Zobrazeno 1 - 10
of 65
pro vyhledávání: '"P. Freitas-Lemes"'
Autor:
Dors, O. L., Valerdi, M., Riffel, R. A., Riffel, R., Cardaci, M. V., Hägele, G. F., Armah, M., Revalski, M., Flury, S. R., Freitas-Lemes, P., Amôres, E. B., Krabbe, A. C., Binette, L., Feltre, A., Storchi-Bergmann, T.
For the first time, the sulphur abundance relative to hydrogen (S/H) in the Narrow Line Regions of a sample of Seyfert 2 nuclei (Sy 2s) has been derived via direct estimation of the electron temperature. Narrow emission line intensities from the SDSS
Externí odkaz:
http://arxiv.org/abs/2302.12876
Autor:
Dors, O. L., Valerdi, M., Freitas-Lemes, P., Krabbe, A. C., Riffel, R. A., Amôres, E. B., Riffel, R., Armah, M., Monteiro, A. F., Oliveira, C. B.
For the first time, the helium abundance relative to hydrogen (He/H), which relied on direct measurements of the electron temperature, has been derived in the narrow line regions (NLRs) from a local sample of Seyfert 2 nuclei. In view of this, optica
Externí odkaz:
http://arxiv.org/abs/2206.09836
Autor:
Carvalho, S. P., Dors, O. L., Cardaci, M. V., Hagele, G. F., Krabbe, A. C., Perez-Montero, E., Monteiro, A. F., Armah, M., Freitas-Lemes, P.
We present a semi-empirical calibration between the metallicity ($Z$) of Seyfert 2 Active Galactic Nuclei and the $N2$=log([N II]$\lambda$6584/H$\alpha$) emission-line intensity ratio. This calibration was derived through the [O III]$\lambda$5007/[O
Externí odkaz:
http://arxiv.org/abs/2001.07126
Autor:
Dors, O. L., Freitas-Lemes, P., Amores, E. B., Perez-Montero, E., Cardaci, M. V., Hagele, G. F., Armah, M., Krabbe, A. C., Faundez-Abans, M.
We compare the oxygen abundance (O/H) of the Narrow Line Regions (NLRs) of Seyfert 2 AGNs obtained through strong-line methods and from direct measurements of the electron temperature (Te-method). The aim of this study is to explore the effects of th
Externí odkaz:
http://arxiv.org/abs/1912.04236
Akademický článek
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Autor:
Diego Gonçalves Camargo, Juliane Amaral Toledo e Vieira, Adriana Oliveira Guilarde, Juliana Alves Costa Moreira, Haline Reis De Oliveira, Ariana Rocha Romão Godoi, Lucas Candido Gonçalves Barbosa, Matheus Henrique Gonçalves Santos, Ciro Bruno Silveira Costa, Vanúsia Rodrigue Leite, Sorreylla Paulla Silva Vasconcelos, Tatiane Barbosa Mendes de Freitas Lemes, Laryssa Martins Mendes Silva
Publikováno v:
Brazilian Journal of Infectious Diseases, Vol 27, Iss , Pp 103339- (2023)
Introdução: A sepse é definida pela presença de disfunção orgânica ameaçadora à vida, devido à resposta inflamatória exacerbada do hospedeiro à infecção. A fim de melhorar o manejo da sepse, foi instituída o Protocolo de Sepse, embasad
Externí odkaz:
https://doaj.org/article/f8c479f7eb7e4c07a307421d61d5cde0
Publikováno v:
2017, MNRAS 464, 293R
GMOS-IFU observational data were used to study the detailed two dimensional gas kinematics and morphological structures within the ~500x421 pc^2 of the active Seyfert 2 galaxy NGC 4501. We provide empirical evidences of possible outflowing material f
Externí odkaz:
http://arxiv.org/abs/1702.00023
Autor:
Dors, O. L., Cardaci, M. V., Hagele, G. F., Rodrigues, I., Grebel, E. K., Pilyugin, L. S., Freitas-Lemes, P., Krabbe, A. C.
We examine the relation between oxygen abundances in the narrow-line regions (NLRs) of active galactic nuclei (AGNs) estimated from the optical emission lines through the strong-line method (the theoretical calibration of Storchi-Bergmann et al.(1998
Externí odkaz:
http://arxiv.org/abs/1508.07802
Kelvin-Helmholtz instabilities are common in astrophysical systems, ranging from jet black holes up to protoplanetary accretion disk. An astrophysical object with strong characteristics of the Kelvin-Helmholtz instability is Caraguejo Nebula, in whic
Externí odkaz:
http://arxiv.org/abs/1312.5265
The accumulation of mass from the interaction process that forms the polar ring galaxies is a factor that favors the conditions necessary to trigger nonthermal nuclear activities.. This fact encouraged the chemical analysis of ten polar ring galaxies
Externí odkaz:
http://arxiv.org/abs/1312.5275