Results 41 to 50 of about 3,913,690 (210)

Resolving stellar populations with integral field spectroscopy

Astronomische Nachrichten, Volume 340, Issue 9-10, Page 989-995, November‐December 2019., 2019
Abstract High‐performance instruments at large ground‐based telescopes have made integral field spectroscopy (IFS) a powerful tool for the study of extended objects such as galaxies, nebulae, or even larger survey fields on the sky. Here, we discuss the capabilities of IFS for the study of resolved stellar populations, using the new method of point ...
Martin M. Roth, Peter M. Weilbacher, Norberto Castro   +2 more
wiley   +1 more source

Critical Metallicity of Cool Supergiant Formation. II. Physical Origin

The Astrophysical Journal
This study investigates the physical origin of the critical metallicity required for the formation of cool supergiants, as revealed by stellar evolution models.
Po-Sheng Ou, Ke-Jung Chen
doaj   +1 more source

Trans‐Crustal Geophysical Responses Beneath the Supergiant Timmins‐Porcupine Orogenic Gold Camp, Canada

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 3, March 2025.
Abstract A new 80‐site magnetotelluric (MT) survey, integrated with reprocessed seismic reflection profiles, across the supergiant Timmins‐Porcupine gold camp of the Abitibi greenstone belt (AGB) was conducted to investigate the architecture of crustal‐scale structures.
A. Q. Adetunji, I. J. Ferguson, J. M. Simmons, C. Ma, S. Cheraghi, D. B. Snyder, J. A. Ayer   +6 more
wiley   +1 more source

The Early Cambrian Mianyang‐Changning Intracratonic Sag and Its Control on Petroleum Accumulation in the Sichuan Basin, China

Geofluids, Volume 2017, Issue 1, 2017., 2017
The older and deeper hydrocarbon accumulations receive increasing attention across the world, providing more technical and commercial challenges to hydrocarbon exploration. We present a study of an asymmetrical, N‐S striking intracratonic sag which developed across the Sichuan basin, south China, from Late Ediacaran to Early Cambrian times.
Shugen Liu, Bin Deng, Luba Jansa, Yong Zhong, Wei Sun, Jinmin Song, Guozhi Wang, Juan Wu, Zhiwu Li, Yanhong Tian, Xiaorong Luo   +10 more
wiley   +1 more source

Modeling of Granulation in Red Supergiants in the Magellanic Clouds with the Gaussian Process Regressions

The Astrophysical Journal
The granulation of red supergiants (RSGs) in the Magellanic Clouds is systematically investigated by combining the latest RSG samples and light curves from the Optical Gravitational Lensing Experiment and the All-Sky Automated Survey for Supernovae.
Zehao Zhang, Yi Ren, Biwei Jiang, Igor Soszyński, Tharindu Jayasinghe   +4 more
doaj   +1 more source

Red supergiant stars in blue compact dwarf galaxies: The case of Tol 0610-387

, 2001
We have investigated the stellar content of the blue compact dwarf galaxies (BCDG) Tol 0610-387 by combining near infrared and optical images, complemented by spectroscopic data.
Doublier, V., D. Kunth, Caulet, A., Kunth, D., J. M. Mas-Hesse, A. Caulet, Mas-Hesse, J. M., V. Doublier   +7 more
core   +1 more source

XMM‐Newton Observations of the Peculiar Be X‐Ray Binary A0538‐66

Astronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT A0538‐66 is a neutron star/Be x‐ray binary located in the Large Magellanic Cloud and, since its discovery in the 70s, it showed a peculiar behavior that makes it a unique object in the high‐mass x‐ray binaries scene: the extremely eccentric orbit (e=0.72$$ e=0.72 $$), the short spin period of the neutron star (P=69$$ P=69 $$ ms), the episodes ...
Michela Rigoselli, Caterina Tresoldi, Lorenzo Ducci, Sandro Mereghetti   +3 more
wiley   +1 more source

The Observer’s Guide to the Gamma‐Ray Burst Supernova Connection

Advances in Astronomy, Volume 2017, Issue 1, 2017., 2017
We present a detailed report of the connection between long‐duration gamma‐ray bursts (GRBs) and their accompanying supernovae (SNe). The discussion presented here places emphasis on how observations, and the modelling of observations, have constrained what we know about GRB‐SNe.
Zach Cano, Shan-Qin Wang, Zi-Gao Dai, Xue-Feng Wu, Josep M. Trigo-Rodríguez   +4 more
wiley   +1 more source

Visual Orbits of Wolf–Rayet Stars. II. The Orbit of the Nitrogen-rich Wolf–Rayet Binary WR 138 Measured with the CHARA Array

The Astrophysical Journal
Classical Wolf–Rayet (WR) stars are descendants of massive OB-type stars that have lost their hydrogen-rich envelopes and are in the final stages of stellar evolution, possibly exploding as Type Ib/c supernovae.
Amanda Holdsworth, Noel Richardson, Gail H. Schaefer, Jan J. Eldridge, Grant M. Hill, Becca Spejcher, Jonathan Mackey, Anthony F. J. Moffat, Felipe Navarete, John D. Monnier, Stefan Kraus, Jean-Baptiste Le Bouquin, Narsireddy Anugu, Sorabh Chhabra, Isabelle Codron, Jacob Ennis, Tyler Gardner, Mayra Gutierrez, Noura Ibrahim, Aaron Labdon, Cyprien Lanthermann, Benjamin R. Setterholm   +21 more
doaj   +1 more source

Red and Yellow Hypergiants

Galaxies
The red and yellow hypergiants are a rare and important phase in the evolution of the most massive stars that can reach the cool part of the HR Diagram.
Terry Jones
doaj   +1 more source