Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published February 2018 | Published + Submitted
Journal Article Open

Spitzer Observations of the North Ecliptic Pole


We present a photometric catalog for Spitzer Space Telescope warm mission observations of the North Ecliptic Pole (NEP; centered at R.A. = 18^h00^m00^s, decl. = 66^d33^m38^s.552). The observations are conducted with IRAC in the 3.6 and 4.5 μm bands over an area of 7.04 deg^2, reaching 1σ depths of 1.29 μJy and 0.79 μJy in the 3.6 μm and 4.5 μm bands, respectively. The photometric catalog contains 380,858 sources with 3.6 and 4.5 μm band photometry over the full-depth NEP mosaic. Point-source completeness simulations show that the catalog is 80% complete down to 19.7 AB. The accompanying catalog can be used for constraining the physical properties of extragalactic objects, studying the AGN population, measuring the infrared colors of stellar objects, and studying the extragalactic infrared background light.

Additional Information

© 2018 American Astronomical Society. Received 2017 September 3. Accepted 2017 November 19. Published 2018 February 8. We wish to thank the referee for reading the original manuscript and providing useful suggestions. Financial support for this work was provided by NSF through AST-1313319 for H.N. and A.C. The UCI group also acknowledges support from HST-GO-14083.002-A, HST-GO-13718.002-A, and NASA NNX16AF38G grants. M.I. acknowledge the support from the NRFK grant, No. 2017R1A3A3001362. This work was supported by NASA APRA research grants NNX07AI54G, NNG05WC18G, NNX07AG43G, NNX07AJ24G, and NNX10AE12G. This work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech.

Attached Files

Published - Nayyeri_2018_ApJS_234_38.pdf

Submitted - 1712.01290.pdf


Files (7.2 MB)
Name Size Download all
2.5 MB Preview Download
4.8 MB Preview Download

Additional details

August 21, 2023
October 18, 2023