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J/MNRAS/383/479 Radio obs. of optically obscured galaxies (Magliocchetti+, 2008)

The radio properties of optically obscured Spitzer sources. Magliocchetti M., Andreani P., Zwaan M.A. <Mon. Not. R. Astron. Soc., 383, 479-496 (2008)> =2008MNRAS.383..479M
ADC_Keywords: Galaxies, IR ; Infrared sources ; Radio sources Keywords: galaxies: active - galaxies: starburst - cosmology: observations - infrared: galaxies - radio continuum: galaxies Abstract: This paper analyses the radio properties of a subsample of optically obscured (R≥25.5) galaxies observed at 24um by the Spitzer Space Telescope within the First Look Survey. Ninety-six F24um≥0.35mJy objects out of 510 are found to have a radio counterpart at 1.4GHz, 610MHz or at both frequencies, respectively, down to ∼40 and ∼200uJy. IRAC photometry sets the majority of them in the redshift interval z~=[1-3] and allows for a broad distinction between active galactic nucleus (AGN) dominated galaxies (∼47 per cent of the radio-identified sample) and systems powered by intense star formation (∼13 per cent), the remaining objects being impossible to classify. The percentage of radio identifications is a strong function of 24-um flux: almost all sources brighter than F24um∼2mJy are endowed with a radio flux at both 1.4GHz and 610MHz, while this fraction drastically decreases by lowering the 24-um flux level. Description: Radio counterparts to optically obscured Spitzer sources were searched by cross-correlating the catalogue obtained by Magliocchetti et al. (2007MNRAS.375.1121M), with those provided by Condon et al. (2003, Cat. J/AJ/125/2411), Morganti et al. (2004, Cat. J/A+A/424/371) and Garn et al. (2007, Cat. J/MNRAS/376/1251). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 89 96 Radio counterparts to R>25.5 Spitzer sources
See also: J/AJ/125/2411 : SIRTF First-Look Survey (Condon+, 2003) J/A+A/424/371 : 1.4GHz First Look Survey (FLS) (Morganti+, 2004) J/AJ/131/2859 : Extragalactic First Look Survey: 24um data (Fadda+, 2006) J/MNRAS/376/1251 : 610MHz observations of Spitzer XFLS (Garn+, 2007) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 16 A16 --- Name Galaxy name (JHHMMSS.s+DDMMSS) 18- 21 F4.2 mJy F24 MIPS flux at 24um from Fadda et al. (2006, Cat. J/AJ/131/2859) 23 A1 --- l_F3.6 Limit flag on F3.6 24- 30 F7.2 uJy F3.6 IRAC flux at 3.6um (1) 32 A1 --- l_F4.5 Limit flag on F4.5 33- 39 F7.2 uJy F4.5 IRAC flux at 4.5um (1) 41 A1 --- l_F5.8 Limit flag on F5.8 42- 48 F7.2 uJy F5.8 IRAC flux at 5.8um (1) 50 A1 --- l_F8 Limit flag on F8 51- 57 F7.2 uJy F8 IRAC flux at 8um (1) 59 A1 --- l_F1.4G Limit flag on F1.4G 60- 64 F5.2 mJy F1.4G Flux at 1.4GHz 65 A1 --- r_F1.4G [M] Reference for F1.4G (2) 67- 71 F5.2 mJy F610M ?=- Flux at 610MHz from Garn et al. (2007, Cat. J/MNRAS/376/1251) 72 A1 --- n_F1.4G [*] Note on radio flux (3) 74- 78 A5 --- Class Class (4) 82 I1 --- zt [1/5] Likely redshift range (5) 84 A1 -- l_alpha Limit flag on alpha 85- 89 F5.2 --- alpha ?=- Radio spectral index (S(ν)∝ν)
Note (1): IRAC data from Lacy et al. (2005ApJS..161...41L) Note (2): All radio data at 1.4 GHz are taken from Condon et al. (2003, Cat. J/AJ/125/2411), except for those sources labelled with M, where the radio information comes from Morganti et al. (2004, Cat. J/A+A/424/371) Note (3): In all cases but J171143.9+600741 and J172005.0+592430 (marked with *) the reported radio fluxes correspond to the single radio source closest to the centre of 24-um emission Note (4): Class as follows: SB0 = star forming, F24≥0.6; F8/F24<0.1 LI = local interloper AGN0? = AGN0 ? AGN0 = AGN, F24≥0.6; F8/F24≥0.1 AGN1 = AGN, F24<0.6; F4.5/F3.6≥4.5/3.6 UNCL = unclassified, F24<0.6; F4.5/F3.6<4.5/3.6 or no IRAC information Note (5): Likely redshift range as follows: 1 = 0≤z≤1 2 = 1≤z≤1.5 3 = 1.5≤z≤3 4 = pure β>1 Power-Law (PL) AGN SED; no redshift assignment is possible in these cases 5 = no redshift estimate was possible in that case
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 19-Jan-2009
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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