Zobrazeno 1 - 10
of 201
pro vyhledávání: '"Merson, A. I."'
We perform an analysis of photometric redshifts estimated by using a non-representative training sets in magnitude space. We use the ANNz2 and GPz algorithms to estimate the photometric redshift both in simulations as well as in real data from the Sl
Externí odkaz:
http://arxiv.org/abs/1804.03805
Autor:
Cucciati, O., Marulli, F., Cimatti, A., Merson, A. I., Norberg, P., Pozzetti, L., Baugh, C. M., Branchini, E.
We exploit the synergy between low-resolution spectroscopy and photometric redshifts to study environmental effects on galaxy evolution in slitless spectroscopic surveys from space. As a test case, we consider the future Euclid Deep survey (~40deg$^2
Externí odkaz:
http://arxiv.org/abs/1604.05323
Autor:
Kim, Jae-Woo, Im, Myungshin, Lee, Seong-Kook, Edge, Alastair C., Wake, David A., Merson, Alexander I., Jeon, Yiseul
Publikováno v:
2015, ApJ, 806, 189
We study the dependence of angular two-point correlation functions on stellar mass ($M_{*}$) and specific star formation rate (sSFR) of $M_{*}>10^{10}M_{\odot}$ galaxies at $z\sim1$. The data from UKIDSS DXS and CFHTLS covering 8.2 deg$^{2}$ sample s
Externí odkaz:
http://arxiv.org/abs/1507.02396
Autor:
Ascaso, Begoña, Benítez, Narciso, Fernández-Soto, Alberto, Arnalte-Mur, Pablo, López-Sanjuan, Carlos, Molino, Alberto, Schoenell, William, Jiménez-Teja, Yolanda, Merson, Alexander I., Huertas-Company, Marc, Díaz-García, Luis Alberto, Martínez, Vicent J., Cenarro, A. Javier, Dupke, Renato, Márquez, Isabel, Masegosa, Josefa, Nieves-Seoane, Lorena, Povic, Mirjana, Varela, Jesús, Viironen, Kerttu, Aguerri, J. Alfonso L., Del Olmo, Ascensión, Moles, Mariano, Perea, Jaime, Alfaro, Emilio, Aparicio-Villegas, Teresa, Broadhurst, Tom, Cabrera-Caño, Jesús, Castander, Francisco J., Cepa, Jordi, Cerviño, Miguel, González~Delgado, Rosa M., Cristóbal-Hornillos, David, Hurtado-Gil, Lluis, Husillos, Cesar, Infante, Leopoldo, Prada, Francisco, Quintana, Jose María
We present a catalogue of 348 galaxy clusters and groups with $0.2
Externí odkaz:
http://arxiv.org/abs/1506.03823
Autor:
Merson, Alexander I., Jasche, Jens, Abdalla, Filipe B., Lahav, Ofer, Wandelt, Benjamin, Jones, D. Heath, Colless, Matthew
We present a proof-of-concept of a novel and fully Bayesian methodology designed to detect halos of different masses in cosmological observations subject to noise and systematic uncertainties. Our methodology combines the previously published Bayesia
Externí odkaz:
http://arxiv.org/abs/1505.03528
Autor:
Merson, Alexander I., Baugh, Carlton M., Gonzalez-Perez, Violeta, Abdalla, Filipe B., Lagos, Claudia del P., Mei, Simona
Publikováno v:
MNRAS 456 (Issue 2, Feb 2016): 1681-1699
High-redshift galaxy clusters allow us to examine galaxy formation in extreme environments. Here we compile data for 15 $z>1$ galaxy clusters to test the predictions from a state-of-the-art semi-analytical model of galaxy formation. The model gives a
Externí odkaz:
http://arxiv.org/abs/1502.04984
Autor:
Campbell, Lachlan A., Lucey, John R., Colless, Matthew, Jones, D. Heath, Springob, Christopher M., Magoulas, Christina, Proctor, Robert N., Mould, Jeremy R., Read, Mike A., Brough, Sarah, Jarrett, Tom, Merson, Alex I., Lah, Philip, Beutler, Florian, Cluver, Michelle E., Parker, Quentin A.
We report the 6dFGS Fundamental Plane (6dFGSv) catalogue that is used to estimate distances and peculiar velocities for nearly 9,000 early-type galaxies in the local (z$<$0.055) universe. Velocity dispersions are derived by cross-correlation from 6dF
Externí odkaz:
http://arxiv.org/abs/1406.4867
Autor:
Arnalte-Mur, P., Martínez, V. J., Norberg, P., Fernández-Soto, A., Ascaso, B., Merson, A. I., Aguerri, J. A. L., Castander, F. J., Hurtado-Gil, L., López-Sanjuan, C., Molino, A., Montero-Dorta, A. D., Stefanon, M., Alfaro, E., Aparicio-Villegas, T., Benítez, N., Broadhurst, T., Cabrera-Caño, J., Cepa, J., Cerviño, M., Cristóbal-Hornillos, D., del Olmo, A., Delgado, R. M. González, Husillos, C., Infante, L., Márquez, I., Masegosa, J., Moles, M., Perea, J., Pović, M., Prada, F., Quintana, J. M.
Publikováno v:
MNRAS, Volume 441, pp. 1783-1801 (2014)
We study the clustering of galaxies as function of luminosity and redshift in the range $0.35 < z < 1.25$ using data from the Advanced Large Homogeneous Area Medium Band Redshift Astronomical (ALHAMBRA) survey. The ALHAMBRA data used in this work cov
Externí odkaz:
http://arxiv.org/abs/1311.3280
Autor:
Merson, Alexander I., Baugh, Carlton M., Helly, John C., Gonzalez-Perez, Violeta, Cole, Shaun, Bielby, Richard, Norberg, Peder, Frenk, Carlos S., Benson, Andrew J., Bower, Richard G., Lacey, Cedric G., Lagos, Claudia del P.
We introduce a method for constructing end-to-end mock galaxy catalogues using a semi-analytical model of galaxy formation, applied to the halo merger trees extracted from a cosmological N-body simulation. The mocks that we construct are lightcone ca
Externí odkaz:
http://arxiv.org/abs/1206.4049
Autor:
Lin, Lihwai, Dickinson, Mark, Jian, Hung-Yu, Merson, A. I., Baugh, C. M., Scott, Douglas, Foucaud, Sebastien, Wang, Wei-Hao, Yan, Chi-Hung, Yan, Hao-Jing, Cheng, Yi-Wen, Guo, Yicheng, Helly, John, Kirsten, Franz, Koo, David C., Lagos, Claudia del P., Meger, Nicole, Pope, Alexandra, Simard, Luc, Grogin, Norman A., Messias, Hugo, Wang, Shiang-Yu
Publikováno v:
Astrophysical Journal 756:71-81, 2012
Using a sample of BzK-selected galaxies at z~2 identified from the CFHT/WIRCAM near-infrared survey of GOODS-North, we discuss the relation between star formation rate (SFR), specific star formation rate (SSFR), and stellar mass (M_{*}), and the clus
Externí odkaz:
http://arxiv.org/abs/1111.2135