Results 61 to 70 of about 252,176 (198)

A New Constraint on the Ly$\alpha$ Fraction of UV Very Bright Galaxies at Redshift 7

, 2016
We study the extent to which very bright (-23.0 < MUV < -21.75) Lyman-break selected galaxies at redshifts z~7 display detectable Lya emission. To explore this issue, we have obtained follow-up optical spectroscopy of 9 z~7 galaxies from a parent sample ...
Dunlop, James S., Fevre, Olivier Le, Furusawa, Hisanori, Furusawa, Junko, Fynbo, Johan P. U., Kajisawa, Masaru, Kashikawa, Nobunari, Kobayashi, Masakazu A. R., Naito, Yoshiaki, Nakata, Fumiaki, Okura, Yuki, Ouchi, Masami, Sekiguchi, Kazuhiro, Shimasaku, Kazuhiro, Takata, Tadafumi, Taniguchi, Yoshiaki, Yamada, Toru, Yasuda, Naoki   +17 more
core   +4 more sources

The Importance of Star Formation Intensity in Lyα Escape from Green Pea Galaxies and Lyman Break Galaxy Analogs [PDF]

Astrophysical Journal, 2020
We have studied ultraviolet images of 40 Green Pea galaxies and 15 local Lyman Break Galaxy Analogs to understand the relation between Lyα photon escape and central UV photometric properties. We measured star-formation intensity (SFI; star formation rate
Keunho J. Kim, S. Malhotra, J. Rhoads, N. Butler, Huan Yang   +4 more
semanticscholar   +1 more source

The Magellan M2FS Spectroscopic Survey of High-redshift Galaxies: A Sample of 260 Lyα Emitters at Redshift z ≈ 5.7 [PDF]

Astrophysical Journal, 2020
We present a spectroscopic survey of Lyα emitters (LAEs) at z ≈ 5.7 using the multiobject spectrograph M2FS on the Magellan Clay telescope. This is part of a high-redshift galaxy survey carried out in several well-studied deep fields.
Y. Ning, Linhua Jiang, Zhen-ya Zheng, Jin Wu, F. Bian, E. Egami, Xiaohui Fan, L. Ho, Yue Shen, Ran Wang, Xue-bing Wu   +10 more
semanticscholar   +1 more source

Properties of Ly-alpha emitters around the radio galaxy MRC 0316-257

, 2005
Observations of the radio galaxy MRC 0316-257 at z=3.13 and the surrounding field are presented. Using narrow- and broad-band imaging obtained with the VLT, 77 candidate Ly-alpha emitters with a rest-frame equivalent width of > 15 A were selected in a ~7'
Adelberger, Aguirre, Ajiki, Appenzeller, Archibald, Athreya, B. P. Venemans, Baldwin, Baugh, Beers, Bennert, Bertin, Bessell, Best, Best, Blakeslee, Blakeslee, Brocklehurst, Bunker, C. De Breuck, C. L. Carilli, Carilli, Chambers, Ciardullo, Cowie, Dawson, De Breuck, De Breuck, De Breuck, De Breuck, De Breuck, Della Ceca, Deutsch, Dey, Ferguson, Fouqué, Friaça, Fruchter, Fynbo, Fynbo, G. K. Miley, Giavalisco, Giavalisco, H. Ford, H. J. A. Röttgering, Hashimoto, Heckman, Hill, Hu, Hu, Hunt, J. D. Kurk, Jarvis, Keel, Keel, Kudritzki, Kurk, L. Pentericci, Lahav, Landolt, Large, Le Fèvre, Leitherer, Lia, Madau, Madau, Maier, Malhotra, Maughan, Maughan, McCarthy, Monet, Moorwood, Mushotzky, Oke, P. McCarthy, Papadopoulos, Pascarelle, Pentericci, Pentericci, Pentericci, Pentericci, Pettini, Press, R. A. Overzier, Reuland, Rhoads, Rosati, Rosati, Röttgering, Schlegel, Shapley, Shapley, Shimasaku, Spergel, Stanford, Steidel, Steidel, Steidel, Steidel, Steidel, Stevens, Stone, T. Heckman, Tapken, Thommes, Toft, Tozzi, Venemans, Venemans, Venemans, Vernet, W. J. M. van Breugel, White, Willott, Zirm   +115 more
core   +1 more source

A search for clusters at high redshift - III. Candidate H-alpha emitters and EROs in the PKS 1138-262 proto-cluster at z=2.16 [PDF]

, 2004
In this paper we present deep VLT multi wavelength imaging observations of the field around the radio galaxy PKS 1138-262 aimed at detecting and studying a (potential) proto-cluster centered at this radio source.
Abell, Bahcall, Bahcall, Beers, Bertin, Best, Bower, Bruzual, Buat, Bunker, Butcher, Carilli, Carilli, Cowie, Cowie, Daddi, Daddi, De Breuck, De Breuck, De Propris, Dey, Donahue, Dressler, Eggen, Eke, Elston, Elston, Feigelson, Fynbo, Fynbo, Fynbo, Gladders, Glazebrook, Hamuy, Hamuy, Hill, Hoeg, Hu, Iglesias-Páramo, Infante, Ivison, Jarvis, Kauffmann, Kauffmann, Kennicutt, Kennicutt, Kennicutt, Kron, Kurk, Kurk, Lacy, Lacy, Leitherer, Madau, McLure, Moorwood, Møller, Nakata, Oke, Ouchi, Pentericci, Pentericci, Pentericci, Pentericci, Pentericci, Pozzetti, Prentice, Refregier, Rhoads, Rhoads, Rosati, Rosati, Röttgering, Salpeter, Schlegel, Scodeggio, Small, Stanford, Stanford, Stanford, Steidel, Steidel, Stiavelli, Taylor, van Breugel, van der Werf, van Dokkum, van Dokkum, van Dokkum, Venemans, Yates   +90 more
core   +4 more sources

