Zobrazeno 1 - 10
of 21
pro vyhledávání: '"N E Nuñez"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 502:3670-3684
The origin of mercury–manganese (HgMn) stars is still poorly understood and the statistical analysis of an extensive sample of well characterized objects would be very valuable. Nevertheless, the compilation of a clean and reliable list of all know
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb363a0e6600e57fc17d5167375c59f0
https://doi.org/10.1093/mnras/staa3401
https://doi.org/10.1093/mnras/staa3401
Autor:
A. Pujol, G. J. M. Luna, K. Mukai, J. L. Sokoloski, N. P. M. Kuin, F. M. Walter, R. Angeloni, Y. Nikolov, R. Lopes de Oliveira, N. E. Nuñez, M. Jaque Arancibia, T. Palma, L. Gramajo
Publikováno v:
Astronomy & Astrophysics. 670:A32
Symbiotic binaries sometimes hide their symbiotic nature for significant periods of time. There is mounting observational evidence that in those symbiotics that are powered solely by accretion of red-giant's wind material onto a white dwarf, without
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8411522583bed46529ddd6ba4650c8d6
https://doi.org/10.1051/0004-6361/202244967
https://doi.org/10.1051/0004-6361/202244967
Autor:
M. Flores, N. E. Nuñez, M. Jaque Arancibia, Pablo J. D. Mauas, R. V. Ibañez Bustos, C. Saffe, A. Buccino, P. Miquelarena, J. Alacoria, J. Yana Galarza
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Context. It is well known that from 1645 to 1715 solar activity was notably low and the number of sunspots was extremely reduced. This epoch is known as the Maunder minimum (MM). The study of stars in prolonged activity minima such as the MM could he
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e2761fd3ac86f41403a3e8293d55b7f
https://www.aanda.org/10.1051/0004-6361/202039902
https://www.aanda.org/10.1051/0004-6361/202039902
Autor:
E. Jofré, C. Saffe, M. Flores, J. F. González, M. Jaque Arancibia, Andrea P. Buccino, N E Nuñez
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
We perform, for the first time, a detailed long-term activity study of the binary system $\zeta$ Ret. We use all available HARPS spectra obtained between the years 2003 and 2016. We built a time series of the Mount Wilson $S$ index for both stars, th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::474ffc50e864dad89c091a43d9599964
https://academic.oup.com/mnras/article/476/2/2751/4945435
https://academic.oup.com/mnras/article/476/2/2751/4945435
Autor:
J. L. Sokoloski, Adrian B. Lucy, F. M. Walter, M. Jaque Arancibia, A. Segreto, R. E. Puebla, T. J. N. Nelson, Giancarlo Cusumano, Koji Mukai, G. J. M. Luna, N. E. Nuñez
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Compared to mass transfer in cataclysmic variables, the nature of accretion in symbiotic binaries in which red giants transfer material to white dwarfs (WDs) has been difficult to uncover. The accretion flows in a symbiotic binary are most clearly ob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78b989704cdfc5cb4e0ebe7bcfc81dad
Autor:
Cristian Moreno, N. E. Nuñez, G. J. M. Luna, Emmanuel Chirre, Jeong-Eun Heo, Piera Soto King, Jennifer L. Sokoloski, Rodolfo Angeloni, German Gimeno, Hee-Won Lee, Adrian B. Lucy, Ruben Diaz, Stephen J. Goodsell, Mateus Dias Ribeiro, Marcelo Jaque Arancibia, Julia Scharwächter, Bo-Eun Choi, Denise R. Gonçalves, Stavros Akras
Publikováno v:
Astronomical journal, 2019, Vol.157(4), pp.156 [Peer Reviewed Journal]
Symbiotic stars (SySts) are long-period interacting binaries composed of a hot compact star, an evolved giant star, and a tangled network of gas and dust nebulae. They represent unique laboratories for studying a variety of important astrophysical pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08277d51c92f00ddcb0d2b758102caa4
https://doi.org/10.3847/1538-3881/ab0cf7
https://doi.org/10.3847/1538-3881/ab0cf7
Symbiotic stars often contain white dwarfs with quasi-steady shell burning on their surfaces. However, in most symbiotics, the origin of this burning is unclear. In symbiotic slow novae, however, it is linked to a past thermonuclear runaway. In June
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a984438418ed1f36fe310fe3cfd2bf8a
http://arxiv.org/abs/1606.07397
http://arxiv.org/abs/1606.07397
Autor:
Koji Mukai, T. J. N. Nelson, G. J. M. Luna, A. Segreto, Giancarlo Cusumano, U. Munari, J. L. Sokoloski, Adrian B. Lucy, N. E. Nuñez
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Symbiotic star surveys have traditionally relied almost exclusively on low resolution optical spectroscopy. However, we can obtain a more reliable estimate of their total Galactic population by using all available signatures of the symbiotic phenomen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c75723bca1e0234d6b31be616ef9d70
http://arxiv.org/abs/1604.08483
http://arxiv.org/abs/1604.08483
Autor:
Jennifer L. Sokoloski, Koji Mukai, M. Jaque Arancibia, G. Cusumano, T. J. N. Nelson, Paul Kuin, A. Segreto, Gerardo Juan Manuel Luna, N. E. Nuñez
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
A sudden increase in the rate at which material reaches the most internal part of an accretion disk, i.e. the boundary layer, can change its structure dramatically. We have witnessed such change for the first time in the symbiotic recurrent nova T Cr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3eb464d5badff14485630675de771a2a
https://doi.org/10.1051/0004-6361/201833747
https://doi.org/10.1051/0004-6361/201833747
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
We report the detection, with ${\it Chandra}$ and XMM-${\it Newton}$, of faint, soft X-ray emission from four symbiotics stars that were not known to be X-ray sources. These four object show a $\beta$-type X-ray spectrum, i.e. their spectra can be mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::942d2e1845f6e1da53781a73ce9569ac