2020ApJ...903...91Y

Query : 2020ApJ...903...91Y

2020ApJ...903...91Y - Astrophys. J., 903, 91-91 (2020/November-2)

Galaxy and Mass Assembly (GAMA): a WISE study of the activity of emission-line systems in G23.

YAO H.F.M., JARRETT T.H., CLUVER M.E., MARCHETTI L., TAYLOR E.N., SANTOS M.G., OWERS M.S., LOPEZ-SANCHEZ A.R., GORDON Y.A., BROWN M.J.I., BROUGH S., PHILLIPPS S., HOLWERDA B.W., HOPKINS A.M. and WANG L.

Abstract (from CDS):

We present a detailed study of emission-line systems in the Galaxy And Mass Assembly (GAMA) G23 region, making use of Wide-field Infrared Survey Explorer (WISE) photometry that includes carefully measured resolved sources. After applying several cuts to the initial catalog of ∼41,000 galaxies, we extract a sample of 9809 galaxies. We then compare the spectral diagnostic Baldwin, Philips & Terlevich (BPT) classification of 1154 emission-line galaxies (38% resolved in W1) to their location in the WISE color-color diagram, leading to the creation of a new zone for mid-infrared "warm" galaxies located 2σ above the star-forming sequence, below the standard WISE active galactic nucleus (AGN) region. We find that the BPT and WISE diagrams agree on the classification for 85% and 8% of the galaxies as non-AGN (star-forming = SF) and AGN, respectively, and disagree on ∼7% of the entire classified sample. Thirty-nine percent of the AGNs (all types) are broad-line systems for which the [N II] and [Hα] fluxes can barely be disentangled, giving in most cases spurious [N II]/[Hα] flux ratios. However, several optical AGNs appear to be completely consistent with SF in WISE. We argue that these could be low-power AGNs, or systems whose hosts dominate the IR emission. Alternatively, given the sometimes high [O III] luminosity in these galaxies, the emission lines may be generated by shocks coming from super-winds associated with SF rather than AGN activity. Based on our findings, we have created a new diagnostic: [W1 - W2] versus [N II]/[Hα], which has the virtue of separating SF from AGNs and high-excitation sources. It classifies 3 to ∼5 times more galaxies than the classic BPT.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Galaxy evolution - AGN host galaxies - Infrared galaxies

