Results 51 to 60 of about 9,582 (206)

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

Red Supergiants—The Other Side of the H-R Diagram

Galaxies
Red supergiants are the largest stars known with some of the highest mass loss rates observed. They are the final stage in the evolution of the majority of massive stars.
Roberta M. Humphreys
doaj   +1 more source

The stellar content of the super star clusters in NGC 1569 [PDF]

, 2001
We discuss HST FOS ultraviolet spectroscopy and NICMOS near-infrared photometry of four young super star clusters in the central region of the irregular starburst galaxy NGC 1569. The new observations coupled with previous HST WFPC2 photometry and ground-
Alessandra Aloisi, Bica E., Buonanno R., Cervino M., Chiosi C., Claus Leitherer, Girardi L., Greve A., Israel F. P., Laura Greggio, Livia Origlia, Maeder A., Meynet G., Monica Tosi, Oliva E., Prada F., Sagar R., van den Bergh S.   +17 more
core   +2 more sources

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 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

THE ABUNDANCES OF HEAVY ELEMENTS IN RED SUPERGIANTS OF MAGELLANIC CLOUDS

Odessa Astronomical Publications, 2013
The spectra of Magellanic Clouds (MC) supergiants PMMR23, PMMR144 and RM 1-667 with resolving power R=30,000 and signal to noise ratio near 100 obtained at3.6 metertelescope in Chile were analysed. We present are port on the  detailed investigation of MC
V. Gopka, A Yushchenko, V. Kovtyukh, A. Shavrina, V. Yushchenko, S. Vasilyeva, Y. Pavlenko, S. Andrievsky   +7 more
doaj   +1 more source

SiO and H2O Maser Observations of Red Supergiants in Star Clusters Embedded in the Galactic Disk

, 2010
We present the result of radio observations of red supergiants in the star cluster, Stephenson's #2, and candidates for red supergiants in the star clusters, Mercer et al.
Chong, S. S. N., Deguchi, S., Koike, K., Kwok, S., Nakashima, J., Zhang, Y.   +5 more
core   +1 more source

Beyond Accretion Limits: The Rise of Pulsating Gems

Astronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT The discovery of several ultraluminous X‐ray sources exhibiting fast and rapidly evolving X‐ray pulsations unequivocally associates these sources with accreting neutron stars orbiting relatively massive companion stars (> 8M ⊙$$ {}_{\odot } $$).
Gian Luca Israel, Roberta Amato, Matteo Imbrogno, Nicoló Oreste Pinciroli Vago, on behalf of a Larger Team, Guillermo Andres Rodríguez Castillo, Andrea Belfiore, Luigi Stella, Matteo Bachetti, Felix Fürst, Dom Walton, Matthew Middleton, Murray Brightman, Fabio Pintore, Ciro Pinto, Silvia Conforti, Luca Zampieri, Chiara Salvaggio, Anna Wolter, Andrea Tiengo, Andrea De Luca, Paolo Esposito, Ruben Salvaterra, Hannah Earnshaw, Tim Roberts, Andres Gúrpide, Sara Motta   +26 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

ON MASS LOSS FROM EVOLVED MASSIVE STARS

Odessa Astronomical Publications, 2017
We consider stationary out flowing stellar envelopes accelerated by a radiation flux pressure. A method is developed describing a spherically symmetric flow in radiational hydrodynamics in regions with arbitrary optical depth (τ ).
A. V. Dorodnitsyn, G. S. Bisnovatyi-Kogan   +1 more
doaj   +1 more source