2019ApJ...880L...4H

Query : 2019ApJ...880L...4H

2019ApJ...880L...4H - Astrophys. J., 880, L4-L4 (2019/July-3)

Follow-up of the neutron star bearing gravitational-wave candidate events S190425z and S190426c with MMT and SOAR.

HOSSEINZADEH G., COWPERTHWAITE P.S., GOMEZ S., VILLAR V.A., NICHOLL M., MARGUTTI R., BERGER E., CHORNOCK R., PATERSON K., FONG W., SAVCHENKO V., SHORT P., ALEXANDER K.D., BLANCHARD P.K., BRAGA J., CALKINS M.L., CARTIER R., COPPEJANS D.L., EFTEKHARI T., LASKAR T., LY C., PATTON L., PELISOLI I., REICHART D.E., TERRERAN G. and WILLIAMS P.K.G.

Abstract (from CDS):

On 2019 April 25.346 and 26.640 UT the Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo gravitational-wave (GW) observatory announced the detection of the first candidate events in Observing Run 3 that contained at least one neutron star (NS). S190425z is a likely binary neutron star (BNS) merger at dL = 156 ± 41 Mpc, while S190426c is possibly the first NS-black hole (BH) merger ever detected, at dL = 377 ± 100 Mpc, although with marginal statistical significance. Here we report our optical follow-up observations for both events using the MMT 6.5 m telescope, as well as our spectroscopic follow-up of candidate counterparts (which turned out to be unrelated) with the 4.1 m SOAR telescope. We compare to publicly reported searches, explore the overall areal coverage and depth, and evaluate those in relation to the optical/near-infrared (NIR) kilonova emission from the BNS merger GW170817, to theoretical kilonova models, and to short gamma-ray burst (SGRB) afterglows. We find that for a GW170817-like kilonova, the partial volume covered spans up to about 40% for S190425z and 60% for S190426c. For an on-axis jet typical of SGRBs, the search effective volume is larger, but such a configuration is expected in at most a few percent of mergers. We further find that wide-field γ-ray and X-ray limits rule out luminous on-axis SGRBs, for a large fraction of the localization regions, although these searches are not sufficiently deep in the context of the γ-ray emission from GW170817 or off-axis SGRB afterglows. The results indicate that some optical follow-up searches are sufficiently deep for counterpart identification to about 300 Mpc, but that localizations better than 1000 deg2 are likely essential.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): binaries: close - gravitational waves - methods: observational - stars: black holes - stars: neutron

Status at CDS : Examining the need for a new acronym.

