Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Ivan Valtchanov"'
Autor:
Sam F Sweere, Ivan Valtchanov, Maggie Lieu, Antonia Vojtekova, Eva Verdugo, Maria Santos-Lleo, Florian Pacaud, Alexia Briassouli, Daniel Cámpora Pérez
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 517(3), 4054-4069. Oxford University Press
The field of artificial intelligence based image enhancement has been rapidly evolving over the last few years and is able to produce impressive results on non-astronomical images. In this work, we present the first application of Machine Learning ba
Autor:
Sunayana Bhargava, Christian Garrel, Elias Koulouridis, Marguerite Pierre, Ivan Valtchanov, Nicolas Cerardi, Ben J. Maughan, Michel Aguena, Christophe Benoist, Cale Baguley, Miriam E. Ramos-Ceja, Christophe Adami, Lucio Chiappetti, Cristian Vignali, Jon P. Willis
X-ray observations of galaxy clusters are impacted by the presence of active galactic nuclei (AGNs) in a manner that is challenging to quantify, leading to biases in the detection and measurement of cluster properties for both astrophysics and cosmol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2118e6c99b2a8aff9e05a2ee250e0687
Autor:
Daichi Akino, Dominique Eckert, Nobuhiro Okabe, Mauro Sereno, Keiichi Umetsu, Masamune Oguri, Fabio Gastaldello, I-Non Chiu, Stefano Ettori, August E Evrard, Arya Farahi, Ben Maughan, Marguerite Pierre, Marina Ricci, Ivan Valtchanov, Ian McCarthy, Sean McGee, Satoshi Miyazaki, Atsushi J Nishizawa, Masayuki Tanaka
Publikováno v:
Publ.Astron.Soc.Jap.
Publ.Astron.Soc.Jap., 2022, 74 (1), pp.175-208-208. ⟨10.1093/pasj/psab115⟩
Akino, D, Eckert, D, Okabe, N, Sereno, M, Umetsu, K, Oguri, M, Gastaldello, F, Chiu, I-N, Ettori, S, Evrard, A E, Farahi, A, Maughan, B, Pierre, M, Ricci, M, Valtchanov, I, Mccarthy, I, Mcgee, S, Miyazaki, S, Nishizawa, A J & Tanak, M 2022, ' HSC-XXL : Baryon budget of the 136 XXL Groups and Clusters ', Publications of the Astronomical Society of japan, vol. 74, no. 1, pp. 175–208 . https://doi.org/10.1093/pasj/psab115
Publ.Astron.Soc.Jap., 2022, 74 (1), pp.175-208-208. ⟨10.1093/pasj/psab115⟩
Akino, D, Eckert, D, Okabe, N, Sereno, M, Umetsu, K, Oguri, M, Gastaldello, F, Chiu, I-N, Ettori, S, Evrard, A E, Farahi, A, Maughan, B, Pierre, M, Ricci, M, Valtchanov, I, Mccarthy, I, Mcgee, S, Miyazaki, S, Nishizawa, A J & Tanak, M 2022, ' HSC-XXL : Baryon budget of the 136 XXL Groups and Clusters ', Publications of the Astronomical Society of japan, vol. 74, no. 1, pp. 175–208 . https://doi.org/10.1093/pasj/psab115
We present our determination of the baryon budget for an X-ray-selected XXL sample of 136 galaxy groups and clusters spanning nearly two orders of magnitude in mass ($M_{500}\sim 10^{13}-10^{15}M_\odot$) and the redshift range $0< z < 1$. Our joint a
Autor:
Laurence O'Rourke, Thomas G. Müller, Nicolas Biver, Dominique Bockelée-Morvan, Sunao Hasegawa, Ivan Valtchanov, Michael Küppers, Sonia Fornasier, Humberto Campins, Hideaki Fujiwara, David Teyessier, Tanya Lim
Previous research on Asteroids (24) Themis and (65) Cybele have shown the presence of an absorption feature at 3.1 μm reported to be directly linked to surface water ice. We searched for water vapor escaping from these asteroids with the Herschel Sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e74070809ca363e3e14ca320d5cde36a
https://doi.org/10.5194/epsc2021-796
https://doi.org/10.5194/epsc2021-796
Autor:
E. Racero, Bruno Merín, Deborah Baines, J. González Núñez, P. Rodriguez, M. López-Caniego, Sebastien Besse, I. de la Calle, Elena Puga, Fabrizio Giordano, Th. Müller, Michael Küppers, N. Álvarez Crespo, Benoit Carry, S. Kruk, Max Mahlke, B. López-Martí, M. Wrangblad, Ivan Valtchanov, Henrik Norman, J. Berthier
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2022, 659, ⟨10.1051/0004-6361/202140899⟩
Astronomy and Astrophysics-A&A, 2022, 659, ⟨10.1051/0004-6361/202140899⟩
