Zobrazeno 1 - 10
of 2 644
pro vyhledávání: '"Becker, G. A."'
Autor:
Mazzucchelli, C., Bischetti, M., D'Odorico, V., Feruglio, C., Schindler, J. -T., Onoue, M., Bañados, E., Becker, G. D., Bian, F., Carniani, S., Decarli, R., Eilers, A. -C., Farina, E. P., Gallerani, S., Lai, S., Meyer, R. A., Rojas-Ruiz, S., Satyavolu, S., Venemans, B. P., Wang, F., Yang, J., Zhu, Y.
Publikováno v:
A&A 676, A71 (2023)
We present bolometric luminosities, black hole masses and Eddington ratios for 42 luminous quasars at z>6 using high signal-to-noise ratio VLT/X-Shooter spectra, acquired in the enlarged ESO Large Programme XQR-30. In particular, we derive bolometric
Externí odkaz:
http://arxiv.org/abs/2306.16474
Autor:
D'Odorico, Valentina, Banados, E., Becker, G. D., Bischetti, M., Bosman, S. E. I., Cupani, G., Davies, R., Farina, E. P., Ferrara, A., Feruglio, C., Mazzucchelli, C., Ryan-Weber, E., Schindler, J. -T., Sodini, A., Venemans, B. P., Walter, F., Chen, H., Lai, S., Zhu, Y., Bian, F., Campo, S., Carniani, S., Cristiani, S., Davies, F., Decarli, R., Drake, A., Eilers, A. -C., Fan, X., Gaikwad, P., Gallerani, S., Greig, B., Haehnelt, M. G., Hennawi, J., Keating, L., Kulkarni, G., Mesinger, A., Meyer, R. A., Neeleman, M., Onoue, M., Pallottini, A., Qin, Y., Rojas-Ruiz, S., Satyavolu, S., Sebastian, A., Tripodi, R., Wang, F., Wolfson, M., Yang, J., Zanchettin, M. V.
Publikováno v:
MNRAS, Volume 523, Issue 1, pp.1399-1420 (2023)
The final phase of the reionization process can be probed by rest-frame UV absorption spectra of quasars at z>6, shedding light on the properties of the diffuse intergalactic medium within the first Gyr of the Universe. The ESO Large Programme "XQR-3
Externí odkaz:
http://arxiv.org/abs/2305.05053
Autor:
Saccardi, A., Salvadori, S., D'Odorico, V., Cupani, G., Fumagalli, M., Berg, T. A. M., Becker, G. D., Ellison, S., Lopez, S.
The first stars were born from chemically pristine gas. They were likely massive, and thus they rapidly exploded as supernovae, enriching the surrounding gas with the first heavy elements. In the Local Group, the chemical signatures of the first stel
Externí odkaz:
http://arxiv.org/abs/2305.02346
Autor:
Tourret, D., Klemm-Toole, J., Castellanos, A. Eres, Rodgers, B., Becker, G., Saville, A., Ellyson, B., Johnson, C., Milligan, B., Copley, J., Ochoa, R., Polonsky, A., Pusch, K., Haines, M. P., Fezzaa, K., Sun, T., Clarke, K., Babu, S., Pollock, T., Karma, A., Clarke, A.
Publikováno v:
Acta Materialia 250 (2023) 118858
Understanding rapid solidification behavior at velocities relevant to additive manufacturing (AM) is critical to controlling microstructure selection. Although in-situ visualization of solidification dynamics is now possible, systematic studies under
Externí odkaz:
http://arxiv.org/abs/2303.09137
Autor:
Gallés, P., Takats, K., Hernández-Cabronero, M., Berga, D., Pega, L., Riordan-Chen, L., Garcia, C., Becker, G., Garriga, A., Bukva, A., Serra-Sagristà, J., Vilaseca, D., Marín, J.
IQUAFLOW is a new image quality framework that provides a set of tools to assess image quality. The user can add custom metrics that can be easily integrated. Furthermore, iquaflow allows to measure quality by using the performance of AI models train
Externí odkaz:
http://arxiv.org/abs/2210.13269
Autor:
Bischetti, M., Feruglio, C., D'Odorico, V., Arav, N., Bañados, E., Becker, G., Bosman, S. E. I., Carniani, S., Cristiani, S., Cupani, G., Davies, R., Eilers, A. C., Farina, E. P., Ferrara, A., Maiolino, R., Mazzucchelli, C., Mesinger, A., Meyer, R., Onoue, M., Piconcelli, E., Ryan-Weber, E., Schindler, J-T., Wang, F., Yang, J., Zhu, Y., Fiore, F.
