S
S. Berta
Researcher at Max Planck Society
Publications - 102
Citations - 7600
S. Berta is an academic researcher from Max Planck Society. The author has contributed to research in topics: Galaxy & Redshift. The author has an hindex of 43, co-authored 102 publications receiving 6909 citations. Previous affiliations of S. Berta include University of Padua & University of California, San Diego.
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Journal ArticleDOI
Relativistic supernova 2009bb exploded close to an atomic gas cloud
Michał J. Michałowski,Gianfranco Gentile,Thomas Krühler,Hanindyo Kuncarayakti,Peter Kamphuis,Jens Hjorth,S. Berta,Valerio D'Elia,J. Elliott,Lluís Galbany,Jochen Greiner,Leslie K. Hunt,M. P. Koprowski,E. Le Floc'h,A. Nicuesa Guelbenzu,Eliana Palazzi,J. Juul Rasmussen,Andrea Rossi,Sandra Savaglio,A. de Ugarte Postigo,P. van der Werf,S. D. Vergani +21 more
TL;DR: In this paper, the atomic gas properties of a relativistic supernovae (SNe) host are provided and the first time resolved 21 cm-hydrogen-line (H I) information is provided for a host of an SNe of any type in the context of the position.
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Compton Thick AGN in the XMM-COSMOS survey
Giorgio Lanzuisi,Piero Ranalli,I. Georgantopoulos,Antonis Georgakakis,Ivan Delvecchio,Ivan Delvecchio,T. Akylas,S. Berta,Angela Bongiorno,Marcella Brusa,Marcella Brusa,Nico Cappelluti,Francesca Civano,Andrea Comastri,Roberto Gilli,Carlotta Gruppioni,Günther Hasinger,Kazushi Iwasawa,Anton M. Koekemoer,Elisabeta Lusso,S. Marchesi,S. Marchesi,V. Mainieri,Andrea Merloni,M. Mignoli,Enrico Piconcelli,Francesca Pozzi,Francesca Pozzi,David J. Rosario,Mara Salvato,John D. Silverman,Benny Trakhtenbrot,Cristian Vignali,Cristian Vignali,G. Zamorani +34 more
TL;DR: In this article, the authors proposed a simple absorbed two power law model to the XMM-COSMOS survey data and confirmed the presence of heavily obscured, Compton Thick (CT, NH>10−24 cm−2) AGN in 80% of the sources using deeper Chandra data and more complex models.
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The role of massive halos in the Star Formation History of the Universe
Paola Popesso,Andrea Biviano,Alexis Finoguenov,D. Wilman,Mara Salvato,Benjamin Magnelli,Carlotta Gruppioni,Francesca Pozzi,Giulia Rodighiero,F. Ziparo,S. Berta,David Elbaz,Mark Dickinson,Dieter Lutz,Bruno Altieri,Herve Aussel,Andrea Cimatti,Dario Fadda,Olivier Ilbert,E. Le Floc'h,Raanan Nordon,Albrecht Poglitsch,Shy Genel,Chun Xu +23 more
TL;DR: The contribution of galaxies in halos of different masses to the Cosmic Star Formation History (CSFH) of the Universe is investigated in this paper, where the authors investigate if the very same process of assembly and growth of structures is one of the major drivers of the observed decline.
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The first Herschel view of the mass-SFR link in high-z galaxies
Giulia Rodighiero,Andrea Cimatti,Carlotta Gruppioni,Paola Popesso,Paola Andreani,Paola Andreani,Bruno Altieri,Herve Aussel,S. Berta,Ángel Bongiovanni,Drew Brisbin,Antonio Cava,J. Cepa,Emanuele Daddi,H. Dominguez-Sanchez,David Elbaz,Adriano Fontana,N. M. Förster Schreiber,Alberto Franceschini,Reinhard Genzel,Andrea Grazian,Dieter Lutz,Georgios E. Magdis,Manuela Magliocchetti,Benjamin Magnelli,Roberto Maiolino,C. Mancini,Raanan Nordon,A. M. Pérez García,Albrecht Poglitsch,Paola Santini,Miguel Sánchez-Portal,Francesca Pozzi,L. Riguccini,Amélie Saintonge,Lijing Shao,E. Sturm,Linda J. Tacconi,Ivan Valtchanov,M. Wetzstein,E. Wieprecht +40 more
TL;DR: In this article, the authors exploit deep observations of the GOODS-N field taken with PACS, on board of Herschel, as part of the PEP guaranteed time, to study the link between star formation and stellar mass in galaxies to z~2.
Journal ArticleDOI
Panchromatic spectral energy distributions of Herschel sources
S. Berta,Dieter Lutz,Paola Santini,Stijn Wuyts,David J. Rosario,Drew Brisbin,A. Cooray,Alberto Franceschini,Carlotta Gruppioni,Evanthia Hatziminaoglou,Ho Seong Hwang,E. Le Floc'h,Benjamin Magnelli,Raanan Nordon,S. J. Oliver,M. J. Page,Paola Popesso,Lucia Pozzetti,Francesca Pozzi,L. Riguccini,Giulia Rodighiero,Isaac Roseboom,Douglas Scott,M. Symeonidis,Ivan Valtchanov,Marco P. Viero,Lian-Tao Wang +26 more
Abstract: (abridged) Far-infrared Herschel photometry from the PEP and HerMES programs is combined with ancillary datasets in the GOODS-N, GOODS-S, and COSMOS fields. Based on this rich dataset, we reproduce the restframe UV to FIR ten-colors distribution of galaxies using a superposition of multi-variate Gaussian modes. The median SED of each mode is then fitted with a modified version of the MAGPHYS code that combines stellar light, emission from dust heated by stars and a possible warm dust contribution heated by an AGN. The defined Gaussian grouping is also used to identify rare sources. The zoology of outliers includes Herschel-detected ellipticals, very blue z~1 Ly-break galaxies, quiescent spirals, and torus-dominated AGN with star formation. Out of these groups and outliers, a new template library is assembled, consisting of 32 SEDs describing the intrinsic scatter in the restframe UV-to-submm colors of infrared galaxies. This library is tested against L(IR) estimates with and without Herschel data included, and compared to eight other popular methods often adopted in the literature. When implementing Herschel photometry, these approaches produce L(IR) values consistent with each other within a median absolute deviation of 10-20%, the scatter being dominated more by fine tuning of the codes, rather than by the choice of SED templates. Finally, the library is used to classify 24 micron detected sources in PEP GOODS fields. AGN appear to be distributed in the stellar mass (M*) vs. star formation rate (SFR) space along with all other galaxies, regardless of the amount of infrared luminosity they are powering, with the tendency to lie on the high SFR side of the "main sequence". The incidence of warmer star-forming sources grows for objects with higher specific star formation rates (sSFR), and they tend to populate the "off-sequence" region of the M*-SFR-z space.