VizieR on-line data: <Available at CDS (J/ApJ/903/91): table3.dat table4.dat>

Simbad objects: 101

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Number of rows : 101
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 1015 4
2 LEDA 706275 G 22 36 01.91 -31 20 40.8   17.817   17.125   ~ 4 0
3 2dFGRS TGS340Z165 G 22 36 15.43 -30 51 36.1   18.931   17.909   ~ 3 0
4 2dFGRS TGS414Z025 G 22 36 48.51 -32 27 42.5   18.563   17.209   ~ 3 0
5 GAMA 5197408 G 22 36 56.08 -34 00 02.4           ~ 2 0
6 GAMA 5188449 G 22 37 02.87 -30 41 37.4           ~ 2 0
7 GAMA 5200866 G 22 37 18.47 -33 15 45.3           ~ 2 0
8 GAMA 5196019 G 22 38 16.35 -34 17 08.9           ~ 2 0
9 GAMA 5108709 G 22 40 17.54 -30 51 27.0           ~ 2 0
10 2MASS J22410640-3357477 Sy1 22 41 06.4128019248 -33 57 47.807587152           ~ 4 0
11 2dFGRS TGS482Z184 G 22 42 06.63 -33 01 19.2   17.510   16.459   ~ 3 0
12 GAMA 5100400 G 22 42 07.44 -32 33 51.1           ~ 2 0
13 GAMA 5204947 G 22 42 38.53 -30 30 58.2           ~ 2 0
14 LEDA 718150 G 22 43 21.6729332952 -30 21 44.275548636   16.733   15.788   ~ 5 0
15 GAMA 5211450 G 22 43 46.45 -34 16 39.3           ~ 2 0
16 GAMA 5115102 G 22 44 04.74 -32 34 26.9           ~ 2 0
17 LEDA 675457 G 22 45 33.52 -33 30 22.3   17.934   16.883   ~ 4 0
18 GAMA 5119859 G 22 47 07.60 -31 35 37.1           ~ 2 0
19 2dFGRS TGS342Z076 G 22 47 43.34 -30 50 07.4   18.384   17.498   ~ 3 0
20 2dFGRS TGS342Z071 G 22 48 10.61 -30 19 59.1   18.984   17.642   ~ 3 0
21 2dFGRS TGS534Z014 G 22 48 50.05 -34 42 18.8   17.769   17.137   ~ 3 0
22 GAMA 5222747 G 22 48 54.65 -34 11 40.4           ~ 2 0
23 GAMA 5133213 G 22 49 20.73 -30 52 51.7           ~ 2 0
24 GAMA 5129662 G 22 49 26.01 -31 31 11.7           ~ 2 0
25 LEDA 721292 G 22 50 17.32 -30 06 35.9   18.484   17.313   ~ 4 0
26 GAMA 5228724 G 22 51 28.36 -32 05 10.3           ~ 2 0
27 GAMA 5241310 G 22 51 41.43 -33 47 18.1           ~ 2 0
28 2dFGRS TGS342Z233 G 22 53 01.14 -31 00 38.4   18.764   17.389   ~ 3 0
29 GAMA 5240292 AGN 22 53 04.51 -33 58 38.1           ~ 4 0
30 GAMA 5138489 G 22 53 09.53 -32 54 38.6           ~ 2 0
31 GAMA 5135645 G 22 53 10.78 -33 25 05.8           ~ 2 0
32 LEDA 718436 G 22 53 34.91 -30 20 07.7   18.083   16.753   ~ 4 0
33 LEDA 710251 G 22 53 40.19 -31 00 57.6   17.939   16.801   ~ 4 0
34 2dFGRS TGS536Z160 G 22 53 47.58 -34 33 34.1   18.819   17.703   ~ 3 0
35 GAMA J225417.87-334956.5 G 22 54 17.87 -33 49 56.6           ~ 3 0
36 2dFGRS TGS484Z157 G 22 54 19.30 -33 49 45.7   17.461   16.736   ~ 4 0
37 GAMA 5251443 G 22 54 30.34 -34 54 00.4           ~ 2 0
38 GAMA 5137338 G 22 55 19.15 -33 08 09.7           ~ 2 0
39 GAMA 5139540 G 22 55 35.08 -32 43 20.1           ~ 2 0
40 GAMA 5256068 G 22 55 36.98 -34 04 01.8           ~ 2 0
41 LEDA 674263 G 22 55 49.17 -33 35 30.3   17.448   16.331   ~ 4 0
42 GAMA J225619.13-304919.1 Sy1 22 56 19.1432201496 -30 49 19.245347940   18.64       ~ 8 0
43 2dFGRS TGS418Z045 G 22 56 57.05 -32 32 35.1   18.723   17.905   ~ 3 0
44 2dFGRS TGS537Z254 G 22 57 17.69 -35 00 01.6   18.570   17.489   ~ 3 0
45 LEDA 719118 G 22 57 29.88 -30 17 06.4           ~ 3 0
46 GAMA 5264991 G 22 57 51.50 -31 15 40.0           ~ 2 0
47 2dFGRS TGS537Z174 G 22 58 08.89 -34 47 48.2   18.069   17.215   ~ 3 0
48 2dFGRS TGS485Z164 G 22 58 42.42 -33 02 01.3   17.206   16.366   ~ 3 0
49 GAMA 5151978 G 23 00 43.16 -33 15 58.2           ~ 2 0
50 GAMA 5154420 G 23 01 08.22 -32 43 51.7           ~ 2 0
51 GAMA 5275222 AGN 23 01 25.23 -34 12 40.9           ~ 4 0
