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J/ApJ/697/182       Dust emission from unobscured AGN        (Thompson+, 2009)
Dust emission from unobscured active galactic nuclei.
    Thompson G.D., Levenson N.A., Uddin S.A., Sirocky M.M.
   <Astrophys. J., 697, 182-193 (2009)>
   =2009ApJ...697..182T
ADC_Keywords: Active gal. nuclei ; QSOs ; Spectra, infrared

Keywords: dust, extinction - galaxies: active - galaxies: nuclei -
          infrared: galaxies - radiative transfer

Abstract:
    We use mid-infrared (MIR) spectroscopy of unobscured active galactic
    nuclei (AGNs) to reveal their native dusty environments. We
    concentrate on Seyfert 1 galaxies, observing a sample of 31 with the
    Infrared Spectrograph aboard the Spitzer Space Telescope, and compare
    them with 21 higher luminosity quasar counterparts.

Description:
    We select Seyfert 1 galaxies from the Rush et al. (1993, Cat. VII/157)
    12 um survey, using 31 with archival low-resolution spectra from the
    Spitzer Space Telescope Infrared Spectrograph (IRS) in this study.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        80       52   Observations and galaxy data
table2.dat        18      416   Average type 1 AGN spectra
table3.dat        75       52   Spectral measurements


See also:
    VII/157 : The Extended 12um galaxy sample (Rush+ 1993)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units      Label     Explanations

   1-  3  A3    ---        Type      Seyferts 1 (Sy1) or quasar (QSO)
   5- 20  A16   ---        Name      Galaxy name
  22- 23  I2    h          RAh       Right ascension (J2000)
  25- 26  I2    min        RAm       Right ascension (J2000)
  28- 31  F4.1  s          RAs       Right ascension (J2000)
      33  A1    ---        DE-       Declination sign (J2000)
  34- 35  I2    deg        DEd       Declination (J2000)
  37- 38  I2    arcmin     DEm       Declination (J2000)
  40- 41  I2    arcsec     DEs       Declination (J2000)
  43- 47  F5.3  ---        z         Redshift
  49- 52  I4    pc/arcsec  Scale     Scale
  54- 61  I8    ---        AOR       Astronomical Observation Request number
  63- 72  A10 "YYYY/MM/DD" Obs.Date  Observation date
  74- 76  I3    s          TS        On-source exposure time in Short Low
  78- 80  I3    s          TL        On-source exposure time in Long Low


Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label     Explanations

   1-  6  F6.3  um      lambda    Rest wavelength (1)
   8- 12  F5.3  ---     S1Flux    Average Seyfert 1 scaled flux density (2)
  14- 18  F5.3  ---     QFlux     ? Average quasar scaled flux density (2)

Note (1): The wavelength scale is non-uniform and based on the original
          resolution, which decreases toward longer wavelengths.
Note (2): Normalized at 14 microns.



Byte-by-byte Description of file: table3.dat

   Bytes Format Units   Label     Explanations

   1-  3  A3    ---     Type      Seyferts 1 (Sy1) or quasar (QSO)
   5- 20  A16   ---     Name      Galaxy name
  22- 26  F5.2  ---     S10       Silicate strength at 10um
  28- 31  F4.1  um      lam10     Peak wavelength at 10um
  33- 37  F5.2  ---     S18       Silicate strength at 18um
  39- 42  F4.1  um      lam18     Peak wavelength at 18um
  44- 50  E7.2  mW/m2   [NeII]    ?=- [NeII] integrated flux at 12.8um
  52- 58  E7.2  mW/m2   F6.2      ?=- 6.2um PAH integrated flux
  60- 64  F5.3  Jy      F5        Integrated flux density at 5um
  66- 69  F4.2  Jy      F14       Integrated flux density at 14um
  71- 75  F5.2  Jy      F30       Integrated flux density at 30um


History:
    From electronic version of the journal
(End)                  Greg Schwarz [AAS], Patricia Vannier [CDS]    30-Nov-2011