2017MNRAS.469.1186S

Query : 2017MNRAS.469.1186S

2017MNRAS.469.1186S - Mon. Not. R. Astron. Soc., 469, 1186-1204 (2017/July-3)

Deriving photometric redshifts using fuzzy archetypes and self-organizing maps - I. Methodology.

SPEAGLE J.S. and EISENSTEIN D.J.

Abstract (from CDS):

We propose a method to substantially increase the flexibility and power of template fitting-based photometric redshifts by transforming a large number of galaxy spectral templates into a corresponding collection of 'fuzzy archetypes' using a suitable set of perturbative priors designed to account for empirical variation in dust attenuation and emission-line strengths. To bypass widely separated degeneracies in parameter space (e.g. the redshift-reddening degeneracy), we train self-organizing maps (SOMs) on large 'model catalogues' generated from Monte Carlo sampling of our fuzzy archetypes to cluster the predicted observables in a topologically smooth fashion. Subsequent sampling over the SOM then allows full reconstruction of the relevant probability distribution functions (PDFs). This combined approach enables the multimodal exploration of known variation among galaxy spectral energy distributions with minimal modelling assumptions. We demonstrate the power of this approach to recover full redshift PDFs using discrete Markov chain Monte Carlo sampling methods combined with SOMs constructed from Large Synoptic Survey Telescope ugrizY and Euclid YJH mock photometry.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: statistical - techniques: photometric - galaxies: distances and redshifts - galaxies: distances and redshifts

