AzTEC millimetre survey of the COSMOS field – I. Data reduction and source catalogue

By K. Scott, J. Austermann, T. Perera, G. Wilson, I. Aretxaga, J. Bock, D. Hughes, Y. Kang, S. Kim, P. Mauskopf and 6 more. 2008

191 citations recorded by the source corpus.

We present a 1.1mm wavelength imaging survey covering 0.3 deg^2 in the COSMOS field. These data, obtained with the AzTEC continuum camera on the James Clerk Maxwell Telescope, were centred on a prominent large-scale structure overdensity which includes a rich X-ray cluster at z ≈ 0.73. A total of 50 mm-galaxy candidates, with a significance ranging from 3.5 to 8.5σ, are extracted from the central 0.15 deg^2 area which has a uniform sensitivity of ∼1.3 mJy beam^−1. 16 sources are detected with S/N ≥ 4.5, where the expected false detection rate is zero, of which a surprisingly large number (9) have intrinsic (deboosted) fluxes ≥5 mJy at 1.1 mm. Assuming the emission is dominated by radiation from dust, heated by a massive population of young, optically obscured stars, then these bright AzTEC sources have far-infrared luminosities >6 × 10^(12)L_☉ and star formation rates ≥1100M_☉ yr^(−1). Two of these nine bright AzTEC sources are found towards the extreme peripheral region of the X-ray cluster, whilst the remainder are distributed across the larger scale overdensity. We describe the AzTEC data reduction pipeline, the source-extraction algorithm, and the characterization of the source catalogue, including the completeness, flux deboosting correction, false-detection rate and the source positional uncertainty, through an extensive set of Monte Carlo simulations. We conclude with a preliminary comparison, via a stacked analysis, of the overlapping MIPS 24-μm data and radio data with this AzTEC map of the COSMOS field.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/9f5133803d4f24725f06c114266450e5eb4de828

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. L. Hernquist
2. P. Hopkins
3. D. M. Alexander
4. P. V. van Dokkum
5. R. Somerville
6. M. Franx
7. E. Daddi
8. R. Dav'e

