J/ApJS/154/585     BATSE earth occultation deep sample results   (Harmon+, 2004)

The burst and transient source experiment (BATSE) earth occultation catalog of low-energy gamma-ray sources. Harmon B.A., Wilson C.A., Fishman G.J., Connaughton V., Henze W., Paciesas W.S., Finger M.H., McCollough M.L., Sahi M., Peterson B., Shrader C.R., Grindlay J.E., Barret D. <Astrophys. J. Suppl. Ser., 154, 585-622 (2004)> =2004ApJS..154..585H 2004ApJS..154..585H
ADC_Keywords: Gamma rays ; Occultations Keywords: catalogs - gamma rays: observations - methods: data analysis - occultations - surveys - X-rays: stars Abstract: The Burst and Transient Source Experiment (BATSE), aboard the Compton Gamma Ray Observatory (CGRO), provided a record of the low-energy gamma-ray sky (∼20-1000keV) between 1991 April and 2000 May (9.1yr). We performed a deep-sampling of 58 objects, plus a selection of 121 more objects, combining data from the entire 9.1yr BATSE data set. Source types considered were primarily accreting binaries, but a small number of representative active galaxies, X-ray-emitting stars, and supernova remnants were also included. The sample represents a compilation of sources monitored and/or discovered with BATSE and other high-energy instruments between 1991 and 2000, known sources taken from the HEAO 1 A-4 (1984ApJS...54..581L 1984ApJS...54..581L) and Macomb & Gehrels (1999ApJS..120..335M 1999ApJS..120..335M, Cat. J/ApJS/120/335) catalogs. Flux data for the deep sample are presented in four energy bands: 2040, 4070, 70160, and 160430keV. The limiting average flux level (9.1yr) for the sample varies from 3.5 to 20mcrab (5σ) between 20 and 430keV, depending on systematic error, which in turn is primarily dependent on the sky location. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table4.dat 143 179 BATSE Earth Occultation Deep Sample Results -------------------------------------------------------------------------------- See also: IX/20 : The Fourth BATSE Burst Revised Catalog (Paciesas+ 1999) J/ApJS/127/79 : BATSE occultation catalog of Gamma-Ray sources (Ling+, 2000) J/ApJS/134/385 : Supplement to the BATSE gamma-ray burst catalogs (Kommers+, 2001) Byte-by-byte Description of file: table4.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 13 A13 --- Name Object name (1) 15 A1 --- n_Name [d] Indicates a firm detection 17- 32 A16 --- AName Alternative SIMBAD or well-known name 34- 48 A15 --- Type Object type 50- 53 A4 --- Cat Assigned category (2) 54 A1 --- n_Cat [t] Transient source (3) 56- 61 F6.2 deg RAdeg Right Ascension in decimal degrees (J2000) (4) 63- 68 F6.2 deg DEdeg Declination in decimal degrees (J2000) (4) 70- 75 F6.2 deg GLON Galactic longitude (4) 77- 82 F6.2 deg GLAT Galactic latitude (4) 84- 89 F6.1 --- SigAC Detection significance after correction for systematic error 91- 96 F6.1 --- SigBC Detection significance before correction for systematic error 98-103 F6.1 --- F1 ? The 20-40keV band flux in milliCrabs (5) 105-107 F3.1 --- e_F1 ? Uncertainty in F1 (5) 109 A1 --- Flag [u] Indicates uncorrected 4-band fluxes (6) 111-116 F6.1 --- F2 ? The 40-70keV band flux in milliCrabs (5) 118-120 F3.1 --- e_F2 ? Uncertainty in F2 (5) 122-127 F6.1 --- F3 ? The 70-160keV band flux in milliCrabs (5) 129-131 F3.1 --- e_F3 ? Uncertainty in F3 (5) 133-138 F6.1 --- F4 ? The 160-430keV band flux in milliCrabs (4) 140-143 F4.1 --- e_F4 ? Uncertainty in F4 (4) -------------------------------------------------------------------------------- Note (1): Daily 4-band light curves in Crab units for the 83 category A & B sources (definite detections) and FITS files containing daily 20-100keV fluxes and 16-channel spectra for all 179 sources are available on http://gammaray.msfc.nasa.gov/batse/occultation/. Note (2): category based on the significance of detection after and before (in parentheses) correction for systematic error, as follows: A. (Definite detections) - Persistent sources have an average flux (9.1yr) that exceeded a threshold of 0.01photons/cm2/s in the 20-100keV band. - Transient sources exhibited at least one identifiable outburst with an average daily flux exceeding a threshold of 0.01photons/cm2/s in the 20-100keV band. - Typical category A sources show variability on timescales of at least hours to a few days, have a readily identifiable period by FFT, or variability that correlates well with behavior in other wavelength bands. B. (Definite detections) Sources with a 9.1yr average flux that exceeded 10σ, but with average flux less than 0.01photons/cm2/s in the 20-100keV band. C. (Possible detections) Sources with a 9.1yr average flux (20-100keV) with a significance ≥3σ and <10σ. N. (Nondetections) Sources with a 9.1yr average flux (20-100keV) of significance between ±3σ. I. (Indeterminate) Sources with a 9.1yr average flux (20-100keV) of significance less than -3σ, indicating confusion with nearby sources, or a poorly characterized systematic error in the surrounding sky region. Note (3): 'd' indicates a category A transient source, otherwise the source is considered a persistent source. Note (4): Listed positions should be used for reference only. These positions were used in the analysis, and many are based on historical measurements and are often only accurate to within a few arcminutes. Location errors of a few arcminutes do not significantly affect flux measurements with the BATSE Earth Occultation Technique (EOT). Note (5): The Crab relative fluxes, we found, are the most accurate method of displaying flux information for the deep sample in the absence of precise spectral fitting information for each source. Conversion factors from mCrab units to photon and energy fluxes are: --------------------------------------------------------------------- HER Energy Band log Average Multiplier Multiplier Channels (keV) (keV) (photons/cm2/s) (erg/cm2/s) --------------------------------------------------------------------- 7-11 20-40 28.3 8.508x10-6 7.567x10-12 11-18 40-70 52.9 2.323x10-6 5.830x10-12 18-36 70-160 105.8 5.514x10-7 8.079x10-12 36-75 160-430 262.3 6.261x10-8 6.887x10-12 --------------------------------------------------------------------- Note (6): Cases where the uncorrected flux was very small relative to the systematic flux correction. In these cases the uncorrected 4-band fluxes are reported because we believe they are closer to the true 9.1-year averages. See Section 2.4 for details -------------------------------------------------------------------------------- History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 07-Feb-2005
The document above follows the rules of the Standard Description for Astronomical Catalogues; from this documentation it is possible to generate f77 program to load files into arrays or line by line