Publikováno v:
Nature, 605, 244-247 (2022)
Luminous quasars powered by accretion onto billion solar mass black holes already exist at the epoch of Reionisation, when the Universe was 0.5-1 Gyr old. These objects likely reside in over-dense regions of the Universe, and will grow to form today'
Externí odkaz:
http://arxiv.org/abs/2205.00021
Autor:
D'Odorico, V., Finlator, K., Cristiani, S., Cupani, G., Perrotta, S., Calura, F., Cènturion, M., Becker, G., Berg, T. A. M., Lopez, S., Ellison, S., Pomante, E.
We investigate the abundance and distribution of metals in the high-redshift intergalactic medium and circum-galactic medium through the analysis of a sample of almost 600 SiIV absorption lines detected in high and intermediate resolution spectra of
Externí odkaz:
http://arxiv.org/abs/2202.12206
Autor:
Bundy, K., Westfall, K., MacDonald, N., Kupke, R., Savage, M., Poppett, C., Alabi, A., Becker, G., Burchett, J., Capak, P., Coil, A., Cooper, M., Cowley, D., Deich, W., Dillon, D., Edelstein, J., Guhathakurta, P., Hennawi, J., Kassis, M., Lee, K. -G., Masters, D., Miller, T., Newman, J., O'Meara, J., Prochaska, J. X., Rau, M., Rhodes, J., Rich, R. M., Rockosi, C., Romanowsky, A., Schafer, C., Schlegel, D., Shapley, A., Siana, B., Ting, Y. -S., Weisz, D., White, M., Williams, B., Wilson, G., Wilson, M., Yan, R.
High-multiplex and deep spectroscopic follow-up of upcoming panoramic deep-imaging surveys like LSST, Euclid, and WFIRST is a widely recognized and increasingly urgent necessity. No current or planned facility at a U.S. observatory meets the sensitiv
Externí odkaz:
http://arxiv.org/abs/1907.07195
Autor:
Reed, S. L., Banerji, M., Becker, G. D., Hewett, P. C., Martini, P., McMahon, R. G., Pons, E., Rauch, M., Abbott, T. M. C., Allam, S., Annis, J., Avila, S., Bertin, E., Brooks, D., Buckley-Geer, E., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Castander, F. J., Cunha, C. E., D'Andrea, C. B., da Costa, L. N., De Vicente, J., Desai, S., Diehl, H. T., Doel, P., Evrard, A. E., Flaugher, B., Frieman, J., Garcia-Bellido, J., Gaztanaga, E., Gruen, D., Gschwend, J., Gutierrez, G., Hollowood, D. L., Honscheid, K., Hoyle, B., James, D. J., Kuehn, K., Lahav, O., Lima, M., Maia, M. A. G., Marshall, J. L., Miquel, R., Ogando, R. L. C., Plazas, A. A., Roodman, A., Sanchez, E., Scarpine, V., Schubnell, M., Serrano, S., Sevilla-Noarbe, I., Smith, M., Smith, R. C., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Thomas, D., Tucker, D. L., Vikram, V.
We report the results from a search for z > 6.5 quasars using the Dark Energy Survey (DES) Year 3 dataset combined with the VISTA Hemisphere Survey (VHS) and WISE All-Sky Survey. Our photometric selection method is shown to be highly efficient in ide
Externí odkaz:
http://arxiv.org/abs/1901.07456
Autor:
Perrotta, S., D'Odorico, V., Hamann, F., Cristiani, S., Prochaska, J. X., Ellison, S. L., Lopez, S., Cupani, G., Becker, G., Berg, T. A. M., Christensen, L., Denney, K. D., Worseck, G.
We investigate the NV absorption signal along the line of sight of background quasars, in order to test the robustness of the use of this ion as criterion to select intrinsic (i.e. physically related to the quasar host galaxy) narrow absorption lines
Externí odkaz:
http://arxiv.org/abs/1808.09995