Zobrazeno 1 - 10
of 44
pro vyhledávání: '"O. L. Dors"'
Autor:
Payel Nandi, C. S. Stalin, D. J. Saikia, Rogemar A. Riffel, Arijit Manna, Sabyasachi Pal, O. L. Dors, Dominika Wylezalek, Vaidehi S. Paliya, Payaswini Saikia, Pratik Dabhade, Markus-Kissler Patig, Ram Sagar
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 2, p 116 (2023)
Black-hole-driven outflows in galaxies hosting active galactic nuclei (AGN) may interact with their interstellar medium (ISM) affecting star formation (SF). Such feedback processes, reminiscent of those seen in massive galaxies, have been reported re
Externí odkaz:
https://doaj.org/article/0cef3757c123491e93570f12b7d8f839
Autor:
Mark Armah, Rogério Riffel, O L Dors, Kyuseok Oh, Michael J Koss, Claudio Ricci, Benny Trakhtenbrot, Mabel Valerdi, Rogemar A Riffel, Angela C Krabbe
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 520:1687-1703
We present oxygen abundances relative to hydrogen (O/H) in the narrow line regions (NLRs) gas phases of Seyferts 1 (Sy 1s) and Seyferts 2 (Sy 2s) Active Galactic Nuclei (AGNs). We used fluxes of the optical narrow emission line intensities [$3\,500
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f58b14e14fe60e3b846479b379110aa
https://doi.org/10.1093/mnras/stad217
https://doi.org/10.1093/mnras/stad217
Autor:
O. L. Dors
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 507:466-474
We derived a bi-dimensional calibration between the emission-line ratios $R_{23}= ([\mathrm{ O}\, {\small {\rm II}}]\,\lambda 3726 +\lambda 3729 +[\mathrm{ O}\mathrm{ }\, {\small {\rm III}}]\,\lambda 4959 + \lambda 5007)/\rm H\,\beta$, ${\it P}=[([\m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bcf20216756f96e2d232ee2ad7ac151
https://doi.org/10.1093/mnras/stab2166
https://doi.org/10.1093/mnras/stab2166
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters. 506:L11-L15
We use Gemini GMOS-IFU observations of three luminous nearby Seyfert galaxies (Mrk79, Mrk348 and Mrk607) to estimate the electron temperature ($T_{\rm e}$) fluctuations in the inner 0.4-1.1 kpc region of these galaxies. Based on $T_{\rm e}$ determina
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f0fc45cc5e0eacadf56dd84ad13a9a3
https://doi.org/10.1093/mnrasl/slab064
https://doi.org/10.1093/mnrasl/slab064
Autor:
O L Dors, M Valerdi, P Freitas-Lemes, A C Krabbe, R A Riffel, E B Amôres, R Riffel, M Armah, A F Monteiro, C B Oliveira
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44517ad3eae3078c5dd23ce08a9bdcf0
http://arxiv.org/abs/2206.09836
http://arxiv.org/abs/2206.09836
Autor:
C B Oliveira, A C Krabbe, J A Hernandez-Jimenez, O L Dors, I A Zinchenko, G F Hägele, M V Cardaci, A F Monteiro
The ionizing source of Low Ionization Nuclear Emission Regions (LINERs) is uncertain. Because of this, an empirical relation to determine the chemical abundances of these objects has not been proposed. In this work, for the first time, we derived two
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72a3c425ee415e8d8e4fd688f5b688c4
Autor:
A. F. Monteiro, O. L. Dors
For the first time, the argon abundance relative to hydrogen abundance (Ar/H) in the narrow line region of a sample of Seyfert 2 nuclei has been derived. In view of this, optical narrow emission line intensities of a sample of 64 local Seyfert 2 nucl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::694b87729e5086fec32dd5b30a8d2ca1
http://arxiv.org/abs/2109.10590
http://arxiv.org/abs/2109.10590
Autor:
