2024AJ....167...10C

Query : 2024AJ....167...10C

2024AJ....167...10C - Astron. J., 167, 10 (2024/January-0)

The Breakthrough Listen Search for Intelligent Life: Technosignature Search of 97 Nearby Galaxies.

CHOZA C., BAUTISTA D., CROFT S., SIEMION A.P.V., BRZYCKI B., BHATTARAM K., CZECH D., DE PATER I., GAJJAR V., ISAACSON H., LACKER K., LACKI B., LEBOFSKY M., MacMAHON D.H.E., PRICE D., SCHOULTZ S., SHEIKH S., SHYNU VARGHESE S., MORGAN L., DREW J. and WORDEN S.P.

Abstract (from CDS):

The Breakthrough Listen search for intelligent life is, to date, the most extensive technosignature search of nearby celestial objects. We present a radio technosignature search of the centers of 97 nearby galaxies, observed by Breakthrough Listen at the Robert C. Byrd Green Bank Telescope. We performed a narrowband Doppler drift search using the turboSETI pipeline with a minimum signal-to-noise parameter threshold of 10, across a drift rate range of ±4 Hz s–1, with a spectral resolution of 3 Hz and a time resolution of ∼18.25 s. We removed radio frequency interference (RFI) by using an on-source/off-source cadence pattern of six observations and discarding signals with Doppler drift rates of 0. We assess factors affecting the sensitivity of the Breakthrough Listen data reduction and search pipeline using signal injection and recovery techniques and apply new methods for the investigation of the RFI environment. We present results in four frequency bands covering 1-11 GHz, and place constraints on the presence of transmitters with equivalent isotropic radiated power on the order of 1026 W, corresponding to the theoretical power consumption of Kardashev Type II civilizations.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Technosignatures - Search for extraterrestrial intelligence - Astrobiology - Radio astronomy - Galaxies

