Results 1 to 10 of about 1,024,799 (290)

THE SPECTROSCOPIC PROPERTIES OF Lyα-EMITTERS ATz∼ 2.7: ESCAPING GAS AND PHOTONS FROM FAINT GALAXIES [PDF]

The Astrophysical Journal, 2015
We present a spectroscopic survey of 318 faint (R ~ 27, L ~ 0.1 L*), Lyα-emission-selected galaxies (LAEs) in regions centered on the positions of hyperluminous QSOs (HLQSOs) at 2.5 ν_(sec). Further observations, including deep spectroscopy in the observed near-IR, will further probe the evolution and enrichment of these galaxies in the context of ...
Ryan F. Trainor, Charles C. Steidel, Allison L. Strom, Gwen C. Rudie   +3 more
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Less and more IGM-transmitted galaxies from z ∼ 2.7 to z ∼ 6 from VANDELS and VUDS [PDF]

Astronomy & Astrophysics, 2021
Aims. Our aim is to analyze the variance of the intergalactic medium (IGM) transmission by studying this parameter in the rest-frame UV spectra of a large sample of high-redshift galaxies. Methods. We made use of the VIMOS Ultra Deep Survey and the VANDELS public survey to gain insight into the far UV spectrum of 2.7 < z < 6 galaxies.
R. Thomas, L. Pentericci, O. Le Fèvre, A. M. Koekemoer, M. Castellano, A. Cimatti, F. Fontanot, A. Gargiulo, B. Garilli, M. Talia, R. Amorín, S. Bardelli, S. Cristiani, G. Cresci, M. Franco, J. P. U. Fynbo, N. P. Hathi, P. Hibon, Y. Khusanova, V. Le Brun, B. C. Lemaux, F. Mannucci, D. Schaerer, G. Zamorani, E. Zucca   +24 more
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CONSTRAINTS ON HYPERLUMINOUS QSO LIFETIMES VIA FLUORESCENT Lyα EMITTERS AT Z ≃ 2.7 [PDF]

The Astrophysical Journal, 2013
We present observations of a population of Lya emitters (LAEs) exhibiting fluorescent emission via the reprocessing of ionizing radiation from nearby hyperluminous QSOs. These LAEs are part of a survey at redshifts 2.5 < z < 2.9 combining narrow-band photometric selection and spectroscopic follow-up to characterize the emission mechanisms ...
Ryan Trainor, Charles C. Steidel
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PINPOINTING THE MOLECULAR GAS WITHIN AN Lyα BLOB ATz∼ 2.7 [PDF]

The Astrophysical Journal, 2014
We present IRAM Plateau de Bure Interferometer observations of the CO(3-2) and CO(5-4) line transitions from an Lyα blob at z ~ 2.7 in order to investigate the gas kinematics, determine the location of the dominant energy source, and study the physical conditions of the molecular gas. CO line and dust continuum emissions are detected at the location of
Yujin Yang, Fabian Walter, Roberto Decarli, Frank Bertoldi, Axel Weiss, Arjun Dey, Moire K. M. Prescott, Toma Bădescu   +7 more
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THE KMOS^3DSURVEY: DESIGN, FIRST RESULTS, AND THE EVOLUTION OF GALAXY KINEMATICS FROM 0.7 ⩽z⩽ 2.7 [PDF]

The Astrophysical Journal, 2015
Comment: 20 pages, 11 figures, 1 Appendix; Accepted to ApJ November ...
Emily Wisnioski, N. M. Förster Schreiber, Stijn Wuyts, Eva Wuyts, K. Bandara, David J. Wilman, R. Genzel, R. Bender, R. Davies, Matteo Fossati, P. Lang, J. Trevor Mendel, A. Beifiori, Gabriel Brammer, J. Chan, Maximilian Fabricius, Yoshinobu Fudamoto, S. Kulkarni, J. Kurk, D. Lutz, Erica J. Nelson, Ivelina Momcheva, D. J. Rosario, R. P. Saglia, S. Seitz, L. J. Tacconi, Pieter van Dokkum   +26 more
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A New Einstein Cross: A Highly Magnified, Intrinsically Faint Lyα Emitter at z  = 2.7 [PDF]

