II/311 WISE All-Sky Data Release (Cutri+ 2012) ================================================================================ WISE All-Sky Data Release Cutri R.M., et al. =2012yCat.2311....0C =2012wise.rept....1C ================================================================================ ADC_Keywords: Infrared sources ; Photometry, infrared ; Surveys Mission_Name: WISE Description: The Wide-field Infrared Survey Explorer (WISE; see Wright et al. 2010AJ....140.1868W) is a NASA Medium Class Explorer mission that conducted a digital imaging survey of the entire sky in the 3.4, 4.6, 12 and 22um mid-infrared bandpasses (hereafter W1, W2, W3 and W4). WISE will produce and release to the world astronomical and educational communities and general public a digital Image Atlas covering the sky in the four survey bands, and a reliable Source Catalog containing accurate photometry and astrometry for over 300 million objects. The WISE Catalog and Atlas will enable a broad variety of research efforts ranging from the search for the closest stars and brown dwarfs to the most luminous galaxies in the Universe. WISE science data products will serve as an important reference data set for planning observations and interpreting data obtained with future ground and space-borne observatories, such as JWST. WISE was launched on 2009-12-14 from Vandenberg SLC2W. Acknowledging WISE in publications: Please include the following in any published material that makes use of the WISE data products: "This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration." File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file wise.sam 346 1000 Sample of the WISE All-Sky release (among 563,921,584 sources) -------------------------------------------------------------------------------- Note on wise.sam: the catalog described here is a subset of the full WISE catalog available from IRSA (http://irsa.ipac.caltech.edu/) with a selection of the columns of the full catalog. See also: http://wise2.ipac.caltech.edu/docs/release/allsky/expsup/ : Explanatory Supplement to the WISE All-Sky Data Release Products II/241 : 2MASS Catalog Incremental Data Release (IPAC/UMass, 2000) VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006) Byte-by-byte Description of file: wise.sam -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 19 A19 --- WISE WISE All-Sky Release Catalog name, based on J2000 position (designation) 21- 30 F10.6 deg RAdeg Right ascension (J2000) 32- 41 F10.6 deg DEdeg Declination (J2000) 43- 47 F5.3 arcsec eeMaj Semi-major axis of the error ellipse (6) 49- 53 F5.3 arcsec eeMin Semi-minor axis of the error ellipse (6) 55- 57 I3 deg eePA Position angle of the error ellipse (6) 60- 65 F6.3 mag W1mag ? WISE/W1 magnitude (3.35um) 67- 72 F6.3 mag W2mag ? WISE/W2 magnitude (4.6um) 74- 79 F6.3 mag W3mag ? WISE/W3 magnitude (11.6um) 81- 86 F6.3 mag W4mag ? WISE/W4 magnitude (22.1um) 88- 93 F6.3 mag Jmag ? 2MASS J magnitude (1.25um) 95-100 F6.3 mag Hmag ? 2MASS H magnitude (1.65um) 102-107 F6.3 mag Kmag ? 2MASS Ks magnitude (2.17um) 110-114 F5.3 mag e_W1mag ? Mean error on W1 magnitude (3.35um) 116-120 F5.3 mag e_W2mag ? Mean error on W2 magnitude (4.6um) 122-126 F5.3 mag e_W3mag ? Mean error on W3 magnitude (11.6um) 128-132 F5.3 mag e_W4mag ? Mean error on W4 magnitude (22.1um) 134-138 F5.3 mag e_Jmag ? Mean error on J magnitude 140-144 F5.3 mag e_Hmag ? Mean error on H magnitude 146-150 F5.3 mag e_Kmag ? Mean error on Ks magnitude 152-170 I19 --- cntr Unique identification number for the source 173-178 F6.1 --- snr1 ? Signal to noise ratio for W1 filter 180-188 E9.3 --- chi2W1 ? Reduced {chi}^2^ of the W1 profile fit 190-195 F6.1 --- snr2 ? Signal to noise ratio for W2 filter 197-205 E9.3 --- chi2W2 ? Reduced {chi}^2^ of the W2 profile fit 207-212 F6.1 --- snr3 ? Signal to noise ratio for W3 filter 214-222 E9.3 --- chi2W3 ? Reduced {chi}^2^ of the W3 profile fit 224-229 F6.1 --- snr4 ? Signal to noise ratio for W4 filter 231-239 E9.3 --- chi2W4 ? Reduced {chi}^2^ of the W4 profile fit 242 I1 --- nb Number of PSF components used simultaneously in the profile-fitting 244 I1 --- na [0/1] Active deblending flag (1 if a detection was split into multiple sources) 247-251 F5.3 --- sat1 [0/1] Saturated pixel fraction in W1 (w1sat) 253-257 F5.3 --- sat2 [0/1] Saturated pixel fraction