Zobrazeno 1 - 10
of 13
pro vyhledávání: '"A C Krabbe"'
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
Autor:
E Wenderoth, M Faúndez-Abans, P C da Rocha-Poppe, M de Oliveira-Abans, A C Krabbe, V A Fernandes-Martin
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 515:1052-1064
We report the results of the first spectroscopic study of the galaxy HRG 705, which belongs to the Solitaire class of peculiar (collisional) Ring Galaxies, which, in turn, are little studied. The nuclear emission-line spectrum resembles that of a sta
Autor:
Oli L Dors, M Valerdi, R A Riffel, R Riffel, M V Cardaci, G F Hägele, Mark Armah, M Revalski, S R Flury, P Freitas-Lemes, E B Amôres, A C Krabbe, L Binette, A Feltre, T Storchi-Bergmann
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62662ea46eff9bdd9b62c8ec6b1c7058
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:
Silas C. Krabbe
Publikováno v:
Philosophical Inquiry in Education. 29:221
Autor:
Elin Børøsund, Jens Bollerslev, Nes Lise Solberg, Line C. Krabbe, Cecilie Varsi, Kari Abelsen, Berit Seljelid
Publikováno v:
Endocrine Abstracts.
Autor:
Dinalva A. Sales, Ângela C. Krabbe, Rogério Riffel, Rogemar A. Riffel, O. L. Dors, Guillermo F. Hägele, José M. Vílchez, Enrique Pérez-Montero, Mónica V. Cardaci
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
We have used observational spectroscopic data of star-forming regions compiled from the literature and photoionization models to analyse the neon ionic abundances obtained using both optical and mid-infrared emission lines. Comparing Ne++/H+ ionic ab
Publikováno v:
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Universidad Nacional de La Plata
instacron:UNLP
We analyzed the evolution of the metallicity of the gas with the redshift for a sample of AGNs in a very wide redshift range (0
Comment: 25 pages, 10 figures, accepted MNRAS
Comment: 25 pages, 10 figures, accepted MNRAS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ffb3c1d459789dba7bec245e89eaea79
Publikováno v:
DMW - Deutsche Medizinische Wochenschrift. 124:721-726
History and admission findings A 51-year-old man without significant previous illness presented with treatment-resistant arterial hypertension, dyspnoea, increased fatigue and headaches. Except for a florid face and fine tremor the physical examinati