VizieR on-line data: <Available at CDS (J/MNRAS/469/1186): tablea1.dat>

Simbad objects: 132

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Number of rows : 132
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 MCG-02-01-052 EmG 00 18 50.152 -10 21 41.49   13 13.60 14.13   ~ 68 3
2 MCG-02-01-051 Sy2 00 18 50.898 -10 22 36.49   14.81 14.33     ~ 154 3
3 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
4 NGC 337 EmG 00 59 50.090 -07 34 40.66 11.97 12.06 11.61 12.4 12.2 ~ 297 2
5 Z 436-30 LIN 01 20 02.654 +14 21 41.73   14.9       ~ 176 1
6 NGC 474 GiP 01 20 06.6870520512 +03 24 55.861973100 12.75 12.37 11.51 11.42 10.56 ~ 371 1
7 NGC 520 AGN 01 24 35.07120 +03 47 32.6760 12.41 12.24 11.42     ~ 528 3
8 NGC 584 Sy2 01 31 20.7231919800 -06 52 04.770287472 11.93 11.44 10.48     ~ 417 2
9 M 74 G 01 36 41.7451236624 +15 47 01.107512304 10.52 10.00 9.46 9.16   ~ 1934 1
10 NGC 660 Sy2 01 43 02.350 +13 38 44.45   12.02 11.16     ~ 588 2
11 ZW III 35 Sy2 01 44 30.516 +17 06 09.18   15.24 14.81     ~ 261 1
12 NGC 695 AGN 01 51 14.3479513536 +22 34 55.956444960   13.7       ~ 201 1
13 NGC 750 GiP 01 57 32.7005060832 +33 12 33.702836112   12.9       ~ 69 0
14 NGC 855 GiG 02 14 03.612 +27 52 37.82 14.19 13.56 12.75 12.40   ~ 236 1
15 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4897 2
16 NGC 1143 IG 02 55 09.7142741256 -00 10 40.248085584   13.2       ~ 154 1
17 NGC 1142 Sy2 02 55 12.2311509144 -00 11 00.807149472   15.42 14.41     ~ 350 1
18 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
19 NGC 1614 Sy1 04 34 00.027 -08 34 44.57   14.66 13.99     ~ 697 1
20 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
21 NGC 2388 AGN 07 28 53.4535009080 +33 49 08.554343196   14.7       ~ 145 2
22 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
23 NGC 2537 H2G 08 13 14.643 +45 59 23.25 12.18 12.50 11.69 11.66   ~ 314 2
24 NGC 2623 LIN 08 38 24.016 +25 45 16.29 14.10 13.99 13.36     ~ 533 2
25 IRAS 08572+3915 LIN 09 00 25.38288 +39 03 54.2988     16.66     ~ 450 1
26 UGC 4881 IG 09 15 55.5 +44 19 58   14.9       ~ 178 0
27 NGC 2798 GiG 09 17 22.95407 +41 59 58.9560 13.03 13.04 12.32     ~ 338 3
28 Mrk 116 AGN 09 34 02.1 +55 14 25           ~ 1179 1
29 Z 289-11 Sy2 09 35 51.6045544584 +61 21 11.589382368   15.20 15.50     ~ 617 2
30 NGC 3049 EmG 09 54 49.651 +09 16 17.90   13.04       ~ 346 1
31 NGC 3079 Sy2 10 01 57.8789863992 +55 40 47.449758324 11.57 11.54 10.86     ~ 1476 3
32 Z 240-22 H2G 10 16 28.2135145968 +45 19 17.164289028   15.0       ~ 52 0
33 NGC 3189 GiP 10 18 05.643 +21 49 54.98 12.60 12.12 11.15 11.14   ~ 422 2
34 NGC 3198 EmG 10 19 54.990 +45 32 58.88 10.83 10.87 10.33     ~ 946 1
35 NGC 3265 GiG 10 31 06.768 +28 47 47.98   13.87 13.54     ~ 175 1
36 Z 266-55 AGN 10 32 31.956 +54 24 03.53 13.29 13.66 13.13 12.71 12.27 ~ 381 1
37 NGC 3310 AGN 10 38 45.85707 +53 30 11.8940   12.45 12.15     ~ 809 1
38 M 95 GiP 10 43 57.7313485800 +11 42 13.301191332 10.71 10.51 9.73 9.48   ~ 1238 2
39 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1504 0
40 Z 267-15 AGN 10 49 05.0478242832 +52 20 07.788652296   14.6       ~ 94 0
41 NGC 3521 EmG 11 05 48.5680991376 -00 02 09.245076540 10.06 9.83 9.02 10.1 9.6 ~ 879 2
42 M 66 AGN 11 20 15.0 +12 59 29 9.85 9.65 8.92     ~ 1509 4
43 IC 691 AGN 11 26 44.31576 +59 09 19.5120   14.2       ~ 106 0
