J/A+AS/141/257 ISOCAM obs. of very deep IRAS 60um sources (Aussel+, 2000)
ISOCAM observations of the very deep IRAS 60 micron sample in the NEP region. I. The data. Aussel H., Coia D., Mazzei P., De Zotti G., Franceschini A. <Astron. Astrophys. Suppl. Ser. 141, 257 (2000)> =2000A&AS..141..257A
ADC_Keywords: Surveys ; Galaxies, IR Keywords: surveys - galaxies: photometry - galaxies: starburst - infrared: galaxies Abstract: We present the results of ISO observations with the CAM LW3 filter, centered at λeff=14.3µm, of 94 out of the 98 galaxies comprising the complete 60µm IRAS deep survey (IDS) sample in the north ecliptic polar region. In addition, we observed a source detected by IRAS at 25µm and found to have particularly interesting properties. Altogether, 106 sources were detected with a signal to noise ratio ≥3 and 69 with S/N≥5 in the 3.2'x3.2' fields centered on the nominal positions of IRAS sources. Sixty-five ≥3σ detections (49 of which at ≥5σ) are likely identifications of IRAS sources. Ten additional IRAS sources have possible ≥3σ ISOCAM counterparts. In 6 further cases, signals at the 2-3σ level were detected close to the IRAS position. Indications that IRAS sources might actually be multiple (source confusion) were found in 4 IDS fields. On the whole, we confirm the reality of 69 to 90% of IDS sources. Appropriate statistical corrections for the bias affecting faint flux estimates were applied to ISOCAM data. Ten serendipitous sources were detected at ≥5σ, with S(14.3µm)≥3.5mJy. The corresponding areal density is consistent with that found in previous surveys. Finding charts for all observed fields are given. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 58 95 Observing log (IRAS deep survey targets) table2.dat 66 120 ISOCAM sources
See also: II/156 : IRAS Faint Source Catalog, |b| > 10, Version 2.0 (Moshir+ 1989) II/275 : IRAS Faint Source Reject Catalog (IPAC 1992) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 A4 --- [HH87] HH87 designation of the source (Hacking & Houck, 1987ApJS...63..311H) 6- 15 A10 --- IRAS IRAS-FSS designation (Cat. II/256 and II/275) 17- 18 I2 h RAh Right ascension (J2000) 20- 21 I2 min RAm Right ascension (J2000) 23- 26 F4.1 s RAs Right ascension (J2000) 28 A1 --- DE- Declination sign (J2000) 29- 30 I2 deg DEd Declination (J2000) 32- 33 I2 arcmin DEm Declination (J2000) 35- 36 I2 arcsec DEs Declination (J2000) 38- 40 I3 s Time Total time spent on each target 42- 49 A8 "DD/MM/YY" Date Observation date 51- 58 I8 --- TDT TDTOSN number identifying each observation in the ISO data archive
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 4 A4 --- [HH87] Name of the target, as in table1 5 A1 --- m_[HH87] [ABCD] ISOCAM source (2) 7- 8 I2 h RAh ? ISOCAM right ascension (J2000) 10- 11 I2 min RAm ? ISOCAM right ascension (J2000) 13- 17 F5.2 s RAs ? ISOCAM right ascension (J2000) 19 A1 --- DE- ISOCAM declination sign (J2000) 20- 21 I2 deg DEd ? ISOCAM declination (J2000) 23- 24 I2 arcmin DEm ? ISOCAM declination (J2000) 26- 29 F4.1 arcsec DEs ? ISOCAM declination (J2000) 31- 35 F5.1 arcsec Diff ? IRAS-ISOCAM position difference 37 A1 --- l_S14.3um Limit flag on S14.3um 38- 41 F4.1 Jy S14.3um ? ISOCAM flux density at 14.3um 44- 46 F3.1 Jy e_S14.3um ? rms uncertainty on S14.3um 48 A1 --- n_S14.3um ? [2-6] Note on S14.3um (1) 51- 54 F4.1 mJy SML ? Maximum likelihood value of the flux density for sources detected at ≥5σ 56- 58 F3.1 mJy e_SML ? rms uncertainty on SML 60- 66 E7.2 --- nc ? Mean number of chance objects (nc=π*Δ(IRAS-ISO)2N(>S14.3um))
Note (1): Notes as follows: 2 = The source is reliably detected. Its flux, however, is highly uncertain due to a cosmic ray impact near the source. 3 = The image of this source extends over the dead Col. 23; therefore part of its flux is lost. The given value includes a correction for the missing flux, based on the flux distribution in neighboring pixels. 4 = Although the flux is measured at a <3σ level, the signal is detected at >3σ, in the brightest pixel. 5 = Photometry based on the negative imprint produced by beam-switching; the positive one is at the edge of the field. 6 = Photometry based on the negative imprint; the positive one gives a less significant signal (1.7±0.7mJy). Note (2): Set to 'A', 'B', ... for the first, second, ... source detected in the IRAS deep field target. Source identified as [ACM2000] N-NNA in Simbad, e.g. source A of [HH87] 3-07 is [ACM2000] 3-07A in Simbad.
History: Prepared via OCR at CDS.
(End) James Marcout, Patricia Bauer [CDS] 03-Apr-2000
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