Results 11 to 20 of about 1,846,404 (321)
(Sub)mm-Wavelength Observations of Pre-Planetary Nebulae and Young Planetary Nebulae
Galaxies, 2020 This is a non-comprehensive review of observations of pre-Planetary Nebulae (pPNe) and young Planetary Nebulae (yPNe) at (sub)mm-wavelengths, a valuable window for probing multi-phased gas and dust in these objects.
Carmen Sánchez Contreras
doaj +1 more source
Effect of Spruce Wood Density on Selected Fire-Technical Parameters during Thermal Loading
Applied Sciences, 2023 The paper evaluates the effect of spruce wood density on the parameters of mass loss and mass loss rate during exposure to thermal load. The intention was to determine whether the effect of density is still evident after the application of flame ...
Patrik Mitrenga +2 more
doaj +1 more source
Proceedings of the International Astronomical Union, 2011 AbstractMass loss on the AGB removes most of the envelope and leaves a compact remnant to become a white dwarf and perhaps first the central star of a planetary nebula. The envelope mass provides an upper limit on the material available to form the PN, and the terminal mass loss rate plus the small remnant mass left on the core determines how much of ...
Lee A. Willson, Qian Wang
openaire +1 more source
Multi-method (XRF, FTIR, TGA) analysis of ancient bricks from Karabalgasun : A preliminary study
Proceedings of the Mongolian Academy of Sciences, 2020 Ancient ceramic artefacts attracted the attention of scientists as being a chronological indicator within the archaeological context; however, they can also provide information about the tech-nology and provenance.
Saran Solongo +4 more
doaj +1 more source
Partitioning Recent Greenland Mass Loss [PDF]
Science, 2009 GRACE and Movement Together Recent measurements of the rate of mass loss from the Greenland ice sheet vary approximately by a factor of three. Resolving these discrepancies is essential for determining the current mass balance of the ice sheet and to project sea level rise in the future. Van den Broeke
van den Broeke, Michiel +8 more
openaire +5 more sources
ALMA’s Acute View of pPNe: Through the Magnifying Glass... and What We Found There
Galaxies, 2018 We present recent Atacama Large Millimeter/submillimeter Array (ALMA)-based studies of circumstellar envelopes (CSEs) around Asymptotic Giant Branch (AGB) stars and pre-Planetary Nebulae (pPNe).
Carmen Sánchez Contreras +3 more
doaj +1 more source
Mass Loss from Eta Carinae [PDF]
Symposium - International Astronomical Union, 1979 This high luminosity (5 × 106 L⊙) star since 1840 is losing mass at the rate of 7.5 × 10−2 M⊙ per year. The large mass loss could be the result of vibrational instabilities produced in the CNO hydrogen burning phase of a very massive (160 M⊙) star. The presence of high excitation lines in the ultraviolet spectrum of Eta Car suggests the idea of a hot ...
C. D. Andriesse, R. Viotti
openaire +1 more source
Applied Sciences, 2022 The paper assessed the impact of the heat treatment of spruce wood, the (radial and tangential) side of the specimens exposed to fire, and the type of material (prism—higher density, floor—lower density) on the combustion process and the rate of fire ...
Patrik Mitrenga +3 more
doaj +1 more source
Increasing mass loss from Greenland's Mittivakkat Gletscher [PDF]
The Cryosphere, 2011 Warming in the Arctic during the past several decades has caused glaciers to thin and retreat, and recent mass loss from the Greenland Ice Sheet is well documented.
S. H. Mernild +6 more
doaj +1 more source
Mass Loss from Cool Stars [PDF]
Annual Review of Astronomy and Astrophysics, 1981 AbstractRecently obtained spectroscopic observations indicating mass loss in cool stars are reviewed with analogies to the solar atmosphere. Spectral diagnostics of mass loss are discussed with new theoretical calculations of chromospheric line profiles.
openaire +1 more source