44 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 1015 4
45 NGC 3773 H2G 11 38 12.967 +12 06 42.91   13.1       ~ 219 0
46 Mrk 1450 AGN 11 38 35.6552554896 +57 52 26.636623644   15.5       ~ 130 1
47 Z 12-61 rG 11 42 12.253 +00 20 03.68   14.16 13.67 13.41 13.03 ~ 196 1
48 NGC 3870 H2G 11 45 56.634 +50 11 59.66   13.2       ~ 155 1
49 LEDA 37102 Sy1 11 51 33.3537570144 -02 22 21.893502576   17       ~ 179 0
50 Z 12-111 Sy1 11 52 37.19 -02 28 09.9   14.79   14.09 14.9 ~ 184 0
51 NGC 3938 GiG 11 52 49.4335936248 +44 07 14.697085116 10.80 10.90 10.38     ~ 566 1
52 NGC 4088 AGN 12 05 34.2230093952 +50 32 21.064017876   11.2       ~ 428 1
53 NGC 4125 GiP 12 08 06.017 +65 10 26.88 11.14 10.65 9.72     ~ 448 2
54 NGC 4138 Sy2 12 09 29.8011417048 +43 41 06.864140004 12.46 12.29 11.32 10.82   ~ 436 1
55 NGC 4168 Sy2 12 12 17.2692381408 +13 12 18.688208724 12.58 12.11 11.18     ~ 393 1
56 NGC 4194 rG 12 14 09.615 +54 31 35.93   13.79 13.30     ~ 467 2
57 Z 41-77 GiP 12 15 18.322 +05 45 40.28   14.9       ~ 95 0
58 M 99 H2G 12 18 49.625 +14 24 59.36 10.45 10.44 9.87     ~ 1004 2
59 M 100 AGN 12 22 54.9299993592 +15 49 20.296257960 10.04 10.05 9.35     ~ 1963 2
60 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 871 0
61 NGC 4387 GiG 12 25 41.6768484264 +12 48 37.804615956 13.42 13.01 12.12   10.87 ~ 409 1
62 NGC 4385 AGN 12 25 42.8099950872 +00 34 21.278141652   14.63 14.12 13.1 12.8 ~ 285 0
63 NGC 4450 LIN 12 28 29.5910654016 +17 05 05.976112020   10.90 10.08     ~ 587 2
64 NGC 4458 GiP 12 28 57.5613938232 +13 14 30.946545276 13.27 12.93 12.07     ~ 429 2
65 NGC 4473 GiG 12 29 48.878 +13 25 45.55 11.60 11.16 10.20     ~ 671 1
66 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
67 NGC 4536 H2G 12 34 27.12887 +02 11 16.3680 11.14 11.16 10.55 17.393   ~ 913 3
68 NGC 4550 GiP 12 35 30.5913588048 +12 13 14.921166792 12.97 12.56 11.68     ~ 558 1
69 NGC 4551 GiP 12 35 37.9542692328 +12 15 50.284593432 13.49 12.97 12.02     ~ 371 1
70 M 89 Sy2 12 35 39.80733343 +12 33 22.8308657 11.29 10.73 9.75     ~ 1037 2
71 NGC 4559 H2G 12 35 57.6402869976 +27 57 35.859278160   10.46 10.01     ~ 667 1
72 M 90 Sy2 12 36 49.8009839880 +13 09 46.523813040 10.56 10.26 9.54     ~ 953 1
73 M 58 Sy2 12 37 43.59747 +11 49 05.1240 10.80 10.48 9.66     ~ 1140 2
74 M 104 LIN 12 39 59.43185902 -11 37 22.9961800 9.51 9.55 8.00 8.05   ~ 1465 2
75 NGC 4625 SyG 12 41 52.7121819576 +41 16 26.115765780 12.74 12.92 12.35     ~ 383 2
76 M 59 GiG 12 42 02.2581375168 +11 38 48.909507756   11.0       ~ 721 0
77 NGC 4631 GiC 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 1154 3
78 NGC 4660 GiP 12 44 31.9814021280 +11 11 25.739106972   12.1       ~ 434 0
79 NGC 4670 AG? 12 45 17.150 +27 07 31.76   12.6 12.90     ~ 271 0
80 NGC 4676A AGN 12 46 10.05987 +30 43 54.6380           ~ 286 2
81 NGC 4725 Sy2 12 50 26.5716367992 +25 30 02.733090588   13.45 12.44     ~ 727 2
82 M 64 SyG 12 56 43.696 +21 40 57.57   9.36 8.52     ~ 1010 2
83 NGC 4860 GiG 12 59 03.9057463440 +28 07 25.326557148 14.84 14.7 13.24     ~ 157 0
84 NGC 4889 EmG 13 00 08.097 +27 58 37.29 12.93 13.0 11.30 11.652 10.906 ~ 742 1
85 IC 4051 EmG 13 00 54.4630403184 +28 00 27.502143300 15.04 14.8 13.50 13.003 12.305 ~ 218 0
86 NGC 4926 LIN 13 01 53.7302453520 +27 37 28.027389360   14.1       ~ 159 0
87 NGC 5033 Sy2 13 13 27.535 +36 35 37.14   11.01 12.03 9.73   ~ 909 1
