Zobrazeno 1 - 10
of 82
pro vyhledávání: '"Nanni, Riccardo"'
Autor:
Temple, Matthew J., Rankine, Amy L., Banerji, Manda, Hennawi, Joseph F., Hewett, Paul C., Matthews, James H., Nanni, Riccardo, Ricci, Claudio, Richards, Gordon T.
Publikováno v:
MNRAS 532, 424-437 (2024)
Understanding the links between different phases of outflows from active galactic nuclei is a key goal in extragalactic astrophysics. Here we compare [OIII] $\lambda\lambda$4960,5008 outflow signatures in quasars with and without Broad Absorption Lin
Externí odkaz:
http://arxiv.org/abs/2406.11968
Autor:
Onorato, Silvia, Hennawi, Joseph F., Schindler, Jan-Torge, Yang, Jinyi, Wang, Feige, Barth, Aaron J., Bañados, Eduardo, Eilers, Anna-Christina, Bosman, Sarah E. I., Davies, Frederick B., Venemans, Bram P., Mazzucchelli, Chiara, Belladitta, Silvia, Vito, Fabio, Farina, Emanuele Paolo, Andika, Irham T., Fan, Xiaohui, Walter, Fabian, Decarli, Roberto, Onoue, Masafusa, Nanni, Riccardo
We present optical and near-infrared (NIR) spectroscopic observations for a sample of $45$ quasars at $6.50 < z \leq 7.64$ with absolute magnitudes at $1450$ {\AA} in the range $-28.82 \leq M_{1450} \leq -24.13$ and their composite spectrum. The medi
Externí odkaz:
http://arxiv.org/abs/2406.07612
Autor:
Banados, Eduardo, Schindler, Jan-Torge, Venemans, Bram P., Connor, Thomas, Decarli, Roberto, Farina, Emanuele Paolo, Mazzucchelli, Chiara, Meyer, Romain A., Stern, Daniel, Walter, Fabian, Fan, Xiaohui, Hennawi, Joseph F., Khusanova, Yana, Morrell, Nidia, Nanni, Riccardo, Noirot, Gael, Pensabene, Antonio, Rix, Hans-Walter, Simon, Joseph, Kleijn, Gijs A. Verdoes, Xie, Zhang-Liang, Yang, Da-Ming, Connor, Andrew
The identification of bright quasars at z>6 enables detailed studies of supermassive black holes, massive galaxies, structure formation, and the state of the intergalactic medium within the first billion years after the Big Bang. We present the spect
Externí odkaz:
http://arxiv.org/abs/2212.04452
Autor:
Schindler, Jan-Torge, Bañados, Eduardo, Connor, Thomas, Decarli, Roberto, Fan, Xiaohui, Farina, Emanuele Paolo, Mazzucchelli, Chiara, Nanni, Riccardo, Rix, Hans-Walter, Stern, Daniel, Venemans, Bram P., Walter, Fabian
We present the $z\!\approx\!6$ type-1 quasar luminosity function (QLF) based on the Pan-STARRS1 (PS1) quasar survey. The PS1 sample includes 125 quasars at $z\approx5.7-6.2$ with $-28\lesssim M_{1450}\lesssim-25$. Complemented by 48 fainter quasars f
Externí odkaz:
http://arxiv.org/abs/2212.04179
Autor:
Yang, Da-Ming, Schindler, Jan-Torge, Nanni, Riccardo, Hennawi, Joseph F., Bañados, Eduardo, Fan, Xiaohui, Gloudemans, Anniek, Rottgering, Huub, Wang, Feige, Yang, Jinyi
We present the high-$z$ quasar candidate archive (HzQCA), summarizing the spectroscopic observations of 174 $z\gtrsim5$ quasar candidates using Keck/LRIS, Keck/MOSFIRE, and Keck/NIRES. We identify 7 candidates as $z\sim 6$ quasars 3 of them newly rep
