Results 111 to 120 of about 6,945 (227)

Statistical methods in weak gravitational lensing [PDF]

, 2015
This thesis studies several topics in the area of weak gravitational lensing and addresses some key statistical problems within this subject. A large part of the thesis concerns the measurement of galaxy shapes for weak gravitational lensing and the ...
Kacprzak, T
core  

Euclid preparation XXXVII. Galaxy colour selections with Euclid and ground photometry for cluster weak-lensing analyses [PDF]

Publisher Copyright: © 2024 EDP Sciences. All rights reserved.Aims. We derived galaxy colour selections from Euclid and ground-based photometry, aiming to accurately define background galaxy samples in cluster weak-lensing analyses. These selections have
Cimatti, A., Bender, R., Radovich, M., Starck, J. L., Conselice, C. J., Maurogordato, S., Giocoli, C., Moscardini, L., Brescia, M., Gozaliasl, G., Camera, S., Castellano, M., Corcione, L., Covone, G., Schneider, P., Carbone, C., Cavuoti, S., Bisigello, L., Bodendorf, C., Bonino, D., Andreon, S., Castander, F. J., Wang, Y., Lesci, G. F., Baldi, M., Sánchez, A. G., Casas, S., Baumont, L., Courtois, H. M., Capobianco, V., Auricchio, N., Sereno, M., Miranda La Hera, S., , Euclid Collaboration, Carretero, J., Farrens, S., Vannier, M., Branchini, E., Conversi, L., Biviano, A., Congedo, G., Copin, Y., Marulli, F., Bardelli, S., Courbin, F., Aghanim, N., Castignani, G., Amara, A., Brinchmann, J., Niemi, S. M., Ingoglia, L.   +50 more
core   +1 more source

The Dark Energy Survey Supernova Program: Light Curves and 5 Yr Data Release

The Astrophysical Journal
We present griz photometric light curves for the full 5 yr of the Dark Energy Survey Supernova (DES-SN) program, obtained with both forced point-spread function photometry on difference images ( DiffImg ) performed during survey operations, and scene ...
B. O. Sánchez, D. Brout, M. Vincenzi, M. Sako, K. Herner, R. Kessler, T. M. Davis, D. Scolnic, M. Acevedo, J. Lee, A. Möller, H. Qu, L. Kelsey, P. Wiseman, P. Armstrong, B. Rose, R. Camilleri, R. Chen, L. Galbany, E. Kovacs, C. Lidman, B. Popovic, M. Smith, P. Shah, M. Sullivan, M. Toy, T. M. C. Abbott, M. Aguena, S. Allam, O. Alves, J. Annis, J. Asorey, S. Avila, D. Bacon, D. Brooks, D. L. Burke, A. Carnero Rosell, D. Carollo, J. Carretero, L. N. da Costa, F. J. Castander, S. Desai, H. T. Diehl, J. Duarte, S. Everett, I. Ferrero, B. Flaugher, J. Frieman, J. García-Bellido, M. Gatti, E. Gaztanaga, G. Giannini, K. Glazebrook, S. González-Gaitán, R. A. Gruendl, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, K. Kuehn, O. Lahav, S. Lee, G. F. Lewis, H. Lin, J. L. Marshall, J. Mena-Fernández, R. Miquel, J. Myles, R. C. Nichol, R. L. C. Ogando, A. Palmese, M. E. S. Pereira, A. Pieres, A. A. Plazas Malagón, A. Porredon, A. K. Romer, E. Sanchez, D. Sanchez Cid, I. Sevilla-Noarbe, E. Suchyta, M. E. C. Swanson, G. Tarle, B. E. Tucker, D. L. Tucker, V. Vikram, A. R. Walker, N. Weaverdyck, DES Collaboration   +88 more
doaj   +1 more source

Performance analysis of extragalactic classifications in Gaia Data Release 4

Astronomy & Astrophysics
The Discrete Source Classifier (DSC) provides probabilistic classifications of sources in Gaia Data Release 4 (GDR4) based on empirically trained Bayesian classifiers.
Jamal Sara, Bailer-Jones Coryn A. L., Carballo Ruth, Creevey Orlagh L.   +3 more
doaj   +1 more source

Surface photometry of Virgo cluster galaxies - Barred galaxies

The Astronomical Journal, 1976
Photographic surface photometry in B and V is presented for three barred galaxies in the Virgo cluster: N4548, N4596, and N4608. Intercomparisons of luminosity and color profiles and standard photometric parameters indicate that for these galaxies: (1) the nuclear component follows the fourth-root-of-radius luminosity law for both B and V, (2) the ...
openaire   +1 more source

Galáxias post-starburst no universo local [PDF]

, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Física, Florianópolis, 2014Galáxias post-starburst (PSB) apresentam espectros com fortes linhas de absorção na série ...
Werle, Ariel
core  

Exposing Line Emission: The Systematic Differences of Measuring Galaxy Stellar Masses with JWST NIRCam Medium versus Wide Band Photometry

The Astrophysical Journal Letters
Photometrically derived stellar masses are known to suffer from systematic uncertainties, particularly due to nebular emission contributions to the spectral energy distribution (SED).
Ghassan T. E. Sarrouh, Adam Muzzin, Kartheik G. Iyer, Lamiya Mowla, Sunna Withers, Nicholas S. Martis, Roberto Abraham, Yoshihisa Asada, Maruša Bradač, Gabriel B. Brammer, Guillaume Desprez, Vince Estrada-Carpenter, Jasleen Matharu, Gaël Noirot, Marcin Sawicki, Victoria Strait, Chris J. Willott, Johannes Zabl   +17 more
doaj   +1 more source

The Red Supergiant Progenitor of the Type II Supernova 2024abfl

The Astrophysical Journal Letters
Linkage between core-collapse supernovae and their progenitors is not fully understood and ongoing effort of searching and identifying the progenitors is needed.
Jingxiao Luo, Lifu Zhang, Bing-Qiu Chen, Qiyuan Cheng, Boyang Guo, Jiao Li, Yanjun Guo, Jianping Xiong, Xiangcun Meng, Xuefei Chen, Zhengwei Liu, Zhanwen Han   +11 more
doaj   +1 more source

Massive Quiescent Disk Galaxies at 0.5 ≤ z ≤ 1 in CANDELS: Color Gradients and Likely Origin

The Astrophysical Journal
A rare population of massive disk-dominated quiescent galaxies has recently drawn much attention, which intrudes the red sequence (RS) population without destroying the underlying stellar disks.
Qifan Cui, Pinsong Zhao, F. S. Liu
doaj   +1 more source

Probabilistic Forward Modeling of Galaxy Catalogs with Normalizing Flows

The Astronomical Journal
Evaluating the accuracy and calibration of the redshift posteriors produced by photometric redshift (photo- z ) estimators is vital for enabling precision cosmology and extragalactic astrophysics with modern wide-field photometric surveys.
John Franklin Crenshaw, J. Bryce Kalmbach, Alexander Gagliano, Ziang Yan, Andrew J. Connolly, Alex I. Malz, Samuel J. Schmidt, The LSST Dark Energy Science Collaboration   +7 more
doaj   +1 more source