NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-25 T08:08:23 PDT
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For refcode 2012ApJS..203...24V:
There are 70290 NED objects in this reference.
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NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2012ApJS..203...24V Structural Parameters of Galaxies in CANDELS van der Wel, A.; Bell, E. F.; Haussler, B.; McGrath, E. J.; Chang, Yu-Yen; Guo, Yicheng; McIntosh, D. H.; Rix, H.-W.; Barden, M.; Cheung, E.; Faber, S. M.; Ferguson, H. C.; Galametz, A.; Grogin, N. A.; Hartley, W.; Kartaltepe, J. S.; Kocevski, D. D.; Koekemoer, A. M.; Lotz, J.; Mozena, M.; Peth, M. A.; Peng, Chien Y. Abstract. We present global structural parameter measurements of 109,533 unique, H_F160W_-selected objects from the CANDELS multi-cycle treasury program. Sersic model fits for these objects are produced with GALFIT in all available near-infrared filters (H_F160W_, J_F125W_ and, for a subset, Y_F105W_). The parameters of the best-fitting Sersic models (total magnitude, half-light radius, Sersic index, axis ratio, and position angle) are made public, along with newly constructed point-spread functions for each field and filter. Random uncertainties in the measured parameters are estimated for each individual object based on a comparison between multiple, independent measurements of the same set of objects. To quantify systematic uncertainties, we create a mosaic with simulated galaxy images with a realistic distribution of input parameters and then process and analyze the mosaic in an identical manner as the real data. We find that accurate and precise measurements---to 10% or better---of all structural parameters can typically be obtained for galaxies with H_F160W_ < 23, with comparable fidelity for basic size and shape measurements for galaxies to H_F160W_ ~ 24.5. Key words: catalogs, galaxies: high-redshift, galaxies: statistics, galaxies: structure, surveys
There are 70290 NED objects in this reference.
Please click here for ADS abstract

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