Results 1 to 10 of about 104,589 (135)

On the dust temperatures of high-redshift galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
Dust temperature is an important property of the interstellar medium (ISM) of galaxies. It is required when converting (sub)millimetre broad-band flux to total infrared luminosity (LIR), and hence star formation rate, in high-redshift galaxies. However,
Lichen Liang, Robert Feldmann, Dusan Kereš   +2 more
exaly   +2 more sources

Chemical abundances in high-redshift galaxies: a powerful new emission line diagnostic [PDF]

Astrophysics and Space Science, 2016
This Letter presents a new, remarkably simple diagnostic specifically designed to derive chemical abundances for high redshift galaxies. It uses only the Hα$\mathrm{H}\alpha$, [N ii] and [S ii] emission lines, which can usually be observed in a single ...
Michael A Dopita, Lisa J Kewley, Ralph S Sutherland   +2 more
exaly   +2 more sources

Discovery and properties of ultra-high redshift galaxies (9 < z < 12) in the JWST ERO SMACS 0723 Field [PDF]

Monthly notices of the Royal Astronomical Society, 2022
We present a reduction and analysis of the James Webb Space Telescope (JWST) SMACS 0723 field using new post-launch calibrations to conduct a search for ultra-high-redshift galaxies (z > 9) present within the Epoch of Reionisation.
N. Adams, C. Conselice, L. Ferreira, D. Austin, J. Trussler, I. Juodžbalis, S. Wilkins, J. Caruana, P. Dayal, A. Verma, A. Vijayan   +10 more
semanticscholar   +1 more source

Dusty Starbursts Masquerading as Ultra-high Redshift Galaxies in JWST CEERS Observations [PDF]

Astrophysical Journal Letters, 2022
Lyman-break galaxy (LBG) candidates at z ≳ 10 are rapidly being identified in James Webb Space Telescope (JWST)/NIRCam observations. Due to the (redshifted) break produced by neutral hydrogen absorption of rest-frame UV photons, these sources are ...
J. Zavala, V. Buat, C. Casey, D. Burgarella, S. Finkelstein, M. Bagley, L. Ciesla, E. Daddi, M. Dickinson, H. Ferguson, Maximilien Franco, E. F. Jim'enez-Andrade, J. Kartaltepe, A. Koekemoer, A. L. Bail, E. Murphy, C. Papovich, S. Tacchella, S. Wilkins, I. Aretxaga, P. Behroozi, J. Champagne, A. Fontana, M. Giavalisco, A. Grazian, N. Grogin, L. Kewley, D. Kocevski, A. Kirkpatrick, J. Lotz, L. Pentericci, P. Pérez-González, N. Pirzkal, S. Ravindranath, R. Somerville, J. Trump, Guang Yang, L. Y. Aaron Yung, O. Almaini, R. Amorín, M. Annunziatella, P. Haro, B. Backhaus, G. Barro, E. Bell, R. Bhatawdekar, L. Bisigello, F. Buitrago, A. Calabró, M. Castellano, Ó. Ortiz, Katherine Chworowsky, N. Cleri, S. Cohen, J. Cole, K. Cooke, M. Cooper, A. Cooray, L. Costantin, I. Cox, D. Croton, R. Davé, A. Vega, A. Dekel, D. Elbaz, V. Estrada-Carpenter, V. Fern'andez, K. Finkelstein, J. Freundlich, S. Fujimoto, 'Angela Garc'ia-Argum'anez, J. Gardner, E. Gawiser, C. G'omez-Guijarro, Yuchen Guo, T. Hamilton, N. Hathi, B. Holwerda, M. Hirschmann, M. Huertas-Company, T. Hutchison, Kartheik G. Iyer, A. Jaskot, S. Jha, S. Jogee, S. Juneau, I. Jung, S. Kassin, P. Kurczynski, R. Larson, G. Leung, A. Long, R. Lucas, B. Magnelli, K. Mantha, J. Matharu, E. McGrath, D. H. Mcintosh, Aubrey Medrano, E. Merlin, B. Mobasher, Alexa M. Morales, J. Newman, D. Nicholls, V. Pandya, M. Rafelski, Kaila Ronayne, Caitlin Rose, R. Ryan, P. Santini, L. Seill'e, Ekta A. Shah, Lu Shen, R. Simons, G. Snyder, E. Stanway, A. Straughn, H. Teplitz, B. Vanderhoof, J. Vega-Ferrero, Weichen Wang, B. Weiner, C. Willmer, S. Wuyts   +123 more
semanticscholar   +1 more source

A UNIVERSAL, LOCAL STAR FORMATION LAW IN GALACTIC CLOUDS, NEARBY GALAXIES, HIGH-REDSHIFT DISKS, AND STARBURSTS [PDF]

, 2011
Star formation laws are rules that relate the rate of star formation in a particular region, either an entire galaxy or some portion of it, to the properties of the gas, or other galactic properties, in that region.
M. Krumholz, A. Dekel, C. McKee
semanticscholar   +1 more source

Stress testing ΛCDM with high-redshift galaxy candidates [PDF]

Nature Astronomy, 2022
Early James Webb Space Telescope (JWST) results suggest a high level of star formation in the first 500 million years of the Universe. A study of the available mass from dark matter haloes shows that unexpectedly high-mass JWST galaxy candidates may ...
M. Boylan-Kolchin
semanticscholar   +1 more source

“Direct” Gas-phase Metallicity in Local Analogs of High-redshift Galaxies: Empirical Metallicity Calibrations for High-redshift Star-forming Galaxies [PDF]

Astrophysical Journal, 2018
We study the direct gas-phase oxygen abundance using the well-detected auroral line [O iii]λ4363 in the stacked spectra of a sample of local analogs of high-redshift galaxies.
F. Bian, L. Kewley, M. Dopita
semanticscholar   +1 more source

Dust Attenuation Curves in the Local Universe: Demographics and New Laws for Star-forming Galaxies and High-redshift Analogs [PDF]

, 2018
We study the dust attenuation curves of 230,000 individual galaxies in the local universe, ranging from quiescent to intensely star-forming systems, using GALEX, SDSS, and WISE photometry calibrated on the Herschel ATLAS.
S. Salim, M. Boquien, Janice C. Lee
semanticscholar   +1 more source

Massive and old quiescent galaxies at high redshift [PDF]

Astronomy & Astrophysics, 2019
Aims. Questions of how massive quiescent galaxies rapidly assembled and how abundant they are at high redshift are increasingly important in the study of galaxy formation.
G. Girelli, M. Bolzonella, A. Cimatti
semanticscholar   +1 more source

The HDUV Survey: A Revised Assessment of the Relationship between UV Slope and Dust Attenuation for High-redshift Galaxies [PDF]

, 2017
We use a newly assembled sample of 3545 star-forming galaxies with secure spectroscopic, grism, and photometric redshifts at z = 1.5–2.5 to constrain the relationship between UV slope (β) and dust attenuation (LIR/LUV ≡ IRX).
N. Reddy, P. Oesch, R. Bouwens, M. Montes, G. Illingworth, C. Steidel, P. V. van Dokkum, H. Atek, M. Carollo, A. Cibinel, B. Holden, I. Labbé, D. Magee, L. Morselli, E. Nelson, S. Wilkins   +15 more
semanticscholar   +1 more source