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J/ApJ/850/140       SDSS spectral analysis of IR-bright DOGs       (Toba+, 2017)

Ionized gas outflows in infrared-bright dust-obscured galaxies selected with WISE and SDSS. Toba Y., Bae H.-J., Nagao T., Woo J.-H., Wang W.-H., Wagner A.Y., Sun A.-L., Chang Y.-Y. <Astrophys. J., 850, 140 (2017)> =2017ApJ...850..140T
ADC_Keywords: Galaxies, IR; Spectra, optical; Redshifts; Active gal. nuclei; Velocity dispersion Keywords: catalogs ; galaxies: active ; galaxies: kinematics and dynamics ; infrared: galaxies Abstract: We present the ionized gas properties of infrared (IR)-bright dust-obscured galaxies (DOGs) that show an extreme optical/IR color, (i-[22])AB>7.0, selected with the Sloan Digital Sky Survey (SDSS) and Wide-field Infrared Survey Explorer (WISE). For 36 IR-bright DOGs that show [OIII]λ5007 emission in the SDSS spectra, we performed a detailed spectral analysis to investigate their ionized gas properties. In particular, we measured the velocity offset (the velocity with respect to the systemic velocity measured from the stellar absorption lines) and the velocity dispersion of the [OIII] line. We found that the derived velocity offset and dispersion of most IR-bright DOGs are larger than those of Seyfert 2 galaxies (Sy2s) at z<0.3, meaning that the IR-bright DOGs show relatively strong outflows compared to Sy2s. This can be explained by the difference in IR luminosity contributed from active galactic nuclei, LIR (AGN), because we found that (i) LIR (AGN) correlates with the velocity offset and dispersion of [OIII] and (ii) our IR-bright DOG sample has larger LIR (AGN) than Sy2s. Nevertheless, the fact that about 75% IR- bright DOGs have a large (>300km/s) velocity dispersion, which is a larger fraction compared to other AGN populations, suggests that IR-bright DOGs are good laboratories to investigate AGN feedback. The velocity offset and dispersion of [OIII] and [NeIII]λ3869 are larger than those of [OII]λ3727, which indicates that the highly ionized gas tends to show stronger outflows. Description: The IR-bright dust-obscured galaxies (DOG) sample for the spectral analysis was selected from an IR-bright DOG sample in Toba & Nagao (2016ApJ...820...46T). They selected 67 IR-bright DOGs with (i-[22])AB>7.0 and flux density at 22um>3.8mJy from the Sloan Digital Sky Survey (SDSS) spectroscopic catalog (see V/147) and Wide-field Infrared Survey Explorer (WISE) ALLWISE catalog (see II/328)). Among them, we narrowed down to 36 objects with 0.05<z<1.02 that clearly have [OIII] in their SDSS spectra. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table12.dat 290 36 [OIII] properties and energetics of WISE-SDSS spec DOGs (tables 1 and 2)
See also: II/328 : AllWISE Data Release (Cutri+ 2013) V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015) J/AJ/130/381 : Blueshifted [O III] emission (Boroson+, 2005) J/MNRAS/371/703 : MILES library of empirical spectra (Sanchez-Blazquez+, 2006) J/ApJ/663/81 : SED of hard X-ray selected AGN in XMDS (Polletta+, 2007) J/ApJ/713/970 : Low-resolution SED templates for AGNs & gal. (Assef+, 2010) J/ApJ/737/71 : The [OIII] emission line in SDSS AGNs (Zhang+, 2011) J/ApJ/769/95 : [NeV] or [NeIII] double peaked SDSS quasars (Barrows+, 2013) J/MNRAS/430/60 : Suzaku view of ionized outflows in AGN (Gofford+, 2013) J/A+A/562/A21 : AGN feedback from CO observations (Cicone+, 2014) J/ApJ/788/45 : Luminosity & redshift of gal. from WISE/SDSS (Toba+, 2014) J/ApJ/813/82 : z<0.06 broad-line AGN emission-line measures (Reines+, 2015) J/A+A/591/A28 : 2 QSOs SINFONI K-band datacubes (Carniani+, 2016) J/ApJ/840/21 : FIR data of IR-bright dust-obscured gal. (DOGs) (Toba+, 2017) : SDSS-III home page Byte-by-byte Description of file: table12.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Seq [1/36] Sequential identifier used in this paper 4- 17 A14 --- ObjID Truncated SDSS DR12 Object ID as used in the text 19- 20 I2 h RAh SDSS-DR12 Hour of Right Ascension (J2000) 22- 23 I2 min RAm Minute of Right Ascension (J2000) 25- 29 F5.2 s RAs Second of Right Ascension (J2000) 31 A1 --- DE- SDSS-DR12 Sign of Declination (J2000) 32- 33 I2 deg DEd SDSS-DR12 Degree of Declination (J2000) 35- 36 I2 arcmin DEm Arcminute of Declination (J2000) 38- 42 F5.2 arcsec DEs Arcsecond of Declination (J2000) 44- 47 I4 --- Plate SDSS plate number 49- 51 I3 --- Fiber SDSS fiberID 53- 57 I5 d MJD Modified Julian Date of last SDSS spectrum 59- 77 F19.17 --- zspec [0.05/1.1] Spectroscopic Redshift 79- 84 A6 --- Type AGN type ("type 2": 32 occurrences or "type 1") 86-102 F17.15 mag i-22 [7/8.1] SDSS i - WISE [22] color index, AB magnitude system 104-120 F17.14 [Lsun] logLIR [10.5/13.1] Log of IR luminosity (1) 122-138 F17.14 [10-7W] LogLbol [44.2/46.7] Bolometric luminosity; in erg/s units (2) 140 I1 --- w[OIII] [0/1]? Flag for [OIII] broad wing (3) 142-163 F22.16 km/s v[OIII] [-1485/891] Velocity offset, [OIII] 165-182 F18.14 km/s e_v[OIII] [20.5/570.2] Uncertainty in v[OIII] 184-202 F19.14 km/s sigmaO3 [76.7/1125.5] Dispersion, [OIII] 204-223 F20.16 km/s e_sigmaO3 [0.5/271.4] Uncertainty in sigmaO3 225-231 F7.4 [10-7W] logLHb [40.4/43]? Log of Hβ luminosity; in erg/s units 233-239 F7.5 [Msun] logMgas [6.9/9.4]? Log of ionized gas mass 241-247 F7.5 [km/s] logvout [2.1/3.6]? Log of flux-weighted intrinsic outflow velocity 249-255 F7.5 [pc] logRout [3.2/4.3]? Log of outflow radius 257-264 F8.6 [Msun/yr] logMout [0.7/2.7]? Log of mass outflow rate 266-272 F7.4 [10-7W] logEout [40.8/44.7]? Log of energy injection rate; in erg/s units 274-280 F7.4 dPa logPout [33.9/36.7]? Log of momentum flux, in dyne units 282-290 F9.6 --- Pout-b [0.2/16.2]? Momentum boost (4)
Note (1): The infrared luminosity at 8-1000um derived in Toba & Nagao (2016ApJ...820...46T). Note (2): The bolometric luminosity calculated by integrating the best-fit SED template at wavelengths longward of Lyα (see Section 4.1). Note (3): Flag for [OIII] broad wing as follows: 0 = there is no broad wing of [OIII] line; 1 = there is broad wing of [OIII] line (see Section 3.1). Note (4): The momentum boost is the ratio of the momentum flux (Pout) and the AGN radiative momentum output (LIR(AGN)/c).
History: From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 29-Jun-2018
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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