Zobrazeno 1 - 10
of 13
pro vyhledávání: '"L. T. S. MENDES"'
We investigate stellar magnetic activity from the theoretical point of view, by using stellar evolution models to calculate theoretical convective turnover times ($\tau_{\rm c}$) and Rossby numbers (${\rm Ro}$) for pre-main-sequence and main-sequence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ae20c83be6ec4d315163ea6bdb2055c
http://arxiv.org/abs/2212.13958
http://arxiv.org/abs/2212.13958
Publikováno v:
ISA transactions. 97
Data acquisition systems are crucial when implementing control and automation strategies correctly and on time. The knowledge of the sampling time is one of the relevant features to ensure that the sampled data properly represent the process variable
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d30de35eba1a671c993674bd03387b51
https://pubmed.ncbi.nlm.nih.gov/31420122
https://pubmed.ncbi.nlm.nih.gov/31420122
Autor:
Natália R. Landin, L. T. S. Mendes
Publikováno v:
LOCUS Repositório Institucional da UFV
Universidade Federal de Viçosa (UFV)
instacron:UFV
Universidade Federal de Viçosa (UFV)
instacron:UFV
In this work, we investigate the stellar magnetic activity in the theoretical point of view, through the use of stellar structure and evolution models. We present theoretical values of convective turnover times and Rossby numbers for low-mass stars,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59f9962484e9277bcfab352352459e1f
https://doi.org/10.1017/s174392131700391x
https://doi.org/10.1017/s174392131700391x
Publikováno v:
Proceedings of the International Astronomical Union. 14:468-469
Aiming at investigating the roles of rotation and magnetic fields on AGB stars, the rotating version of the ATON stellar evolution code is being extended in order to account for intermediate--mass stars and their later evolutionary stages. Here we re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0532dd348c93cbbe010dbf24289eeb2a
https://doi.org/10.1017/s1743921318006051
https://doi.org/10.1017/s1743921318006051
Autor:
Silvia H. P. Alencar, L. da Silva, S. L. A. Vieira, M. M. Guimarães, Carlos A. O. Torres, L. T. S. Mendes, Germano R. Quast, W. J. B. Corradi
Publikováno v:
The Astronomical Journal. 126:2971-2987
We present a new catalog of 108 Herbig Ae/Be candidate stars identified in the Pico dos Dias Survey, together with 19 previously known candidates and four objects selected from the IRAS Faint Source Catalog. These 131 stars were observed with low- an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::205c5f41c28c45eab3ea2953db4b7f9b
https://doi.org/10.1086/379553
https://doi.org/10.1086/379553
Theoretical estimates of the convective turnover time for low-mass, rotating pre-main sequence stars
Publikováno v:
Proceedings of the International Astronomical Union. 2:446-448
The Rossby number Ro is an important quantity related to the well-known magnetic activity-rotation correlation for main sequence, solar-type stars. For such stars, Ro can be obtained by a semi-empirical relationship between the convective turnover ti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7756b990b6e5ed489cf09add9b803196
https://doi.org/10.1017/s1743921307000889
https://doi.org/10.1017/s1743921307000889
Publikováno v:
Proceedings of the International Astronomical Union. 2:311-313
The observational data of the Orion Nebula Cluster (ONC) is reanalyzed by means of new sets of pre-main sequence evolutionary tracks including rotation, non-gray boundary conditions and either low (LCE) or high convection efficiency (HCE). Our goal i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7e2f87925e783de56e05bc8ce39c424
https://doi.org/10.1017/s1743921307000634
https://doi.org/10.1017/s1743921307000634
Publikováno v:
Astronomy & Astrophysics. 586:A96
Rotational evolution in young stars is described by pMS evolutionary tracks including rotation, conservation of angular momentum (AM), and simulations of disk-locking (DL). By assuming that DL is the regulation mechanism for the stellar angular veloc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83fae471d5a245b5aa177eb5cd5b59a9
https://doi.org/10.1051/0004-6361/201525851
https://doi.org/10.1051/0004-6361/201525851
Magnetic fields are at the heart of the observed stellar activity in late-type stars, and they are presumably generated by a dynamo mechanism at the interface layer between the radiative and the convective stellar regions. Since dynamo models are bas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba0535586139a0333834f6f7747eed71
http://arxiv.org/abs/1001.2754
http://arxiv.org/abs/1001.2754