Results 11 to 20 of about 198,420 (284)

THE MASSIVE STELLAR POPULATION IN THE DWARF STARBURST GALAXIES

open access: yesOdessa Astronomical Publications, 2017
The analysis of the long-slit spectral observations of 39 Wolf-Rayet (WR) galaxies with heavy element mass fraction ranging over 2 orders of magnitudes from Z☉/50 to 2Z☉ are presented.
N. G. Guseva
doaj   +1 more source

A Spitzer survey of mid-infrared molecular emission from protoplanetary disks I: Detection rates [PDF]

open access: yes, 2010
We present a Spitzer InfraRed Spectrometer search for 10-36 micron molecular emission from a large sample of protoplanetary disks, including lines from H2O, OH, C2H2, HCN and CO2.
Alcala   +49 more
core   +2 more sources

Emission Lines in Star Forming Galaxies [PDF]

open access: yesSymposium - International Astronomical Union, 1995
Magris et al. (1993, Proceedings of the ESO/OHP Workshop on Dwarf Galaxies, ed. G. Meylan) have combined the spectral evolution population synthesis code of Bruzual & Charlot (1993, ApJ 405, 538) with the multipurpose photoionization-shock code MAPPINGS (Binette et al.
Gustavo A. Bruzual, Gladis C. Magris
openaire   +1 more source

The Orbital and Physical Properties of Five Southern Be+sdO Binary Systems

open access: yesThe Astronomical Journal, 2023
Close binary interactions may play a critical role in the formation of the rapidly rotating Be stars. Mass transfer can result in a mass gainer star spun up by the accretion of mass and angular momentum, while the mass donor is stripped of its envelope ...
Luqian Wang   +3 more
doaj   +1 more source

Cooling of strange stars in the color-flavor locked phase with a rotating crust Cooling of strange stars in the color-flavor locked phase with a rotating crust [PDF]

open access: yes, 2006
The presence of the color-flavor locked (CFL) phase strongly suppresses the neutrino emission processes and the quark specific heat. As a result the cooling of the strange stars in the CFL phase is dominated by deconfinement heating and surface emission.
Xiaoping, Zheng   +2 more
core   +1 more source

Gamma Cas Stars as Be+White Dwarf Binary Systems

open access: yesThe Astrophysical Journal Letters, 2022
The origin of the bright and hard X-ray emission flux among the γ Cas subgroup of B-emission line (Be) stars may be caused by gas accretion onto an orbiting white dwarf (WD) companion.
Douglas R. Gies   +2 more
doaj   +1 more source

Mass Outflow and Chromospheric Activity of Red Giant Stars in Globular Clusters II. M13 and M92 [PDF]

open access: yes, 2009
High resolution spectra of 123 red giant stars in the globular cluster M13 and 64 red giant stars in M92 were obtained with Hectochelle at the MMT telescope.
A. K. Dupree   +32 more
core   +1 more source

Constraints to the magnetospheric properties of T Tauri stars. I. The C II], Fe II] and Si II] ultraviolet features [PDF]

open access: yes, 2014
The C II] feature at ~2325 Angstrom is very prominent in the spectra of T Tauri stars (TTSs). This feature is a quintuplet of semiforbidden transitions excited at electron temperatures around 10,000 K that, together with the nearby Si II] and Fe II ...
de Castro, Ana Ines Gomez   +1 more
core   +3 more sources

A photometric catalogue of southern emission-line stars [PDF]

open access: yesAstronomy & Astrophysics, 2001
42 pages, no figures, to appear in Astronomy & ...
de Winter, D.   +7 more
openaire   +2 more sources

Emission activity of the Be star 60 Cygni [PDF]

open access: yesSerbian Astronomical Journal, 2017
In this paper we present results of spectroscopic analysis of the H® line profile of the Be star 60 Cygni. We present time evolution of the equivalent width of the H® line profiles during years 1992 - 2016 and V=R variation during years 1995 ...
Šejnová K., Votruba V.
doaj   +1 more source

Home - About - Disclaimer - Privacy