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2022RNAAS...6...63R - Research Notes of the AAS, 6, 63 (2022/March-0)

Seeing-Sorted Large Binocular Camera U-band Imaging of the Extended Groth Strip.

REDSHAW C., McCABE T., OTTESON L., WINDHORST R.A., JANSEN R.A., COHEN S.H., CARLETON T., ASHCRAFT T.A., NONINO M., PARIS D., GRAZIAN A., FONTANA A., GIALLONGO E., SPEZIALI R., TESTA V., BOUTSIA K., KOEKEMOER A., O'CONNELL R.W., RUTKOWSKI M.J., RYAN R.E., SCARLATA C., TEPLITZ H.I., WANG X., RAFELSKI M. and GROGIN N.A.

Abstract (from CDS):

We present the results of deep ground-based U-band imaging of the Extended Groth Strip (EGS) field, and the creation of a best resolution mosaic and a best depth mosaic following the seeing-sorted stacking method of Ashcraft et al. The analysis uses 324 images taken from 2012 March to 2021 June using the Large Binocular Camera. The best resolution mosaic includes the 16.4% of images with FWHM ≤ 0.″9, while the best depth mosaic includes the 73.5% of images with FWHM ≤ 1.″6. Each image's zero-point was matched to SDSS u, to account for transparency variations. Images with stellar ellipticity (1 - b/a) ≥ 0.08 were omitted. We find that the galaxy counts turn over at UAB ∼ 25.75 mag in the best resolution mosaic and at ∼26 mag in the best depth mosaic. The EGS field is the final UVCANDELS field analyzed using the seeing-sorted stacking method.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Ultraviolet surveys - Astronomy data analysis - Astronomical seeing - Ground telescopes

Simbad objects: 4

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