L. J. de Melo de Azevedo, L. Katena, Antonio Kanaan, Paula Coelho, M. V. Costa-Duarte, F. Urrutia-Viscarra, A. Schnorr Müller, Irapuan Rodrigues, Erik V.R. de Lima, Angela Krabbe, David Alexander Kann, M. Vika, Carlos Gabriel Escudero, S. Alencar, Dennis Zaritsky, Nina S. T. Hirata, G. Damke, Fernando Roig, H. Farías, Leonardo A. Almeida, Anthony H. Gonzalez, D. Brito-Silva, Favio Raúl Faifer, F. Almeida-Fernandes, Luca Izzo, H. J. Rocha Pinto, O. L. Dors, W. A. Santos, M. Jaque Arancibia, Rafael M. Santucci, Pieter Westera, Yara L. Jaffé, Bruno Quint, Kanak Saha, R. S. Nemmen, Roberto K. Saito, L. A. Gutiérrez-Soto, Silvia Rossi, Leandro Alberto Sesto, Lilianne Mariko Izuti Nakazono, Ana L. Chies-Santos, L. Azanha, C. Labayru, Christina C. Thöne, William Schoenell, C. Lima-Dias, A. de Ugarte Postigo, S. S. Eikenberry, Carlos A. Fernandes, E. A. Hartmann, R. A. Ortega-Minakata, L. Sampedro, Ramachrisna Teixeira, P. Amram, Daniela Lazzaro, N. Muñoz-Elgueta, R. Lopes de Oliveira, C. H. Veiga, E. Pattaro, Teresa Santos-Silva, C. B. Pereira, S. V. Werner, R. Cid Fernandes, F. R. Herpich, Alexandre S. Oliveira, Simone Daflon, R. S. de Souza, J. S. Alcaniz, Analia Viviana Smith Castelli, Beatriz B. Siffert, D. F. De Paula, C. Bonatto, H. D. Perottoni, Marina Trevisan, Y. Jimenez-Teja, Eduardo S. Pereira, L. Sodré, Timothy C. Beers, M. Borges Fernandes, A. Werle, M. L. Buzzo, C. Mendes de Oliveira, M. Castejon, Vinicius M. Placco, Richard L. Donnerstein, Javier Alonso-García, Roderik Overzier, S. Bonoli, J. A. Hernandez-Jimenez, C. Queiroz, Beatriz Luci Fernandes, Rodolfo H. Barbá, R. Monteiro-Oliveira, Thiago S. Gonçalves, R. Silva, Alvaro Alvarez-Candal, Arianna Cortesi, G. Fabiano de Souza, Karín Menéndez-Delmestre, Eduardo S. Cypriano, T. Ribeiro, J. Caffer, Zach Cano, Martin Makler, S. Fontes, H. S. Xavier, C. L. Barbosa, V. Jatenco-Pereira, K. G. Diem, Amanda R. Lopes, M. L. L. Dantas, R. C. Thom de Souza, A. Galarza, Jane Gregorio-Hetem, J. L. Nilo Castellón, A. Z. Vitorelli, D. Ortíz, R. de Menezes, Denise R. Gonçalves, Reginaldo Bezerra dos Santos, Jordi Miralda-Escudé, J. D. Hernández-Fernández, R. A. Dupke, Alberto Molino, R. Magalhães, L. Riguccini, A. Campillay, Ribamar R. R. Reis, Leandro Kerber, Fabricio Ferrari, G. B. Lima Neto, Pedro H. Bernardinelli, Stavros Akras, V. Branco, Devin D. Whitten, Luis Raul Weber Abramo, P. M. Novais, Antonio D. Montero-Dorta, S. Torres-Flores, Eduardo Telles, J. M. Carvano, C. E. Barbosa, R. de la Reza, Paulo A. A. Lopes, Alessandro Ederoclite
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 489:3403-3411
In this study we define a new sample of distant powerful radio galaxies in order to study their host-galaxy properties and provide targets for future observations of HI absorption with new radio telescopes and to understand the fuelling and feedback
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0680faa842ecd7e1661b26d0f27e1b6
https://doi.org/10.1093/mnras/stz2371
https://doi.org/10.1093/mnras/stz2371
Autor:
C. B. Oliveira, O. L. Dors, N. R. Telles, Angela Krabbe, Mónica V. Cardaci, Guillermo F. Hägele, J. A. Hernandez-Jimenez, Igor Zinchenko
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Chemical abundance determinations in Low-Ionization Nuclear Line Regions (LINERs) are especially complex and uncertain because the nature of the ionizing source of this kind of object is unknown. In this work, we study the oxygen abundance in relatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a001f7044cf9e279a0b7e4f26e00560e
http://arxiv.org/abs/2105.02072
http://arxiv.org/abs/2105.02072
Autor:
Guillermo F. Hägele, José M. Vílchez, R. García-Benito, O. L. Dors, Enrique Pérez-Montero, Mónica V. Cardaci
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
Nuclear Activity in Galaxies Across Cosmic Time, Proceedings of the conference held 7-11 October 2019 in Addis Ababa, Ethiopia. Edited by Mirjana Pović et al. Proceedings of the International Astronomical Union, Volume 356, pp. 61-65
We present
We present
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::537931d47abcbcdad2fb6bd854288f24
http://hdl.handle.net/10261/252391
http://hdl.handle.net/10261/252391