Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Lietzen, H."'
Autor:
Damsted, S., Finoguenov, A., Lietzen, H., Mamon, G. A., Comparat, J., Tempel, E., Dmitrieva, I., Clerc, N., Collins, C., Gozaliasl, G., Eckert, D.
We revisit the picture of X-ray emission of groups through the study of systematic differences in the optical properties of groups with and without X-ray emission and study the effect of large-scale density field on scaling relations. We present the
Externí odkaz:
http://arxiv.org/abs/2403.17055
Autor:
Ferragamo, A., Barrena, R., Rubiño-Martín, J. A., Aguado-Barahona, A., Streblyanska, A., Tramonte, D., Génova-Santos, R. T., Hempel, A., Lietzen, H.
Publikováno v:
A&A 655, A115 (2021)
We present the velocity dispersion and dynamical mass estimates for 270 galaxy clusters included in the first Planck Sunyaev-Zeldovich (SZ) source catalogue, the PSZ1. Part of the results presented here were achieved during a two-year observational p
Externí odkaz:
http://arxiv.org/abs/2109.04967
Autor:
Barrena, R., Ferragamo, A., Rubiño-Martín, J. A., Streblyanska, A., Aguado-Barahona, A., Tramonte, D., Génova-Santos, R. T., Hempel, A., Lietzen, H., Aghanim, N., Böhringer, H., Chon, G., Dahle, H., Douspis, M., Lasenby, A. N., Mazzotta, P., Melin, J. B., Pointecouteau, E., Pratt, G. W., Rossetti, M.
Publikováno v:
A&A 638, A146 (2020)
We report new galaxy clusters previously unknown included in the PSZ1 catalogue. The results here presented have been achieved during the second year of a 2-year observational programme, the ITP13, developed at the Roque de los Muchachos Observatory
Externí odkaz:
http://arxiv.org/abs/2004.07913
Autor:
Aguado-Barahona, A., Barrena, R., Streblyanska, A., Ferragamo, A., Rubino-Martin, J. A., Tramonte, D., Lietzen, H.
Publikováno v:
A&A 631, A148 (2019)
We present the second and last year of observations of our optical follow-up programme 128-MULTIPLE-16/15B (LP15 )at Roque de los Muchachos Observatory (La Palma), which has been developed with the aim of validating all the unidentified PSZ2 sources
Externí odkaz:
http://arxiv.org/abs/1909.06235
Autor:
Streblyanska, A., Aguado-Barahona, A., Ferragamo, A., Barrena, R., Rubino-Martin, J. A., Tramonte, D., Genova-Santos, R. T., Lietzen, H.
Publikováno v:
A&A 628, A13 (2019)
Using telescopes at the Canary Island observatories, we conducted the long-term observational programme 128-MULTIPLE-16/15B (LP15), a large and complete optical follow-up campaign of all the unidentified PSZ2 sources in the northern sky (Dec>-15 deg)
Externí odkaz:
http://arxiv.org/abs/1905.13661
Autor:
Streblyanska, A., Barrena, R., Rubino-Martin, J. A., van der Burg, R. F. J., Aghanim, N., Aguado-Barahona, A., Ferragamo, A., Lietzen, H.
Publikováno v:
A&A 617, A71 (2018)
The Planck catalogues of SZ sources, PSZ1 and PSZ2, are the largest catalogues of galaxy clusters selected through their SZ signature in the full sky. In 2013, we started a long-term observational program at Canary Island observatories with the aim o
Externí odkaz:
http://arxiv.org/abs/1804.01356
Autor:
Barrena, R., Streblyanska, A., Ferragamo, A., Rubino-Martin, J. A., Aguado-Barahona, A., Tramonte, D., Genova-Santos, R. T., Hempel, A., Lietzen, H., Aghanim, N., Arnaud, M., Bohringer, H., Chon, G., Democles, J., Dahle, H., Douspis, M., Lasenby, A. N., Mazzotta, P., Melin, J. B., Pointecouteau, E., Pratt, G. W., Rossetti, M., van der Burg, R. F. J.
Publikováno v:
A&A 616, A42 (2018)
We identify new clusters and characterize previously unknown Planck Sunyaev-Zeldovich (SZ) sources from the first Planck catalogue of SZ sources (PSZ1). The results presented here correspond to an optical follow-up observational programme developed d
Externí odkaz:
http://arxiv.org/abs/1803.05764
Publikováno v:
A&A 590, A29 (2016)
To understand the role of the environment in galaxy formation, evolution, and present-day properties, it is essential to study the multi-frequency behavior of different galaxy populations under various environmental conditions. We crossmatch the SDSS
Externí odkaz:
http://arxiv.org/abs/1603.01773
Autor:
Lietzen, H., Tempel, E., Liivamägi, L. J., Montero-Dorta, A., Einasto, M., Streblyanska, A., Maraston, C., Rubiño-Martín, J. A., Saar, E.
Publikováno v:
A&A 588, L4 (2016)
Superclusters are the largest relatively isolated systems in the cosmic web. Using the SDSS BOSS survey we search for the largest superclusters in the redshift range $0.43
Externí odkaz:
http://arxiv.org/abs/1602.08498
Autor:
Vallely, Patrick, Moreno-Raya, M. E., Baron, E., Ruiz-Lapuente, Pilar, Dominguez, I., Galbany, Lluis, Hernandez, J. I. Gonzalez, Mendez, J., Hamuy, M., Lopez-Sanchez, A. R., Catalan, S., Cooke, E., Farina, C., Genova-Santos, R., Karjalainen, R., Lietzen, H., McCormac, J., Riddick, F., Rubino-Martin, J. A., Skillen, I., Tudor, V., Vaduvescu, O.
We analyze a time series of optical spectra of SN~2014J from almost two weeks prior to maximum to nearly four months after maximum. We perform our analysis using the SYNOW code, which is well suited to track the distribution of the ions with velocity
Externí odkaz:
http://arxiv.org/abs/1512.02608