J/A+A/427/23 14.3um survey in the Lockman Hole (Fadda+, 2004)
ISOCAM observations in the Lockman Hole.
I. The 14.3 micron shallow survey: data reduction, catalogue, and optical
identifications.
Fadda D., Lari C., Rodighiero G., Franceschini A., Elbaz D., Cesarsky C.
Perez-Fournon I.
<Astron. Astrophys. 427, 23 (2004)>
=2004A&A...427...23F 2004A&A...427...23F
ADC_Keywords: Surveys ; Galaxies, IR
Mission_Name: ISO
Keywords: infrared: galaxies - surveys - catalogs
Abstract:
We present the image and catalogue of the 14.3µm hallow survey of
0.55 square degrees in the region of the Lockman Hole (10h 52m 03s,
+57° 21' 46", J2000). The data have been analyzed with the recent
algorithm by Lari et al. (2001, Cat. J/MNRAS/325/1173) conceived to
exploit ISO data in an optimal way, especially in the case of shallow
surveys with low redundancy. Photometry has been accurately evaluated
through extensive simulations and also the absolute calibration has
been checked using a set of 21 stars detected at 14.3µm, optical,
and near-IR bands.
Description:
The three images in fits format correspond to the flux map, coverage
map and signal-to-noise ratio map of the mosaic combining all the
images taken in the survey. The two tables contain the list of objects
detected in the mosaic. Table 3 contains the list of highly reliable
detections. Only a few false detections are expected in this list.
Table 4 contains the list of faint sources. This list contains an high
fraction of spurious sources and it is given only for the high
interest in studying faint and possibly distant sources.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table3.dat 109 259 LW3 source catalogue: highly reliable detections
table4.dat 102 197 LW3 source catalogue: faint detections
lhss_map.fit 2880 2711 Flux map
lhss_cov.fit 2880 2711 Coverage map
lhss_snr.fit 2880 2712 Signal-to-noise ratio map
--------------------------------------------------------------------------------
See also:
J/A+A/329/482 : ROSAT Deep Survey in the Lockman Hole (Hasinger+, 1998)
J/A+A/393/425 : Spectral analysis of Lockman Hole (Mainieri+, 2002)
J/A+A/398/901 : VLA survey at 6 cm in the Lockman Hole (Ciliegi+, 2003)
J/A+A/413/843 : 90 and 170um survey in Lockman Hole (Kawara+, 2004)
J/AJ/125/2521 : 2MASS6x survey of the Lockman Hole (Beichman+, 2003)
J/PASJ/53/445 : ASCA Deep survey in Lockman Hole Field (Ishisaki+, 2001)
Byte-by-byte Description of file: table3.dat table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- --- [ISOLHSS]
10- 22 A13 --- Name JHHMMSS+DDMMS
24- 25 I2 h RAh Right ascension (J2000)
26 A1 --- --- [:]
27- 28 I2 min RAm Right ascension (J2000)
29 A1 --- --- [:]
30- 35 F6.3 s RAs Right ascension (J2000)
37 A1 --- DE- Declination sign (J2000)
38- 39 I2 deg DEd Declination (J2000)
40 A1 --- --- [:]
41- 42 I2 arcmin DEm Declination (J2000)
43 A1 --- --- [:]
44- 48 F5.2 arcsec DEs Declination (J2000)
50- 52 F3.1 arcsec ePos Estimated astrometric error
54- 58 F5.2 mJy S14.3um 14.3µm flux
60- 63 F4.2 mJy e_S14.3um rms uncertainty on S14.3um
65 I1 --- o_S14.3um Number of frames of the detection
67- 69 I3 --- SNR Peak SNR of the detection
71- 75 F5.2 mag r'mag ? r' magnitude of the optical counterpart
in the Vega system
76 A1 --- n_r'mag [*] *: The source is saturated on the r' image
78- 81 I4 --- SNRr ? SNR of the optical detection computed
within an aperture of 1.35xFWHM
83- 86 F4.1 arcsec DRA ? ISO - optical offset in right ascension
88- 91 F4.1 arcsec DDE ? ISO - optical offset in declination
93 A1 --- l_Prob Limit flag on Prob
94- 97 F4.2 --- Prob ? Probability of random association
99-109 A11 --- Notes Notes about the object (1)
--------------------------------------------------------------------------------
Note (1): Notes about the object:
"star", if the object corresponds to a star (in the case the star
is saturated on our image, we report the Tycho2 position);
"pair", if the IR emission comes from a pair of interacting galaxies;
"bridge", in one case the IR emission seems to come out of a faint
bridge between two interacting galaxies;
"?" question mark, the source has not been detected in the deep survey
(Rodighiero et al., 2004, A&A, submitted).
--------------------------------------------------------------------------------
Acknowledgements: Dario Fadda, fadda(at)ipac.caltech.edu
(End) Patricia Vannier [CDS] 28-Sep-2004