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J/MNRAS/411/505   Sub-mm observations in Extended Chandra DFS    (Chapin+, 2011)

A joint analysis of BLAST 250-500µm and LABOCA 870µm observations in the Extended Chandra Deep Field-South. Chapin E.L., Chapman S.C., Coppin K.E., Devlin M.J., Dunlop J.S., Greve T.R., Halpern M., Hasselfield M.F., Hughes D.H., Ivison R.J., Marsden G., Moncelsi L., Netterfield C.B., Pascale E., Scott D., Smail I., Viero M., Walter F., Weiss A., Werf P.V.D. <Mon. Not. R. Astron. Soc., 411, 505-549 (2011)> =2011MNRAS.411..505C
ADC_Keywords: Galaxy catalogs ; X-ray sources ; Millimetric/submm sources Keywords: galaxies: formation - galaxies: high-redshift - submillimetre: galaxies Abstract: We present a joint analysis of the overlapping Balloon-borne Large Aperture Submillimetre Telescope (BLAST) 250, 350, 500um, and LABOCA 870um observations [from the LABOCA ECDFS Submm Survey (LESS) survey] of the Extended Chandra Deep Field-South. Out to z∼3, the BLAST filters sample near the peak wavelength of thermal far-infrared (FIR) emission from galaxies (rest-frame wavelengths ∼60-200um), primarily produced by dust heated through absorption in star-forming clouds. However, identifying counterparts to individual BLAST peaks is very challenging, given the large beams [full-width at half-maximum (FWHM) 36-60 arcsec]. In contrast, the ground-based 870um observations have a significantly smaller 19 arcsec FWHM beam, and are sensitive to higher redshifts (z∼1-5, and potentially beyond) due to the more favourable negative K-correction. We use the LESS data, as well as deep Spitzer and VLA imaging, to identify 118 individual sources that produce significant emission in the BLAST bands. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tablec1.dat 86 64 *250um peak list produced from matched-filtered maps that land within the coverage of the matching catalogue tablec2.dat 86 67 *350um peak list produced from matched-filtered maps tablec3.dat 86 57 *500um peak list produced from matched-filtered maps tablec4.dat 86 81 *870um peak list produced from matched-filtered maps tablec5.dat 142 118 Matches between the external catalogue with each of the four submm peak lists tablec6.dat 70 118 Maximum-likelihood submm photometry, SED model fits and redshifts
Note on tablec1.dat: On average, each of these peaks is a blend of 3.2 sources from our matching catalogue. Note on tablec2.dat: On average, each of these peaks is a blend of 3.4 sources from our matching catalogue. Note on tablec3.dat: On average, each of these peaks is a blend of 3.7 sources from our matching catalogue. Note on tablec4.dat: On average, each of these peaks is a blend of 2.2 sources in our matching catalogue.
See also: J/ApJS/161/21 : Extended Chandra Deep Field-South survey (Lehmer+, 2005) J/AJ/131/2373 : Extended Chandra Deep Field-South survey (Virani+, 2006) J/other/Nat/458.737 : BLAST sources at 250, 350 and 500um (Devlin+, 2009) J/ApJ/727/1 : IRAC/MUSYC SIMPLE survey (Damen+, 2011) Byte-by-byte Description of file: tablec[1234].dat
Bytes Format Units Label Explanations
1- 3 I3 --- SID SID number (1) 5- 32 A28 --- PName Previously published name (2) 34- 44 A11 --- Seq Match ID(s), in tablec5.dat 45 A1 --- n_Seq [*] * when no matches (3) 47- 48 I2 h RAh Submm peak centroid Right ascension (J2000) 50- 51 I2 min RAm Submm peak centroid Right ascension (J2000) 53- 57 F5.2 s RAs Submm peak centroid Right ascension (J2000) 59 A1 --- DE- Submm peak centroid Declination sign (J2000) 60- 61 I2 deg DEd Submm peak centroid Declination (J2000) 63- 64 I2 arcmin DEm Submm peak centroid Declination (J2000) 66- 69 F4.1 arcsec DEs Submm peak centroid Declination (J2000) 71- 75 F5.1 mJy S Flux density, at 250, 350, 500 or 870um (4) 77- 80 F4.1 mJy e_S rms uncertainty on Flux density (instrumental noise only) 82- 86 F5.2 --- S/N Signal-to-noise ratio (5)
Note (1): SID number, refers to SID250 for tablec1 ([CCC2011] SID250 NNN), SID350 for tablec2 ([CCC2011] SID350 NNN), SID500 for tablec3 ([CCC2011] SID500 NNN) and SID870 for tablec4 ([CCC2011] SID870 NNN). Note (2): * For tables C1-C3 (≤500um), taken from the supplement to Devlin et al. (2009, Cat. J/other/Nat/458.737) when available (new peaks have no entry in this column). * For table C4 (870um), taken from Weiss et al. (2009, preprint) that land within the coverage of the matching catalogue. Note (3): For tablec4.dat: the 33 peaks marked with an asterisk have no matches in any of the BLAST peak catalogues (Tables C1-C3). These peaks are used to measure priors, but are not otherwise analyzed in this paper. Note (4): The flux densities are raw values from the maps (with no correction for flux boosting), and the noises refer to instrumental noise only (excluding source confusion). Note (5): S/N refer to instrumental noise only (excluding source confusion), except for tablec4.dat, where S/N is measured with respect to the combined instrumental and confusion noise.
