Results 101 to 110 of about 3,113,929 (197)

Galaxy Protoclusters as Drivers of Cosmic Reionization: I. Bubble Overlap at Redshift z ∼ 7 in LAGER-z7OD1

The Astrophysical Journal
Since the launch of JWST, the sample size of reionization-era Ly α emitters (LAEs) has been steadily growing; yet inferences about the neutral hydrogen fraction in the intergalactic medium exhibit increasing variance at redshift z ≈ 7, possibly ...
Crystal L. Martin, Weida Hu, Isak G. B. Wold, Andreas Faisst, Cristóbal Moya-Sierralta, Sangeeta Malhotra, James E. Rhoads, Luis Felipe Barrientos, Yuichi Harikane, Leopoldo Infante, Anton M. Koekemoer, Jorge Gonzalez Lopez, Masami Ouchi, Junyan Xu, Jiayang Yang, L. Y. Aaron Yung, John R. Weaver, Henry McCracken, Zhenya Zheng, Junxian Wang   +19 more
doaj   +1 more source

Exploring the star formation histories of galaxies [PDF]

, 1999
In this thesis, I explore the star formation histories of both spiral and elliptical galaxies. In Part 1,1 present an in-depth study of the star formation histories of spiral galaxies with a wide range of properties. Optical and near-infrared colours are
Bell, Eric Findlay, Bell, E.F.
core  

Discovery of Giant Bubbles in the Hot Gaseous Halo of the Massive Disk Galaxy NGC 6286

The Astrophysical Journal
Based on archival Chandra X-ray observation, optical integral-field spectroscopic data, and radio interferometric data, we report the discovery of a pair of giant bubbles (with a projected radius ∼5 kpc) of ionized gas emerging from a highly inclined ...
Lin He, Zhiyuan Li, Zongnan Li, Rubén García-Benito, Yuanqi Liu, Meicun Hou   +5 more
doaj   +1 more source

A study of interacting galaxies from the Arp-Madore catalog [PDF]

We present Gemini Multi-Object Spectrograph (GMOS) spectroscopic observations of 95 galaxies from the Arp & Madore (1987) catalog of peculiar galaxies. These galaxies have been selected because they appear to be in pairs and small groups.
Rembold, Sandro B., Almeida, Cristina Ramos, Pedro H. Cezar, Cezar, Pedro H., Sandro B. Rembold, Krabbe, Angela C., Pastoriza, Miriani G., Rogério Riffel, Angela C. Krabbe, Riffel, Rogério, Cristina Ramos Almeida, Miriani G. Pastoriza   +11 more
core   +1 more source

WALLABY Pilot Survey: Blinded by the Light—Discovery of a Fourth Member in the ESO 179-013 System

The Astrophysical Journal
We present new ASKAP/WALLABY H i observations of the nearby dwarf galaxy system ESO 179-013 (Kathryn’s Wheel), the nearest known collisional ring galaxy, located ∼10 Mpc away in the Local Void.
R. Guimarães Silva, M. Grossi, D. R. Gonçalves, E. Corbelli, B. Catinella, N. Deg, B. W. Holwerda, R. Ianjamasimanana, D. A. Leahy, P. E. Mancera Piña, S. Sankar, K. Spekkens, S. F. ur Rahman, T. Westmeier, O. I. Wong   +14 more
doaj   +1 more source

Pair-Matching of Radio-Loud and Radio-Quiet AGNs

Frontiers in Astronomy and Space Sciences, 2017
Active galactic nuclei (AGNs) are known to cover an extremely broad range of radio luminosities and the spread of their radio-loudness is very large at any value of the Eddington ratio.
Dorota Kozieł-Wierzbowska, Grażyna Stasińska, Natalia Vale Asari, Marek Sikora, Elisa Goettems, Anna Wójtowicz   +5 more
doaj   +1 more source

Episodic Feedback in Triple Active Galactic Nucleus Candidate SDSS J0849+1114 Revealed by Extended Ionized Gas

The Astrophysical Journal
Galaxy mergers funnel gas toward the nuclei, igniting starbursts and active galactic nuclei (AGNs). The AGN feedback can reshape the host galaxy and regulate both star formation and supermassive black hole accretion.
Xiaoyu Xu, Meicun Hou, Zhiyuan Li, Sijia Peng, Zhao Su, Zongnan Li, Fuyan Bian, Junfeng Wang   +7 more
doaj   +1 more source

The Hubble Arp Galaxy Survey

The Astrophysical Journal Supplement Series
The typical galaxy in the local Universe is expected to be in a self-regulated quasi-equilibrium, displaying a settled morphology that falls within the Hubble sequence.
Julianne J. Dalcanton, Meredith J. Durbin, Benjamin F. Williams   +2 more
doaj   +1 more source

A multiwavelength survey of interacting galaxies [PDF]

, 1990
Galaxy-galaxy collisions are known to produce drastic changes in morphology and, in many cases, enhance the level of star formation activity in galaxies. In order to better quantify the effects that interactions have on the star formation characteristics
Werner, M., Lamb, Susan A., Bushouse, Howard A., Lo, K.-Y., Lord, S.   +4 more
core  

COSMOS-Web: The Role of Galaxy Interactions and Disk Instabilities in Producing Starbursts at z < 4

The Astrophysical Journal
We study of the role of galaxy–galaxy interactions and disk instabilities in producing starburst activity in galaxies out to z = 4. For this, we use a sample of 387 galaxies with robust total star formation rate measurements from Herschel, gas masses ...
Andreas L. Faisst, Lilan Yang, M. Brinch, C. M. Casey, N. Chartab, M. Dessauges-Zavadsky, N. E. Drakos, S. Gillman, G. Gozaliasl, C. C. Hayward, O. Ilbert, P. Jablonka, A. Kaminsky, J. S. Kartaltepe, A. M. Koekemoer, V. Kokorev, E. Lambrides, D. Liu, C. Maraston, C. L. Martin, A. Renzini, B. E. Robertson, D. B. Sanders, Z. Sattari, N. Scoville, C. M. Urry, A. P. Vijayan, J. R. Weaver, H. B. Akins, N. Allen, R. C. Arango-Toro, O. R. Cooper, M. Franco, F. Gentile, S. Harish, M. Hirschmann, A. A. Khostovan, C. Laigle, R. L. Larson, M. Lee, Z. Liu, A. S. Long, G. Magdis, R. Massey, H. J. McCracken, J. McKinney, L. Paquereau, J. Rhodes, R. M. Rich, M. Shuntov, J. D. Silverman, M. Talia, S. Toft, J. A. Zavala   +53 more
doaj   +1 more source