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SWIRE-SDSS FIR LLFs

SWIRE-SDSS FIR LLFs. Well-Matched SWIRE MIPS 24/70/160 micron & SDSS Optical Coverage Particularly so at low (0<Z<0.25) redshifts Three Fields : Lockman Hole, ELAIS N1, ELAIS N2 ~ 22.6 deg 2 Total Number of SWIRE-SDSS Sources 24 micron > 0.5 mJy : 7,289 ( 0<Z<0.25 ) Sources

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SWIRE-SDSS FIR LLFs

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  1. SWIRE-SDSS FIR LLFs • Well-Matched SWIRE MIPS 24/70/160 micron & SDSS Optical Coverage • Particularly so at low (0<Z<0.25) redshifts • Three Fields : Lockman Hole, ELAIS N1, ELAIS N2 ~ 22.6 deg2 • Total Number of SWIRE-SDSS Sources • 24 micron > 0.5 mJy : 7,289 ( 0<Z<0.25 ) Sources • 70 micron > 15 mJy : 2,593 ( 0<Z<0.25 ) Sources • 160 micron > 75 mJy : 1,145 at ( 0<Z<0.25 ) Sources • Good Spec-Z Coverage from SDSS • SDSS Phot-Z also available based on Neural Networks • Further Miscellaneous Redshifts from NED • Overall Spec-Z % is ~25/35/55% at 24/70/160 micron and 0<Z<0.25

  2. 24 micron SWIRE-SDSS Imperial/IRAS FSC z-cat Shupe+ 98 (IRAS) Marleau+ 07 (Spitzer FLS) Rodighiero+ (sub) (Spitzer GOODS/VVDS)

  3. 70 micron SWIRE-SDSS Imperial/IRAS FSC z-cat Saunders+ ’90 (IRAS) Takeuchi+ 03 (IRAS)

  4. 160 micron SWIRE-SDSS Takeuchi+ 06 (ISO)

  5. SWIRE-SDSS FIR LLF • The homogeneity, quality, well-characterized limits as well as the sheer size of the SWIRE-SDSS database allow a relatively straighforward estimate of the FIR Local Luminosity Function down to flux levels order(s) of magnitude fainter than IRAS (albeit over a smaller area) • Ample opportunity to extend such a study • Higher redshift ( 0.25 < Z < 0.5 ) • New spectroscopic observations of complete samples • Herschel observations of same fields at 100-500 µm

  6. SWIRE-SDSS Workflow • Download Input Catalogs : SDSS (Pub) , IRSA (Pub) , IRSA (SWIRE) , SSC (Pub) , WSA (ESO),, NED (Pub) • Source Identification : based on position and flux matching, e.g. Nearest-Neighbor or Likelihood Ratio • Quality Control : based on several SWIRE & SDSS flags • Source Characterization : Star/Galaxy • Phot-z calculation following an optimized procedure (TBD skipped so far in favor of SDSS & NED phot-z) • Completeness & Reliability Analysis of all previous steps • Finally : Ad Hoc Science Analysis (e.g. 1/Vmax)

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