Results 1 to 10 of about 139 (107)

Spectroscopic confirmation of two luminous galaxies at a redshift of 14 [PDF]

Nature
Aayush Saxena, Santiago Arribas, Renske Smit   +2 more
exaly   +2 more sources

CH+(1-0) in a z~2.8 galaxy group: Probe of multi-phasic turbulent gas reservoirs [PDF]

EPJ Web of Conferences, 2022
Starburst galaxies at redshifts z~2 to 4 are among the most intensely star-forming galaxies in the universe. The way they accrete their gas to form stars at such high rates is still a controversial issue.
Vidal-García Alba, Falgarone Edith, Battaia Fabrizio Arrigoni, Godard Benjamin, Ivison Rob J., Zwaan Martin A., Herrera Cinthya, Frayer David, Andreani Paola, Li Quong, Gavazzi Raphaël, Bergin Edwin, Walter Fabian, Omont Alain   +13 more
doaj   +1 more source

The polarization of scattered Lyα radiation around high-redshift galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
The high-redshift Universe contains luminous Lya emitting sources such as galaxies and quasars. The emitted Lyα radiation is often scattered by surrounding neutral hydrogen atoms. We show that the scattered Lyα radiation obtains a high level of polarization for a wide range of likely environments of high-redshift galaxies.
Mark Dijkstra, Abraham Loeb
openaire   +1 more source

A comparison of metal and Ly-α absorption in galactic haloes [PDF]

Serbian Astronomical Journal, 1998
The metallicity structure of galactic haloes is one of the major unknowns in modern galactic astrophysics and observational cosmology. Hereby we outline a very simple method for obtaining at least a crude picture of gas abundances, based on ...
Ćirković M.M.
doaj   +1 more source

On the total absorption cross-section of galaxies - II: The case of λ cosmologies and covering factor variation [PDF]

Serbian Astronomical Journal, 1998
In this work we expand the previous discussion of the plausibility of hypothesis of origin of the Lyα forest absorption systems in haloes of normal galaxies in connection with the HubbleDeepField (HDF) data.
Ćirković M.M., Samurović S.
doaj   +1 more source

Minihalo model for the low-redshift Lyα absorbers revisited [PDF]

Serbian Astronomical Journal, 2008
We reconsider the basic properties of the classical minihalo model of Rees and Milgrom in light of the new work, both observational (on 'dark galaxies' and masses of baryonic haloes) and theoretical (on the cosmological mass function and the history of ...
Lalović A., Ćirković M.M.
doaj   +1 more source

A Spectroscopic Survey of Lyα Emitters and Lyα Luminosity Function at Redshifts 3.7 and 4.8

The Astrophysical Journal, 2023
We present a spectroscopic survey of Ly α emitters (LAEs) at z ∼ 3.7 and z ∼ 4.8. The LAEs are selected using the narrowband technique based on the combination of deep narrowband and broadband imaging data in two deep fields, and then spectroscopically ...
Weiyang Liu, Linhua Jiang
doaj   +1 more source

Lyman-alpha emission at the end of reionization: Line strengths and profiles from MMT and JWST observations at z ∼ 5–6

Astronomy & Astrophysics
Aims. With JWST, it is now possible to use Lyman-Alpha (Lyα) emission from galaxies beyond z > 8 to trace neutral hydrogen in the intergalactic medium (IGM) as the Universe became reionized.
Prieto-Lyon Gonzalo, Mason Charlotte A., Strait Victoria, Brammer Gabriel, Naidu Rohan P., Meyer Romain A., Oesch Pascal, Tacchella Sandro, Covelo-Paz Alba, Giovinazzo Emma, Xiao Mengyuan   +10 more
doaj   +1 more source

Lyα visibility from z = 4.5 to 11 in the UDS field: Evidence for a high neutral hydrogen fraction and small ionized bubbles at z ∼ 7

Astronomy & Astrophysics
The resonant scattering nature of Lyα photons interacting with neutral hydrogen makes Lyα emitters (LAEs) robust tracers of the intergalactic neutral hydrogen fraction, and thus sensitive probes of cosmic reionization.
Napolitano L., Pentericci L., Dickinson M., Arrabal Haro P., Taylor A. J., Calabrò A., Bhagwat A., Santini P., Arevalo-Gonzalez F., Begley R., Castellano M., Ciardi B., Donnan C. T., Dottorini D., Dunlop J. S., Finkelstein S. L., Fontana A., Giavalisco M., Hirschmann M., Jung I., Koekemoer A. M., Kokorev V., Llerena M., Lucas R. A., Mascia S., Merlin E., Pérez-González P. G., Stanton T. M., Tripodi R., Wang X., Weiner B. J.   +30 more
doaj   +1 more source

REBELS-IFU: Linking damped Lyman-α absorption to [C II] emission and dust content in the Epoch of Reonisation

Astronomy & Astrophysics
Neutral gas present in galaxies during the Epoch of Reionisation (EoR) is responsible for regulating star formation, dust growth, and the escape of ionising photons, making it a key ingredient in our understanding of both galaxy assembly and reionisation.
Rowland Lucie E., Heintz Kasper E., Algera Hiddo, Stefanon Mauro, Hodge Jacqueline, Bouwens Rychard, Aravena Manuel, Astles Lucy, da Cunha Elisabete, Dayal Pratika, Ferrara Andrea, Fisher Rebecca, González Valentino, Inami Hanae, Komarova Lena, de Looze Ilse, Nanayakkara Themiya, Ormerod Katherine, Pallottini Andrea, Pollock Clara L., Smit Renske, van der Werf Paul, Witstok Joris   +22 more
doaj   +1 more source