The Lyman Alpha Reference Sample. X. Predicting Lyα Output from Star-forming Galaxies Using Multivariate Regression [PDF]

Astrophysical Journal, 2020
Understanding the production and escape of Lyα radiation from star-forming galaxies is a long-standing problem in astrophysics. The ability to predict the Lyα luminosity of galaxies would open up new ways of exploring the epoch of reionization (EOR) and ...
A. Runnholm, M. Hayes, J. Melinder, E. Rivera-Thorsen, G. Östlin, J. Cannon, D. Kunth   +6 more
semanticscholar   +1 more source

Physical properties of z~4 LBGs: differences between galaxies with and without Ly-alpha emission

, 2007
We have analysed the physical properties of z~4 Lyman Break Galaxies observed in the GOODS-S survey, in order to investigate the possible differences between galaxies where the Ly-alpha is present in emission, and those where the line is absent or in ...
A. Fontana, A. Grazian, Bouwens, Bruzual, C. De Santis, Cowie, Dickinson, Dickinson, Drory, E. Giallongo, Fontana, Fontana, Fontana, Fujita, Gawiser, Giavalisco, Grazian, Grazian, Hansen, Iwata, Iye, Kashikawa, Keel, L. Pentericci, Lai, Le Fevre, Leitherer, Madau, Malhotra, Mori, Ouchi, Ouchi, P. Santini, Papovich, Rhoads, S. Gallozzi, S. Salimbeni, Shapley, Shapley, Steidel, Steidel, Steidel, Tapken, Thommes, Vanzella, Vanzella, Venemans, Venemans   +47 more
core   +1 more source

Detecting Early Galaxies Through Their 21-cm Signature [PDF]

, 2007
New observations over the next few years of the emission of distant objects will help unfold the chapter in cosmic history around the era of the first galaxies. These observations will use the neutral hydrogen emission or absorption at a wavelength of 21-
Barkana R., Hogan C. J., Kaiser N., Rennan Barkana, Smadar Naoz, Wouthuysen S. A.   +5 more
core   +2 more sources

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
doaj   +1 more source

Gas Accretion and Giant Lyman-alpha Nebulae

, 2016
Several decades of observations and discoveries have shown that high-redshift AGN and massive galaxies are often surrounded by giant Lyman-alpha nebulae extending in some cases up to 500 kpc in size.
A. Basu-Zych, A. Bunker, A. Dekel, A. Dey, A. Humphrey, A. Humphrey, A. Humphrey, A. Humphrey, B. P. Venemans, C. C. Steidel, C. C. Steidel, C. C. Steidel, C. C. Steidel, C. Leitherer, C. Scarlata, C.-A. Faucher-Giguère, D. C. Martin, D. C. Martin, D. E. Osterbrock, D. J. B. Smith, D. P. Schneider, E. Borisova, E. C. Herenz, E. Lusso, E. M. Hu, E. M. Hu, F. Arrigoni Battaia, F. Arrigoni Battaia, F. Courbin, F. Valentino, H. J. A. Röttgering, J. A. Kollmeier, J. Bergeron, J. Bergeron, J. D. Kurk, J. E. Geach, J. E. Geach, J. F. Hennawi, J. F. Hennawi, J. G. Baker, J. Rosdahl, J. W. Fried, J. X. Prochaska, K. K. Nilsson, L. Christensen, L. Pentericci, L. Wisotzki, M. A. Fardal, M. Beck, M. Dijkstra, M. Dijkstra, M. Fumagalli, M. Hayes, M. K. M. Prescott, M. K. M. Prescott, M. K. M. Prescott, M. K. M. Prescott, M. Reuland, M. Trebitsch, M. Villar-Martín, M. Villar-Martín, M. Weidinger, M. Weidinger, N. K. Hine, N. P. H. Nesvadba, N. P. H. Nesvadba, N. Roche, P. D. Barthel, P. J. Francis, P. J. Francis, P. J. McCarthy, P. J. McCarthy, P. J. McCarthy, P. J. McCarthy, P. L. North, P. Møller, P. Palunas, R. A. Overzier, R. Antonucci, R. Antonucci, R. F. Trainor, R. Ojik van, R. Ojik van, S. A. Eales, S. C. Chapman, S. C. Chapman, S. Cantalupo, S. Cantalupo, S. Cantalupo, S. Cantalupo, S. Cantalupo, S. Djorgovski, S. F. Sánchez, S. J. Lilly, S. R. Furlanetto, S. Veilleux, T. Goerdt, T. M. Heckman, T. Saito, W. C. Keel, Y. Ao, Y. Matsuda, Y. Matsuda, Y. Shen, Y. Taniguchi, Y. Ueda, Y. Yang, Y. Yang, Z. Haiman   +108 more
core   +1 more source