52 GAMA 5159722 G 23 01 30.21 -31 39 17.7           ~ 2 0
53 2dFGRS TGS419Z226 G 23 01 33.45 -31 00 38.2   17.867   16.910   ~ 3 0
54 GAMA 5154519 G 23 01 33.88 -32 42 20.2           ~ 2 0
55 2dFGRS TGS419Z014 G 23 01 42.72 -32 42 52.8   18.415   17.665   ~ 3 0
56 GAMA 5282867 G 23 01 57.92 -30 45 55.3           ~ 2 0
57 2dFGRS TGS485Z036 G 23 02 03.42 -33 51 22.3   18.749   18.000   ~ 3 0
58 GAMA 5158890 G 23 02 04.63 -31 49 21.0           ~ 2 0
59 GAMA 5155308 G 23 02 34.36 -32 32 40.6           ~ 2 0
60 2dFGRS TGS419Z002 G 23 02 37.75 -32 41 34.2   18.827   17.731   ~ 3 0
61 GAMA 5153375 G 23 02 42.81 -32 57 30.9           ~ 2 0
62 GAMA 5285888 G 23 03 00.41 -30 10 08.3           ~ 2 0
63 LEDA 164424 G 23 03 19.0398006936 -32 34 36.540229368   16.850   15.769   ~ 5 0
64 GAMA 5271798 G 23 03 39.89 -34 53 06.7           ~ 2 0
65 2dFGRS TGS420Z214 AGN 23 04 02.56 -31 11 29.2   17.837   16.897   ~ 4 0
66 LEDA 686978 G 23 04 21.94 -32 44 00.4   17.777   16.751   ~ 4 0
67 2dFGRS TGS419Z115 G 23 04 39.65 -31 21 52.3   19.270   17.926   ~ 3 0
68 2dFGRS TGS420Z045 G 23 05 11.67 -32 52 09.4   19.032   17.710   ~ 3 0
69 LEDA 198626 EmG 23 05 53.6811223272 -30 54 07.225045776   16.20   15.10   ~ 6 0
70 2dFGRS TGS345Z209 G 23 06 04.71 -30 57 44.6   17.742   16.899   ~ 3 0
71 GAMA 5286102 G 23 06 06.20 -30 07 55.1           ~ 2 0
72 2dFGRS TGS420Z147 G 23 06 16.96 -31 31 50.4   19.401   18.182   ~ 3 0
73 LEDA 709607 G 23 07 25.09 -31 03 57.7   18.331   17.025   ~ 4 0
74 GAMA 5310140 G 23 07 57.82 -30 11 35.7           ~ 2 0
75 2dFGRS TGS486Z107 Sy1 23 08 39.3705532872 -33 32 08.493147996   16.434 16.9 15.355   ~ 11 0
76 MCG-05-54-016 EmG 23 08 55.613 -30 51 28.43   14.75   13.75 14.2 ~ 74 1
77 GAMA 5305653 G 23 10 16.54 -31 05 17.6           ~ 2 0
78 GAMA 5317117 G 23 10 23.34 -33 45 53.6           ~ 2 0
79 GAMA 5312967 G 23 10 32.43 -34 41 28.1           ~ 2 0
80 2dFGRS TGS346Z204 G 23 10 50.65 -31 07 17.3   18.401   17.265   ~ 3 0
81 LEDA 198660 G 23 12 48.018 -31 55 23.08           ~ 4 0
82 LEDA 688772 G 23 13 44.78 -32 37 37.3   17.308   16.147   ~ 4 0
83 LEDA 698862 G 23 14 23.10 -31 57 14.9   17.798   16.770   ~ 4 0
84 LEDA 89414 G 23 15 00.44 -31 26 13.6   17.400   16.862   ~ 5 0
85 LEDA 700463 G 23 17 08.10 -31 50 16.8   17.367   16.147   ~ 4 0
86 GAMA 5162821 G 23 17 38.21 -30 55 32.4           ~ 2 0
87 2dFGRS TGS488Z259 G 23 17 52.17 -32 59 15.7   18.970   17.508   ~ 3 0
88 2MASS J23181255-3331051 AG? 23 18 12.5590510536 -33 31 05.143017468   18.318   17.084   ~ 4 0
89 2dFGRS TGS347Z158 G 23 18 21.81 -30 43 20.9   18.811   17.374   ~ 3 0
90 LEDA 673016 AG? 23 18 26.5114194288 -33 40 44.643191160           ~ 4 0
91 GAMA 5350683 G 23 19 02.26 -30 10 16.4           ~ 2 0
92 2dFGRS TGS348Z074 G 23 19 51.91 -30 48 17.0   18.025   17.299   ~ 3 0
93 GAMA 5346487 G 23 19 53.5 -32 08 44           ~ 2 0
94 2dFGRS TGS488Z169 G 23 20 36.18 -32 44 03.6   18.823   17.930   ~ 3 0
95 LEDA 706315 G 23 21 49.20 -31 20 29.8   18.113   17.124   ~ 4 0
96 GAMA 5355371 G 23 21 56.68 -34 13 07.3           ~ 2 0
97 GAMA 5367800 G 23 22 05.72 -31 31 05.9           ~ 2 0
98 2dFGRS TGS424Z228 G 23 22 09.77 -31 13 02.7   18.647   17.305   ~ 3 0
99 GAMA 5364072 AGN 23 22 09.84 -32 18 19.3           ~ 3 0
100 2dFGRS TGS540Z116 G 23 22 43.48 -34 54 00.6   18.488   17.356   ~ 3 0
101 2dFGRS TGS424Z184 G 23 23 57.87 -31 13 06.1   18.264   17.246   ~ 3 0

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