Zobrazeno 1 - 10
of 1 301
pro vyhledávání: '"P, Riffel"'
Autor:
Eftekhari, E., Vazdekis, A., Riffel, R., Dahmer-Hahn, L. G., Chies-Santos, A. L., Beasley, M. A., Villaume, A., Zanatta, E.
Many recent studies have pointed out significant discrepancies between observations and models of stellar populations in the near-infrared (NIR). With current and future observing facilities being focused in this wavelength range, properly assessing
Externí odkaz:
http://arxiv.org/abs/2412.13587
Autor:
Dahmer-Hahn, L. G., Chies-Santos, A. L., Eftekhari, E., Zanatta, E., Riffel, R., Vazdekis, A., Villaume, A., Beasley, M. A., Lassen, A. E.
Publikováno v:
Astronomy & Astrophysics, October 2024, Volume 690, id.A93, 9 pp
One way to constrain the evolutionary histories of galaxies is to analyse their stellar populations. In the local Universe, our understanding of the stellar population properties of galaxies has traditionally relied on the study of optical absorption
Externí odkaz:
http://arxiv.org/abs/2412.13585
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 3C 293 (UGC 8782), CGCG 012-070 and NGC 3884 to investigate the origin of the H$_2$ emission. These three nearby Active Galac
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
Publikováno v:
A&A 691, A124 (2024)
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