Astron. Astrophys. Suppl. Ser.
Volume 141, Number 2, January II 2000
|Page(s)||257 - 283|
|Published online||15 January 2000|
ISOCAM observations of the very deep IRAS 60 micron sample in the NEP region*
I. The data
Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy
2 Dipartimento di Astronomia dell'Università di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy
Send offprint request to: G. De Zotti, e-mail: firstname.lastname@example.org
Accepted: 26 October 1999
We present the results of ISO observations with the CAM LW3 filter, centered at m, of 94 out of the 98 galaxies comprising the complete m IRAS deep survey (IDS) sample in the north ecliptic polar region. In addition, we observed a source detected by IRAS at m and found to have particularly interesting properties. Altogether, 106 sources were detected with a signal to noise ratio and 69 with in the fields centered on the nominal positions of IRAS sources. Sixty-five detections (49 of which at ) are likely identifications of IRAS sources. Ten additional IRAS sources have possible ISOCAM counterparts. In 6 further cases, signals at the 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 , with mJy. The corresponding areal density is consistent with that found in previous surveys. Finding charts for all observed fields are given.
Key words: surveys / galaxies: photometry / galaxies: starburst / infrared: galaxies
© European Southern Observatory (ESO), 2000