88 IC 860 LIN 13 15 03.51 +24 37 07.8   14.8       ~ 236 0
89 Z 294-28 GiG 13 15 30.7370784024 +62 07 45.311082744   14.4       ~ 110 1
90 MCG+10-19-056 AGN 13 15 35.103 +62 07 28.43   15       ~ 120 1
91 M 63 LIN 13 15 49.2741893928 +42 01 45.728076108   9.34 8.59 8.35   ~ 1292 2
92 IC 883 SBG 13 20 35.37960 +34 08 21.8400   14.8       ~ 421 1
93 NGC 5104 AGN 13 21 23.11513 +00 20 33.3820   14.5   13.227   ~ 169 1
94 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
95 NGC 5195 GiG 13 29 59.590 +47 15 58.06 10.76 10.45 9.55 9.31   ~ 816 3
96 NGC 5256 PaG 13 38 17.81 +48 16 41.2   14.1 13.42     ~ 449 1
97 NGC 5257 H2G 13 39 52.92781 +00 50 24.0903   13.7 12.99     ~ 208 0
98 NGC 5258 GiP 13 39 57.6768310848 +00 49 51.009668076   13.8 12.83     ~ 186 0
99 Z 271-60 Sy2 13 44 42.1883001099 +55 53 13.596220922   15.68 14.91     ~ 958 3
100 Z 247-20 AGN 14 19 43.2275567784 +49 14 12.014867004   15.4       ~ 141 1
101 NGC 5653 AGN 14 30 10.4187147048 +31 12 55.568509596   12.7       ~ 184 1
102 Mrk 475 AGN 14 39 05.4743306976 +36 48 21.838203540   17.0       ~ 109 0
103 NGC 5713 GiG 14 40 11.528 -00 17 21.16 11.88 11.84 11.20     ~ 421 2
104 MCG+04-35-018 GiP 14 57 00.3205510752 +24 36 24.138336996   14.3 15.3     ~ 83 0
105 MCG+04-35-019 G 14 57 00.66647 +24 37 02.6720     15.7     ~ 76 1
106 UGC 9618 IG 14 57 01.0 +24 36 41           ~ 127 0
107 M 102 SyG 15 06 29.561 +55 45 47.91 11.12 10.74 9.89     ~ 578 2
108 Z 49-57 rG 15 13 13.1083645335 +07 13 32.099256087   15.5       ~ 252 1
109 NGC 5953 Sy2 15 34 32.40240 +15 11 37.7990   13.23 12.45     ~ 389 1
110 IC 1127 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 3090 4
111 Z 274-49 bCG 15 37 04.237 +55 15 47.60   15.2       ~ 136 0
112 NGC 5992 EmG 15 44 21.467 +41 05 11.08   14.2       ~ 80 1
113 NGC 6052 rG 16 05 12.8715178104 +20 32 32.607297132 13.01 13.44 13.00     ~ 362 2
114 NGC 6090 PaG 16 11 40.3 +52 27 21   14.0       ~ 446 1
115 NGC 6240 Sy2 16 52 58.9 +02 24 03   14.31 13.37     ~ 1734 2
116 LEDA 60189 LIN 17 23 21.96264 -00 17 00.8088   15.1       ~ 454 0
117 Z 448-20 G 20 57 23.62800 +17 07 44.5980   15.2       ~ 190 0
118 NGC 7331 LIN 22 37 04.0506038088 +34 24 56.800076508 10.65 10.35 9.48     ~ 1284 2
119 Z 514-93 AGN 22 41 12.275 +34 14 56.28   15.0       ~ 99 1
120 Z 453-62 AGN 23 04 56.514 +19 33 07.86   15.2       ~ 117 0
121 IC 5298 Sy2 23 16 00.6756811155 +25 33 24.081139422   15.0       ~ 205 0
122 NGC 7585 AG? 23 18 01.348 -04 39 01.07   12.46 18.7 11.23   ~ 106 0
123 NGC 7591 SyG 23 18 16.2727927344 +06 35 09.108933504   13.8       ~ 285 1
124 NGC 7592W Sy2 23 18 21.8077569718 -04 24 56.904279971     15.0     ~ 175 0
125 NGC 7592 IG 23 18 22.2 -04 24 57           ~ 177 0
126 NGC 7673 EmG 23 27 41.060 +23 35 20.18 12.84 13.17 12.76     ~ 282 2
127 NGC 7674 Sy1 23 27 56.6973043968 +08 46 44.253707772 13.84 13.92 13.23 12.64   ~ 738 2
128 NGC 7679 Sy2 23 28 46.6613717400 +03 30 41.013578196   13.2       ~ 289 1
129 Mrk 930 AGN 23 31 58.630 +28 56 50.51 14.27 15.04 14.63 14.56 14.46 ~ 147 0
130 NGC 7714 AGN 23 36 14.1257730600 +02 09 18.197422668   14.91 14.36     ~ 788 1
131 NGC 7771 GiG 23 51 24.880 +20 06 42.57 13.42 13.08 12.25     ~ 350 3
132 Z 455-59 AGN 23 51 26.731 +20 35 10.22   14.9       ~ 237 0

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