THE MULTIWAVELENGTH SURVEY BY YALE-CHILE (MUSYC): DEEP MEDIUM-BAND OPTICAL IMAGING AND HIGH-QUALITY 32-BAND PHOTOMETRIC REDSHIFTS IN THE ECDF-S

Journal Article · Sun Aug 15 04:00:00 EDT 2010 · Astrophysical Journal, Supplement Series

DOI:https://doi.org/10.1088/0067-0049/189/2/270· OSTI ID:21455076

Cardamone, Carolin N; Van Dokkum, Pieter G; Urry, C Megan; Brammer, Gabriel ^[1]; Taniguchi, Yoshi ^[2]; Gawiser, Eric; Bond, Nicholas ^[3]; Taylor, Edward; Damen, Maaike ^[4]; Treister, Ezequiel ^[5]; Cobb, Bethany E ^[6]; Schawinski, Kevin ^[7]; Lira, Paulina ^[8]; Murayama, Takashi ^[9]; Saito, Tomoki ^[10]; Sumikawa, Kentaro ^[11]

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1. Department of Astronomy, Yale University, New Haven, CT 06511 (United States)
2. Research Center for Space and Cosmic Evolution, Ehime University, Bunkyo-cho 2-5, Matsuyama 790-8577 (Japan)
3. Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854-8019 (United States)
4. Sterrewacht Leiden, Leiden University, NL-2300 RA Leiden (Netherlands)
5. Institute for Astronomy, 2680 Woodlawn Drive, University of Hawaii, Honolulu, HI 96822 (United States)
6. Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States)
7. Yale Center for Astronomy and Astrophysics, Yale University, P.O. Box 208121, New Haven, CT 06520 (United States)
8. Departamento de Astronoma, Universidad de Chile, Casilla 36-D, Santiago (Chile)
9. Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578 (Japan)
10. Institute for Physics and Mathematics of the Universe, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan)
11. Graduate School of Science and Engineering, Ehime University, Bunkyo-cho, Matsuyama 790-8577 (Japan)

We present deep optical 18-medium-band photometry from the Subaru telescope over the {approx}30' x 30' Extended Chandra Deep Field-South, as part of the Multiwavelength Survey by Yale-Chile (MUSYC). This field has a wealth of ground- and space-based ancillary data, and contains the GOODS-South field and the Hubble Ultra Deep Field. We combine the Subaru imaging with existing UBVRIzJHK and Spitzer IRAC images to create a uniform catalog. Detecting sources in the MUSYC 'BVR' image we find {approx}40,000 galaxies with R {sub AB} < 25.3, the median 5{sigma} limit of the 18 medium bands. Photometric redshifts are determined using the EAzY code and compared to {approx}2000 spectroscopic redshifts in this field. The medium-band filters provide very accurate redshifts for the (bright) subset of galaxies with spectroscopic redshifts, particularly at 0.1 < z < 1.2 and at z {approx}> 3.5. For 0.1 < z < 1.2, we find a 1{sigma} scatter in {Delta}z/(1 + z) of 0.007, similar to results obtained with a similar filter set in the COSMOS field. As a demonstration of the data quality, we show that the red sequence and blue cloud can be cleanly identified in rest-frame color-magnitude diagrams at 0.1 < z < 1.2. We find that {approx}20% of the red sequence galaxies show evidence of dust emission at longer rest-frame wavelengths. The reduced images, photometric catalog, and photometric redshifts are provided through the public MUSYC Web site.

• OSTI ID: 21455076
• Journal Information: Astrophysical Journal, Supplement Series, Journal Name: Astrophysical Journal, Supplement Series Journal Issue: 2 Vol. 189; ISSN 0067-0049; ISSN APJSA2
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
CATALOGS
CLOUDS
COLOR
COSMOLOGY
DOCUMENT TYPES
DUSTS
EMISSION
EVOLUTION
GALACTIC EVOLUTION
GALAXIES
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
RED SHIFT
TELESCOPES
UNIVERSE
WAVELENGTHS