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J/ApJ/703/285   Radio and IR counterparts of BLAST sources in CDFS  (Dye+, 2009)

Radio and mid-infrared identification of BLAST source counterparts in the Chandra Deep Field South. Dye S., Ade P.A.R., Bock J.J., Chapin E.L., Devlin M.J., Dunlop J.S., Eales S.A., Griffin M., Gundersen J.O., Halpern M., Hargrave P.C., Hughes D.H., Klein J., Magnelli B., Marsden G., Mauskopf P., Moncelsi L., Netterfield C.B., Olmi L., Pascale E., Patanchon G., Rex M., Scott D., Semisch C., Targett T., Thomas N., Truch M.D.P., Tucker C., Tucker G.S., Viero M.P., Wiebe D.V. <Astrophys. J., 703, 285-299 (2009)> =2009ApJ...703..285D
ADC_Keywords: Photometry, millimetric/submm ; Surveys ; Cross identifications ; Radio sources ; Infrared sources ; Redshifts Keywords: cosmology: observations - galaxies: high-redshift - infrared: galaxies - submillimeter - surveys Abstract: We have identified radio and/or mid-infrared counterparts to 198 out of 350 sources detected at ≥5σ over ∼9deg2 centered on the Chandra Deep Field South by the Balloon-borne Large Aperture Submillimeter Telescope (BLAST) at 250, 350, and 500um. We have matched 114 of these counterparts to optical sources with previously derived photometric redshifts and fitted spectral energy distributions to the BLAST fluxes and fluxes at 70 and 160um acquired with the Spitzer Space Telescope. In this way, we have constrained dust temperatures, total far-infrared/submillimeter luminosities, and star formation rates for each source. Our findings show that, on average, the BLAST sources lie at significantly lower redshifts and have significantly lower rest-frame dust temperatures compared to submillimeter sources detected in surveys conducted at 850um. We demonstrate that an apparent increase in dust temperature with redshift in our sample arises as a result of selection effects. Finally, we provide the full multiwavelength catalog of ≥5σ BLAST sources contained within the complete ∼9deg2 survey area. Description: The 250, 350 and 500um observations analyzed in this paper were acquired during the BLAST 2006 flight launched on the 21st of December from McMurdo Station, Antarctica (BLAST06). In addition to the three BLAST fluxes, we also extracted flux from the SWIRE 70 and 160um Spitzer maps to improve constraints on our SED fitting. We have used two different catalogs for our radio counterparts. The first contains sources detected in the 1.4GHz map observed by Miller et al. (2008, Cat. J/ApJS/179/71) using the Very Large Array (VLA). For the second radio catalog, we used the shallower but wider 1.4GHz survey of (Norris et al. 2006, Cat. J/AJ/132/2409) acquired using the Australia Telescope Compact Array. Similar to the radio data, our list of 24um Spitzer counterparts comprises two separate catalogs. The first is taken from Magnelli et al. (2009A&A...496...57M) as part of the Far-Infrared Deep Extragalactic Legacy Survey (FIDEL; Dickinson et al. 2007AAS...211.5216D). The second 24um Spitzer catalog was taken from the Spitzer Wide-area InfraRed Extragalactic survey (SWIRE; Lonsdale et al. 2004ApJS..154...54L) third data release. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 119 39 Radio and 24um counterparts to the BLAST sources (≥5σ) in the FIDEL region table2.dat 119 188 Radio and 24um counterparts to the BLAST sources (≥5σ) in the BLAST region outside the FIDEL region table3.dat 60 350 The multi-wavelength catalog of ≥5σ BLAST sources in BLAST GOODS South (BGS)-Wide and BGS-Deep
See also: II/253 : Chandra Deep Field South: multi-colour data (Wolf+, 2008) II/290 : SWIRE Photometric Redshift Catalogue (Rowan-Robinson+, 2008) J/ApJS/191/222 : BLAST observations of the SEP field (Valiante+, 2010) J/ApJ/707/1779 : BLAST: the redshift survey (Eales+, 2009) J/ApJ/681/428 : BLAST sources in Galactic plane survey (Chapin+, 2008) J/ApJS/179/71 : VLA survey of the CDF-S I. (Kellermann+, 2008) J/AJ/132/2409 : Deep ATLAS radio observations of CDFS (Norris+, 2006) : SWIRE data home page Byte-by-byte Description of file: table[12].dat
Bytes Format Units Label Explanations
1- 3 I3 --- ID Internal source number 5- 12 F8.5 deg RAdeg ? Radio Right Ascension (J2000) 14- 22 F9.5 deg DEdeg ? Radio Declination (J2000) 24- 28 F5.2 mJy Frad ? Flux density at 1.4GHz 30 A1 --- l_Prad Limit flag on PRad 31- 37 F7.4 --- Prad ? Probability that radio counterpart is a chance alignment 39- 42 F4.1 arcsec Roff ? Radio radial offset 44- 51 F8.5 deg RA24deg ? 24um Right Ascension (J2000) 53- 61 F9.5 deg DE24deg ? 24um Declination (J2000) 63- 68 F6.3 mJy F24 ? Flux density at 24 microns 70 A1 --- l_P24 Limit flag on P24 71- 76 F6.4 --- P24 ? Probability that 24um counterpart is a chance alignment 78- 81 F4.1 arcsec 24off ? 24 micron radial offset 83- 86 F4.2 --- zRR ? Rowan-Robinson et al. (Cat. II/290) photometric redshift 88- 91 F4.2 --- z17 ? COMBO-17 photometric redshift (Cat. II/253) 93- 96 F4.1 K Temp ? Best fit temperature 98-100 F3.1 K E_Temp ? Upper uncertainty in Temp 102-104 F3.1 K e_Temp ? Lower uncertainty in Temp 106-113 F8.3 10+10Lsun LFIR ? Total far-IR/submillimeter luminosity 115-119 F5.2 --- chi2 ? The χ2 of SED fit
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 3 I3 --- ID Internal source number (1) 5- 9 A5 --- --- [BLAST] 11- 24 A14 --- BLAST Official BLAST identification (JHHMMSS+DDMMSS) 26- 30 F5.3 Jy F250 ? BLAST/250um flux density (2) 32- 36 F5.3 Jy e_F250 ? The 1sigma error in F250 (2) 38- 42 F5.3 Jy F350 ? BLAST/350um flux density (2) 44- 48 F5.3 Jy e_F350 ? The 1sigma error in F350 (2) 50- 54 F5.3 Jy F500 ? BLAST/500um flux density (2) 56- 60 F5.3 Jy e_F500 ? The 1sigma error in F500 (2)
Note (1): To make the list, a source must be detected at ≥5σ in at least one band. Note (2): Note that the fluxes quoted here have not been de-boosted and that errors are purely instrumental, neglecting the effects of source confusion (see Section 3.3 for further discussion).
History: From electronic version of the journal References: Eales et al. BLAST redshift survey 2009ApJ...707.1779E Cat. J/ApJ/707/1779
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 12-Oct-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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