SMOG Source Lists Delivery - January 2016 l=100.9 deg through 110.2 deg, b=0.0 to 3.0 deg 2,512,099 Catalog sources and 2,836,618 Archive sources Single frame photometry; Highly Reliable Catalog, More Complete Archive IRAC bands 1 (3.6 um), 2 (4.5 um), 3 (5.8 um), and 4 (8.0 um), bandmerged with 2MASS J, H, Ks This SMOG source list data release is comprised of IPAC Tables of the SMOG Catalogs and Archives for l=100.9 deg through 110.2 deg, b=0.0 to 3.0 deg. The data were taken in HDR mode: 12 sec and 0.6 sec FT and there are nominally 4 visits on the sky. Data processed by SSC pipeline processing version S18.5 were used to make the source lists. The format for the SMOG source lists is the same as the previous GLIMPSE (e.g. GLIMPSEI, GLIMPSEII, GLIMPSE3D, GLIMPSE360, Deep GLIMPSE) source lists These source lists are a result of doing photometry on each IRAC frame, averaging all detections of a single band (in-band merge), then doing the merging of all wavelengths, including 2MASS J, H, and Ks, at a given position on the sky (cross-band merge). The SMOG Catalog is a more reliable source list, and the Archive is a more complete list both in number of sources and flux measurements at each wavelength (less nulling of fluxes). The main differences between the Catalog and Archive are 1) fluxes brighter than a threshold that marks a nonlinear regime are nulled (removed) in the Catalog; 2) sources within 2" of another are culled (removed) from the Catalog, whereas the Archive allows sources as close as 0.5" from another; 3) sources within the PSF profile of a saturated source are culled from the Catalog but not the Archive; and 4) the Catalog has higher signal-to-noise thresholds and slightly more stringent acceptance criteria. The single frame photometry source list fluxes were extracted from the IRAC frames using a modified version of DAOPHOT (Stetson 1987) to perform the PSF fitting. See http://www.astro.wisc.edu/glimpse/glimpse_photometry_v1.0.pdf for more details about the point source extraction. The Cold Mission array-location-dependent photometric corrections (http://irsa.ipac.caltech.edu/data/SPITZER/docs/irac/calibrationfiles/locationcolor/) were applied to the source lists. When making the source lists, the area has been split into sub-areas that are approximately 4 degrees wide in longitude, all latitudes in this longitude range. There is a Catalog and an Archive for each sub-area. ===================================================================== 2. Files in the SMOG January 2016 Source Lists Release. ===================================================================== A. SMOG_source_lists_jan2016.README - This file. B. Catalog & Archive Files in IPAC Table Formats nominal approx longitude latitude Catalog No. of Archive No. of area covered area covered Filename Catalog Filename Archive (degrees) (degrees) Sources Sources ---------- ------------ ------------------ -------- ------------------ -------- 101-106 0 to +3.0 SMOGC_l101-106.tbl 1425538 SMOGA_l101-106.tbl 1617683 106-111 0 to +3.0 SMOGC_l106-111.tbl 1086561 SMOGA_l106-111.tbl 1218935 ------- ------- 2512099 2836618 C. Data Dictionary for IPAC Tables and a Notes file with basic information about some of the fields in the source list entry. SMOGC.tbl.dd - Data Dictionary for the Catalog IPAC Tables SMOGA.tbl.dd - Data Dictionary for the Archive IPAC Tables (exactly the same as SMOGC.tbl.dd) SMOG.notes - Notes on the source designation, close source flag, source quality flag and flux calculation method flag used in the source lists. D. Documentation The SMOG data document (http://www.astro.wisc.edu/glimpse/smog_dataprod_v1.0.pdf) describes the SMOG GLIMPSE processing, products and formats. Other existing documentation includes the SMOG.notes mentioned above, GLIMPSE Data Products and Quality Assurance Documents and a document describing in detail our point source photometry steps. See http://www.astro.wisc.edu/glimpse/docs.html