We introduce in this work the Solar System Object Search Service (SSOSS), a service aimed at providing the scientific community with a search service for all potential detections of SSOs among the ESA astronomy archival imaging data. We illustrate it
Autor:
Ian Smail, Miroslava Dessauges-Zavadsky, Eiichi Egami, Pablo G. Pérez-González, Kimihiko Nakajima, Francoise Combes, Gregory Walth, T. D. Rawle, Scott Chapman, Ivan Valtchanov, Fengwu Sun, Alexis Finoguenov, Harald Ebeling, Antonio Cava, Frédéric Boone, Bruno Altieri, Paul van der Werf, R. Pello, Johan Richard, B. Clement, Daniel Schaerer, Wiphu Rujopakarn
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, American Astronomical Society, 2021, 908 (2), pp.192. ⟨10.3847/1538-4357/abd6e4⟩
The Astrophysical Journal, 908(2)
The Astrophysical Journal, 2021, Vol.908(2), pp.192 [Peer Reviewed Journal]
DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial
Universitat Pompeu Fabra
The Astrophysical Journal, American Astronomical Society, 2021, 908 (2), pp.192. ⟨10.3847/1538-4357/abd6e4⟩
The Astrophysical Journal, 908(2)
The Astrophysical Journal, 2021, Vol.908(2), pp.192 [Peer Reviewed Journal]
DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial
Universitat Pompeu Fabra
We present an ALMA 1.3 mm (Band 6) continuum survey of lensed submillimeter galaxies (SMGs) at $z=1.0\sim3.2$ with an angular resolution of $\sim0.2$". These galaxies were uncovered by the Herschel Lensing Survey (HLS), and feature exceptionally brig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b0b74cc82dd7f35211d55ba8bc6b17e
https://hdl.handle.net/1887/3264046
https://hdl.handle.net/1887/3264046
Autor:
Hiroyuki Ikeda, Glenn J. White, Helen K. Kim, Chris Pearson, L. Barrufet, M. Malkan, M. C. Campos-Varillas, Luca Conversi, Ivano Baronchelli, Takamitsu Miyaji, Yoshiki Toba, Toshinobu Takagi, Nagisa Oi, H. Matsuhara, Tomotsugu Goto, S. Serjeant, Ivan Valtchanov, Seong Jin Kim, Katarzyna Małek
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2020, 641, ⟨10.1051/0004-6361/202037838⟩
Astronomy and Astrophysics-A&A, 2020, 641, ⟨10.1051/0004-6361/202037838⟩
Context. Dusty high-z galaxies are extreme objects with high star formation rates (SFRs) and luminosities. Characterising the properties of this population and analysing their evolution over cosmic time is key to understanding galaxy evolution in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7e239cb3fe108364bd4deb368fb32db
http://arxiv.org/abs/2007.07992
http://arxiv.org/abs/2007.07992
Autor:
Glenn J. White, David L. Clements, Chris Pearson, Ryan Cheale, R. Hopwood, Denis Burgarella, Stephen Serjeant, Ivan Valtchanov, Hideo Matsuhara, Bruno Altieri
Publikováno v:
Publications of The Korean Astronomical Society. 32:219-223
The preliminary data reduction, analysis and first results from the Herschel survey of the AKARI NEP field are presented. Herschel SPIRE observations of the NEP-Wide region and PACS observations of the NEP-Deep region have yielded galaxy catalogues o
Autor:
Locke D. Spencer, Chris Pearson, Trevor Fulton, Ivan Valtchanov, R. Hopwood, T. Lim, N. Marchili, David A. Naylor, Gibion Makiwa, Jeremy Zaretski, Nanyao Lu, Edward Polehampton, Matthew Joseph Griffin, P. Imhof
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 464:3331-3342
The SPIRE Fourier Transform Spectrometer on board the Herschel Space Observatory had two standard spectral resolution modes for science observations: high resolution (HR) and low resolution (LR), which could also be performed in sequence (H+LR). A co
The distribution of the normalised parallaxes and proper motions of Gaia DR2 quasars follows nicely a Gaussian distribution with standard deviation close to 1. One would naively expect that the subset of lensed QSOs has the same property. We propose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0259a339ec11c7ce20837b9656ed9feb