Externí odkaz:
http://arxiv.org/abs/2211.16996
Autor:
Vito, Fabio, Mignoli, Marco, Gilli, Roberto, Brandt, William Nielsen, Shemmer, Ohad, Bauer, Franz Erik, Bisogni, Susanna, Luo, Bin, Marchesi, Stefano, Nanni, Riccardo, Zamorani, Gianni, Comastri, Andrea, Cusano, Felice, Gallerani, Simona, Vignali, Cristian, Lanzuisi, Giorgio
Publikováno v:
A&A 663, A159 (2022)
Explaining the existence of $\gtrsim10^8\,\mathrm{M_\odot}$ SMBHs at $z>6$ is a persistent challenge to modern astrophysics. Multi-wavelength observations of $z\gtrsim6$ QSOs reveal that, on average, their accretion physics is similar to that of thei
Externí odkaz:
http://arxiv.org/abs/2206.05303
Autor:
Yang, Jinyi, Fan, Xiaohui, Wang, Feige, Lanzuisi, Giorgio, Nanni, Riccardo, Cappi, Massimo, Chartas, George, Dadina, Mauro, Decarli, Roberto, Jin, Xiangyu, Keeton, Charles R., Venemans, Bram P., Walter, Fabian, Wang, Ran, Wu, Xue-Bing, Yue, Minghao, Zabludoff, Ann
We report X-ray observations of the most distant known gravitationally lensed quasar, J0439+1634 at $z=6.52$, which is also a broad absorption line (BAL) quasar, using the XMM-Newton Observatory. With a 130 ks exposure, the quasar is significantly de
Externí odkaz:
http://arxiv.org/abs/2112.10785
Autor:
Nanni, Riccardo, Hennawi, Joseph F., Wang, Feige, Yang, Jinyi, Schindler, Jan-Torge, Fan, Xiaohui
We introduce a probabilistic approach to select 6
Externí odkaz:
http://arxiv.org/abs/2111.03073
Autor:
Yang, Jinyi, Wang, Feige, Fan, Xiaohui, Barth, Aaron J., Hennawi, Joseph F., Nanni, Riccardo, Bian, Fuyan, Davies, Frederick B., Farina, Emanuele P., Schindler, Jan-Torge, Banados, Eduardo, Decarli, Roberto, Eilers, Anna-Christina, Green, Richard, Guo, Hengxiao, Jiang, Linhua, Li, Jiang-Tao, Venemans, Bram, Walter, Fabian, Wu, Xue-Bing, Yue, Minghao
We report the results of near-infrared spectroscopic observations of 37 quasars in the redshift range $6.3< z\le7.64$, including 32 quasars at $z>6.5$, forming the largest quasar near-infrared spectral sample at this redshift. The spectra, taken with
Externí odkaz:
http://arxiv.org/abs/2109.13942
Autor:
Marchesi, Stefano, Mignoli, Marco, Gilli, Roberto, Peca, Alessandro, Bolzonella, Micol, Nanni, Riccardo, Annunziatella, Marianna, Balmaverde, Barbara, Brusa, Marcella, Calura, Francesco, Cassarà, Letizia P., Chiaberge, Marco, Comastri, Andrea, Cusano, Felice, D'Amato, Quirino, Iwasawa, Kazushi, Lanzuisi, Giorgio, Marchesini, Danilo, Morishita, Takahiro, Prandoni, Isabella, Rossi, Andrea, Tozzi, Paolo, Vignali, Cristian, Vito, Fabio, Zamorani, Giovanni, Norman, Colin
Publikováno v:
A&A 656, A117 (2021)
We publicly release the spectroscopic and photometric redshift catalog of the sources detected with Chandra in the field of the $z$=6.3 quasar SDSS J1030+0525. This is currently the fifth deepest X-ray field, and reaches a 0.5-2 keV flux limit $f_{\r
Externí odkaz:
http://arxiv.org/abs/2109.08162