Results 171 to 180 of about 675,630 (383)

Exploring Possible Relations Between Optical Variability Time Scales and Broad Emission Line Shapes in AGN

Frontiers in Astronomy and Space Sciences, 2018
Here we investigate the connection of broad emission line shapes and continuum light curve variability time scales of type-1 Active Galactic Nuclei (AGN).
Edi Bon, Predrag Jovanović, Paola Marziani, Nataša Bon, Aleksandar Otašević   +4 more
doaj   +1 more source

Local Analogs for High-redshift Galaxies: Resembling the Physical Conditions of the Interstellar Medium in High-redshift Galaxies

, 2016
We present a sample of local analogs for high-redshift galaxies selected in the Sloan Digital Sky Survey (SDSS). The physical conditions of the interstellar medium (ISM) in these local analogs resemble those in high-redshift galaxies.
Bian, Fuyan, Dopita, Michael, Juneau, Stephanie, Kewley, Lisa   +3 more
core   +1 more source

The Numbers of Early-Type Stars in the Galaxy and Their Relation to Galactic Clusters and Associations [PDF]

, 1957
Morton S. Roberts
openalex   +1 more source

Random discrete probability measures based on a negative binomial process

Canadian Journal of Statistics, EarlyView.
Abstract A distinctive functional of the Poisson point process is the negative binomial process for which the increments are not independent but are independent conditional on an underlying gamma variable. Using a new point process representation for the negative binomial process, we generalize the Poisson–Kingman distribution and its corresponding ...
Sadegh Chegini, Mahmoud Zarepour
wiley   +1 more source

Galaxy Morphology

, 2013
Galaxy morphology is a product of how galaxies formed, how they interacted with their environment, how they were influenced by internal perturbations, AGN, and dark matter, and of their varied star formation histories. This article reviews the phenomenology of galaxy morphology and classification with a view to delineating as many types as possible and
openaire   +4 more sources

UV–Vis Spectra of Carbonic Acid: Rationalizing Experimental Redshifts between Monomer and Bulk based on (H2CO3)n Calculations

ChemPhysChem, EarlyView.
In bulk carbonic acid (e.g., in interstellar icy dust grains) cluster formation produces two distinct UV‐Vis spectral features redshifted by ≈2 eV (25 nm) and by ≈5 eV (80 nm) compared to gas phase single molecule carbonic acid 's adiabatic ionization energy. Theory and experiment were used to investigate the origin of these shifts.
Dennis F. Dinu, Bastian Klein, Chaojiang Zhang, Radu A. Talmazan, Thomas Loerting, Hinrich Grothe, Ralf I. Kaiser, Maren Podewitz   +7 more
wiley   +1 more source

Dust at the Cosmic Dawn

Galaxies
Observations provided by the Hubble Space Telescope (HST) and James Webb Space Telescope (JWST) have revealed a surprising abundance of galaxies at the “cosmic dawn” epoch, z>7. Some of them are found even in a more distant universe at z ≃ 14–16. Most of
Yuri A. Shchekinov, Biman B. Nath
doaj   +1 more source

Radio continuum and far-infrared emission from the galaxies in the Eridanus group

, 2005
The Eridanus galaxies follow the well-known radio-FIR correlation. Majority (70%) of these galaxies have their star formation rates below that of the Milky Way.
A. Omar, A. Omar, C. A. Heisler, C. N. A. Willmer, D. B. Sanders, G. Gavazzi, G. Helou, G. Neugebauer, H. Roussel, J. J. Condon, J. J. Condon, J. J. Condon, J. J. Condon, K. S. Dwarakanath, M. A. W. Verheijen, M. Harwit, M. S. Yun, M. Scodeggio, N. A. Reddy, N. Miller, P. C. Kruit van der, R. C. Kennicutt, S. Hameed, S. Veilleux, T. Elfhag, T. K. Menon   +25 more
core   +2 more sources

From Fabrication to Failure—Aqueous Processing, Electrolyte Tuning, and Degradation Mechanism Elucidation in Poly(3‐Vinyl‐N‐Methylphenoxazine) Positive Electrodes

ChemSusChem, EarlyView.
Organic electrode materials are considered the next generation of battery electrode materials due to their environmental friendliness, low toxicity and competitive specific capacities. Herein, we report on a systematic study of processing of the redox polymer poly(3‐vinyl‐N‐methylphenoxazine) (PVMPO) using water processable binders, achieving ...
Sathiya Priya Panjalingam, Somayeh Ahadi, Markus Börner, Birgit Esser, Martin Winter, Peter Bieker   +5 more
wiley   +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