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J/ApJ/648/111       Chandra sources near AGNs                  (Levenson+, 2006)

Penetrating the deep cover of Compton-thick active galactic nuclei. Levenson N.A., Heckman T.M., Krolik J.H., Weaver K.A., Zycki P.T. <Astrophys. J., 648, 111-127 (2006)> =2006ApJ...648..111L
ADC_Keywords: Active gal. nuclei ; X-ray sources Keywords: galaxies: active - galaxies: Seyfert - X-rays: galaxies Abstract: We analyze observations obtained with the Chandra X-Ray Observatory of bright Compton-thick active galactic nuclei (AGNs), those with column densities in excess of 1.5x1024cm-2 along the lines of sight. We therefore view the powerful central engines only indirectly, even at X-ray energies. Using high spatial resolution and considering only galaxies that do not contain circumnuclear starbursts, we reveal the variety of emission AGNs alone may produce. Description: We observed the galaxies using the Chandra Advanced CCD Imaging Spectrometer (ACIS) back-illuminated S3 detector. We reprocessed all data from original Level 1 event files using Chandra Interactive Analysis of Observations (CIAO) software, version 3.2. (See the Chandra Science Center for details about Chandra data and standard processing procedures.) File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 84 7 Observations and galaxy data table9.dat 52 58 Additional sources
See also: B/chandra : The Chandra Archive Log (CXC, 1999-) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Galaxy Galaxy name 13- 22 A10 "YYYY/MM/DD" Obs.Date Observation Date 24- 28 I5 --- ObsID ? ObsID in Chandra log 30- 34 F5.2 ks ExpTime ? Exposure time 36- 42 E7.2 cm-2 NH Hydrogen column density 44- 49 F6.4 --- z Redshift 51- 55 F5.1 Mpc Dist Distance 57- 59 I3 pc/arcsec Scale Scale 61- 62 I2 h RAh ? Right ascension (J2000) (1) 64- 65 I2 min RAm ? Right ascension (J2000) (1) 67- 71 F5.2 s RAs ? Right ascension (J2000) (1) 73 A1 --- DE- Declination sign (J2000) (1) 74- 75 I2 deg DEd ? Declination (J2000) (1) 77- 78 I2 arcmin DEm ? Declination (J2000) (1) 80- 84 F5.2 arcsec DEs ? Declination (J2000) (1)
Note (1): Measured from peak Fe emission.
Byte-by-byte Description of file: table9.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Galaxy Galaxy name 13- 14 I2 h RAh Source right ascension (J2000) (1) 16- 17 I2 min RAm Source right ascension (J2000) (1) 19- 23 F5.2 s RAs Source right ascension (J2000) (1) 25 A1 --- DE- Source declination sign (J2000) (1) 26- 27 I2 deg DEd Source declination (J2000) (1) 29- 30 I2 arcmin DEm Source declination (J2000) (1) 32- 36 F5.2 arcsec DEs Source declination (J2000) (1) 38- 41 F4.1 10-4ct/s CR Net count rate 43 I1 10-4ct/s e_CR rms uncertainty on CR 45- 47 I3 arcsec Dist Distance from Galaxy in arcsec 49- 52 F4.1 kpc dr Distance from Galaxy in kpc
Note (1): Sources identified as [LHK2006] in Simbad.
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 16-Jul-2008
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

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