J/MNRAS/398/1165 AGN in nearby galaxies (Goulding+, 2009)
Towards a complete census of AGN in nearby galaxies:
a large population of optically unidentified AGN.
Goulding A.D., Alexander D.M.
<Mon. Not. R. Astron. Soc., 398, 1165-1193 (2009)>
=2009MNRAS.398.1165G 2009MNRAS.398.1165G
ADC_Keywords: Galaxies, nearby ; Active gal. nuclei ; Spectra, infrared
Keywords: galaxies: active - galaxies: evolution - galaxies: nuclei -
infrared: galaxies
Abstract:
Using Spitzer-infrared spectrograph (IRS) spectroscopy, we investigate
the ubiquity of active galactic nuclei (AGN) in a complete (∼94%),
volume-limited sample of the most bolometrically luminous galaxies
[LIR,8-1000um≥(0.3-20)x1010L☉] to D<15Mpc. Our analyses
are based on the detection of the high-excitation emission line
[NeV](λ14.32µm) (97.1eV) to unambiguously identify AGN
activity. We find that 17 of the 64 infrared (IR) bright galaxies in
our sample host AGN activity (∼27+86%), ≥50t of which are not
identified as AGN using optical spectroscopy.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 112 64 Catalogue of sources and derived quantities
table3.dat 138 64 Mid-IR spectral emission lines
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See also:
J/AJ/114/2353 : AGNs and QSOs behind nearby galaxies (Crampton+, 1997)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Galaxy Common galaxy name
14- 15 I2 h RAh Right ascension (J2000) (1)
17- 18 I2 min RAm Right ascension (J2000) (1)
20- 23 F4.1 s RAs Right ascension (J2000) (1)
25 A1 --- DE- Declination sign (J2000) (1)
26- 27 I2 deg DEd Declination (J2000) (1)
29- 30 I2 arcmin DEm Declination (J2000) (1)
32- 33 I2 arcsec DEs Declination (J2000) (1)
35- 38 F4.1 Mpc Dist Luminosity distance to source from the RBGS
(Sanders et al., 2003, Cat. J/AJ/126/1607)
40- 43 F4.2 kpc SH1 Projected spectral aperture in short-high (4)
44 A1 --- --- [x]
45- 48 F4.2 kpc SH2 Projected spectral aperture in short-high (4)
50- 53 F4.2 kpc LH1 Projected spectral aperture in long-high (4)
54 A1 --- --- [x]
55- 58 F4.2 kpc LH2 Projected spectral aperture in long-high (4)
60- 62 A3 --- MType Morphological classification from RC3 (de
Vaucouleurs et al., 1991, Cat. VII/155)
64- 68 F5.2 [solLum] logLIR logarithm of IR luminosity (8-1000um) from
RBGS (Cat. J/AJ/126/1607)
70- 77 A8 --- Class Optical spectral class from BPT
diagnostics (2)
78 A1 --- l_Ha/Hb Limit flag on Ha/Hb
79- 83 F5.2 --- Ha/Hb ? Halpha-to-Hbeta optical emission line ratio
85 A1 --- l_[OIII]/Hb Limit flag on [OIII]/Hb
86- 90 F5.2 --- [OIII]/Hb ? [OIII]-to-Hbeta optical emission line ratio
92- 95 F4.2 --- [SII]/Ha ? [SII]-to-Halpha optical emission line ratio
97-100 F4.2 --- [NII]/Ha ? [NII]-to-Halpha optical emission line ratio
102 A1 --- l_F[OIII] Limit flag on F[OIII]
103-110 F8.2 aW/m2 F[OIII] ? Observed [O III] flux (10-15erg/cm2/s)
112 I1 --- Ref ? References for published optical data (3)
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Note (1): 2MASS near-IR position of galactic nucleus
Note (2): Optical spectral class as follows:
S2 = Seyfert 2; broad-line subclass in parentheses
HII = star-forming galaxy and
L = LINER
Note (3): References as follows:
1 = Ho et al. (1997, Cat. J/ApJS/112/315
2 = Kewley et al. (2001, Cat. J/ApJS/132/37)
3 = Veilleux et al. (1995ApJS...98..171V 1995ApJS...98..171V)
4 = Veron-Cetty et al. (1986A&AS...66..335V 1986A&AS...66..335V)
5 = Moorwood et al. (1996A&A...308L...1M 1996A&A...308L...1M)
6 = Moustakas & Kennicutt (2006, Cat. J/ApJS/164/81)
7 = Kirhakos & Steiner (1990AJ.....99.1722K 1990AJ.....99.1722K)
8 = Ganda et al. (2006MNRAS.367...46G 2006MNRAS.367...46G)
9 = Barth et al. (2009ApJ...690.1031B 2009ApJ...690.1031B)
Note (4): short-high (SH) is the wavelength range 9.9-19.6µm,
and long-high (LH) is the wavelength range 18.7-32µm.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Galaxy Common galaxy name
14- 19 F6.3 um EWPAH Equivalent widths the 11.3um PAH feature
21- 27 F7.2 10-17W/m2 F[NeII] Flux of [NeII] 12.81um, 21.6eV (6)
29- 34 F6.2 10-17W/m2 e_F[NeII] ? rms uncertainty on e_F[NeII] (6)
36 A1 --- l_F[NeV] Limit flag on F[NeV] (5)
37- 42 F6.2 10-17W/m2 F[NeV] Flux at [NeV] 14.32um, 97.1eV (6)
44- 48 F5.2 10-17W/m2 e_F[NeV] ? rms uncertainty on F[NeV] (6)
50 A1 --- l_F[NeIII] Limit flag on F[NeIII] (5)
51- 57 F7.2 10-17W/m2 F[NeIII] Flux at [NeIII] 15.56um, 41.0eV (6)
59- 63 F5.2 10-17W/m2 e_F[NeIII] ? rms uncertainty on F[NeIII] (6)
65 A1 --- l_F[NeV]2 Limit flag on F[NeV]2 (5)
66- 71 F6.2 10-17W/m2 F[NeV]2 Flux at [NeV] 24.32um, 97.1eV (6)
73- 77 F5.2 10-17W/m2 e_F[NeV]2 ? rms uncertainty on F[NeV]2 (6)
79 A1 --- l_F[OIV] Limit flag on [OIV] (5)
80- 86 F7.2 10-17W/m2 F[OIV] Flux at [O IV] 25.89um, 54.9eV (6)
88- 93 F6.2 10-17W/m2 e_F[OIV] ? rms uncertainty on F[OIV] (6)
95 A1 --- l_F[FeII] Limit flag on F[FeII] (5)
96-101 F6.2 10-17W/m2 F[FeII] Flux at [Fe II] 25.99um, 7.9eV (6)
103-107 F5.2 10-17W/m2 e_F[FeII] ? rms uncertainty on [FeII] (6)
109 A1 --- l_F[SIII] Limit flag on F[SIII] (5)
110-116 F7.2 10-17W/m2 F[SIII] Flux at [S III] 33.48um. 23.3eV (6)
118-122 F5.2 10-17W/m2 e_F[SIII] ? rms uncertainty on F[SIII] (6)
124-130 F7.2 10-17W/m2 F[SIII]2 Flux at [S III] 34.82um, 8.2eV (6)
132-136 F5.2 10-17W/m2 e_F[SIII]2 ? rms uncertainty on F[SIII]2 (6)
138 A1 --- IRAGN? [Y] Mid-IR AGN? on the basis of
[NeV] 14.32um emission
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Note (5): 3σ upper limits are quoted for non-detections.
Note (6): in 10-14erg/cm2/s
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 21-Jan-2010