Papers › ALMA Lensing Cluster Survey: HST and Spitzer Photometry of 33 Lensed Fields Built with CHArGE
ALMA Lensing Cluster Survey: HST and Spitzer Photometry of 33 Lensed Fields Built with CHArGE
Vasily Kokorev, Gabriel Brammer, Seiji Fujimoto, Kotaro Kohno, Georgios E. Magdis, Francesco Valentino, Sune Toft, Pascal Oesch, Iary Davidzon, Franz E. Bauer, Dan Coe, Eiichi Egami, Masamune Oguri, Masami Ouchi, Marc Postman, Johan Richard, Jean-Baptiste Jolly, Kirsten K. Knudsen, Fengwu Sun, John R. Weaver, Yiping Ao, Andrew J. Baker, Larry Bradley, Karina I. Caputi, Miroslava Dessauges-Zavadsky, Daniel Espada, Bunyo Hatsukade, Anton M. Koekemoer, Alejandra M. Muñoz Arancibia, Kazuhiro Shimasaku, Hideki Umehata, Tao Wang, Wei-Hao Wang
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We present a set of multi-wavelength mosaics and photometric catalogs in the ALMA lensing cluster survey (ALCS) fields. The catalogs were built by reprocessing of archival data from the CHArGE compilation, taken by the Hubble Space Telescope (HST) in the RELICS, CLASH and Hubble Frontier Fields. Additionally we have reconstructed the Spitzer IRAC 3.6 and 4.5 μm mosaics, by utilising all the available archival IRSA/SHA exposures. To alleviate the effect of blending in such a crowded region, we have modelled the Spitzer photometry by convolving the HST detection image with the Spitzer PSF using the novel golfir software. The final catalogs contain 218,000 sources, covering a combined area of 690 arcmin². These catalogs will serve as an important tool in aiding the search of the sub-mm galaxies in future ALMA surveys, as well as follow ups of the HST dark - IRAC sources. Coupled with the available HST photometry the addition of the 3.6 and 4.5 μm bands will allow us to place a better constraint on photometric redshifts and stellar masses of these objects, thus giving us an opportunity to identify high-redshift candidates for spectroscopic follow ups and answer the important questions regarding the epoch of reionization and formation of first galaxies.
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