The Astrophysical Journal, 2006
We report the discovery of a new Einstein cross at redshift z_S = 2.701 based on Lyman-alpha emission in a cruciform configuration around an SDSS luminous red galaxy (z_L = 0.331). The system was targeted as a possible lens based on an anomalous emission line in the SDSS spectrum. Imaging and spectroscopy from the W. M.
Adam S. Bolton, Leonidas A. Moustakas, Daniel Stern, Scott Burles, Arjun Dey, Hyron Spinrad   +5 more
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Detecting Feedback Vertex Sets of Size k in O ^⋆ (2.7 k ) Time [PDF]

ACM Transactions on Algorithms, 2022
In the Feedback Vertex Set (FVS) problem, one is given an undirected graph G and an integer k , and one needs to determine whether there exists a set of k vertices that intersects all cycles of G (a so-called feedback vertex set).
Jason Li, Jesper Nederlof
openalex   +11 more sources

VDES J2325−5229 az= 2.7 gravitationally lensed quasar discovered using morphology-independent supervised machine learning [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
We present the discovery and preliminary characterization of a gravitationally lensed quasar with a source redshift $z_{s}=2.74$ and image separation of $2.9"$ lensed by a foreground $z_{l}=0.40$ elliptical galaxy. Since the images of gravitationally lensed quasars are the superposition of multiple point sources and a foreground lensing galaxy, we have
Fernanda Ostrovski, R. G. McMahon, Andrew J. Connolly, Cameron Lemon, Matthew W. Auger, M. Banerji, Johnathan Hung, S. E. Koposov, C. Lidman, Sophie L. Reed, S. Allam, A. Benoit-Lévy, E. Bertin, D. Brooks, E. Buckley‐Geer, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, Carlos E. Cunha, L. da Costa, S. Desai, H. T. Diehl, J. P. Dietrich, A. E. Evrard, D. A. Finley, Brenna Flaugher, P. Fosalba, Josh Frieman, D. W. Gerdes, D. A. Goldstein, D. Gruen, R. A. Gruendl, G. Gutiérrez, K. Honscheid, D. J. James, K. Kuehn, N. Kuropatkin, M. Lima, H. Lin, M. A. G. Maia, J. L. Marshall, Paul Martini, P. Melchior, R. Miquel, R. L. C. Ogando, A. A. Plazas, K. Reil, Kathy Romer, E. Sánchez, B. X. Santiago, Vic Scarpine, I. Sevilla-Noarbe, M. Soares-Santos, F. Sobreira, E. Suchyta, G. Tarlé, D. Thomas, D. L. Tucker, A. R. Walker   +58 more
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Intrinsic Properties of the 〈z〉 = 2.7 Lyα Forest from Keck Spectra of Quasar HS 1946+7658 [PDF]

The Astrophysical Journal, 1997
We present the highest quality Ly? forest spectra published to date. We have complete 7.9 km s-1 FWHM spectra between the Ly? and Ly? emission lines of the bright, high-redshift (V = 15.9, z = 3.05) QSO HS 1946+7658. The mean redshift of observed Ly? forest clouds is z = 2.7.
David Kirkman, David Tytler
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The Overdense Environment of a Large Lyα Nebula at z ≈ 2.7 [PDF]

The Astrophysical Journal, 2008
Large nebulae ( 50 kpc) emitting strongly in Ly? (also known as Ly? blobs) are likely signposts of ongoing massive galaxy formation. The relative rarity of these sources and their discovery in well-studied galaxy overdensities suggest that they may be associated with regions of high galaxy density. One of the largest Ly?
Moire K. M. Prescott, Nobunari Kashikawa, Arjun Dey, Yuichi Matsuda   +3 more
openalex   +3 more sources