VizieR on-line data: <Available at CDS (J/AJ/167/10): table5.dat>

Simbad objects: 99

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Number of rows : 99
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-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
2 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
3 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
4 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
5 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 355 0
6 NAME Andromeda XI G 00 46 20.0 +33 48 05     17.5     ~ 130 0
7 Bol 520 GlC 00 50 42.4580241563 +32 54 58.623459583     15.50     ~ 53 1
8 NAME Andromeda XIV G 00 51 35.0 +29 41 49     15.9     ~ 132 0
9 NAME Pisces V G 00 59 29.8 +32 22 36     14.4     ~ 149 0
10 NAME Pisces I G 01 03 55.0 +21 53 06   16.18 14.3     ~ 404 0
11 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
12 NAME Andromeda X G 01 06 33.70 +44 48 15.8     16.6     ~ 125 1
13 NAME Andromeda II G 01 16 29.8 +33 25 09     11.7     ~ 402 0
14 NAME Andromeda XXIV G 01 18 30.0 +46 21 58     16.3     ~ 64 0
15 NAME Andromeda XXIII G 01 29 21.8 +38 43 08     14.2     ~ 88 0
16 NGC 584 Sy2 01 31 20.7231919800 -06 52 04.770287472 11.93 11.44 10.48     ~ 417 2
17 NGC 596 GiG 01 32 51.9046959816 -07 01 53.646821220   11.5       ~ 247 0
18 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
19 M 74 G 01 36 41.7451236624 +15 47 01.107512304 10.52 10.00 9.46 9.16   ~ 1934 1
20 NGC 636 EmG 01 39 06.5293238064 -07 30 45.475975296   12.5       ~ 196 0
21 NGC 672 GiP 01 47 54.4764771528 +27 25 58.020709728 12.04 11.60 11.09 10.81   ~ 304 0
22 NGC 720 Sy1 01 53 00.523 -13 44 19.25   12.4   10.36   ~ 536 0
23 NGC 821 AG? 02 08 21.1358498040 +10 59 41.832436704   12.210 11.310 10.739 9.744 ~ 592 0
24 UGCA 34 GiG 02 36 35.4662282832 +59 39 17.507008584   17       ~ 198 2
25 NGC 1052 Bla 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1397 2
26 UGCA 39 GiG 02 41 55.092 +59 36 14.73   16       ~ 360 1
27 NAME Cas 2 GiG 02 56 51.6359356200 +58 54 42.136879608           ~ 84 0
28 NGC 1172 GiP 03 01 36.0605047968 -14 50 11.499147312   12.87       ~ 155 0
29 NGC 1400 EmG 03 39 30.851 -18 41 17.25 12.48 12.01 10.96 10.45   ~ 309 1
30 NGC 1407 rG 03 40 11.904 -18 34 49.36   10.64 9.67 9.13   ~ 613 2
31 IC 342 AGN 03 46 48.514 +68 05 45.98   10.5       ~ 1579 1
32 UGCA 127 GiG 06 20 55.735 -08 29 44.17   13.0   12.4 12.1 ~ 66 1
33 LEDA 2807061 G 07 00 29.3 -04 12 30           ~ 43 1
34 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
35 NGC 2683 AGN 08 52 41.3064829584 +33 25 18.597681516 11.57 10.68 9.79 9.38   ~ 475 1
36 Z 264-88 AG? 09 16 02.0195908968 +52 50 42.051257412   14.0 13.2     ~ 141 0
37 NGC 2787 LIN 09 19 18.6046606656 +69 12 11.630716128   12.92 11.79     ~ 381 0
38 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
39 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
40 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
41 Z 36-12 H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 569 0
42 MCG-01-26-030 H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 789 2
43 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
44 NGC 3193 GiP 10 18 24.884 +21 53 38.32 12.29 11.83 10.88 12.19   ~ 301 1
45 NGC 3226 rG 10 23 27.0064075320 +19 53 54.674937420   14.32 13.33     ~ 440 1
46 NGC 3344 EmG 10 43 31.150 +24 55 19.99 10.38 10.54 9.86 9.71   ~ 434 1
47 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1504 0
48 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
49 NGC 4136 GiG 12 09 17.7035859024 +29 55 39.419783832   11.69       ~ 244 1
50 NGC 4168 Sy2 12 12 17.2692381408 +13 12 18.688208724 12.58 12.11 11.18     ~ 393 1
51 NGC 4239 GiG 12 17 14.9402986344 +16 31 52.731777360   13.5       ~ 126 0
52 NGC 4244 GiG 12 17 29.659 +37 48 25.60   10.71   9.99   ~ 582 1
53 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2512 4
54 NGC 4318 GiG 12 22 43.2906579576 +08 11 53.850831504   14.1       ~ 139 0
55 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 871 0
56 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1841 2
57 NGC 4387 GiG 12 25 41.6768484264 +12 48 37.804615956 13.42 13.01 12.12   10.87 ~ 409 1
58 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1126 1
59 NGC 4434 GiG 12 27 36.6771662112 +08 09 15.640206876   13.2       ~ 275 0
60 NGC 4458 GiP 12 28 57.5613938232 +13 14 30.946545276 13.27 12.93 12.07     ~ 429 2
61 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
62 NGC 4473 GiG 12 29 48.878 +13 25 45.55 11.60 11.16 10.20     ~ 671 1
63 NGC 4478 GiP 12 30 17.4160005576 +12 19 42.790577160 12.82 12.36 11.45   10.17 ~ 508 1
64 NGC 4486B GiG 12 30 31.985 +12 29 24.85   14.5       ~ 428 0
65 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
66 NGC 4489 GiG 12 30 52.2472748976 +16 45 31.866359004   13.2       ~ 264 0
67 NGC 4551 GiP 12 35 37.9542692328 +12 15 50.284593432 13.49 12.97 12.02     ~ 371 1
68 NGC 4559 H2G 12 35 57.6402869976 +27 57 35.859278160   10.46 10.01     ~ 667 1
69 NGC 4564 GiG 12 36 26.9869512504 +11 26 21.204472848 12.51 12.05 11.12     ~ 615 1
70 NGC 4600 GiG 12 40 22.9627113552 +03 07 03.939347640           ~ 97 1
71 NGC 4618 GiP 12 41 32.8976471760 +41 09 03.185175528 11.03 11.22 10.78     ~ 344 2
72 M 59 GiG 12 42 02.2581375168 +11 38 48.909507756   11.0       ~ 721 0
73 M 60 GiC 12 43 39.9708251934 +11 33 09.688174067   10.3       ~ 1395 1
74 NGC 4660 GiP 12 44 31.9814021280 +11 11 25.739106972   12.1       ~ 434 0
75 M 94 SyG 12 50 53.0737971432 +41 07 12.900884628 9.15 8.96 8.24 7.78   ~ 1476 2
76 M 64 SyG 12 56 43.696 +21 40 57.57   9.36 8.52     ~ 1010 2
77 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
78 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
79 NGC 5195 GiG 13 29 59.590 +47 15 58.06 10.76 10.45 9.55 9.31   ~ 816 3
80 NGC 5322 SyG 13 49 15.24 +60 11 25.8   11.3       ~ 432 2
81 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
82 NGC 5638 GiP 14 29 40.3717451400 +03 13 59.987811648 12.57 12.14 11.20     ~ 252 2
83 NGC 5813 LIN 15 01 11.2302420864 +01 42 07.141569696 12.00 11.45 10.46 10.06   ~ 673 2
84 NGC 5831 GiG 15 04 07.0002600408 +01 13 11.705607012   13.1   11.19   ~ 304 0
85 NGC 5845 GiG 15 06 00.7823239488 +01 38 01.704838596   13.8 11.20 12.06 9.94 ~ 403 0
86 NGC 5846 rG 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 891 2
87 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
88 NAME Hercules Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 379 1
89 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
90 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
91 NGC 6503 LIN 17 49 26.4207792072 +70 08 39.604132176 11.56 10.95 10.28 9.92   ~ 551 1
92 NAME Sgr dIG G 19 29 59.0 -17 40 41   15.5 13.6     ~ 323 1
93 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
94 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
95 MCG-02-53-003 G 20 46 51.7 -12 50 54 15.75 15.18 14.83 14.46   ~ 470 1
96 NGC 7454 GiG 23 01 06.5120307216 +16 23 18.484008792   13.6       ~ 157 0
97 NGC 7640 GiG 23 22 06.5746017072 +40 50 43.114729056   11.6       ~ 180 0
98 Z 431-72 G 23 28 35.2 +14 44 35 13.85 13.16 12.52     ~ 499 1
99 NAME Local Group GrG ~ ~           ~ 9325 0

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