J/ApJS/105/93 H II Regions in Nearby Seyfert Galaxies (Evans+ 1996)
An Atlas of H II Regions in Nearby Seyfert Galaxies
Evans I.N., Koratkar A.P., Storchi-Bergmann T., Kirkpatrick H.,
Heckman T.M., Wilson A.S.
<Astrophys. J. Suppl. Ser. 105, 93 (1996)>
=1996ApJS..105...93E 1996ApJS..105...93E (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, Seyfert ; H II regions
Keywords: atlases - galaxies: Seyfert - H II regions
Abstract:
Continuum-subtracted Halpha images of 17 nearby Seyfert galaxies are
presented. The images are calibrated astrometrically using the Hubble
Space Telescope Guide Star Catalog reference frame. For each galaxy,
an inventory of H II regions detected using the COSMOS image
classifier and centroider is provided. Salient features of each galaxy
are described, including the distribution of the H II regions with
reference to the galaxy morphology. Relevant abundance data from the
literature are noted for each object. These images will find use as
finding charts for follow-up spectrophotometric investigations of
abundances, abundance gradients, and kinematics of H II regions in
active galaxies, and for detailed studies of H II region populations
in these objects.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 72 2608 Inventory H II regions
--------------------------------------------------------------------------------
Byte-per-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- NGC NGC number
9- 12 I4 --- Num H II region number
15- 16 I2 h RAh Hour of right ascension (J2000) (1)
18- 19 I2 min RAm Minute of right ascension (J2000) (1)
21- 25 F5.2 s RAs Second of right ascension (J2000) (1)
27 A1 --- DE- Sign of declination (J2000)
28- 29 I2 deg DEd Degree of declination (J2000) (1)
31- 32 I2 arcmin DEm Arcminute of declination (J2000) (1)
34- 37 F4.1 arcsec DEs Arcsecond of declination (J2000) (1)
39- 43 F5.1 arcsec2 Area Area of the H II region image (2)
45- 52 F8.1 --- Total Integrated pixel intensity (in digital number) (2)
54- 61 F8.2 --- Peak Peak pixel intensity (in digital number) (2)
63- 67 F5.2 --- e Ellipticity of the H II region image (2)
69- 72 I4 deg PA Position angle of the H II region image (2)
--------------------------------------------------------------------------------
Note (1): Equatorial coordinates (equinox J2000) of the H II region image center
of gravity in the Hubble Space Telescope Guide Star Catalog reference
frame.
Note (2): These data values are for the H II region image above the lowest
COSMOS threshold.
--------------------------------------------------------------------------------
Origin: AAS CD-ROM series, Volume 7, 1996 Lee Brotzman [ADS] 16-Jul-96
(End) [CDS] 10-Feb-1997