Simbad objects: 125

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Number of rows : 125
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 Fermi bn170817908 gB 05 32 +50.1           ~ 25 0
2 SN 1993J SN* 09 55 24.77476 +69 01 13.7026   10.8 12.0     SNIIb 1420 1
3 UGC 8145 LIN 13 02 18.2908236912 +32 53 26.320931484   15.5       ~ 38 0
4 GrW 170817 GWE 13 09 48.0850 -23 22 53.343           ~ 2031 0
5 SN 2011fe SN* 14 03 05.711 +54 16 25.22   10.12 10.06     SNIa-norm 676 1
6 UGC 9233 LIN 14 24 34.9930461504 +35 16 47.372114568   15.4   13.60 12.96 ~ 31 0
7 MCG+06-32-070 SBG 14 35 18.382 +35 07 07.46   14.23 13.62 13.24 12.86 ~ 54 0
8 IC 4505 GiG 14 46 33.3700948488 +33 24 30.957072444   15.1       ~ 21 0
9 UGC 9831 SBG 15 22 44.8809633096 +29 46 10.526363868   15.09 14.67     ~ 49 0
10 2MASX J15324653+2822014 EmG 15 32 46.5837782640 +28 22 01.399815012   15.7       ~ 20 0
11 MCG+05-37-011 EmG 15 40 36.6357553080 +28 30 44.828304012   15.6       ~ 32 0
12 IC 4569 GiG 15 40 48.3768783360 +28 17 31.534084500   15.0       ~ 24 0
13 IC 4570 rG 15 41 22.5864042624 +28 13 47.027515548   15.1       ~ 38 0
14 IC 4572 rG 15 41 54.1961544816 +28 08 02.390629632   15.0       ~ 33 0
15 MCG+05-37-017 rG 15 43 46.0611701688 +28 24 54.908850816   15.1       ~ 40 0
16 UGC 10035 AGN 15 47 36.331 +26 03 49.56   14.9       ~ 42 0
17 NGC 6001 rG 15 47 45.9601957416 +28 38 30.116988312   14.4       ~ 53 0
18 UGC 10094 B LIN 15 56 03.8798 +24 26 53.438   15.4       ~ 97 1
19 IC 4587 LIN 15 59 51.6141497592 +25 56 26.318529096   15.5       ~ 60 1
20 LEDA 1717114 G 16 04 16.2712160664 +24 48 44.481429468           ~ 10 0
21 2MASX J16043557+2511233 LIN 16 04 35.6012557296 +25 11 23.790143544   15.4       ~ 32 0
22 NGC 6051 BiC 16 04 56.6684912064 +23 55 57.622768392   14.9       ~ 112 2
23 UGC 10217 G 16 07 39.6346325424 +22 20 31.176408012   16.0       ~ 8 0
24 UGC 10224 G 16 08 50.2393797456 +22 02 33.491180832   15.5       ~ 31 0
25 Z 137-45 G 16 09 06.4664629128 +24 52 13.545914556   15.5       ~ 20 0
26 NGC 6075 GiG 16 11 22.5792785256 +23 57 54.037976040   15.3       ~ 23 0
27 UGC 10260 G 16 11 57.8664001920 +20 55 24.256523568   15.4       ~ 15 0
28 Z 137-58 G 16 12 20.3675292720 +23 00 07.416822312   15.6       ~ 21 0
29 2MASX J16134601+2255079 LIN 16 13 46.0368406728 +22 55 08.430061620   15.5       ~ 21 0
30 MCG+04-38-042 GiG 16 14 57.8365659120 +21 56 18.299414328   15.3       ~ 12 0
31 NGC 6099 rG 16 15 35.5611386088 +19 27 12.257615988   14.6       ~ 34 0
32 Z 108-171 G 16 15 42.1333003128 +19 38 15.287458128   15.6       ~ 17 0
33 MCG+03-41-147 Sy2 16 16 45.6812675280 +19 31 16.880582640   15.5       ~ 15 0
34 UGC 10320 LIN 16 18 07.3585526136 +21 03 59.331627972   15.4       ~ 30 0
35 UGC 10360 LIN 16 23 11.3077138176 +16 55 57.309050784   15.1       ~ 19 0
36 NVSS J162415+201059 rG 16 24 15.2133651975 +20 11 00.732943990   15.2       ~ 29 0
37 IC 1219 rG 16 24 27.4437828600 +19 28 57.058529160   15.4       ~ 25 0
38 MCG+03-42-008 LIN 16 25 38.0897040600 +16 27 18.073752624   14.9       ~ 23 0
