Results 21 to 30 of about 4,228,954 (215)

Lithium Detection in Red Supergiant Stars of the Perseus Complex

The Astrophysical Journal, 2022
Abstract We present the first systematic study of lithium abundance in a chemically homogeneous sample of 27 red supergiants (RSGs) in the young Perseus complex. For these stars, accurate stellar parameters and detailed chemical abundances of iron and iron peak, CNO, alpha, light, and neutron capture elements have already been obtained ...
C. Fanelli, L. Origlia, A. Mucciarelli, N. Sanna, E. Oliva, E. Dalessandro   +5 more
openaire   +3 more sources

The red supergiants & Wolf-Rayet stars of NGC 604 [PDF]

Monthly Notices of the Royal Astronomical Society, 2010
We study the post-main sequence stars in NGC 604, the most luminous HII region in M33. Previously, a number of Wolf-Rayet (WR) stars and one red supergiant (RSG) have been discovered. Based on broadband photometry of the region, we present evidence that is consistent with the presence of this RSG and with three more RSG candidates.
Eldridge, John J., Relano, Monica
openaire   +3 more sources

Impact of Giant Iceberg A68A on the Physical Conditions of the Surface South Atlantic, Derived Using Remote Sensing

Geophysical Research Letters, Volume 50, Issue 18, 28 September 2023., 2023
Abstract Giant icebergs release cold, fresh meltwater as they drift, perturbing the physical conditions of the surface ocean. This study uses satellite‐derived sea surface salinity and temperature measurements to explore the physical impact of supergiant iceberg A68A between September 2020 and June 2021.
R. M. Smith, G. R. Bigg
wiley   +1 more source

On the Explosion Geometry of Red Supergiant Stars [PDF]

Proceedings of the International Astronomical Union, 2015
AbstractWe present the observed “continuum” levels of polarization as a function of time for four well-observed Type II-Plateau supernovae (SNe II-P; Fig. 1), the class of SNe decisively determined to arise from red supergiant stars (Smartt 2009). All four objects show temporally increasing degrees of polarization through the end of the photospheric ...
Douglas C. Leonard, Luc Dessart, Giuliano Pignata, D. John Hillier, George G. Williams, Paul S. Smith, Harish Khandrika, Christopher Bilinski, Nhieu Duong, Kelsi Flatland, Luis Gonzalez, Jennifer L. Hoffman, Chuck Horst, Leah Huk, Peter Milne, Alisa A. Rachubo, Nathan Smith   +16 more
openaire   +1 more source

Giant breast phyllodes tumor with silent thromboembolism: A case report

Cancer Reports, Volume 6, Issue 9, September 2023., 2023
Abstract Background Phyllodes tumor (PT) is a solid fibroepithelial breast lesion with proliferation of stromal and epithelial elements, usually presents with a rapidly expanding feature. Venous thromboembolism (VTE) have been reported to increase the burden in terms of mortality and morbidity of malignant tumor, and associate with worsened survival ...
Qinbo Wang, Lina Wei, Yuan Zhou, Yingjuan Ou, Haiyan Li   +4 more
wiley   +1 more source

First Observations With a GNSS Antenna to Radio Telescope Interferometer

Radio Science, Volume 58, Issue 8, August 2023., 2023
Abstract We describe the design of a radio interferometer composed of a Global Navigation Satellite Systems (GNSS) antenna and a Very Long Baseline Interferometry radio telescope. Our eventual goal is to use this interferometer for geodetic applications including local tie measurements.
J. Skeens, J. York, L. Petrov, D. Munton, K. Herrity, R. Ji‐Cathriner, S. Bettadpur, T. Gaussiran   +7 more
wiley   +1 more source

Burial and Denudation Alter Microbial Life at the Bottom of the Hypo‐Critical Zone

Geochemistry, Geophysics, Geosystems, Volume 24, Issue 6, June 2023., 2023
Abstract How subsurface microbial life changed at the bottom of the kilometers‐deep (hypo) Critical Zone in response to evolving surface conditions over geologic time is an open question. This study investigates the burial and exhumation, biodegradation, and fluid circulation history of hydrocarbon reservoirs across the Colorado Plateau as a window ...
Jennifer McIntosh, Ji‐Hyun Kim, Lydia Bailey, Magdalena Osburn, Henrik Drake, Anna Martini, Peter Reiners, Bradley Stevenson, Grant Ferguson   +8 more
wiley   +1 more source

Characteristics and Consequences of Red Bed Bleaching by Hydrocarbon Migration: A Natural Example From the Entrada Sandstone, Southern Utah

Geochemistry, Geophysics, Geosystems, Volume 23, Issue 8, August 2022., 2022
Abstract Extensive regions of yellow and white (“bleached”) sandstones within the terrestrial Jurassic red bed deposits of the Colorado Plateau reflect widespread interaction with subsurface reduced fluids which resulted in the dissolution of iron‐oxide grain coatings.
Lydia R. Bailey, Henrik Drake, Martin J. Whitehouse, Peter W. Reiners   +3 more
wiley   +1 more source

Unravelling the pore network and its behaviour: An integrated NMR, MICP, XCT and petrographical study of continental spring carbonates from the Ballık area, SW Turkey

The Depositional Record, Volume 8, Issue 1, Page 292-316, February 2022., 2022
Applying an integrated methodology, including petrography, mercury injection capillary pressure (MICP), laboratory nuclear magnetic resonance (NMR) and X‐ray computed tomography (XCT), on continental spring carbonate reservoir analogue samples is a prerequisite to understanding plug scale porosity and permeability heterogeneities.
Jeroen Soete, Steven Claes, Hannes Claes, Marcelle M. Erthal, Helen Hamaekers, Eva De Boever, Anneleen Foubert, Norbert Klitzsch, Rudy Swennen   +8 more
wiley   +1 more source

New Candidate Massive Clusters from 2MASS [PDF]

, 2013
Massive stars are important for the evolution of the interstellar medium. The detailed study of their properties (such as mass loss, rotation, magnetic fields) is enormously facilitated by samples of these objects in young massive galactic star clusters.
Dirk Froebrich, Froebrich, Dirk
core   +1 more source