feldmann, Seiji Fujimoto, Karl Glazebrook, Anna de Graaff, Gourav Khullar, Joel Leja, Danilo Marchesini, Michael V. Maseda, Jorryt Matthee, Tim B. Miller, Rohan P. Naidu, Themiya Nanayakkara, Pascal A. Oesch, Richard Pan, Casey Papovich, Sedona H. Price, Pieter van Dokkum, John R. Weaver, Katherine E. Whitaker, Adi Zitrin
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 39 (2024)
The James Webb Space Telescope is revealing a new population of dust-reddened broad-line active galactic nuclei (AGN) at redshifts z ≳ 5. Here we present deep NIRSpec/Prism spectroscopy from the Cycle 1 Treasury program Ultradeep NIRSpec and NIRCam
Externí odkaz:
https://doaj.org/article/92cf0a19c2d843a68017b1da384b1e95
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 2, p 162 (2024)
The Milky Way’s stellar halo, which extends to >100 kpc, encodes the evolutionary history of our Galaxy. However, most studies of the halo to date have been limited to within a few kiloparsecs of the Sun. Here, we characterize differences between t
Externí odkaz:
https://doaj.org/article/aeb00b3a42274e82951cf53fbb347b0e
Autor:
Jorryt Matthee, Rohan P. Naidu, Gabriel Brammer, John Chisholm, Anna-Christina Eilers, Andy Goulding, Jenny Greene, Daichi Kashino, Ivo Labbe, Simon J. Lilly, Ruari Mackenzie, Pascal A. Oesch, Andrea Weibel, Stijn Wuyts, Mengyuan Xiao, Rongmon Bordoloi, Rychard Bouwens, Pieter van Dokkum, Garth Illingworth, Ivan Kramarenko, Michael V. Maseda, Charlotte Mason, Romain A. Meyer, Erica J. Nelson, Naveen A. Reddy, Irene Shivaei, Robert A. Simcoe, Minghao Yue
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 2, p 129 (2024)
Characterizing the prevalence and properties of faint active galactic nuclei (AGNs) in the early Universe is key for understanding the formation of supermassive black holes (SMBHs) and determining their role in cosmic reionization. We perform a spect
Externí odkaz:
https://doaj.org/article/281e2719ca694d0ba3610005b2e977cf
Autor:
Rongmon Bordoloi, Robert A. Simcoe, Jorryt Matthee, Daichi Kashino, Ruari Mackenzie, Simon J. Lilly, Anna-Christina Eilers, Bin Liu, David DePalma, Minghao Yue, Rohan P. Naidu
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 1, p 28 (2024)
We report new observations of the cool diffuse gas around 29, 2.3 < z < 6.3 galaxies using deep JWST/NIRCam slitless grism spectroscopy around the sight line to the quasar J0100+2802. The galaxies span a stellar mass range of $7.1\leqslant {\rm{log}}
Externí odkaz:
https://doaj.org/article/88aeeb1adb4b4db880213141f7c4e156