39 LEDA 1484188 G 16 28 52.4 +15 25 15           ~ 2 0
40 UGC 10412 G 16 29 36.1186416960 +15 39 30.406223880   15.0       ~ 18 0
41 NVSS J163050+161502 rG 16 30 50.1395204424 +16 15 02.868591168   15.5       ~ 35 0
42 SN 2019eff SN* 16 33 39.14 +13 54 36.6           SNIIb 5 0
43 MCG+02-42-007 G 16 39 26.386 +11 12 37.65   15.1       ~ 15 0
44 2MASX J16404021+1421053 G 16 40 40.2469298856 +14 21 05.069526192   15.70       ~ 17 0
45 2MASX J16412089+0854325 G 16 41 20.900 +08 54 32.58   15.3       ~ 12 0
46 2MASX J16440927+0726429 G 16 44 09.2944690368 +07 26 42.729269136   15.4       ~ 10 0
47 ESO 518-2 AGN 16 45 54.6328067736 -23 27 06.330074076   15.73   13.67   ~ 14 0
48 NGC 6219 G 16 46 22.5122930712 +09 02 16.183218804   15.2       ~ 10 0
49 ESO 586-2 EmG 16 47 24.44 -20 08 30.2   16.18   17.43 14.9 ~ 39 0
50 NGC 6224 GiG 16 48 18.5252559096 +06 18 44.050049208   15.0       ~ 15 0
51 NGC 6225 GiG 16 48 21.5937284328 +06 13 22.097176428   15.0       ~ 14 0
52 2MASX J16493316+0600585 GiG 16 49 33.1760140344 +06 00 58.605893208   15.3       ~ 11 0
53 NGC 6230 GiG 16 50 46.699 +04 36 17.05   15.5       ~ 19 0
54 IC 4621 G 16 50 51.1780172952 +08 47 01.554093816   15.0       ~ 22 0
55 2MASX J16505342-1500143 GiG 16 50 53.4559491864 -15 00 14.277387420           ~ 9 0
56 2MASX J16512165+0751442 G 16 51 21.6445890504 +07 51 43.891566948   15.6       ~ 3 0
57 NGC 6234 GiG 16 51 57.3477991416 +04 23 00.905213580   15.3       ~ 12 0
58 LEDA 889479 EmG 16 52 07.7279222448 -17 03 13.586566032   16.46   14.24   ~ 14 0
59 SN 2019eib SN* 16 52 39.451 +10 36 08.26           SNIa 3 0
60 NGC 6240 Sy2 16 52 58.9 +02 24 03   14.31 13.37     ~ 1640 2
61 2MASX J16530485-1617273 GiG 16 53 04.8781407936 -16 17 27.731210748           ~ 9 0
62 2MASX J16532408+0414105 GiG 16 53 24.0938981640 +04 14 10.857103944   15.4       ~ 10 0
63 IC 4627 G 16 54 08.7594361656 -07 38 06.981846648           ~ 12 0
64 2MASX J16542402-0953212 EmG 16 54 24.0337546992 -09 53 20.786386668   16.55       ~ 59 0
65 2MASX J16545364-1657072 G 16 54 53.6461502112 -16 57 07.056805248   15.34   13.76   ~ 12 0
66 2MASX J16552449-0715255 GiG 16 55 24.5187501264 -07 15 25.636701600   17.12   15.20   ~ 14 0
67 2MASX J16564688-0142052 G 16 56 46.8985306488 -01 42 05.568222456           ~ 8 0
68 2MASX J16571426-0613510 GiG 16 57 14.2852996992 -06 13 51.152402748   16.27   14.06   ~ 14 0
69 6dFGS gJ165726.8-101128 GiG 16 57 26.818 -10 11 27.95   17.38   15.28   ~ 15 0
70 2MASX J16580128-0149216 GiG 16 58 01.2816760872 -01 49 21.287390952           ~ 11 0
71 ESO 586-6 GiG 16 58 05.936 -21 16 22.10   14.34   12.69   ~ 18 0
72 LEDA 1072814 EmG 16 58 26.1596829024 -03 19 46.102578636   16.68   15.01   ~ 11 0
73 LEDA 1040967 EmG 16 59 07.2891556056 -05 44 31.133718312   16.35   14.47   ~ 14 0
74 2MASX J18191810+8807285 G 18 19 18.10533 +88 07 28.5710           ~ 1 0
75 2MASX J18215068+8642223 G 18 21 51.4297138608 +86 42 22.761740880           ~ 1 0
76 2MASX J18242867+8642139 G 18 24 28.3770162624 +86 42 14.012724780           ~ 1 0
