Results 111 to 120 of about 30,724 (219)

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
core  

Preliminary Evidence for Lensing-induced Alignments of High-redshift Galaxies in JWST-CEERS

The Astrophysical Journal
The majority of low-mass ( ${\mathrm{log}}_{10}{M}_{* }/{M}_{\odot }=9\mbox{--}10$ ) galaxies at high redshift ( z  > 1) appear elongated in projection. We use JWST-CEERS observations to explore the role of gravitational lensing in this puzzle.
Viraj Pandya, Abraham Loeb, Elizabeth J. McGrath, Guillermo Barro, Steven L. Finkelstein, Henry C. Ferguson, Norman A. Grogin, Jeyhan S. Kartaltepe, Anton M. Koekemoer, Casey Papovich, Nor Pirzkal, L. Y. Aaron Yung   +11 more
doaj   +1 more source

Dwarf Galaxies Hosting Extreme Star-forming Regions and (Variable) Active Galactic Nuclei at Radio Wavelengths

The Astrophysical Journal
We present a detailed study of radio-detected dwarf galaxies ( M _⋆  ≲ 3 × 10 ^9 M _⊙ ) to characterize extreme star formation and search for (variable) radio active galactic nuclei (AGNs). Our sample comes from A. E.
John-Michael Eberhard, Amy E. Reines
doaj   +1 more source

Measuring the star formation rate density from CNOC2 [PDF]

, 2006
This thesis charts the evolution of the Universal Star Formation Rate Density (SFRD) across the redshift range 0.2 < z < 0.6, using the 2nd Canadian Network for Observational Cosmology Survey (CN0C2).
Whitaker, Richard James
core  

Radial Distributions of Star Formation and Gas-phase Metallicity in Spiral–Elliptical Galaxy Pairs

The Astrophysical Journal
Using integral-field spectroscopy from the fourth-generation Sloan Digital Sky Survey Mapping Nearby Galaxies at Apache Point Observatory, we investigate the radial distributions of the star formation rates (SFRs) and gas-phase metallicities in spiral ...
Cailu Shi, Shuai Feng, Shiyin Shen, Linlin Li, Wenyuan Cui, Guozhen Hu   +5 more
doaj   +1 more source

Long Period Variables in Local Group Dwarf Galaxies [PDF]

, 2006
In this work the results are presented of an extensive search for Long Period Variables stars (LPVs) in a sample of Local Group irregular dwarf galaxies.
Snigula, Jan, Snigula, J., Snigula, Jan M.   +2 more
core  

The formation of satellite galaxies and their associated black holes [PDF]

, 2006
Not ...
Libeskind, Noam Isaac
core  

Counter-Rotating Disks in Galaxies

, 2023
reservedCounter-rotation is a phenomenon found in some galaxies; it happens when a counter-rotating disk which rotates in an opposite direction to the main disk is found.
EL-SAYEGH, ALYAA EL-HAK
core  

The ALPINE-CRISTAL-JWST Survey: Stellar and Nebular Dust Attenuation of Main-sequence Galaxies at z ∼ 4–6

The Astrophysical Journal
Characterizing dust attenuation is crucial for revealing the intrinsic physical properties of galaxies. We present an analysis of dust attenuation in 18 spectroscopically confirmed star-forming main-sequence galaxies at z = 4.4−5.7 observed with JWST ...
Akiyoshi Tsujita, Seiji Fujimoto, Andreas Faisst, Médéric Boquien, Juno Li, Andrea Ferrara, Andrew J. Battisti, Poulomi Dam, Manuel Aravena, Matthieu Béthermin, Caitlin M. Casey, Olivia R. Cooper, Steven L. Finkelstein, Michele Ginolfi, Diego A. Gómez-Espinoza, Ali Hadi, Rodrigo Herrera-Camus, Edo Ibar, Hanae Inami, Gareth C. Jones, Anton M. Koekemoer, Kotaro Kohno, Brian C. Lemaux, Zhaoxuan Liu, Ilse De Looze, Ikki Mitsuhashi, Bahram Mobasher, Juan Molina, Ambra Nanni, Francesca Pozzi, Naveen A. Reddy, Monica Relano, Giulia Rodighiero, Michael Romano, David B. Sanders, Prasad Sawant, Manuel Solimano, Laura Sommovigo, Justin Spilker, Ken-ichi Tadaki, Livia Vallini, Vicente Villanueva, Wuji Wang, Giovanni Zamorani, ALPINE+CRISTAL collaborations   +44 more
doaj   +1 more source

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