Byte-by-byte Description of file: tablec5.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential number, [CCC2011] NNN in Simbad 5- 9 I5 --- SIMPLE ? SIMPLE identification number (1) 11- 13 I3 --- SID ? SID870um identification number (1) 15- 16 I2 h RAh IRAC Right ascension (J2000) 18- 19 I2 min RAm IRAC Right ascension (J2000) 21- 25 F5.2 s RAs IRAC Right ascension (J2000) 27 A1 --- DE- IRAC Declination sign (J2000) 28- 29 I2 deg DEd IRAC Declination (J2000) 31- 32 I2 arcmin DEm IRAC Declination (J2000) 34- 37 F4.1 arcsec DEs IRAC Declination (J2000) 39- 41 I3 --- SID250 ?=- submm SID for 250um peak (tablec1) 43- 46 F4.1 arcsec r250 ?=- Radial separation for 250um peak 48- 52 F5.1 --- L250 ?=- Likelihood ratio for 250um peak 54- 58 F5.3 --- Pm250 ?=- Random association 24um/250um peak (2) 60- 64 F5.3 --- Pr250 ?=- Random association 1.4GHz/250um peak (2) 66- 68 I3 --- SID350 ?=- submm SID for 350um peak (tablec2) 70- 73 F4.1 arcsec r350 ?=- Radial separation for 350um peak 75- 78 F4.1 --- L350 ?=- Likelihood ratio for 350um peak 80- 84 F5.3 --- Pm350 ?=- Random association 24um/350um peak (2) 86- 90 F5.3 --- Pr350 ?=- Random association 1.4GHz/350um peak (2) 92- 94 I3 --- SID500 ?=- submm SID for 500um peak (tablec3) 96- 99 F4.1 arcsec r500 ?=- Radial separation for 500um peak 101-104 F4.1 --- L500 ?=- Likelihood ratio for 500um peak 106-110 F5.3 --- Pm500 ?=- Random association 24um/500um peak (2) 112-116 F5.3 --- Pr500 ?=- Random association 1.4GHz/500um peak (2) 118-120 I3 --- SID870 ?=- submm SID for 870um peak (tablec4) 122-125 F4.1 arcsec r870 ?=- Radial separation for 870um peak 127-130 F4.1 --- L870 ?=- Likelihood ratio for 870um peak 132-136 F5.3 --- Pm870 ?=- Random association 24um/500um peak (2) 138-142 F5.3 --- Pr870 ?=- Random association 1.4GHz/870um peak (2)
Note (1): Since all radio sources and the FIDEL catalogue use the SIMPLE survey (Spitzer IRAC/MUSYC Public Legacy in ECDF-S; Gawiser et al. 2006, see Cat. J/ApJ/727/1/) as a positional prior, the SIMPLE IDs for each source are given. The only exceptions are 870um peaks with no identification in the matching catalogue; these peaks have simply been added to the catalogue with the SID referring to Table C4. Note (2): Poisson chance alignment probability (see section 3 of paper)
Byte-by-byte Description of file: tablec6.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential number, [CCC2011] NNN in Simbad 5- 7 I3 mJy S250 Maximum likelihood flux density at 250um 9- 10 I2 mJy e_S250 rms uncertainty on S250 (3) 12- 14 I3 mJy S350 Maximum likelihood flux density at 350um 16- 18 I3 mJy e_S350 rms uncertainty on S350 (3) 20- 22 I3 mJy S500 Maximum likelihood flux density at 500um 24- 26 I3 mJy e_S500 rms uncertainty on S500 (3) 28- 31 F4.1 mJy S870 Maximum likelihood flux density at 870um 33- 35 F3.1 mJy e_S870 rms uncertainty on S870 (3) 37- 40 F4.1 K Tobs ?=- Observed temperature (4) 42- 45 F4.1 K e_Tobs ?=- rms uncertainty on Tobs 47- 51 F5.1 [W/m2] STIR ?=- 10-1000um total IR fluxes (log10) (4) 53- 56 F4.2 --- e_STIR ?=- Fractional uncertainties in the total IR fluxes (5) 58- 61 F4.1 [Lsun] LTIR ?=- Total IR luminosity (log10) 63- 67 F5.3 --- z ?=- Redshift 68 A1 --- f_z [*)p] Type of redshift (6) 69 A1 --- r_z [PCID] Redshift reference (7) 70 A1 --- n_z [a] Note on redshift for source 82 (8)
Note (3): Uncertainties in flux densities have the estimated confusion noise (Table 1) added in quadrature to the instrumental noise. Note (4): The temperatures, Tobs and 10-1000um TIR fluxes, STIR are for observed-frame modified blackbody fits of the form Sν∝ν2.0Bν(Tobs) (rest-frame values shown in Fig. E1). Note (5): The fractional uncertainties in the TIR fluxes, DSTIR/STIR, are produced from the same Monte Carlo simulation used to measure uncertainties in the temperatures. SED fits are not provided for confused sources (see SEDs with `C' indicated in Fig. E1). When redshifts are available, the TIR luminosity, LTIR, is also calculated, but integrating in the rest frame, and using a more realistic SED fit from the library of Dale et al. (2001ApJ...549..215D) in order to estimate emission in the mid/far-IR (fits shown in Fig. E1). Note (6): Type of redshifts as follows: * = optical spectroscopic measurements p = optical photometric estimates ) = IRAC-based photometric estimates Note (7): Redshfit reference as follows: P = from the composite catalogue of Pascale et al. (2009ApJ...707.1740P) I = from Ivison et al. (2010MNRAS.402..245I) D = from Dunlop et al. (2010MNRAS.408.2022D) C = from Casey et al. (in preparation). Note (8): a = Source 82 has an optical photometric redshift limit z>2.8 from Dunlop et al. (2010MNRAS.408.2022D). Since this limit is significantly larger than its IRAC-based photometric redshift zi=1.6 we use the limit as the best estimate for this source.
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 08-Oct-2011
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