Zobrazeno 1 - 10
of 110
pro vyhledávání: '"Dultzin, Deborah"'
Autor:
Marziani, Paola, Floris, Alberto, Deconto-Machado, Alice, Panda, Swayamtrupta, Śniegowska, Marzena, Garnica, Karla, Dultzin, Deborah, D'Onofrio, Mauro, Del Olmo, Ascensión, Bon, Edi, Bon, Nataša
The 4D Eigenvector 1 sequence has proven to be a highly effective tool for organizing observational and physical properties of type 1 active galactic nuclei (AGN). In this paper, we present multiple measurements of metallicity for the broad line regi
Externí odkaz:
http://arxiv.org/abs/2401.02266
Autor:
Garnica, Karla, Negrete, C. Alenka, Marziani, Paola, Dultzin, Deborah, Śniegowska, Marzena, Panda, Swayamtrupta
Publikováno v:
A&A 667, A105 (2022)
We present an analysis of UV spectra of quasars at intermediate redshifts believed to belong to the extreme Population A (xA), aimed to estimate the chemical abundances of the broad line emitting gas. We follow the approach described in a previous wo
Externí odkaz:
http://arxiv.org/abs/2208.02387
Autor:
Arredondo, Donaji Esparza, Martín, Omaira González, Dultzin, Deborah, Masegosa, Josefa, Almeida, Cristina Ramos, Bernete, Ismael García, Fritz, Jacopo, Clavijo, Natalia Osorio
Publikováno v:
A&A 651, A91 (2021)
In the last decades, several multiwavelength studies have been dedicated to exploring the properties of the obscuring material in active galactic nuclei (AGN). Various models have been developed to describe the structure and distribution of this mate
Externí odkaz:
http://arxiv.org/abs/2104.11263
Autor:
Martínez-Aldama, Mary Loli, Panda, Swayamtrupta, Czerny, Bożena, Marinello, Murilo, Marziani, Paola, Dultzin, Deborah
In this second paper in the series, we carefully analyze the observational properties of the optical FeII and NIR CaII triplet in Active Galactic Nuclei, as well as the luminosity, black hole mass, and Eddington ratio in order to define the driving m
Externí odkaz:
http://arxiv.org/abs/2101.06999
Autor:
Panda, Swayamtrupta, Martínez-Aldama, Mary Loli, Marinello, Murilo, Czerny, Bożena, Marziani, Paola, Dultzin, Deborah
Optical Fe II emission is a strong feature in quasar spectra originating in the broad-line region (BLR). The difficulty in understanding the complex Fe II pseudo-continuum has led us to search for other reliable, simpler ionic species such as Ca II.
Externí odkaz:
http://arxiv.org/abs/2004.05201
Autor:
Esparza-Arredondo, Donaji, González-Martín, Omaira, Dultzin, Deborah, Ramos-Almeida, Cristina, Fritz, Jacopo, Masegosa, Josefa, Pasetto, Alice, Martínez-Paredes, Mariela, Osorio-Clavijo, Natalia, Victoria-Ceballos, Cesar
In order to understand the diversity of classes observed in active galactic nuclei (AGN), a geometrically and optically thick torus of gas and dust is required to obscure the central engine depending on the line of sight to the observer. We perform a
Externí odkaz:
http://arxiv.org/abs/1910.04912
Autor:
Artola, Rodolfo, Beroiz, Martin, Cabral, Juan, Camuccio, Richard, Castillo, Moises, Chavushyan, Vahram, Colazo, Carlos, Larenas, Hector Cuevas, DePoy, Darren L., Díaz, Mario C., Domínguez, Mariano, Dultzin, Deborah, Fernández, Daniela, Ferreyra, Antonio C., Fonrouge, Aldo, Franco, José, Graña, Darío, Girardini, Carla, Gurovich, Sebastián, Kanaan, Antonio, Lambas, Diego G., Lares, Marcelo, Hinojosa, Alejandro F., Hinojosa, Andrea, Hinojosa, Americo F., López-Cruz, Omar, Macri, Lucas M., Marshall, Jennifer L., Melia, Raul, Mendoza, Wendy, Castellón, José L. Nilo, Padilla, Nelson, Perez, Victor, Peñuela, Tania, Rattray, Wahltyn, Renzi, Víctor, Ríos-López, Emmanuel, Rivera, Amelia Ramírez, Ribeiro, Tiago, Rodriguez, Horacio, Sánchez, Bruno, Schneiter, Matías, Schoenell, William, Starck, Manuel, Vrech, Rubén, Quiñones, Cecilia, Tapia, Luis, Tornatore, Marina, Torres-Flores, Sergio, Vilchis, Ervin, Zadrożny, Adam
We present the results of the optical follow-up, conducted by the TOROS collaboration, of gravitational wave events detected during the Advanced LIGO-Virgo second observing run (Nov 2016 -- Aug 2017). Given the limited field of view ($\sim100\arcmin$
Externí odkaz:
http://arxiv.org/abs/1901.02960
Autor:
Esparza-Arredondo, Donaji, Gonzalez-Martin, Omaira, Dultzin, Deborah, Alonso-Herrero, Almudena, Almeida, Cristina Ramos, Diaz-Santos, Tanio, Garcia-Bernete, Ismael, Martinez-Paredes, Mariela, Rodriguez-Espinosa, Jose Miguel
We studied the circumnuclear MIR emission in a sample of 19 local active galactic nuclei (AGN) with high spatial resolution spectra using T-ReCS (Gemini) and CanariCam (GTC), together with IRS/Spitzer observations. We measured the flux and the equiva
Externí odkaz:
http://arxiv.org/abs/1804.07311
Publikováno v:
Front. Astron. Space Sci, 2017, pp.2017 - 2017
The connection between multifrequency quasar observational and physical parameters related to accretion processes is still open to debate. In the last 20 year, Eigenvector 1-based approaches developed since the early papers by Boroson and Green (1992
Externí odkaz:
http://arxiv.org/abs/1702.02468
Autor:
Hernández-Ibarra, Francisco J., Krongold, Yair, Dultzin, Deborah, del Olmo, Ascensión, Perea, Jaime, González, Jesús, Mendoza-Castrejón, Sandro, Bitsakis, Theodoros
We analysed 385 galactic spectra from the Sloan Digital Sky Survey Data Release 7 (SDSS-DR7) that belong to the catalog of isolated pairs of galaxies by Karachentsev. The spectra corresponds to physical pairs of galaxies as defined by V $\leq$ 1200 K
Externí odkaz:
http://arxiv.org/abs/1509.02186