Results 131 to 140 of about 833,890 (231)

JWST/MIRI Reveals the True Number Density of Massive Galaxies in the Early Universe

The Astrophysical Journal Letters
Early JWST studies reporting an unexpected abundance of massive galaxies at z  ∼ 5–8 challenge galaxy formation models in the ΛCDM framework. Previous stellar mass ( M _⋆ ) estimates suffered from large uncertainties due to the lack of rest-frame near ...
Tao Wang, Hanwen Sun, Luwenjia Zhou, Ke Xu, Cheng Cheng, Zhaozhou Li, Yangyao Chen, H. J. Mo, Avishai Dekel, Tiancheng Yang, Yijun Wang, Longyue Chen, Xianzhong Zheng, Zheng Cai, David Elbaz, Y.-S. Dai, J.-S. Huang   +16 more
doaj   +1 more source

Mapping the Galaxy Color–Star Formation Rate Relation with Manifold Learning and Infrared Image Stacking

The Astrophysical Journal
Modern surveys present us with billions of faint galaxies for which we only have broadband images in ∼6–8 optical-to-near-infrared (NIR) filters. Galaxy star formation rates (SFRs) are difficult to estimate accurately without spectroscopic diagnostics or
Yu-Heng Lin, Daniel Masters, Andreas L. Faisst, Harry Teplitz, Olivier Ilbert, Matthieu Bethermin, Shoubaneh Hemmati, Vihang Mehta, Jason D. Rhodes, Gregory L. Walth   +9 more
doaj   +1 more source

The middle infrared properties of OH megamaser host galaxies

, 2014
We compiled all 119 OH maser galaxies (110 out of them are megamasers, i.e., L-OH > 10 L-circle dot) published so far and cross-identified these OH masers with the Wide-Field Infrared Survey Explorer (WISE) catalog, to investigate the middle infrared ...
Zhu, Q. F., Guo, Q., Zhang, J. S., Di, G. X., J. Z. Wang, J. Wang, Wang, J. Z., Wang, J., G. X. Di, Q. F. Zhu, Q. Guo, J. S. Zhang   +11 more
core   +1 more source

Infrared emission from z ∼ 6.5 quasar host galaxies: a direct estimate of dust physical properties

Astronomy & Astrophysics
Quasars at the dawn of cosmic time (z > 6) are fundamental probes for investigating the early coevolution of supermassive black holes and their host galaxy.
Costa M., Decarli R., Pozzi F., Cox P., Meyer R. A., Pensabene A., Venemans B. P., Walter F., Xu F.   +8 more
doaj   +1 more source

Near-infrared surface photometry of a sample of barred galaxies [PDF]

, 2007
We have obtained deep J and Ks images of a sample of nine barred galaxies in order to collect a reliable and homogeneous set of images to which N-body simulations of barred galaxies will be compared.
LUIS CARRASCO BAZUA, ELSA RECILLAS PISHMISH   +1 more
core  

A Complete 16 μm Selected Galaxy Sample at z ∼ 1. II. Morphological Analysis

The Astrophysical Journal
We present a morphological analysis of the 16 μ m flux-density-limited galaxy sample at 0.8 < z < 1.3 from Huang et al. (2021). At the targeted redshift, the 16 μ m emission corresponds to the polycyclic aromatic hydrocarbon feature from intense star ...
Piaoran Liang, Y. Sophia Dai, Jia-Sheng Huang, Cheng Cheng, Yaru Shi   +4 more
doaj   +1 more source

The clustering and number counts of galaxies [PDF]

, 2001
We present a Curtis Schmidt CCD survey of two strips of the sky overlapping with the NGC and SGC 2dFGRS fields. When this survey is used in conjunction with data from the APM Galaxy Survey, DUKST, 2dFGRS and 2MASS, we find that there is a hole in the SGC
Busswell, G.S., Busswell, Geoffrey Stuart   +1 more
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Extended Star Formation in Luminous Infrared Galaxies at z ∼ 1 in the SMILES Field

The Astrophysical Journal
Luminous infrared galaxies (LIRGs) and ultraluminous infrared galaxies (ULIRGs) in the local Universe are highly centrally concentrated in the mid-infrared (MIR) and substantially more likely than non-(U)LIRGs to be involved in mergers.
Michael K. Florian, George H. Rieke, Stacey Alberts, Irene Shivaei, Jakob M. Helton, Jianwei Lyu, Kevin N. Hainline, Zhiyuan Ji   +7 more
doaj   +1 more source

Ultraluminous infrared galaxies [PDF]

, 1987
The IRAS survey of the local universe has revealed the existence of a class of ultraluminous infrared galaxies with L(8 to 1000 micrometer) greater than 10 to the 12th L sub 0 that are slightly more numerous, and as luminous as optically selected quasars
Persson, S. E., Neugebauer, G., Soifer, B. T., Scoville, N. Z., Madore, B. F., Elias, J. H., Matthews, K., Sanders, D. B., Danielson, G. E., Persson, C. J.   +9 more
core  

The Use of Infrared Technology To Detect Heat Loss

, 1979
Infrared refers to electro magnetic energy with a wave length longer than those of visible light. Researchers developed methods to quantify, focus and form real-time images to infrared energy. This spawned the development of infrared Thenrography.
Faulkner, K.
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