Zobrazeno 1 - 10
of 136
pro vyhledávání: '"Valtchanov, Ivan"'
Autor:
Cedrés, Bernabé, De Daniloff, Simon B., Bongiovanni, Ángel, Sánchez-Portal, Miguel, Cerviño, Miguel, Pérez-Martínez, Ricardo, Pérez-García, Ana María, Cepa, Jordi, Lara-López, Maritza A., González-Otero, Mauro, Castillo-Fraile, Manuel, González-Serrano, José Ignacio, Negrete, Castalia Alenka, Padilla-Torres, Camen P., Pintos-Castro, Irene, Povic, Mirjana, Alfaro1, Emilio, Beyoro-Amado, Zeleke, Cruz-González, Irene, de Diego, José A., Martínez, Rocío Navarro, Mancillas, Brisa, Rodríguez, Mónica I., Valtchanov, Iván
In this paper, we revisit the data for the galaxy cluster ZwCl 0024.0+1652 provided by the GLACE survey and study the mass--metallicity function and its relationship with the environment. Here we describe an alternative way to reduce the data from OS
Externí odkaz:
http://arxiv.org/abs/2403.11629
Autor:
Bhargava, Sunayana, Garrel, Christian, Koulouridis, Elias, Pierre, Marguerite, Valtchanov, Ivan, Cerardi, Nicolas, Maughan, Ben J., Aguena, Michel, Benoist, Christophe, Baguley, Cale, Ramos-Ceja, Miriam E., Adami, Christophe, Chiappetti, Lucio, Vignali, Cristian, Willis, Jon P.
Publikováno v:
A&A 673, A92 (2023)
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:
http://arxiv.org/abs/2301.11196
Autor:
Sweere, Sam F., Valtchanov, Ivan, Lieu, Maggie, Vojtekova, Antonia, Verdugo, Eva, Santos-Lleo, Maria, Pacaud, Florian, Briassouli, Alexia, Pérez, Daniel Cámpora
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 bas
Externí odkaz:
http://arxiv.org/abs/2205.01152
Autor:
Akino, Daichi, Eckert, Dominique, Okabe, Nobuhiro, Sereno, Mauro, Umetsu, Keiichi, Oguri, Masamune, Gastaldello, Fabio, Chiu, I-Non, Ettori, Stefano, Evrard, August E., Farahi, Arya, Maughan, Ben, Pierre, Marguerite, Ricci, Marina, Valtchanov, Ivan, Mccarthy, Ian, Mcgee, Sean, Miyazaki, Satoshi, Nishizawa, Atsushi J., Tanaka, Masayuki
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
Externí odkaz:
http://arxiv.org/abs/2111.10080
Autor:
Butler, Kirsty M., van der Werf, Paul P., Rybak, Matus, Costa, Tiago, Cox, Pierre, Weiß, Axel, Michałowski, Michał J., Riechers, Dominik A., Rigopoulou, Dimitra, Marchetti, Lucia, Eales, Stephen, Valtchanov, Ivan
We report the detection of a massive neutral gas outflow in the z=2.09 gravitationally lensed Dusty Star-Forming Galaxy HATLASJ085358.9+015537 (G09v1.40), seen in absorption with the OH+(1_1-1_0) transition using spatially resolved (0.5"x0.4") Atacam
Externí odkaz:
http://arxiv.org/abs/2104.10077
Autor:
Sun, Fengwu, Egami, Eiichi, Rawle, Timothy D., Walth, Gregory L., Smail, Ian, Dessauges-Zavadsky, Miroslava, Perez-Gonzalez, Pablo G., Richard, Johan, Combes, Francoise, Ebeling, H., Pello, Roser, van der Werf, Paul P., Altieri, B., Boone, Frederic, Cava, Antonio, Chapman, Scott C., Clement, Benjamin, Finoguenov, Alexis, Nakajima, Kimihiko, Rujopakarn, Wiphu, Schaerer, Daniel, Valtchanov, Ivan
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:
http://arxiv.org/abs/2101.03677
Autor:
Vojtekova, Antonia, Lieu, Maggie, Valtchanov, Ivan, Altieri, Bruno, Old, Lyndsay, Chen, Qifeng, Hroch, Filip
Astronomical images are essential for exploring and understanding the universe. Optical telescopes capable of deep observations, such as the Hubble Space Telescope, are heavily oversubscribed in the Astronomical Community. Images also often contain a
Externí odkaz:
http://arxiv.org/abs/2011.07002
Autor:
Kosiba, Matej, Lieu, Maggie, Altieri, Bruno, Clerc, Nicolas, Faccioli, Lorenzo, Kendrew, Sarah, Valtchanov, Ivan, Sadibekova, Tatyana, Pierre, Marguerite, Hroch, Filip, Werner, Norbert, Burget, Lukáš, Garrel, Christian, Koulouridis, Elias, Gaynullina, Evelina, Molham, Mona, Ramos-Ceja, Miriam E., Khalikova, Alina
Galaxy clusters appear as extended sources in XMM-Newton images, but not all extended sources are clusters. So, their proper classification requires visual inspection with optical images, which is a slow process with biases that are almost impossible
Externí odkaz:
http://arxiv.org/abs/2006.05998
The SPIRE FTS Spectral Feature Finder (FF), developed within the Herschel Spectral and Photometric Imaging Receiver (SPIRE) Fourier Transform Spectrometer (FTS) instrument team, is an automated spectral feature fitting routine that attempts to find s
Externí odkaz:
http://arxiv.org/abs/2005.12462
Autor:
Scott, Jeremy P., Hladczuk, Natalia, Spencer, Locke D., Valtchanov, Ivan, Benson, Chris S., Hopwood, Rosalind
The Herschel SPIRE FTS Spectral Feature Finder (FF) detects significant spectral features within SPIRE spectra and employs two routines, and external references, to estimate source radial velocity. The first routine is based on the identification of
Externí odkaz:
http://arxiv.org/abs/2005.12460