Results 101 to 110 of about 266,062 (301)

The Lyman Continuum Escape Fraction of Emission Line-selected z ∼ 2.5 Galaxies Is Less Than 15% [PDF]

, 2017
Recent work suggests that strong emission line, star-forming galaxies (SFGs) may be significant Lyman continuum leakers. We combine archival Hubble Space Telescope broadband ultraviolet and optical imaging (F275W and F606W, respectively) with emission ...
M. Rutkowski, C. Scarlata, A. Henry, M. Hayes, V. Mehta, N. Hathi, S. Cohen, R. Windhorst, A. Koekemoer, H. Teplitz, F. Haardt, B. Siana   +11 more
semanticscholar   +1 more source

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, EarlyView.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

Spatially Resolved Near-Infrared Spectroscopy of Seyfert 2 Galaxies Mk 1066, NGC 2110, NGC 4388, and Mk 3

, 2001
We present near-infrared spectra with resolutions of lambda/dlambda~1200 in the emission lines of Pa-beta, [FeII] (1.2567um), Br-gamma, and H2 v=1-0S(1) of the nuclei and circumnuclear regions of the four Seyfert 2 galaxies Mk 1066, NGC 2110, NGC 4388 ...
B. T. Soifer, Colina L., Hanson C. G., Hummel E., K. Matthews, Kukula M. J., L. Armus, Matt G., Moorwood A. F. M., Moorwood A. F. M., Moorwood A. F. M., Oliva E., Petitjean P., R. A. Knop, Shields J. C., Simpson C., T. W. Murphy   +16 more
core   +1 more source

THE NATURE OF EXTREME EMISSION LINE GALAXIES AT z = 1–2: KINEMATICS AND METALLICITIES FROM NEAR-INFRARED SPECTROSCOPY [PDF]

, 2014
We present near-infrared spectroscopy of a sample of 22 Extreme Emission Line Galaxies at redshifts 1.3 < z < 2.3, confirming that these are low-mass (M⋆ = 108–109 M☉) galaxies undergoing intense starburst episodes (M⋆/SFR ∼ 10–100 Myr).
M. Maseda, A. van der Wel, H. Rix, E. da Cunha, C. Pacifici, I. Momcheva, G. Brammer, S. Meidt, M. Franx, P. V. van Dokkum, M. Fumagalli, E. Bell, H. Ferguson, N. Förster-Schreiber, A. Koekemoer, D. Koo, B. Lundgren, D. Marchesini, E. Nelson, S. Patel, R. Skelton, A. Straughn, J. Trump, K. Whitaker   +23 more
semanticscholar   +1 more source

Extended Emission Lines in Radio Galaxies [PDF]

Symposium - International Astronomical Union, 1982
In whatever physical state the gas is found, observations of the interstellar medium in elliptical galaxies are of considerable interest. This is particularly true in the case of radio galaxies where we believe that the gas is an indespensable part of the cause of nuclear activity and plays a role in the origin and the evolution of the radio galaxy ...
openaire   +1 more source

Gone with the heat: a fundamental constraint on the imaging of dust and molecular gas in the early Universe [PDF]

Royal Society Open Science, 2016
Images of dust continuum and carbon monoxide (CO) line emission are powerful tools for deducing structural characteristics of galaxies, such as disc sizes, H2 gas velocity fields and enclosed H2 and dynamical masses. We report on a fundamental constraint
Zhi-Yu Zhang, Padelis P. Papadopoulos, R. J. Ivison, Maud Galametz, M. W. L. Smith, Emmanuel M. Xilouris   +5 more
doaj   +1 more source

Synthetic nebular emission from massive galaxies - I: origin of the cosmic evolution of optical emission-line ratios [PDF]

, 2017
Galaxies occupy different regions of the [OIII]$\lambda5007$/H$\beta$-versus-[NII]$\lambda6584$/H$\alpha$ emission-line ratio diagram in the distant and local Universe.
M. Hirschmann, S. Charlot, A. Feltre, T. Naab, E. Choi, J. Ostriker, R. Somerville   +6 more
semanticscholar   +1 more source

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

Journal of Field Robotics, EarlyView.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source

On the Nature of the Strong Emission-Line Galaxies in Cluster Cl 0024+1654: Are Some the Progenitors of Low Mass Spheroidals? [PDF]

, 1997
We present new size, line ratio, and velocity width measurements for six strong emission-line galaxies in the galaxy cluster, Cl 0024+1654, at redshift z~0.4.
Babul A., Binggeli B., David C. Koo, Gregory D. Wirth, Jesús Gallego, Rafael Guzmán, Skillman E. D.   +6 more
core   +3 more sources

Extreme emission-line galaxies out to z$\sim$1 in zCOSMOS. I. Sample and characterization of global properties [PDF]

, 2014
We present a thorough characterization of a large sample of 183 extreme emission-line galaxies (EELGs) at redshift 0 ...
R. Amor'in, E. P'erez-Montero, T. Contini, J. M. V'ilchez, M. Bolzonella, L. Tasca, F. Lamareille, G. Zamorani, C. Maier, C. Carollo, J. Kneib, O. Fèvre, S. Lilly, V. Mainieri, A. Renzini, M. Scodeggio, S. Bardelli, A. Bongiorno, K. Caputi, O. Cucciati, S. D. Torre, L. Ravel, P. Franzetti, B. Garilli, A. Iovino, P. Kampczyk, C. Knobel, K. Kovavc, J. L. Borgne, V. L. B. M. Mignoli, R. Pelló, Y. Peng, V. Presotto, E. Ricciardelli, J. Silverman, M. Tanaka, L. Tresse, D. Vergani, E. Zucca   +38 more
semanticscholar   +1 more source