Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Oskinova, Lidia M"'
Autor:
Jha, Saurabh W., Casetti-Dinescu, Dana I., Bernstein, Gary M., Hayes, Matthew J., Oskinova, Lidia M., Pace, Andrew B., Quimby, Robert M., Reiter, Megan, Rest, Armin, Riess, Adam G., Sand, David J., Weisz, Daniel R.
The Astro2020 Decadal Survey recognizes time-domain astronomy as a key science area over the next decade and beyond. With over 30 years of HST data and the potential for 20 years of JWST operations, these flagship observatories offer an unparalleled
Externí odkaz:
http://arxiv.org/abs/2405.12297
Autor:
Parsons, Timothy N., Prinja, Raman K., Bernini-Peron, Matheus, Fullerton, Alex W., Massa, Derck L., Oskinova, Lidia M., Pauli, Daniel, Sander, Andreas A. C., Rickard, Matthew J.
Accurate determination of mass-loss rates from massive stars is important to understanding stellar and galactic evolution and enrichment of the interstellar medium. Large-scale structure and variability in stellar winds have significant effects on ma
Externí odkaz:
http://arxiv.org/abs/2401.01240
Autor:
Bernini-Peron, Matheus, Marcolino, Wagner L. F., Sander, Andreas A. C., Bouret, Jean-Claude, Ramachandran, Varsha, Saling, Julian, Schneider, Fabian R. N., Oskinova, Lidia M., Najarro, Francisco
Publikováno v:
A&A 677, A50 (2023)
B supergiants (BSGs) are evolved stars with effective temperatures between 10 to 30 kK and are important to understand massive star evolution. Located on the edge of the line-driven wind regime, the study of their atmospheres is helpful to understand
Externí odkaz:
http://arxiv.org/abs/2307.05421
X-ray spectroscopy is a sensitive probe of stellar winds. X-rays originate from optically thin shock-heated plasma deep inside the wind and propagate outwards throughout absorbing cool material. Recent analyses of the line ratios from He-like ions in
Externí odkaz:
http://opus.kobv.de/ubp/volltexte/2008/1813/
Clumps in hot star winds can originate from shock compression due to the line driven instability. One-dimensional hydrodynamic simulations reveal a radial wind structure consisting of highly compressed shells separated by voids, and colliding with fa
Externí odkaz:
http://opus.kobv.de/ubp/volltexte/2008/1797/
Modeling expanding atmospheres is a difficult task because of the extreme non-LTE situation, the need to account for complex model atoms, especially for the iron-group elements with their millions of lines, and because of the supersonic expansion. Ad
Externí odkaz:
http://opus.kobv.de/ubp/volltexte/2008/1783/
Autor:
Gilkis, Avishai, Shenar, Tomer, Ramachandran, Varsha, Jermyn, Adam S., Mahy, Laurent, Oskinova, Lidia M., Arcavi, Iair, Sana, Hugues
The Humphreys-Davidson (HD) limit empirically defines a region of high luminosities (log L > 5.5) and low effective temperatures (T < 20kK) on the Hertzsprung-Russell Diagram in which hardly any supergiant stars are observed. Attempts to explain this
Externí odkaz:
http://arxiv.org/abs/2102.03102
The merger of two white dwarfs (WD) is a natural outcome from the evolution of many binary stars. Recently, a WD merger product, IRAS 00500+6713, was identified. IRAS 00500+6713 consists of a central star embedded in a circular nebula. The analysis o
Externí odkaz:
http://arxiv.org/abs/2008.10612
Publikováno v:
A&A 641, L8 (2020)
KQ Vel is a peculiar A0p star with a strong surface magnetic field of about 7.5 kG. It has a slow rotational period of nearly 8 years. Bailey et al. (2015) detected a binary companion of uncertain nature, and suggested it could be a neutron star or a
Externí odkaz:
http://arxiv.org/abs/2007.11591
Autor:
Oskinova, Lidia M., Bik, Arjan, Mas-Hesse, J. Miguel, Hayes, Matthew, Adamo, Angela, Oestlin, Goeran, Fuerst, Felix, Oti-Floranes, Hector
Publikováno v:
A&A 627, A63 (2019)
X-ray radiation from accreting compact objects is an important part of stellar feedback. The metal-poor galaxy ESO 338-4 has experienced vigorous starburst during the last 40 Myr and contains some of the most massive super star clusters in the nearby
Externí odkaz:
http://arxiv.org/abs/1903.05142