Zobrazeno 1 - 10
of 3 854
pro vyhledávání: '"Riffel A"'
Autor:
Riffel, Rogemar A., Souza-Oliveira, Gabriel L., Costa-Souza, José Henrique, Zakamska, Nadia L., Storchi-Bergmann, Thaisa, Riffel, Rogério
We use James Webb Space Telescope (JWST) Mid-Infrared Instrument (MIRI) medium-resolution spectrometer (MRS) observations of UGC 8782, CGCG 012-070 and NGC 3884 to investigate the origin of the H$_2$ emission. These three nearby AGN hosts are known t
Externí odkaz:
http://arxiv.org/abs/2410.06960
Autor:
de Mellos, Maitê S. Z., Riffel, Rogemar A., Schimoia, Jaderson S., Rembold, Sandro B., Riffel, Rogério, Storchi-Bergmann, Thaisa, Wylezalek, Dominika, Ilha, Gabriele S., Albán, Marco, Dors, Oli L., Gatto, Lara, Krabbe, Angela C., Mallmann, Nicolas D., Trevisan, Marina
The influence of Active Galactic Nuclei (AGN) on star formation within their host galaxies remains a topic of intense debate. One of the primary challenges in quantifying the star formation rate (SFR) within AGN hosts arises from the prevalent assump
Externí odkaz:
http://arxiv.org/abs/2410.06297
Autor:
Armah, Mark, Riffel, Rogério, Dahmer-Hahn, L. G., Davies, R. I., Dors, O. L., Kakkad, Darshan, Riffel, Rogemar A., Rodríguez-Ardila, A., Ruschel-Dutra, D., Storchi-Bergmann, T.
We explore the relations between the gas-phase metallicity radial profiles (few hundred inner parsec) and multiple galaxy properties for 15 Seyfert galaxies from the AGNIFS (Active Galactic Nuclei Integral Field Spectroscopy) sample using optical Int
Externí odkaz:
http://arxiv.org/abs/2409.20465
Autor:
Benedetti, João P. V., Riffel, Rogério, Ricci, Tiago, Riffel, Rogemar A., Pastoriza, Miriani, Trevisan, Marina, Dahmer-Hahn, Luis G., Ruschel-Dutra, Daniel, Rodríguez-Ardila, Alberto, Ferré-Mateu, Anna, Vazdekis, Alexandre, Steiner, João
We studied the ionized gas in the inner region ($\sim680\times470$ pc$^2$) of the galaxy NGC 6868 using Gemini/GMOS integral field unit observations. Channel maps reveal complex kinematics and morphology, indicating multiple processes at work in NGC
Externí odkaz:
http://arxiv.org/abs/2409.08047
Autor:
Costa-Souza, J. H., Riffel, Rogemar A., Souza-Oliveira, Gabriel L., Zakamska, Nadia L., Bianchin, Marina, Storchi-Bergmann, Thaisa, Riffel, Rogério
We use the James Webb Space Telescope (JWST) Mid-Infrared Instrument (MIRI) medium-resolution spectrometer (MRS) observations of the radio loud AGN host UGC 8782 to map the warm molecular and ionized gas kinematics. The data reveal spatially resolved
Externí odkaz:
http://arxiv.org/abs/2408.06100
Autor:
Bierschenk, M., Ricci, C., Temple, M. J., Satyapal, S., Cann, J., Xie, Y., Diaz, Y., Ichikawa, K., Koss, M. J., Bauer, F. E., Rojas, A., Kakkad, D., Tortosa, A., Ricci, F., Mushotzky, R., Kawamuro, T., Gupta, K. K., Trakhtenbrot, B., Chang, C. S., Riffel, R., Oh, K., Harrison, F., Powell, M., Stern, D., Urry, C. M.
We analyze the Spitzer spectra of 140 active galactic nuclei (AGN) detected in the hard X-rays (14-195 keV) by the Burst Alert Telescope (BAT) on board Swift. This sample allows us to probe several orders of magnitude in black hole masses ($10^6-10^9
Externí odkaz:
http://arxiv.org/abs/2409.17334
We present a kinematic analysis based on the large Integral Field Spectroscopy (IFS) dataset of SDSS-IV MaNGA (10.000 galaxies). We have compiled a diverse sample of 594 unique Active Galactic Nuclei (AGN), identified through a variety of independent
Externí odkaz:
http://arxiv.org/abs/2408.16831
Autor:
Dors, O. L., Almeida, G. C., Oliveira, C. B., Flury, S. R., Riffel, R., Riffel, R. A., Cardaci, M. V., Hägele, G. F., Ilha, G. S., Krabbe, A. C., Arellano-Córdova, K. Z., Santos, P. C., Morais, I. N.
For the first time, a calibration between the HeI $\lambda5876$/H$\beta$ emission line ratio and the helium abundance $y$=12+log(He/H) for Narrow line regions (NLRs) of Seyfert~2 Active Galactic Nuclei (AGN) is proposed. In this context, observationa
Externí odkaz:
http://arxiv.org/abs/2406.03259
Autor:
Dors, O. L., Cardaci, M. V., Hägele, G. F., Valerdi, M., Ilha, G. S., Oliveira, C. B., Riffel, R. A., Flury, S. R., Arellano-Córdova, K. Z., Storchi-Bergmann, T., Riffel, R., Almeida, G. C., Morais, I. N.
We derive the nitrogen and oxygen abundances in the Narrow Line Regions (NLRs) of a sample of 38 local ($z \: < \: 0.4$) Seyfert~2 nuclei. For that, we consider narrow optical emission line intensities and direct estimates of the electron temperature
Externí odkaz:
http://arxiv.org/abs/2405.13906
Autor:
Riffel, Rogerio, Dahmer-Hahn, Luis G., Vazdekis, Alexandre, Davies, Richard, Rosario, David, Almeida, Cristina Ramos, Audibert, Anelise, Martin-Navarro, Ignacio, Martins, Lucimara Pires, Rodriguez-Ardila, Alberto, Riffel, Rogemar A., Storchi-Bergmann, Thaisa, Bertoldo-Coelho, Michele, Trevisan, Marina, Hicks, Erin, Muller, Allan Schnorr, Marinho, Lais Nery, Veilleux, Sylvain
Near-infrared long-slit spectroscopy has been used to study the stellar population (SP) of the low luminosity active galactic nuclei (AGN) and matched analogues (LLAMA) sample. To perform the SP fits we have employed the X-shooter simple stellar popu
Externí odkaz:
http://arxiv.org/abs/2405.00634