Results 41 to 50 of about 141,253 (114)

Predicting Lyα Emission from Galaxies via Empirical Markers of Production and Escape in the KBSS [PDF]

, 2019
Lyα emission is widely used to detect and confirm high-redshift galaxies and characterize the evolution of the intergalactic medium (IGM). However, many galaxies do not display Lyα emission in typical spectroscopic observations, and intrinsic Lyα ...
Trainor, Ryan F., Chen, Yuguang, Theios, Rachel L., Steidel, Charles C., Strom, Allison L., Rudie, Gwen C.   +5 more
core  

= 7 − 9 Star Forming Galaxies with CEERS: New Insight into Bright Lyα Emitters in Ionized Bubbles

, 2023
International audienceABSTRACT We describe new JWST/NIRSpec observations of galaxies at z ≳ 7 taken from the CEERS survey. Previous observations of this area have revealed associations of Lyα emitters at redshifts (z = 7.5, 7.7, and 8.7) where the ...
Chen, Zuyi, Stark, Daniel, P, Plat, Adèle, Tang, Mengtao, Michael Topping, Charlotte Mason, Daniel P Stark, Topping, Michael, Endsley, Ryan, Zuyi Chen, Stéphane Charlot, Brant Robertson, Adèle Plat, Whitler, Lily, Charlot, Stéphane, Ryan Endsley, Lu, Ting-yi, Mengtao Tang, Senchyna, Peter, Mason, Charlotte, Robertson, Brant, Peter Senchyna, Ting-Yi Lu, Stark, Daniel P, Lily Whitler   +24 more
core   +1 more source

MAMMOTH-Subaru. III. Lyα Halo Identified by Stacking ∼3300 Lyα Emitters at z = 2.2–2.3

The Astrophysical Journal
In this paper, we present a Ly α halo (LAH) identified by stacking ∼3300 Ly α emitters (LAEs) at z = 2.2–2.3. We carry out imaging observations and data reduction with Subaru/Hyper Suprime-Cam.
Haibin Zhang, Zheng Cai, Yongming Liang, Ke Ma, Nobunari Kashikawa, Mingyu Li, Yunjing Wu, Qiong Li, Sean D. Johnson, Masami Ouchi, Xiaohui Fan   +10 more
doaj   +1 more source

Resolving circumgalactic gas flows around a z  ≈  3.6 quasar using MUSE and ALMA

Astronomy & Astrophysics
The formation and evolution of galaxies is regulated by the exchange of gas with the surrounding large-scale structures on circum- and intergalactic scales, yet little is known about the complex processes shaping the cycle of baryons in and out of ...
Galbiati M., Pensabene A., Cantalupo S., Travascio A., Pezzulli G., Decarli R., Dutta R., Muzahid S., Schaye J., Lazeyras T., Ledos N., Quadri G., Wang W.   +12 more
doaj   +1 more source

Diffuse Lyα haloes around Lyα emitters at z = 3: do dark matter distributions determine the Lyα spatial extents? [PDF]

, 2012
Using stacks of Lyα images of 2128 Lyα emitters (LAEs) and 24 proto-cluster UV-selected galaxies (LBGs) at z = 3.1, we examine the surface brightness profiles of Lyα haloes around high-z galaxies as a function of environment and UV luminosity.
Hayashino, T., Yamada, T., Ouchi, M., Matsuda, Y., Umemura, M., Ono, Y., Nakamura, Y., Mori, M., Morimoto, N., Yamauchi, R.   +9 more
core  

Before its time: A remarkably evolved protocluster core at z = 7.88

Astronomy & Astrophysics
Protoclusters represent the most extreme environments in the very early Universe. They form from large-scale dark matter overdensities, harbouring an overabundance of galaxies fed by large gas reservoirs.
Witten Callum, Oesch Pascal A., McClymont William, Meyer Romain A., Fudamoto Yoshinobu, Sijacki Debora, Laporte Nicolas, Bennett Jake S., Simmonds Charlotte, Giovinazzo Emma, Danhaive A. Lola, Ciesla Laure, Carvajal-Bohorquez Cristian, Trebitsch Maxime   +13 more
doaj   +1 more source

Lyα emission in galaxies at z ≃ 5−6: new insight from JWST into the statistical distributions of Lyα properties at the end of reionization [PDF]

JWST has recently sparked a new era of Lyα spectroscopy, delivering the first measurements of the Lyα escape fraction and velocity profile in typical galaxies at z ≃ 6−10.
Tacchella, S, Ellis, RS, Chen, Z, Whitler, L, Baker, WM, Arribas, S, Stark, DP, Robertson, B, Williams, CC, Witstok, J, Willott, C, Tang, M, Bunker, AJ, Chevallard, J, Charlot, S, Kumari, N, Lyu, J, Sun, F, Maiolino, R, Maseda, MV, Boyett, K, Bhatawdekar, R, Jones, GC, Saxena, A, Topping, M   +24 more
core   +3 more sources

A Survey of Lyα Emission around Damped Lyα Absorbers at z ≈ 2 with the Keck Cosmic Web Imager

The Astrophysical Journal
We present Keck Cosmic Web Imager Ly α integral field spectroscopy of the fields surrounding 14 damped Ly α absorbers (DLAs) at z ≈ 2. Of these 14 DLAs, nine have high metallicities ([M/H] > − 0.3), and four of those nine feature a CO-emitting galaxy at ...
Grecco A. Oyarzún, Marc Rafelski, Nissim Kanekar, J. Xavier Prochaska, Marcel Neeleman, Regina A. Jorgenson   +5 more
doaj   +1 more source

A NOEMA pilot survey of [C II] line emission in luminous galaxies at z  ≈  6

Astronomy & Astrophysics
We present Northern Extended Millimeter Array (NOEMA) observations of four luminous galaxies at z ∼ 6, when the Universe was less than ∼1 Gyr old. These galaxies are detected in the [C II] 158 μm fine-structure line, and three also exhibit underlying ...
Martínez-Cuadra B., Herrera-Camus R., Förster Schreiber N., Tacconi L., Genzel R., Liu D., Harikane Y., Jolly J. B., Naab T., Neri R., Tozzi G., Übler H.   +11 more
doaj   +1 more source

Building the Bridge between Damped Lyα Absorbers and Lyman-Break Galaxies

, 2003
In 2000, we started the program "Building the Bridge between Damped Lyman-α Absorbers and Lyman-Break Galaxies: Lyα Selection of Galaxies" at the European Southern Observatory's Very Large Telescope (VLT).
Burud, I., Ledoux, C., Møller, P., Leibundgut, B., Fynbo, J. P.U., Thomsen, B.   +5 more
core   +1 more source