in W2 (w2sat) 259-263 F5.3 --- sat3 [0/1] Saturated pixel fraction in W3 (w3sat) 265-269 F5.3 --- sat4 [0/1] Saturated pixel fraction in W4 (w4sat) 272-275 A4 --- ccf [DdPpHhOo0] Contamination and confusion flag, one per band (cc_flags) (1) 277 I1 --- ex [0/5] Extended source flag (ext_flg) (0 = consistent with point source) (7) 279-282 A4 --- var Variability flag, one per band (2) 290-293 I4 --- nW1 Frame detection count in W1 (w1nm) (4) 295-298 I4 --- mW1 Integer frame coverage in W1 (w1m) (5) 300-303 I4 --- nW2 Frame detection count in W2 (w2nm) (4) 305-308 I4 --- mW2 Integer frame coverage in W2 (w2m) (5) 310-313 I4 --- nW3 Frame detection count in W3 (w3nm) (4) 315-318 I4 --- mW3 Integer frame coverage in W3 (w3m) (5) 320-323 I4 --- nW4 Frame detection count in W4 (w4nm) (4) 325-328 I4 --- mW4 Integer frame coverage in W4 (w4m) (5) 330-339 I10 --- 2Mkey ? 2MASS PSC association (not identification!) 341-346 F6.3 arcsec d2M [0,3]? Distance separating the positions of the WISE source and associated 2MASS PSC source -------------------------------------------------------------------------------- Note (1): One character per band (W1/W2/W3/W4) that indicates that the photometry and/or position measurements of a source may be contaminated or biased due to proximity to an image artifact. D,d = Diffraction spike. Source may be a spurious detection of or contaminated by a diffraction spike from a nearby bright star on the same image P,p = Persistence. Source may be a spurious detection of or contaminated by a latent image left by a bright star H,h = Halo. Source photometry may be a spurious detection of or contaminated by the scattered light halo surrounding a nearby bright source O,o = (letter "o") Optical ghost. Source may be a spurious detection of or contaminated by an optical ghost image caused by a nearby bright source 0 = (number zero) Source is unaffected by known artifacts. Note (2): The variability flag is a 4-character string, one character per band, containing a value related to the probability that the source flux measured on the individual WISE exposures is variable. * value "n" indicates insufficient or inadequate data to make a determination (<6 exposures) * values 0 thru 9 indicate increasing probabilities of variation; - values 0-5 are most likely not variable, - values 6-7 are likely variables (but susceptible of false-positive variability) - values >7 have the highest probability of being true variables Note (4): number of individual exposures on which this source was detected with SNR>3 in the profile-fit measurement. This number can be zero for sources that are well-detected on the coadded Atlas Image, but too faint for detection on the single exposures. Note (5): number of individual exposures on which a profile-fit measurement of this source was possible. Note (6): the parameters of the error ellipse are computed from the 1-{sigma} in RA and Dec (sigra, sigdec) and the co-{sigma} sigradec with the formulae: {Delta} = (sigra^2^-sigdec^2^)^2^ + 4*sigradec^2^ eeMaj^2^ = 0.5*(sigra^2^+sigdec^2^+sqrt({Delta})) eeMin^2^ = 0.5*(sigra^2^+sigdec^2^-sqrt({Delta})) tan(eePA) = (eeMaj^2^-sigdec^2^)/(sigradec*|sigradec|) = (sigradec*|sigradec|)/(eeMaj^2^-sigra^2^) Conversely, the sigra/sigdec are given by: sigra^2^ = eeMaj^2^sin^2^(eePA) + eeMin^2^cos^2^(eePA) sigdec^2^ = eeMaj^2^cos^2^(eePA) + eeMin^2^sin^2^(eePA) Note (7): the values indicate the following morphology (2MASX = Cat. VII/233): 0 = consistent with a point-source, and not associated with a 2MASX source. 1 = the reduced chi2 of the profile fit (columns chi2W*) is >3.0 in at least one band. 2 = the source falls within the extrapolated isophotal footprint of a 2MASX source 3 = cases #1 and #2 (chi2W*>3.0 in one or more bands, and the source falls within the extrapolated isophotal footprint of a 2MASX source) 4 = source is within 5" of a 2MASX source 5 = case #1 and #4 (chi2W*>3.0 in one or more bands, and the source is within 5" of a 2MASX source) -------------------------------------------------------------------------------- History: From http://wise2.ipac.caltech.edu/docs/release/allsky/expsup/ Acknowledgements: Roc Cutri (IPAC/Caltech) ================================================================================ (End) Francois Ochsenbein, Laurent Cambresy [CDS] 12-Apr-2012