Zobrazeno 1 - 10
of 567
pro vyhledávání: '"Roche, P. F."'
Autor:
Rigopoulou, Dimitra, Donnan, Fergus R., García-Bernete, Ismael, Pereira-Santaella, Miguel, Alonso-Herrero, Almudena, Davies, Ric, Hunt, Leslie K., Roche, Patrick F., Shimizu, Taro
We present a systematic study of mid-infrared spectra of galaxies including star-forming galaxies and Active Galactic Nuclei observed with JWST MIRI-MRS and NIRSpec-IFU. We focus on the relative variations of the 3.3, 6.2, 7.7, 11.3, 12.7 and 17 micr
Externí odkaz:
http://arxiv.org/abs/2406.11415
Autor:
Donnan, F. R., García-Bernete, I., Rigopoulou, D., Pereira-Santaella, M., Roche, P. F., Alonso-Herrero, A.
We present an analysis of the combined NIRSpec and MIRI spectra of dusty galaxies between 1.5 - 28 $\mu$m restframe by implementing a differential extinction model, where the strength of extinction varies across the spectrum as different layers of th
Externí odkaz:
http://arxiv.org/abs/2402.17479
Autor:
García-Bernete, I., Alonso-Herrero, A., Rigopoulou, D., Pereira-Santaella, M., Shimizu, T., Davies, R., Donnan, F. R., Roche, P. F., González-Martín, O., Almeida, C. Ramos, Bellocchi, E., Boorman, P., Combes, F., Efstathiou, A., Esparza-Arredondo, D., García-Burillo, S., González-Alfonso, E., Hicks, E. K. S., Hönig, S., Labiano, A., Levenson, N. A., López-Rodríguez, E., Ricci, C., Packham, C., Rouan, D., Stalevski, M., Ward, M. J.
We use JWST/MIRI MRS spectroscopy of a sample of six local obscured type 1.9/2 active galactic nuclei (AGN) to compare their nuclear mid-IR absorption bands with the level of nuclear obscuration traced by X-rays. This study is the first to use sub-ar
Externí odkaz:
http://arxiv.org/abs/2310.09093
Autor:
González-Martín, Omaira, Almeida, Cristina Ramos, Fritz, Jacopo, Alonso-Herrero, Almudena, Hönig, Sebastian F., Roche, Patrick F., Esparza-Arredondo, Donaji, García-Bernete, Ismael, García-Burillo, Santiago, Osorio-Clavijo, Natalia, Reyes-Amador, Ulises, Stalevski, Marko, Victoria-Ceballos, César
Publikováno v:
A&A 676, A73 (2023)
Fits the infrared spectra from the nuclear regions of AGN can place constraints on the dust properties, distribution, and geometry by comparison with models. However, none of the currently available models fully describe the observations of AGN curre
Externí odkaz:
http://arxiv.org/abs/2305.11331
Autor:
Donnan, F. R., Rigopoulou, D., García-Bernete, I., Pereira-Santaella, M., Alonso-Herrero, A., Roche, P. F., Aalto, S., Hernán-Caballero, A., Spoon, H. W. W.
Publikováno v:
A&A 669, A87 (2023)
Context. Compact Obscured Nuclei (CONs) are an extreme phase of galaxy evolution where rapid supermassive black hole growth and$/$or compact star-forming activity is completely obscured by gas and dust. Aims. We investigate the properties of CONs in
Externí odkaz:
http://arxiv.org/abs/2211.09628
Autor:
Donnan, F. R., García-Bernete, I., Rigopoulou, D., Pereira-Santaella, M., Alonso-Herrero, A., Roche, P. F., Hernán-Caballero, A., Spoon, H. W. W.
Compact Obscured Nuclei (CONs) potentially hide extreme supermassive black hole (SMBH) growth behind large column densities of gas/dust. We present a spectroscopic analysis of the heavily obscured nucleus and the surrounding environment of the easter
Externí odkaz:
http://arxiv.org/abs/2210.04647
Autor:
García-Bernete, I., González-Martín, O., Almeida, C. Ramos, Alonso-Herrero, A., Martínez-Paredes, M., Ward, M. J., Roche, P. F., Acosta-Pulido, J. A., López-Rodríguez, E., Rigopoulou, D., Esparza-Arredondo, D.
Publikováno v:
A&A 667, A140 (2022)
We present a statistical analysis of the properties of the obscuring material around active galactic nuclei (AGN). This study represents the first of its kind for an ultra-hard X-ray (14-195keV; Swift/BAT) volume-limited (DL<40 Mpc) sample of 24 Seyf
Externí odkaz:
http://arxiv.org/abs/2210.03508
Autor:
Kerkeni, Boutheïna, García-Bernete, Ismael, Rigopoulou, Dimitra, Tew, David P., Roche, Patrick F., Clary, David C.
Publikováno v:
513, 2022, 3663
We extend the prediction of vibrational spectra to large sized polycyclic aromatic hydrocarbon (PAH) molecules comprising up to \sim 1500 carbon atoms by evaluating the efficiency of several computational chemistry methodologies. We employ classical
Externí odkaz:
http://arxiv.org/abs/2210.00955
Autor:
García-Bernete, I., Rigopoulou, D., Alonso-Herrero, A., Donnan, F. R., Roche, P. F., Pereira-Santaella, M., Labiano, A., de Arriba, L. Peralta, Izumi, T., Almeida, C. Ramos, Shimizu, T., Hönig, S., García-Burillo, S., Rosario, D. J., Ward, M. J., Bellocchi, E., Hicks, E. K. S., Fuller, L., Packham, C.
Publikováno v:
A&A 666, L5 (2022)
Polycyclic Aromatic Hydrocarbons (PAHs) are carbon-based molecules that are ubiquitous in a variety of astrophysical objects and environments. In this work, we use JWST/MIRI MRS spectroscopy of three Seyferts to compare their nuclear PAH emission wit
Externí odkaz:
http://arxiv.org/abs/2208.11620
Autor:
García-Bernete, I., Rigopoulou, D., Aalto, S., Spoon, H. W. W., Hernán-Caballero, A., Efstathiou, A., Roche, P. F., König, S.
Publikováno v:
A&A 663, A46 (2022)
Compact obscured nuclei (CONs) are mainly found in local U/LIRGs. In the local Universe, these sources are generally selected through the detection of the HCN-vib (3-2) emission line at submillimetre wavelengths. In this work, we present a diagnostic
Externí odkaz:
http://arxiv.org/abs/2203.14795