Results 71 to 80 of about 182 (139)

The Stellar Origin of “V-shaped” Spectral Energy Distributions in Lyα-emitting Little Red Dots Revealed by JWST/MIRI

The Astrophysical Journal
Understanding the nature of the high-redshift “V-shaped” little red dots (LRDs) recently uncovered by the James Webb Space Telescope (JWST) is crucial for constraining the early coevolution of galaxies and supermassive black holes (SMBHs).
Jian Ren, F. S. Liu, Nan Li, Qi Song, Pinsong Zhao, Qifan Cui, Yubin Li, Hao Mo, Guanghuan Wang, Hassen M. Yesuf, Weichen Wang   +10 more
doaj   +1 more source

Disentangling the galactic and intergalactic components in 313 observed Lyman-alpha line profiles between redshift 0 and 5

The Open Journal of Astrophysics
Lyman-Alpha (Ly$\alpha$) photons emitted in star-forming galaxies undergo complex radiative transfer through the interstellar (ISM), circumgalactic (CGM), and intergalactic medium (IGM), imprinting characteristic signatures on their observed line ...
Siddhartha Gurung-López, Chris Byrohl, Max Gronke, Daniele Spinoso, Alberto Torralba, Alberto Fernández-Soto, Pablo Arnalte-Mur, Vicent J. Martínez   +7 more
doaj   +1 more source

Lyman-alpha Cooling Emission from Galaxy Formation

, 2010
Recent studies have shown that galaxies accrete most of their baryons via the cold mode, from streams with temperatures T~10^4-10^5 K. At these temperatures, the streams should radiate primarily in the Lya line and have therefore been proposed as a model to power the extended, high-redshift objects known as Lya blobs and other high-redshift Lya sources.
Faucher-Giguere, C. -A., Keres, D., Dijkstra, M., Hernquist, L., Zaldarriaga, M.   +4 more
openaire   +2 more sources

Deciphering Spatially Resolved Lyman-Alpha Profiles in Reionization Analogs: The Sunburst Arc at Cosmic Noon

The Open Journal of Astrophysics
The hydrogen Lyman-alpha (Ly$\alpha$) emission line, the brightest spectral feature of a photoionized gas, is considered an indirect tracer of the escape of Lyman continuum (LyC) photons, particularly when the intergalactic medium is too opaque for ...
Erik Solhaug, Hsiao-Wen Chen, Mandy C. Chen, Fakhri Zahedy, Max Gronke, Magdalena J. Hamel-Bravo, Matthew B. Bayliss, Michael D. Gladders, Sebastián López, Nicolás Tejos   +9 more
doaj   +1 more source

Lyman Alpha Emitters in the Hierarchically Clustering Galaxy Formation

, 2007
14 pages, 7 figures, 1 table; accepted to ApJ; the html abstract is replaced to match the accepted version, the .ps and .pdf files are strictly identical between the 2nd and the 3rd ...
Kobayashi, Masakazu A. R., Totani, Tomonori, Nagashima, Masahiro   +2 more
openaire   +2 more sources

In Search of the First Stars: An Ultra-compact and Very-low-metallicity Lyα Emitter Deep within the Epoch of Reionization

The Astrophysical Journal
We present JWST observations of a gravitationally lensed, extremely metal-poor galaxy at redshift z = 8.203 ± 0.001 from the CANUCS survey. Based on the low oxygen to Balmer line ratios, we infer a gas-phase metallicity of 12 + log(O/H) = 6.85 (1.4 ...
Chris J. Willott, Yoshihisa Asada, Kartheik G. Iyer, Jon Judež, Gregor Rihtaršič, Nicholas S. Martis, Ghassan T. E. Sarrouh, Guillaume Desprez, Anishya Harshan, Lamiya Mowla, Gaël Noirot, Giordano Felicioni, Maruša Bradač, Gabe Brammer, Adam Muzzin, Marcin Sawicki, Jacqueline Antwi-Danso, Vladan Markov, Roberta Tripodi   +18 more
doaj   +1 more source

Discovery of diffuse optical emission lines from the inner Galaxy: Evidence for LI(N)ER-like gas. [PDF]

Sci Adv, 2020
Krishnarao D, Benjamin RA, Haffner LM.
europepmc   +1 more source

Sizing up Lyman-alpha and Lyman Break Galaxies

, 2011
Submitted to ApJ letters, comments ...
Malhotra, Sangeeta, Rhoads, James E., Finkelstein, Steven L., Hathi, Nimish, Nilsson, Kim, McLinden, Emily, Pirzkal, Norbert   +6 more
openaire   +2 more sources

The Redshift Evolution of Extended Lyα Emission in HETDEX. I. Imaging Methods and Emission Measurements

The Astrophysical Journal
We investigate extended Ly α emission using integral-field unit (IFU) data from the Hobby–Eberly Telescope Dark Energy Experiment (or HETDEX). We apply the modified Shepard method to image 106,853 Ly α emitters (LAEs) and median-stack them as functions ...
Brianna McKay, Sarah Tuttle, Erin Mentuch Cooper, Dustin Davis, Robin Ciardullo, Daniel J. Farrow, Steven L. Finkelstein, Karl Gebhardt, Chenxu Liu, Gregory Zeimann, Chris Byrohl   +10 more
doaj   +1 more source

Lyman Alpha Emitting Galaxies as a Probe of Reionization

, 2014
27 pages, 19 figures. Invited review submitted to PASA following revision based on referee report.
openaire   +2 more sources