- ID:
- ivo://CDS.VizieR/J/MNRAS/351/1290
- Title:
- ELAIS: final band-merged catalogue
- Short Name:
- J/MNRAS/351/1290
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The catalog represents the final band-merged European Large-Area ISO Survey (ELAIS) Catalogue at 6.7, 15, 90 and 175{mu}m, and the associated data at U, g', r', i', Z, J, H, K and 20cm. Details about the origin of the survey, the observations, data reduction and optical identification are described in the paper. In addition to fluxes in the radio, infrared and optical passbands, spectroscopic redshifts are tabulated, where available. For the N1 and N2 areas, the Isaac Newton Telescope ugriz Wide Field Survey permits photometric redshifts to be estimated for galaxies and quasars.
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- ID:
- ivo://CDS.VizieR/J/A+A/413/843
- Title:
- Far IR survey in the Lockman Hole
- Short Name:
- J/A+A/413/843
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the catalogs and source counts for the C_90_ (reference wavelength of 90um) and C_160_ (170um) bands, which were extracted from our analysis of an ISO deep far-infrared survey conducted as part of the Japan/UH ISO cosmology project. The total survey area is ~0.9deg^2^ in two fields within the Lockman Hole. The analysis consists of source extraction using the IRAF DAOPHOT package and simulations carried out by adding artificial sources to the maps to estimate the detection rate, the flux bias, the positional accuracy, and the noise.
- ID:
- ivo://CDS.VizieR/J/MNRAS/358/397
- Title:
- Final analysis of ELAIS 15-{mu}m
- Short Name:
- J/MNRAS/358/397
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the final analysis of the European Large Area Infrared Space Observatory (ISO) Survey (ELAIS) 15-{mu}m observations, carried out with the ISO Camera (ISOCAM) instrument on board the ISO. The data-reduction method, known as the Lari Method, is based on a mathematical model of the behaviour of the detector and was specifically designed for the detection of faint sources in ISOCAM/ISO Photopolarimeter (ISOPHOT) data. The method is fully interactive and leads to very reliable and complete source lists. The resulting catalogue includes 1923 sources detected with signal-to-noise ratio of >5 in the 0.5-100mJy flux range and over an area of 10.85deg^2^ split into four fields, making it the largest non-serendipitous extragalactic source catalogue obtained to date from the ISO data.
- ID:
- ivo://CDS.VizieR/J/A+A/427/773
- Title:
- ISOCAM 14.3{mu}m Deep Survey in Lockman Hole
- Short Name:
- J/A+A/427/773
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a new analysis of the ISOCAM 14.3{mu}m deep survey in a 20x20 square arcmin area in the Lockman Hole. This survey is intermediate between the ultra-deep surveys and the shallow surveys in the ELAIS fields. The data have been analyzed with the method presented by Lari et al. (2001, Cat. <J/MNRAS/325/1173>). We have produced a catalogue of 283 sources detected above the 5-{sigma} threshold, with fluxes in the interval 0.1-8mJy. The catalogue is 90% complete at 1mJy. The positional accuracy, estimated from the cross-correlation of infrared and optical sources, is around 1.5arcsec. The search for the optical counterparts of the sources in the survey is performed on a medium-deep r' band optical image (5{sigma} depth of r'=25), making use of the radio detections when available. The photometry has been checked through simulations and by comparing the data with those presented in a shallower and more extended ISOCAM survey in the Lockman Hole, that we have presented in a companion paper. Only 15% of the 14.3{mu}m sources do not have an optical counterpart down to r'=25mag. We use the 6.7/14.3{mu}m colour as a star/galaxy separator, together with a visual inspection of the optical image and an analysis of the observed Spectral Energy Distribution of the ISOCAM sources. The stars in the sample turn out to be only 6% of the sample. We discuss the 14.3{mu}m counts of extragalactic sources, combining our catalogue with that obtained from the shallower ISOCAM survey. The data in the two surveys are consistent, and our results fully support the claims in previous works for the existence of an evolving population of infrared galaxies, confirming the evident departure from non-evolutionary model predictions.
- ID:
- ivo://CDS.VizieR/J/MNRAS/325/1173
- Title:
- ISO ELAIS 15{mu}m survey
- Short Name:
- J/MNRAS/325/1173
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We develop a new data reduction technique for ISOCAM LW data and apply it to the European Large Area ISO Survey (ELAIS) LW3 (15-{mu}m) observations in the southern hemisphere (S1). This method, known as LARI technique and based on the assumption of the existence of two different time-scales in ISOCAM transients (accounting for either fast or slow detector response), is particularly designed for the detection of faint sources. In the ELAIS S1 field we obtain a catalogue of 462 15-{mu}m sources with signal-to-noise ratios >=5 and flux densities in the range 0.45-150mJy (filling the whole flux range between the Deep ISOCAM Surveys and the IRAS Faint Source Survey). The completeness at different flux levels and the photometric accuracy of this catalogue are tested with simulations. Here we present a detailed description of the method and discuss the results obtained by its application to the S1 LW3 data.
