J/ApJS/141/23 JHK' imaging photometry of Seyfert 1. I. (Enya+, 2002)
JHK' imaging photometry of Seyfert 1 active galactic nuclei and quasars.
I. Multiaperture photometry.
Enya K., Yoshii Y., Kobayashi Y., Minezaki T., Suganuma M., Tomita H.,
Peterson B.A.
<Astrophys. J. Suppl. Ser. 141, 23 (2002)>
=2002ApJS..141...23E 2002ApJS..141...23E
ADC_Keywords: Active gal. nuclei ; QSOs ; Photometry, infrared
Keywords: galaxies: active - galaxies: photometry - galaxies: Seyfert -
infrared: galaxies - quasars: general
Abstract:
Near-infrared JHK' imaging photometry was obtained of 331 AGNs
consisting mainly of Seyfert 1 active galactic nuclei (AGNs) and
quasars (QSOs). This sample was selected to cover a range of radio
emission strength, redshift from z=0 to 1, and absolute B magnitude
from MB=-29mag to -18mag. Among low-z AGNs with z<0.3, Seyfert 1-1.5
AGNs are distributed over a region from a location typical of
"galaxies" to a location typical of "QSOs" in the two-color J-H to
H-K' diagram, but Seyfert 1.8-2 AGNs are distributed around the
location of "galaxies". Moreover, bright AGNs with respect to absolute
B magnitude are distributed near the location of "QSOs," while faint
AGNs are near the location of "galaxies". The distribution of such
low-z AGNs in this diagram was found to have little dependence on
their 6 cm radio flux. The near-infrared colors of the AGNs observed
with an aperture of 7 pixels (7.49") are more QSO-like than those
observed with larger apertures up to 15 pixels (16.1"). This aperture
effect may be explained by contamination from the light of host
galaxies within larger apertures. This effect is more prominent for
less luminous AGNs.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 71 331 List of target AGNs
table2a.dat 79 537 Photometry data in the J band
table2b.dat 79 538 Photometry data in the H band
table2c.dat 79 538 Photometry data in the K' band
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See also:
VII/224 : Quasars and Active Galactic Nuclei (10th Ed.) (Veron+ 2001)
J/ApJS/141/31 : JHK' imaging photometry of Seyfert 1. II. (Enya+, 2002)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Num Target AGN number
5- 19 A15 --- Name AGN name
21- 22 I2 h RAh Hour of Right Ascension (J2000)
24- 25 I2 min RAm Minute of Right Ascension (J2000)
27- 30 F4.1 s RAs Second of Right Ascension (J2000)
32 A1 --- DE- Sign of the Declination (J2000)
33- 34 I2 deg DEd Degree of Declination (J2000)
36- 37 I2 arcmin DEm Arcminute of Declination (J2000)
39- 40 I2 arcsec DEs Arcsecond of Declination (J2000)
42- 46 F5.3 --- z ? Redshift
48- 52 F5.1 mag BMAG ? Absolute B band magnitude from the
Veron-Cetty and Veron (1993ESOSR..13....1V 1993ESOSR..13....1V,
See Cat. VII/224) catalog
54- 57 A4 --- SType Seyfert type
59- 70 A12 --- AType AGN type (1)
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Note (1): AGN type:
Loud = AGN with fν(6cm)/fν(V)>100
Quiet = AGN with fν(6cm)/fν(V)<10
Intermediate = AGN in between Loud and Quiet;
- = the radio 6 cm flux is not tabulated in the
Veron-Cetty and Veron (1993ESOSR..13....1V 1993ESOSR..13....1V) catalog.
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Byte-by-byte Description of file: table2a.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Num Target AGN number
5- 19 A15 --- Name AGN name
21- 25 F5.2 mag J7mag ? 7 pix radius aperture J band mag (G1)
27- 30 F4.2 mag e_J7mag ? Total error in J7mag
32- 36 F5.2 mag J10mag ? 10 pix radius aperture J band mag (G1)
38- 41 F4.2 mag e_J10mag ? Total error in J10mag
43- 47 F5.2 mag J12mag ? 12 pix radius aperture J band mag (G1)
49- 52 F4.2 mag e_J12mag ? Total error in J12mag
54- 58 F5.2 mag J15mag ? 15 pix radius aperture J band mag (G1)
60- 63 F4.2 mag e_J15mag ? Total error in J15mag
65- 74 A10 "YYYY/MM/DD" Date ? Date of observation
76- 78 F3.1 arcsec FWHM ? The seeing Full-Width at Half-Maximum
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Byte-by-byte Description of file: table2b.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Num Target AGN number
5- 19 A15 --- Name AGN name
21- 25 F5.2 mag H7mag ? 7 pix radius aperture H band mag (G1)
27- 30 F4.2 mag e_H7mag ? Total error in H7mag
32- 36 F5.2 mag H10mag ? 10 pix radius aperture H band mag (G1)
38- 41 F4.2 mag e_H10mag ? Total error in H10mag
43- 47 F5.2 mag H12mag ? 12 pix radius aperture H band mag (G1)
49- 52 F4.2 mag e_H12mag ? Total error in H12mag
54- 58 F5.2 mag H15mag ? 15 pix radius aperture H band mag (G1)
60- 63 F4.2 mag e_H15mag ? Total error in H15mag
65- 74 A10 "YYYY/MM/DD" Date ? Date of observation
76- 78 F3.1 arcsec FWHM ? The seeing Full-Width at Half-Maximum
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Byte-by-byte Description of file: table2c.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Num Target AGN number
5- 19 A15 --- Name AGN name
21- 25 F5.2 mag K'7mag ? 7 pix radius aperture K' band mag (G1)
27- 30 F4.2 mag e_K'7mag ? Total error in K'7mag
32- 36 F5.2 mag K'10mag ? 10 pix radius aperture K' band mag (G1)
38- 41 F4.2 mag e_K'10mag ? Total error in K'10mag
43- 47 F5.2 mag K'12mag ? 12 pix radius aperture K' band mag (G1)
49- 52 F4.2 mag e_K'12mag ? Total error in K'12mag
54- 58 F5.2 mag K'15mag ? 15 pix radius aperture K' band mag (G1)
60- 63 F4.2 mag e_K'15mag ? Total error in K'15mag
65- 74 A10 "YYYY/MM/DD" Date ? Date of observation
76- 78 F3.1 arcsec FWHM ? The seeing Full-Width at Half-Maximum
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Global notes:
Note (G1): The pixel scale in this study is 1.07"/pix.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 09-Jul-2002