J/ApJ/661/L143 Star formation rate in Seyfert galaxies (Wang+, 2007)
Suppressed star formation in circumnuclear regions in Seyfert galaxies.
Wang J.-M., Chen Y.-M., Yan C.-S., Hu C., Bian W.-H.
<Astrophys. J., 661, L143-L146 (2007)>
=2007ApJ...661L.143W 2007ApJ...661L.143W
ADC_Keywords: Active gal. nuclei ; Models, evolutionary
Keywords: galaxies: active - galaxies: Seyfert - galaxies: starburst
Abstract:
Feedback from black hole activity is widely believed to play a key
role in regulating star formation and black hole growth. A
long-standing issue is the relation between star formation and the
fueling of the supermassive black holes in active galactic nuclei
(AGNs). We compile a sample of 57 Seyfert galaxies to tackle this
issue. We estimate the surface densities of gas and star formation
rates in circumnuclear regions (CNRs). Comparing them with the
well-known Kennicutt-Schmidt (K-S) law, we find that the star
formation rates (SFRs) in the CNRs of most Seyfert galaxies are
suppressed in this sample. Feedback is suggested to explain the
suppressed SFRs.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 76 57 The Seyfert Galaxy Sample
refs.dat 87 23 References
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See also:
J/ApJ/453/616 : JHKL photometry of 12 micron galaxy sample (Spinoglio+ 1995)
J/ApJ/613/682 : AGN central masses and broad-line region sizes (Peterson+ 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- Type [S12] Seyfert galaxy type (S1 or S2)
4- 14 A11 --- Name Object name
16- 20 F5.3 --- z Redshift
22- 25 I4 km/s FWHM ? Hβ FWHM/stellar velocity
dispersion (2)
27 A1 --- f_FWHM [b] Indicates FWHM from [O III] line
29- 33 F5.2 [10-7W] logL Log of 5100 Angstrom luminosity (3)
35- 39 A5 --- r_FWHM References for FWHM and LogL,
in refs.dat file
41- 44 F4.2 [solMass] logBH Log of black hole mass
46 A1 --- f_logBH [ac] Origin of LogBH (4)
48- 52 F5.2 solMass/yr dM/dt Black hole accretion rate
54- 57 F4.2 [solMass/pc2] logSig Log of gas surface density
59- 61 I3 [10+32W/kpc2] logPAH Log of 3.3 micron PAH surface brightness
(in 1039erg/s/kpc2)
63- 66 F4.2 kpc R Starburst region scale
68- 71 F4.2 [solMass/yr/kpc2] logUSFR Log of upper surface density of
star formation rates
73- 76 F4.2 [solMass/yr/kpc2] logLSFR Log of lower surface density of
star formation rates
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Note (2): Stellar velocity dispersion for Seyfert 2.
Note (3): Deduced from extrapolation of Fν∝ν-0.5 or
[OIII] (5007Å). In units of erg/s.
Note (4): Flag as follows:
a = the blackhole mass are directly taken from Peterson et al.
(2004, Ca. J/ApJ/613/682).
c = based on MBH-Mbulge relation:
Mbulge(F01475-0740)=-18.80;
Mbulge(NGC 3660)=-18.38
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference number
4- 22 A19 --- BibCode BibCode
24- 54 A31 --- Aut Author's name
57- 87 A31 --- Com Comments
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 15-Apr-2009