Results 1 to 10 of about 6,945 (227)

Spectroscopic Confirmation of an Ultra-Massive Galaxy in a Protocluster at $z \sim 4.9$

The Open Journal of Astrophysics
We present spectroscopic confirmation of an ultra-massive galaxy (UMG) with $\log(M_\star/M_\odot) = 10.98 \pm 0.07$ at $z_\mathrm{spec} = 4.8947$ in the Extended Groth Strip (EGS), based on deep observations of Ly$\alpha$ emission with Keck/DEIMOS.
Stephanie M. Urbano Stawinski, M. C. Cooper, Ben Forrest, Adam Muzzin, Danilo Marchesini, Gillian Wilson, Percy Gomez, Ian McConachie, Z. Cemile Marsan, Marianna Annuziatella, Wenjun Chang   +10 more
doaj   +1 more source

The S4G-WISE View of Global Star Formation in the Nearby Universe

The Astrophysical Journal
In this work, we present source-tailored Wide-field Infrared Survey Explorer (WISE) mid-infrared photometry (at 3.4, 4.6, 12, and 23 μ m) of 2812 galaxies in the extended Spitzer Survey of Stellar Structure in Galaxies sample, and characterize the mid ...
M. E. Cluver, T. H. Jarrett, D. A. Dale, J.-D. T. Smith, M. J. I. Brown, W. van Kempen, E. Lengerer, R. Incoll, C. Davey, R. Holloway, J. Cameron, K. Sheth   +11 more
doaj   +1 more source

J-PAS: A neural network approach to single stellar population characterisation

Astronomy & Astrophysics
J-PAS (Javalambre Physics of the Accelerating Universe Astrophysical Survey) will present a groundbreaking photometric survey covering 8500 deg2 of the visible sky from Javalambre, capturing data in 56 narrow-band filters.
Domínguez Sánchez H., Coelho P., Bruzual G., Hernán-Caballero A., López Sanjuan C., Fernandez-Ontiveros J. A., Díaz-García L. A., Suelves L., Álvarez-Candal A., Breda I., Gurung-López S., Placco V., Vega-Ferrero J., Vílchez J. M., Abramo R., Alcaniz J., Benitez N., Bonoli S., Carneiro S., Cenarro J., Cristóbal-Hornillos D., Dupke R., Ederoclite A., Hernández–Monteagudo C., Marín-Franch A., Mendes de Oliveira C., Moles M., Sodré L., Taylor K., Varela J., Vázquez Ramió H.   +30 more
doaj   +1 more source

Working Group on Galaxy Photometry [PDF]

Transactions of the International Astronomical Union, 1970
1. A tabular presentation has been adopted and the report does not cover work in the U.S.S.R. During the report period Circular No. 6 (Report on Prague Meeting) and a Technical Supplement, No. 6a, were distributed. Work on standard luminosity profiles for a few well-observed galaxies (NGC3115, 3379, 4486) progressed more slowly than expected, but ...
openaire   +1 more source

Automated Computer Vision Cluster Identification in the Fireworks Galaxy

The Astrophysical Journal
We present the integrated photometry, radii, and spatial distribution of young (≤25 Myr) star cluster candidates in NGC 6946. NGC 6946, also known as the Fireworks Galaxy, is a highly star-forming galaxy with numerous young massive clusters.
Debby Tran, Benjamin Williams, Emily Levesque, Emerson Bowles, Bo-Eun Choi, L. Clifton Johnson, Anil Seth, Tobin M. Wainer   +7 more
doaj   +1 more source

BayeSED-GALAXIES. II. Bayesian Full Spectrum Analysis of Galaxies and Application in the CSST Wide-field Slitless Spectroscopy Survey

The Astrophysical Journal Supplement Series
The China Space Station Telescope (CSST) will simultaneously conduct wide-field multiband photometric imaging and spectroscopic slitless surveys, poised to significantly advance cosmology and galaxy evolution research.
Yunkun Han, Xian Zhong Zheng, Xiaohu Yang, Run Wen, F. S. Liu, Hu Zou, Jin-Ming Bai, Yinghe Zhao, Lulu Fan, Fenghui Zhang, Xiaoyu Kang, Xiejin Li, Hong Guo, Pengjie Zhang, Hu Zhan, Gong-Bo Zhao, Cheng Li, Yan Gong, Yizhou Gu, Feng Shi, Xingchen Zhou, Jipeng Sui, Yipeng Jing, Zhanwen Han   +23 more
doaj   +1 more source

A Holistic Exploration of the Potentially Recoverable Redshift Information of Stage IV Galaxy Surveys

The Astrophysical Journal
Extragalactic science and cosmology with Stage IV galaxy surveys will rely almost exclusively on redshift measurements derived solely from photometry, which are subject to systematic and statistical uncertainties with numerous analysis choices.
Bryan R. Scott, Alex I. Malz, Robert Sorba   +2 more
doaj   +1 more source

The Universe SPHEREx Will See: Empirically Based Galaxy Simulations and Redshift Predictions

The Astrophysical Journal
We simulate galaxy properties and redshift estimation for SPHEREx, the next NASA Medium Class Explorer. To make robust models of the galaxy population and test the spectrophotometric redshift performance for SPHEREx, we develop a set of synthetic ...
Richard M. Feder, Daniel C. Masters, Bomee Lee, James J. Bock, Yi-Kuan Chiang, Ami Choi, Olivier Doré, Shoubaneh Hemmati, Olivier Ilbert   +8 more
doaj   +1 more source

RUBIES Spectroscopically Confirms the High Number Density of Quiescent Galaxies from 2 < z< 5

The Astrophysical Journal
We present the number density of massive ( ${\mathrm{log}}({M}_{* }/{M}_{\odot })\gt 10.3$ ) quiescent galaxies at 2 
Yunchong Zhang, Anna de Graaff, David J. Setton, Sedona H. Price, Rachel Bezanson, Claudia del P. Lagos, Sam E. Cutler, Ian McConachie, Nikko J. Cleri, Olivia R. Cooper, Rashmi Gottumukkala, Jenny E. Greene, Michaela Hirschmann, Gourav Khullar, Ivo Labbe, Joel Leja, Michael V. Maseda, Jorryt Matthee, Tim B. Miller, Themiya Nanayakkara, Katherine A. Suess, Bingjie Wang, Katherine E. Whitaker, Christina C. Williams   +23 more
doaj   +1 more source

Star–galaxy classification in deep LSST data with random forest

Astronomy & Astrophysics
Context. The Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will produce unprecedentedly deep and wide photometric catalogues, enabling transformative studies of faint stellar systems such as the research of ultra-faint dwarf (UFD ...
Gatto M., Ripepi V., Bellazzini M., Tortora C., Dall’Ora M.   +4 more
doaj   +1 more source