Results 21 to 30 of about 149 (117)

Exploring the gaseous halos of z > 3 radio galaxies with UVES and JWST/NIRSpec

Astronomy & Astrophysics
High-redshift radio galaxies are among the most massive galaxies in the Universe and sites of extreme active galactic nucleus feedback processes, powering energetic radio jets.
Ritter Jelena, Wang Wuji, Wylezalek Dominika, De Breuck Carlos, Vernet Joël, Arrigoni Battaia Fabrizio   +5 more
doaj   +1 more source

MUSE Analysis of Gas around Galaxies (MAGG)

Astronomy & Astrophysics
We investigate the connection between strong, blended Lyα absorption systems (SBLAs) and ≈1000 Lyα-emitting galaxies (LAEs) at z ≳ 3 in 28 quasar fields from the MUSE Analysis of Gas around Galaxies (MAGG) survey. Selecting SBLAs as spectral regions with
Galbiati Marta, Tornotti Davide, Fumagalli Michele, Fossati Matteo, Pieri Matthew   +4 more
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Delayed Massive-star Mechanical Feedback at Low Metallicity

The Astrophysical Journal, 2023
The classical model of massive-star mechanical feedback is based on effects at solar metallicity ( Z _⊙ ), yet feedback parameters are very different at low metallicity.
Michelle C. Jecmen, M. S. Oey
doaj   +1 more source

BLUEPRINT: Blue-dominant Lyman-α emission as evidence of gas inflow in ultra-low-mass galaxies at z = 3

Astronomy & Astrophysics
We report the detection of a clumpy, blue-dominated Lyman-α (Lyα) emission at z = 3.066 located in the heart of a cosmic web filament in the MUSE eXtremely Deep Field (MXDF).
Mukherjee Tamal, Li Zhihui, Zafar Tayyaba, Nanayakkara Themiya, Tornotti Davide, Costantin Luca, Aalia Imam Uzma   +6 more
doaj   +1 more source

GA-NIFS: AGN activity in a Lyα emitter within a triple-AGN system anchored by a passive galaxy at z = 3

Astronomy & Astrophysics
Context. Massive quenched galaxies at z > 3 challenge models of early galaxy evolution, as their rapid formation and abrupt quenching require efficient feedback, which is often linked to active galactic nuclei (AGNs).
Perna Michele, Arribas Santiago, Hamed Mahmoud, D’Eugenio Francesco, Lamperti Isabella, Bunker Andrew J., Carniani Stefano, Charlot Stéphane, Maiolino Roberto, Rodríguez Del Pino Bruno, Übler Hannah, Böker Torsten, Bertola Elena, Cresci Giovanni, Venturi Giacomo, Ginolfi Michele, Villar Martín Montserrat, Zamora Sandra   +17 more
doaj   +1 more source

Using Lyα Absorption to Measure the Intensity and Variability of z ∼ 2.4 Ultraviolet Background Light

The Astrophysical Journal
We present measurements of z  ∼ 2.4 ultraviolet (UV) background light using Ly α absorption from galaxies at z  ∼ 2–3 in the Hobby–Eberly Telescope Dark Energy Experiment (HETDEX) database.
Laurel H. Weiss, Karl Gebhardt, Dustin Davis, Erin Mentuch Cooper, Maja Lujan Niemeyer, Mahdi Qezlou, Mahan Mirza Khanlari, Robin Ciardullo, Daniel Farrow, Eric Gawiser, Simon Gazagnes, Caryl Gronwall, Gary J. Hill, Donald P. Schneider   +13 more
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A Cosmic Archipelago of lensed metal-poor galaxies at z ∼ 6

Astronomy & Astrophysics
The Cosmic Archipelago is an ensemble of galaxies, strongly lensed by the Hubble Frontier Fields cluster MACS J0416, displaying some of the most extreme physical properties known at z ~ 6.14.
Bolamperti A., Messa M., Zanella A., Vanzella E., Bergamini P., Loiacono F., Koekemoer A. M., Vernet J., Windhorst R. A., Adamo A., Annibali F., Calura F., Castellano M., Diego J. M., Grillo C., Gronke M., Iani E., Meneghetti M., Mercurio A., Nakajima K., Ravindranath S., Ricotti M., Rosati P., Yan H.   +23 more
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Extreme equivalent-width-selected low-mass starbursts at z = 4 − 9: Insights into their role in cosmic reionization

Astronomy & Astrophysics
We investigate the properties of extreme emission line galaxies (EELGs) at z = 4 − 9 and their role in reionization. Compact, low-mass galaxies with intense optical emission lines are linked to elevated specific star formation rates (sSFRs) and recent ...
Llerena M., Pentericci L., Amorín R., Ferrara A., Dickinson M., Arevalo-Gonzalez F., Calabrò A., Napolitano L., Mascia S., Arrabal Haro P., Begley R., Cleri N. J., Davis K., Hu W., Kartaltepe J. S., Koekemoer A. M., Lucas R. A., McGrath E., McLeod D. J., Papovich C., Stanton T. M., Taylor A. J., Tripodi R., Wang X., Yung L. Y. A.   +24 more
doaj   +1 more source

The Lyα Reference Sample. XIV. Lyα Imaging of 45 Low-redshift Star-forming Galaxies and Inferences on Global Emission

The Astrophysical Journal Supplement Series, 2023
We present Ly α imaging of 45 low-redshift star-forming galaxies observed with the Hubble Space Telescope. The galaxies have been selected to have moderate to high star formation rates (SFRs) using far-ultraviolet (FUV) luminosity and H α equivalent ...
Jens Melinder, Göran Östlin, Matthew Hayes, Armin Rasekh, J. Miguel Mas-Hesse, John M. Cannon, Daniel Kunth, Peter Laursen, Axel Runnholm, E. Christian Herenz, Matteo Messa, Daniel Schaerer, Anne Verhamme, T. Emil Rivera-Thorsen, Lucia Guaita, Thomas Marquart, Johannes Puschnig, Alexandra Le Reste, Andreas Sandberg, Emily Freeland, Joanna Bridge   +20 more
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MAMMOTH-Subaru. IV. Large Scale Structure and Clustering Analysis of Lyα Emitters and Lyα Blobs at z = 2.2–2.3

The Astrophysical Journal
We report the large scale structure and clustering analysis of Ly α emitters (LAEs) and Ly α blobs (LABs) at z  = 2.2–2.3. Using 3341 LAEs, 117 LABs, and 58 bright (Ly α luminosity L _Ly _α  > 10 ^43.4 erg s ^−1 ) LABs at z  = 2.2–2.3 selected with ...
Haibin Zhang, Zheng Cai, Mingyu Li, Yongming Liang, Nobunari Kashikawa, Ke Ma, Yunjing Wu, Qiong Li, Sean D. Johnson, Satoshi Kikuta, Masami Ouchi, Xiaohui Fan, Yuanhang Ning   +12 more
doaj   +1 more source