Results 151 to 160 of about 266,062 (301)

6C radio galaxies at z~1: The influence of radio power on the alignment effect

, 2003
Powerful radio galaxies often display enhanced optical/UV continuum emission and extended emission line regions, elongated and aligned with the radio jet axis.
Baum, Best, Best, Best, Chambers, Cimatti, Inskip, Inskip, Katherine J. Inskip, Malcolm S. Longair, Osterbrock, Philip N. Best   +11 more
core   +1 more source

Spectrophotometry of three emission-line galaxies.

The Astrophysical Journal, 1973
Spectrophotometric data concerning three blue emission-line galaxies were obtained from image-tube spectrograms secured with the 84-inch reflector of the Kitt Peak National Observatory. Analysis of these data indicated a level of excitation similar to that of low- or moderate-excitation galactic H II regions.
openaire   +1 more source

Probing cosmic voids with emission-line galaxies

Frontiers in Astronomy and Space Sciences
IntroductionWe aim to provide forecasts for future line intensity mapping (LIM) observations and galaxy redshift surveys, focusing on the physical properties of low-density region of the cosmic web (voids).
Yuka Yamada, Naoki Yoshida, Naoki Yoshida   +2 more
doaj   +1 more source

A Catalog of Broad Hα and Hβ Active Galactic Nuclei in MaNGA

The Astrophysical Journal
Broad H α and H β emission lines (FWHM > 1000 km s ^−1 ) are incredibly efficient tracers of the high-velocity clouds encircling active galactic nuclei (AGNs).
James Negus, Julia M. Comerford, Francisco Müller Sánchez   +2 more
doaj   +1 more source

Near-infrared spectroscopy of a large sample of low-metallicity blue compact dwarf galaxies

, 2015
We present near-infrared (NIR) spectroscopic observations in the wavelength range 0.90-2.40mum of eighteen low-metallicity blue compact dwarf (BCD) galaxies and six HII regions in spiral and interacting galaxies.
Izotov, Y. I., Thuan, T. X.
core   +1 more source

Hα emission line morphologies in Markarian starburst galaxies

Journal of Astrophysics and Astronomy, 2001
We present broad band R and narrow band H alpha emission line images of a sample of optically selected starburst galaxies from the Markarian lists. The emission line morphology is studied and global properties like luminosities, equivalent widths and star formation rates are derived.
Chitre, A, Joshi, UC
openaire   +2 more sources

Chandra Detects Low-luminosity Active Galactic Nucleus with MBH = 104–106 M⊙ in Nearby (z < 0.5) Dwarf and Star-forming Galaxies

The Astrophysical Journal
We searched the Chandra and XMM archives for 900 Green Pea galaxies to identify signs of active galactic nuclei (AGN). Green peas are low-mass, emission-line galaxies that resemble high-redshift dwarf galaxies. From 29 observations, we detected X-rays in
Mainak Singha, Julissa Sarmiento, Sangeeta Malhotra, James E. Rhoads, L. Y. Aaron Yung, Junxian Wang, Zhen-Ya Zheng, Ruqiu Lin, Keunho Kim, Jialai Kang, Santosh Harish   +10 more
doaj   +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

SMILES Data Release. II. Probing Galaxy Evolution during Cosmic Noon and Beyond with NIRSpec Medium-resolution Spectra

The Astrophysical Journal
We present the second data release of the Systematic Mid-Infrared Instrument Legacy Extragalactic Survey (SMILES), focusing on JWST/NIRSpec medium-resolution spectroscopy of galaxies across cosmic time. This release includes spectroscopic observations of
Yongda Zhu, Nina Bonaventura, Yang Sun, George H. Rieke, Stacey Alberts, Jianwei Lyu, Irene Shivaei, Jane Morrison, Zhiyuan Ji, Eiichi Egami, Jakob M. Helton, Marcia J. Rieke, Pierluigi Rinaldi, Fengwu Sun, Christopher N. A. Willmer   +14 more
doaj   +1 more source

Discovery of a Very Bright and Intrinsically Very Luminous, Strongly Lensed Lyα Emitting Galaxy at z = 2.82 in the BOSS Emission-Line Lens Survey* [PDF]

, 2017
R. Marques-Chaves, I. Pérez‐Fournon, Y. Shu, P. Martínez-Navajas, A. Bolton, C. S. Kochanek, Masamune Oguri, Zheng Zheng, Shude Mao, Antonio D. Montero-Dorta, Matthew Cornachione, Joel R. Brownstein   +11 more
openalex   +1 more source