Citations in the corpus

• The VLA-COSMOS 3 GHz Large Project: Continuum data and source catalog release (2017, background): “…Hasinger et al. 2007; Capak et al. 2007; Sanders et al. 2007; Bertoldi et al. 2007; Elvis et al. 2009; Ilbert et al. 2013; McCracken et al. 2012; Scott et al. 2008; Aretxaga et al. 2011; Smolčić et al. 2012; Miettinen et al. 2015; Civano et al. 2016; Laigle et al. 2016, Capak et al., in…”
• Cosmic evolution of submillimeter galaxies and their contribution to stellar mass assembly (2009, unknown): “…2007, 2008, 2009a; Clements et al., 2008; Coppin et al., 2008; Dye et al., 2008, 2009; Hainline, 2008; Hainline et al., 2009; Perera et al., 2008; Scott et al., 2008; Austermann et al., 2009; Devlin et al., 2009; Eales et al., 2009; Murphy et al., 2009; Murphy, 2009; Tamura et al., 2009; Weiß…”
• THE STAR FORMATION HISTORY OF MASS-SELECTED GALAXIES IN THE COSMOS FIELD (2010, methodology): “…observations of the whole or parts of the COSMOS field in the X-ray (Hasinger et al. 2007; Elvis et al. 2009) and millimeter (Bertoldi et al. 2007; Scott et al. 2008), imaging by Spitzer in the midto far-IR (Sanders et al. 2007) as well as interferometric radio data (Schinnerer et al. 2004, 2007,…”
• THE CHANDRA COSMOS SURVEY. I. OVERVIEW AND POINT SOURCE CATALOG (2009, background): “…on this same central sub-field of COSMOS: the z-COSMOS Deep spectroscopic survey (to B∼25, Lilly et al. 2007), the deep VLA survey (6 µJy rms, Schinnerer et al. 2009, in preparation), and several – 6 – millimeter and sub-millimeter surveys (MAMBO, Bertoldi et al. 2007 and AzTEC, Scott et al. 2008).”
• A PUBLIC Ks-SELECTED CATALOG IN THE COSMOS/UltraVISTA FIELD: PHOTOMETRY, PHOTOMETRIC REDSHIFTS, AND STELLAR POPULATION PARAMETERS, (2013, methodology): “It contains X-ray data from XMM − Newton (Hasinger et al. 2007), and Chandra (Elvis et al. 2009), UV imaging from the GALEX satellite (Martin et al. 2005), extensive optical broad-band and optical mediumband imaging from the CFHT and Subaru telescopes (Taniguchi et al. 2007; Capak et al. 2007), mid-”
• Scuba-2: Iterative map-making with the sub-millimetre user reduction facility (2013, methodology): “A method for reducing data in fields of faint point sources with Bolocam (e.g., Laurent et al. 2005), and its younger sibling the Aztronomical Thermal Emission Camera (AzTEC, e.g., Scott et al. 2008), is principal component analysis (PCA) cleaning.”
• The AzTEC mm-wavelength camera (2008, background): “The AzTEC/JCMT05B surveys of the Lockman Hole and the Subaru Deep Field (Austermann et al. in preparation), COSMOS (Scott et al. 2008), and GOODS-North (Perera et al. in preparation) represent the largest SMG surveys with uniform high sensitivity (1σ ∼ 1 mJy) ever conducted, successfully…”
• MEASUREMENTS OF SECONDARY COSMIC MICROWAVE BACKGROUND ANISOTROPIES WITH THE SOUTH POLE TELESCOPE (2009, background): “These sources have been extensively studied at higher frequencies by SCUBA (Holland et al. 1999), MAMBO (Kreysa et al. 1998), Bolocam (Glenn et al. 1998), LABOCA (Siringo et al. 2009), AzTEC (Scott et al. 2008), SCUBA-2 (Holland et al. 2006), and BLAST (Pascale et al. 2008), and there have been some”
• A deep ALMA image of the Hubble Ultra Deep Field (2016, background): “…Geach et al. 2013), IRAM (Dannerbauer et al. 2004; Greve et al. 2004; Lindner et al. 2011), APEX (Weiss et al. 2009; Smolcic et al. 2012), ASTE (Scott et al. 2008, 2010; Hatsukade et al. 2010, 2011), BLAST (Devlin et al. 2009; Dunlop et al. 2010) and Herschel (Elbaz et al. 2011; Lutz et al.…”
• THE LESSER ROLE OF STARBURSTS IN STAR FORMATION AT z = 2 (2011, background): “Only 2 of our 28 sources fall in the AzTEC area (Scott et al. 2008), and one of them is detected in the millimeter catalog.”
• THE VLA-COSMOS SURVEY. IV. DEEP DATA AND JOINT CATALOG (2010, methodology): “…2007), optical HST (Scoville et al. 2007a; Koekemoer et al. 2007), midto far-infrared Spitzer (Sanders et al. 2007), millimeter (Bertoldi et al. 2007; Scott et al. 2008) and radio VLA (Schinnerer et al. 2004, 2007) imaging to extensive optical spectroscopy using the VLT/VIMOS and Magellan/IMACS…”
• EXTRAGALACTIC MILLIMETER-WAVE SOURCES IN SOUTH POLE TELESCOPE SURVEY DATA: SOURCE COUNTS, CATALOG, AND STATISTICS FOR AN 87 SQUARE-DEGREE FIELD (2009, methodology): “…in surveys of blank fields, but only over a total area on the order of a square degree (Scott et al. 2002; Borys et al. 2003; Greve et al. 2004; Laurent et al. 2005; Coppin et al. 2006; Bertoldi et al. 2007; Perera et al. 2008; Scott et al. 2008; Austermann et al. 2010; Weiß et al. 2009).”
• ALMA IMAGING OF GAS AND DUST IN A GALAXY PROTOCLUSTER AT REDSHIFT 5.3: [C ii] EMISSION IN “TYPICAL” GALAXIES AND DUSTY STARBURSTS ≈1 BILLION YEARS AFTER THE BIG BANG (2014, background): “We have recently identified AzTEC-3, a gas-rich SMG at z=5.3 (Riechers et al. 2010, hereafter R10; Capak et al. 2011, hereafter C11) in the AzTEC 1.1mm study of the Cosmic Evolution Survey (COSMOS) field (Scoville et al. 2007; Scott et al. 2008).”
• Dusty Star Forming Galaxies at High Redshift (2014, methodology): “AzTEC has performed some of the deepest and widest ground-based extragalactic field pointings, including several pointings in the COSMOS field (e.g. Scott et al., 2008; Aretxaga et al., 2011) and has been responsible for the discovery of some of the highest redshift SMGs known around z ≈ 5 (e.g.…”
• A Herschel view of the far-infrared properties of submillimetre galaxies (2012, methodology): “We cross-match this sample of 64 SMGs with the AzTEC catalogue of Scott et al. (2008), which has no multi-wavelength identifications.”