Cosmic Infrared Background: ISOPHOT FIR Source Counts at 90, 150 and 180 μm

Juvela, M.; Mattila, K.; Lemke, D.

doi:10.1007/3-540-45553-1_12

Cited by 18 publications

(30 citation statements)

References 15 publications

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“…Follow-up observations by radio interferometry (to determine the position) and by optical spectroscopy confirmed the nature of the brighter 170 JLm sources as redshifted galaxies (Sanders, private communication). Several smaller fields with low cirrus foreground (as checked by 100/lID surface brightness and HI column density) were surveyed at three wavelengths between 90 and 180JLm (Juvela et al 2000). Multiwavelength data were used to confirm the source detections, and the IR colours of the objects were used to discriminate cirrus knots from galaxies.…”

Section: Deep Surveys 251mentioning

confidence: 99%

ISOPHOT Surveys and the Extragalactic Background

Lemke

Ábrahám

Haas

et al. 2001

Symp. - Int. Astron. Union

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The higher spatial resolution and sensitivity of ISO allowed several extragalactic surveys to be extended to greater depth than obtained with IRAS. With the extended wavelength range deep surveys were performed for the first time at wavelengths up to ~ 200 μm. They favour galaxy models with strong evolution. With ISO's new capabilities the spectral energy distributions of larger samples of ULIRGs in the local universe and those of quasars and radio galaxies were determined. These data are applicable as templates to the more distant universe. Foreground components from zodiacal light and cirrus to the intracluster dust emission were studied in connection with their separation from the extragalactic background radiation.

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Section: Deep Surveys 251mentioning

confidence: 99%

ISOPHOT Surveys and the Extragalactic Background

Lemke

Ábrahám

Haas

et al. 2001

Symp. - Int. Astron. Union

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“…The cryogenic infrared space missions of the Infrared Astronomical Satellite (IRAS ) and Infrared Space Observatory (ISO) (see Genzel &Cesarsky 2000 and for reviews) provided important data on source counts at 60 m ( Hacking & Soifer 1991) and at 100 m ( Rowan-Robinson et al 1986), and more recently at 90 m ( Kawara et al 1998( Kawara et al , 2004Efstathiou et al 2000;Juvela et al 2000;Linden-Vornle et al 2000;Matsuhara et al 2000;Rodighiero et al 2003) and 170 m ( Kawara et al 1998( Kawara et al , 2004Puget et al 1999;Matsuhara et al 2000;Dole et al 2001). Mid-infrared ( MIR) observation with ISOCAM at 15 m ( Elbaz et al 1999) are also of great interest, since they are believed to resolve a significant fraction of the CIB into sources ( Elbaz 2002).…”

Section: Introductionmentioning

confidence: 99%

Far‐infrared Source Counts at 70 and 160 Microns in Spitzer Deep Surveys

Dole

Floc’h

Pérez‐González

et al. 2004

ASTROPHYS J SUPPL S

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We derive galaxy source counts at 70 and 160 m using the Multiband Imaging Photometer for Spitzer (MIPS) to map the Chandra Deep Field-South (CDF-S) and other fields. At 70 m, our observations extend upward about 2 orders of magnitude in flux density from a threshold of 15 mJy, and at 160 m they extend about an order of magnitude upward from 50 mJy. The counts are consistent with previous observations on the bright end. Significant evolution is detected at the faint end of the counts in both bands, by factors of 2-3 over no-evolution models. This evolution agrees well with models that indicate that most of the faint galaxies lie at redshifts between 0.7 and 0.9. The new Spitzer data already resolve about 23% of the cosmic far-infrared background at 70 m and about 7% at 160 m.

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“…The ISOPHOT EBL project aimed to determine the level of CIRB independently from the COBE data by making use of the better resolution of ISO which allows looking into the very deepest regions on the FIR sky in-between Galactic cirrus clouds. The FIR source counts from this project were reported in Juvela, Mattila & Lemke (2000). The CIRB surface brightness in three wavelengths 90, 150 and 180 µm was recently presented in Juvela et al (2009) -this constituted the first independent verification of the absolute CIRB level since the various COBE results.…”

Section: Introductionmentioning

confidence: 72%

A far-infrared survey at the North Galactic Pole - I. Nearby star-forming galaxies and effect of confused sources on source counts

Vaïsänen

Kotilainen

Juvela

et al. 2010

Monthly Notices of the Royal Astronomical Society

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We present follow‐up observations of the far‐infrared (FIR) sources at 90, 150 and 180 μm detected as part of the ISOPHOT EBL project, which has recently measured the absolute surface brightness of the cosmic infrared background (CIRB) radiation for the first time independently from COBE data. We have observed the fields at the North Galactic Pole region in the optical and near‐IR, and complement these data with Sloan Digital Sky Survey photometry, and spectroscopy where available, and present identifications of the 25 FIR sources which reach down to ∼150 mJy in all three ISOPHOT bands. Identifications are done by means of full spectral energy density fitting to all sources in the FIR error circle areas. Approximately 80 per cent are identified as star‐forming or star‐bursting galaxies at z < 0.3. We also find that more than half of the counterparts have disturbed morphologies, with signs of past or present interactions. However, only 20 per cent of all the sources are uniquely matched with a single galaxy –40 per cent are blends of two or more of these nearby star‐forming galaxies, while another 20 per cent are likely blends of nearby and fainter galaxies. The final 20 per cent are likely to be more luminous IR galaxies at higher redshifts. The blended sources have an effect on the FIR source counts. In particular, taking into account realistic confusion or blending of sources, the differential FIR counts move down by a factor of ∼1.5 and steepen in the 100 to 400 mJy range.

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Cosmic Infrared Background: ISOPHOT FIR Source Counts at 90, 150 and 180 μm

Cited by 18 publications

References 15 publications

ISOPHOT Surveys and the Extragalactic Background

ISOPHOT Surveys and the Extragalactic Background

Far‐infrared Source Counts at 70 and 160 Microns in Spitzer Deep Surveys

A far-infrared survey at the North Galactic Pole - I. Nearby star-forming galaxies and effect of confused sources on source counts

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