Results 21 to 30 of about 149,799 (312)

The construction of large-scale structure catalogs for the Dark Energy Spectroscopic Instrument [PDF]

Journal of Cosmology and Astroparticle Physics
We present the technical details on how large-scale structure (LSS) catalogs are constructed from redshifts measured from spectra observed by the Dark Energy Spectroscopic Instrument (DESI).
A. Ross, J. Aguilar, S. Ahlen, S. Alam, A. Anand, S. Bailey, D. Bianchi, S. Brieden, D. Brooks, E. Burtin, A. Rosell, E. Chaussidon, T. Claybaugh, S. Cole, K. Dawson, A. Macorra, A. D. Mattia, A. Dey, B. Dey, P. Doel, K. Fanning, S. Ferraro, J. Ereza, A. Font-Ribera, J. Forero-Romero, E. Gazta˜naga, H. Gil-Mar´ın, S. Gontcho, A. Gontcho, A. González-Morales, J. Guy, C. Hahn, S. Heydenreich, K. Honscheid, C. Howlett, M. Ishak, T. Karim, D. Kirkby, T. Kisner, H. Kong, A. Kremin, A. Krolewski, A. Lambert, M. Landriau, J. Lasker, L. Guillou, M. Levi, M. Manera, P. Martini, P. McDonald, A. Meisner, R. Miquel, J. Moon, J. Moustakas, A. Mu˜noz-Guti´errez, A. Myers, S. Nadathur, L. Napolitano, J. Newman, J. Nie, G. Niz, N. Palanque-Delabrouille, W. Percival, C. Poppett, F. Prada, A. Raichoor, C. Ravoux, M. Rezaie, A. Rosado-Marín, G. Rossi, L. Samushia, E. Sanchez, E. Schlafly, D. Schlegel, H. Seo, A. Smith, D. Sprayberry, G. Tarl´e, D. Valcin, M. Vargas-Maga˜na, B. Weaver, M. Wilson, J. Yu, P. Zarrouk, C. Zhao, R. Zhou, H. Zou   +86 more
semanticscholar   +1 more source

The Zwicky Transient Facility Bright Transient Survey. I. Spectroscopic Classification and the Redshift Completeness of Local Galaxy Catalogs [PDF]

Astrophysical Journal, 2019
The Zwicky Transient Facility (ZTF) is performing a three-day cadence survey of the visible northern sky (∼3π) with newly found transient candidates announced via public alerts.
U. C. Fremling, A. Miller, Y. Sharma, A. Dugas, D. Perley, Kirsty Taggart, J. Sollerman, A. Goobar, M. Graham, J. Neill, J. Nordin, M. Rigault, R. Walters, I. Andreoni, A. Bagdasaryan, J. Belicki, C. Cannella, E. Bellm, S. Cenko, K. De, R. Dekany, S. Frederick, V. Golkhou, M. Graham, G. Helou, A. Ho, M. Kasliwal, T. Kupfer, R. Laher, A. Mahabal, F. Masci, R. Riddle, B. Rusholme, S. Schulze, D. Shupe, R. Smith, Lin Yan, Y. Yao, Z. Zhuang, S. Kulkarni   +39 more
semanticscholar   +1 more source

Probabilistic Forward Modeling of Galaxy Catalogs with Normalizing Flows [PDF]

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. Evaluating photo-
J. F. Crenshaw, J. Kalmbach, Alexander T. Gagliano, Ziang Yan, Andrew J. Connolly, A. Malz, Samuel J. Schmidt, The Lsst Dark Energy Science Collaboration   +7 more
semanticscholar   +1 more source

Cross-correlating galaxy catalogs and gravitational waves: A tomographic approach [PDF]

, 2020
Unveiling the origin of the coalescing binaries detected via gravitational waves (GW) is challenging, notably if no multi-wavelength counterpart is detected.
F. Calore, A. Cuoco, T. Regimbau, S. Sachdev, P. Serpico   +4 more
semanticscholar   +1 more source

Inconsistencies and Lurking Pitfalls in the Magnitude–Frequency Distribution of High-Resolution Earthquake Catalogs

Seismological Research Letters, 2020
Earthquake catalogs describe the distribution of earthquakes in space, time, and magnitude, which is essential information for earthquake forecasting and the assessment of seismic hazard and risk.
M. Herrmann, W. Marzocchi
semanticscholar   +1 more source

Catalog-to-catalog reductions

The Astrophysical Journal, 1990
Les problemes de reduction systematique des catalogues d'etoiles, afin de creer un systeme positionnel uniforme et un systeme de mouvement propre standard, sont analyses.
L. G. Taff, B. Bucciarelli, M. G. Lattanzi   +2 more
openaire   +1 more source

Artificial Star Test for Crowded Field CCD Photometry

Open Astronomy, 2015
A new method of performing an artificial star test (AST) for crowded field stellar CCD photometry is proposed. This AST method is superior in the cases when it is necessary to account for varying photometric quality across the study field, arising due to
Stonkutė R., Vansevičius V.
doaj   +1 more source

Two New Catalogs of Blazar Candidates in the WISE Infrared Sky [PDF]

Astrophysical Journal Supplement Series, 2019
We present two catalogs of radio-loud candidate blazars whose Wide-Field Infrared Survey Explorer (WISE) mid-infrared colors are selected to be consistent with the colors of confirmed γ-ray-emitting blazars. The first catalog is the improved and expanded
R. D’abrusco, N. Álvarez Crespo, F. Massaro, R. Campana, V. Chavushyan, M. Landoni, F. La Franca, N. Masetti, D. Milisavljevic, A. Paggi, F. Ricci, H. Smith   +11 more
semanticscholar   +1 more source

Resource Discovery: Catalogs, Cataloging, and the User [PDF]

Library Trends, 2007
This article considers resource discovery from the viewpoint of visually impaired people. Starting with the tasks of find, identify, select, and obtain, it examines how catalogs can be enhanced to assist visually impaired users. It then looks at the inclusion of specific data within catalog records and how they help the user.
openaire   +1 more source

3D-HST WFC3-SELECTED PHOTOMETRIC CATALOGS IN THE FIVE CANDELS/3D-HST FIELDS: PHOTOMETRY, PHOTOMETRIC REDSHIFTS, AND STELLAR MASSES [PDF]

, 2014
The 3D-HST and CANDELS programs have provided WFC3 and ACS spectroscopy and photometry over ≈900 arcmin2 in five fields: AEGIS, COSMOS, GOODS-North, GOODS-South, and the UKIDSS UDS field.
R. Skelton, K. Whitaker, I. Momcheva, G. Brammer, P. V. van Dokkum, I. Labbé, M. Franx, A. van der Wel, R. Bezanson, E. da Cunha, M. Fumagalli, N. F. Förster Schreiber, M. Kriek, J. Leja, B. Lundgren, D. Magee, D. Marchesini, M. Maseda, E. Nelson, P. Oesch, C. Pacifici, Shannon G. Patel, S. Price, H. Rix, T. Tal, D. Wake, S. Wuyts   +26 more
semanticscholar   +1 more source