J/MNRAS/489/855 Extended narrow line regions in MaNGA AGN (Chen+, 2019)
The spatial extension of extended narrow line regions in MaNGA AGN.
Chen J., Shi Y., Dempsey R., Law D.R., Chen Y., Yan R., Bing L.,
Rembold S.B., Li S., Yu X., Riffel R.A., Brownstein J.R., Riffel R.
<Mon. Not. R. Astron. Soc., 489, 855-867 (2019)>
=2019MNRAS.489..855C 2019MNRAS.489..855C (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; Galaxies, Seyfert ; Optical
Keywords: galaxies: ISM - galaxies: nuclei - galaxies: Seyfert -
galaxies: statistics
Abstract:
In this work, we revisit the size-luminosity relation of the extended
narrow line regions (ENLRs) using a large sample of nearby active
galactic nuclei (AGNs) from the Mapping Nearby Galaxies at Apache
Point Observatory (MaNGA) survey. The ENLRs ionized by the AGN are
identified through the spatially resolved BPT diagram, which results
in a sample of 152 AGN. By combining our AGN with the literature
high-luminosity quasars, we found a tight log-linear relation between
the size of the ENLR and the AGN [OIII]λ5007Å luminosity
over four orders of magnitude of the [OIII] luminosity. The slope of
this relation is 0.42±0.02 which can be explained in terms of a
distribution of clouds photoionized by the AGN. This relation also
indicates that the AGNs have the potential to ionize and heat the gas
clouds at a large distance from the nuclei without the aids of
outflows and jets for the low-luminosity Seyferts.
Description:
As one of the three major programs of Sloan Digital Sky Survey IV
(SDSS-IV), MaNGA (Bundy et al. 2015ApJ...798....7B 2015ApJ...798....7B; Blanton et al.
2017AJ....154...28B 2017AJ....154...28B) uses the 2.5m Sloan Foundation Telescope (Gunn et
al. 2006AJ....131.2332G 2006AJ....131.2332G), aiming at obtaining IFU observations of over
10000 nearby galaxies from 2014 to 2020 (Drory et al.
2015AJ....149...77D 2015AJ....149...77D; Law et al. 2015AJ....150...19L 2015AJ....150...19L; Yan et al.
2016AJ....151....8Y 2016AJ....151....8Y, 2016AJ....152..197Y 2016AJ....152..197Y). Currently, more than half
of the sample has been observed, including 6430 unique targets, some
of them have been published as Data Release 15 (DR15) of SDSS-IV
(Aguado et al. 2019ApJS..240...23A 2019ApJS..240...23A).
The most standard way to select the AGN in the optical bands is
through the well-known BPT diagram (Baldwin, Phillips & Terlevich
1981PASP...93....5B 1981PASP...93....5B; Kauffmann et al. 2003MNRAS.346.1055K 2003MNRAS.346.1055K; Ho
2008ARA&A..46..475H 2008ARA&A..46..475H). It uses the emission line ratios
log[OIII]λ5007/Hβ versus log[NII]λ6583/Hα or
log[SII]λλ6717,31/Hα to classify the galaxies as
Seyferts, LINERs, star-forming, and composite galaxies based on their
dominant ionization mechanisms. We mainly focused on the [NII]-based
BPT diagram, which gives a better separation between the AGN and HII
region (Belfiore et al. 2016MNRAS.461.3111B 2016MNRAS.461.3111B), but using the
[SII]-based BPT diagram does not affect the main results.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 108 152 All the AGN candidates with extended narrow
line region
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See also:
J/AJ/154/86 : MaNGA catalog, DR15 (Wake+, 2017)
Byte-by-byte Description of file:table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- ID MaNGA identifier (NNNNN-NNNNN)
13- 22 F10.6 deg RAdeg Right ascension (J2000)
24- 32 F9.6 deg DEdeg Declination (J2000)
34- 43 F10.8 --- z Redshift
45- 48 F4.2 arcsec gPSF PSF in the g-band
50- 54 F5.2 [10-7W] logLOIII Logarithm of [OIII] luminosity
56- 61 F6.2 [10-7W] e_logLOIII ? Error on logLOIII
63- 67 F5.2 [10-7W] logL8um Logarithm of 8µm luminosity
69- 73 F5.2 [10-7W] logL1.4 ? Logarithm of 1.4GHz luminosity
75- 78 F4.2 kpc R15 ? ENLR size at a surface brightness cut of
10-15erg/s/cm2/arcsec-2
80- 84 F5.2 kpc e_R15 ? Error on R15
86- 90 F5.2 kpc R16 ? ENLR size at a surface brightness cut of
10-16erg/s/cm2/arcsec-2
92- 96 F5.2 kpc e_R16 ? Error on R16
98-102 A5 --- Resolved [True False] Indicates if the ENLR is
resolved
104-108 F5.2 --- RL Radio loudness
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History:
From electronic version of the journal
(End) Ana Fiallos [CDS] 02-Jan-2023