- ID:
- ivo://CDS.VizieR/J/A+A/372/364
- Title:
- ISO FIRBACK Source Catalog at 170um
- Short Name:
- J/A+A/372/364
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The FIRBACK (Far Infrared BACKground) survey is one of the deepest imaging surveys carried out at 170{mu}m with ISOPHOT onboard ISO, and is aimed at the study of the structure of the Cosmic Far Infrared Background. This paper provides the analysis of resolved sources. After a validated process of data reduction and calibration, we perform intensive simulations to optimize the source extraction, measure the confusion noise ({sigma}_c_=45mJy), and give the photometric and astrometric accuracies. 196 galaxies with flux S>3{sigma}_c_ are detected in the area of 3.89 square degrees. Counts of sources with flux S>4{sigma}_c_ present a steep slope of 3.3+/-0.6 on a differential ``logN-logS'' plot between 180 and 500mJy. As a consequence, the confusion level is high and will impact dramatically on future IR deep surveys. This strong evolution, compared with a slope of 2.5 from Euclidian geometry, is in line with models implying a strongly evolving Luminous Infrared Galaxy population. The resolved sources account for less than 10% of the Cosmic Infrared Background at 170{mu}m, which is expected to be resolved into sources in the 1 to 10mJy range.
- ID:
- ivo://CDS.VizieR/J/A+A/342/313
- Title:
- ISO HDF observations from PRETI method
- Short Name:
- J/A+A/342/313
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We have developed a new ISOCAM data reduction technique based on wavelet analysis, especially designed for the detection of faint sources in mid-infrared surveys. This method, the Pattern REcognition Technique for Isocam data (PRETI) has been used to reduce the observations of the Hubble Deep Field (HDF) and flanking fields with ISOCAM at 6.75 (LW2) and 15{mu}m (LW3) (Rowan-Robinson et al. 1997MNRAS.289..490R). Simulations of ISOCAM data allow us to test the photometric accuracy and completeness of the reduction. According to these simulations, the PRETI source list is 95% complete in the 15{mu}m band at 200{mu}Jy and in the 6.75{mu}m band at 65{mu}Jy, using detection thresholds which minimize the number of false detections. We detect 49 objects in the ISO-HDF at high confidence secure level, 42 in the LW3 filter, 3 in the LW2 filter, and 4 in both filters. An additional, less secure, list of 100 sources is presented, of which 89 are detected at 15{mu}m only, 7 at 6.75{mu}m only and 4 in both filters. All ISO-HDF objects detected in the HDF itself have optical or infrared counterparts, except for one from the additional list. All except one of the radio sources detected in the field by Fomalont et al. (1997ApJ...475L...5F) are detected with ISOCAM. Using a precise correction for the field of view distortion of ISOCAM allows us to separate blended sources. This, together with the fact that PRETI allows to correct data on the tail of cosmic rays glitches, lead us to produce deeper source lists than previous authors. Our list of bright sources agree with those of Desert et al. (1999A&A...342..363D) in both filters, and with those of Goldschmidt et al. (1997MNRAS.289..465G) in the LW3 filter, with systematic difference in photometry. ISO is an ESA project with instruments funded by ESA Member States (especially the PI countries: France, Germany, The Netherlands and the United Kingdom) and with participation of ISAS and NASA.
- ID:
- ivo://CDS.VizieR/J/A+A/359/865
- Title:
- ISOPHOT 170{mu}m Serendipity Survey I.
- Short Name:
- J/A+A/359/865
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Serendipity slew survey measurements were acquired with the ISOPHOT C200 detector installed on the ISO mission. The C200 detector is a 2x2 pixel array of stressed Ge:Ga with a pixel size of 89.4arcsec, and was used in conjunction with the C160 broad-band filter (reference wavelength 170{mu}m, width 89{mu}m). During the lifetime of the ISO mission, about 550 hours of measurements have been gathered with more than 12000 slews. From the slew data with low (100{mu}m<=15MJy/sr) cirrus background, 115 well-observed sources with a high signal to noise ratio in all detector pixels having a galaxy association were extracted. The 170{mu}m fluxes measured from the Serendipity slews have been put on an absolute flux level by using calibration sources observed additionally with the photometric mapping mode of ISOPHOT. For all but a few galaxies, the 170{mu}m fluxes are determined for the first time, which represents a significant increase in he number of galaxies with measured Far-Infrared (FIR) fluxes beyond the IRAS 100{mu}m limit.
- ID:
- ivo://CDS.VizieR/J/A+A/422/39
- Title:
- ISOPHOT 170{mu}m Serendipity Survey II.
- Short Name:
- J/A+A/422/39
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The ISOPHOT Serendipity Sky Survey strip-scanning measurements covering ~15% of the far-infrared (FIR) sky at 170{mu}m were searched for compact sources associated with optically identified galaxies. Compact Serendipity Survey sources with a high signal-to-noise ratio in at least two ISOPHOT C200 detector pixels were selected that have a positional association with a galaxy identification in the NED and/or Simbad databases and a galaxy counterpart visible on the Digitized Sky Survey plates. A catalog with 170{mu}m fluxes for more than 1900 galaxies has been established, 200 of which were measured several times.
- ID:
- ivo://CDS.VizieR/J/A+A/466/1205
- Title:
- ISOPHOT 170{mu}m Serendipity Survey. IV
- Short Name:
- J/A+A/466/1205
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The 170 micron far-infrared slew data of the ISOPHOT Serendipity Survey (ISOSS) has been assembled to a sky atlas with ~15% sky coverage. The redundant information of the brightnesss at slew crossings has been used to globally rescale and homogenize the slew brightnesses, leading to significantly increased photometric accuracy and reproducibility as well as the homogeneity of the maps. The corrected slew data were remapped with a constant grid size of 22.4arcsec onto 124 maps in galactic coordinates.
