Results 11 to 20 of about 421,349 (234)

Retracted: Can the chemical industry solve the climate change?On the role of human energy production, renewable energies, and the potential of chemistry as a solution provider

open access: yesChemie Ingenieur Technik, EarlyView., 2023
Let us consider an alternative perspective on climate change: The sum of solar radiation and heat generated by human activity result in a net energy input of 1.96 times that of the Sun on the Earth's surface. The expanding global population is expected to exacerbate this issue. Potential solutions are proposed, including replacement and heat recycling.
Martin Bertau, Gerald Steiner
wiley   +1 more source

SDSS-IV MaNGA: global stellar population and gradients for about 2000 early-type and spiral galaxies on the mass-size plane [PDF]

open access: yes, 2018
We perform full spectrum fitting stellar population analysis and Jeans Anisotropic modelling (JAM) of the stellar kinematics for about 2000 early-type galaxies (ETGs) and spiral galaxies from the MaNGA DR14 sample.
Hongyu Li   +18 more
semanticscholar   +1 more source

The Structural Properties of Isolated Galaxies, Spiral-Spiral Pairs, and Mergers: The Robustness of Galaxy Morphology during Secular Evolution [PDF]

open access: yes, 2004
We present a structural analysis of nearby galaxies in spiral-spiral pairs in optical BVRI bands and compare them with the structures of isolated spiral galaxies and galaxies in ongoing mergers.
H. Hernández-Toledo   +3 more
semanticscholar   +1 more source

Updating the (Supermassive Black Hole Mass) - (Spiral Arm Pitch Angle) Relation: A Strong Correlation for Galaxies with Pseudobulges [PDF]

open access: yes, 2017
We have conducted an image analysis of the (current) full sample of 44 spiral galaxies with directly measured supermassive black hole (SMBH) masses, $M_{\rm BH}$, to determine each galaxy's logarithmic spiral arm pitch angle, $\phi$. For predicting black
Benjamin Lee Davis, A. Graham, M. Seigar
semanticscholar   +1 more source

SDSS-IV MaNGA: Variation of the Stellar Initial Mass Function in Spiral and Early-type Galaxies [PDF]

open access: yes, 2017
We perform Jeans anisotropic modeling (JAM) on elliptical and spiral galaxies from the MaNGA DR13 sample. By comparing the stellar mass-to-light ratios estimated from stellar population synthesis and from JAM, we find a systematic variation of the ...
Hongyu Li   +17 more
semanticscholar   +1 more source

Kinematically lopsided spiral galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1999
6 pages, accepted for ...
Swaters, RA   +3 more
openaire   +3 more sources

The Circum-Galactic Medium of Massive Spirals. II. Probing the Nature of Hot Gaseous Halo around the Most Massive Isolated Spiral Galaxies [PDF]

open access: yes, 2017
We present the analysis of the XMM-Newton data of the Circum-Galactic Medium of MASsive Spirals (CGM-MASS) sample of six extremely massive spiral galaxies in the local universe.
Jiangtao Li   +5 more
semanticscholar   +1 more source

Galaxy Zoo: passive red spirals [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2010
MNRAS in press, 20 pages, 15 figures (v3)
Masters, Karen   +16 more
openaire   +6 more sources

MEGAMASER DISKS REVEAL A BROAD DISTRIBUTION OF BLACK HOLE MASS IN SPIRAL GALAXIES [PDF]

open access: yes, 2016
We use new precision measurements of black hole (BH) masses from water megamaser disks to investigate scaling relations between macroscopic galaxy properties and supermassive BH mass.
J. Greene   +10 more
semanticscholar   +1 more source

Shape of the oxygen abundance profiles in CALIFA face-on spiral galaxies [PDF]

open access: yes, 2016
We measured the gas abundance profiles in a sample of 122 face-on spiral galaxies observed by the CALIFA survey and included all spaxels whose line emission was consistent with star formation.
L. Sánchez-Menguiano   +33 more
semanticscholar   +1 more source

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