77 2MASX J19301513+8540516 G 19 30 14.9783027832 +85 40 51.087826956           ~ 1 0
78 2MASX J20110295+4637149 G 20 11 02.95893 +46 37 14.9090           ~ 1 0
79 2MASX J20113931+4550035 G 20 11 39.31633 +45 50 03.5520           ~ 1 0
80 2MASX J20114858+4657335 G 20 11 48.6026011008 +46 57 33.574019400           ~ 1 0
81 2MASX J20132761+4630313 G 20 13 27.61967 +46 30 31.3380           ~ 1 0
82 2MASX J20134502+4726333 G 20 13 45.0031320864 +47 26 33.390270348           ~ 1 0
83 2MASX J20152058+4555282 G 20 15 20.58840 +45 55 28.2940           ~ 1 0
84 2MASX J20201548+4720364 G 20 20 15.4565078688 +47 20 36.098479392           ~ 1 0
85 2MASX J20224302+5636145 G 20 22 43.1429490360 +56 36 14.814233136           ~ 1 0
86 2MASX J20242781+4900526 G 20 24 27.8477895360 +49 00 52.717305240           ~ 1 0
87 2MASX J20244336+5245430 G 20 24 43.4005391376 +52 45 43.039714788           ~ 1 0
88 2MASX J20245359+5610264 G 20 24 53.599 +56 10 26.41           ~ 5 0
89 2MASX J20260256+5552523 G 20 26 02.56347 +55 52 52.3990           ~ 1 0
90 2MASX J20273404+5015483 G 20 27 34.04307 +50 15 48.3260           ~ 1 0
91 2MASX J20273859+5353393 G 20 27 38.5968488064 +53 53 39.217770600           ~ 1 0
92 2MASX J20281516+5641284 G 20 28 15.16847 +56 41 28.4170           ~ 1 0
93 2MASX J20290191+5817016 G 20 29 01.9619602392 +58 17 01.344278976           ~ 1 0
94 2MASX J20291160+5219510 G 20 29 11.6167900848 +52 19 51.279654036           ~ 1 0
95 2MASX J20300804+5415120 G 20 30 08.0448875160 +54 15 11.870441388           ~ 1 0
96 2MASX J20304675+6259395 G 20 30 46.75773 +62 59 39.5380           ~ 1 0
97 2MASX J20322187+5812031 G 20 32 21.8929565808 +58 12 02.613342240           ~ 1 0
98 2MASX J20334424+5403120 G 20 33 44.2311299592 +54 03 12.540686544           ~ 1 0
99 2MASX J20334533+6254178 G 20 33 45.33693 +62 54 17.8850           ~ 1 0
100 2MASX J20352447+5759548 G 20 35 24.4975657320 +57 59 55.178496816           ~ 1 0
101 2MASX J20354336+4953165 G 20 35 43.36680 +49 53 16.5550           ~ 1 0
102 2MASX J20354995+6208172 G 20 35 49.9653643656 +62 08 17.593578780           ~ 1 0
103 2MASX J20355212+5549587 G 20 35 52.1946944376 +55 49 58.480682340           ~ 1 0
104 2MASX J20370886+5756538 G 20 37 08.86967 +57 56 53.8080           ~ 1 0
105 2MASX J20373532+5628217 G 20 37 35.32467 +56 28 21.7270           ~ 1 0
106 2MASX J20384775+6128473 G 20 38 47.75400 +61 28 47.3950           ~ 1 0
107 2MASX J20385946+5351220 G 20 38 59.4459891552 +53 51 22.309976520           ~ 1 0
108 2MASX J20391360+6454369 G 20 39 13.60107 +64 54 36.9470           ~ 1 0
109 2MASX J20404068+6437003 G 20 40 40.5833938656 +64 36 59.846239476           ~ 1 0
110 2MASX J20412914+8626330 G 20 41 29.1638758008 +86 26 32.997733764           ~ 1 0
111 2MASX J20431546+5424171 G 20 43 15.46873 +54 24 17.1040           ~ 1 0
112 UGC 11679 G 20 44 17.241 +86 54 21.98   17       ~ 7 0
113 2MASX J20450027+6441410 G 20 45 00.2495686440 +64 41 41.509137804           ~ 1 0
114 2MASX J20452666+8620428 G 20 45 27.1161945096 +86 20 43.199232504           ~ 1 0
115 2MASX J20452857+6332249 G 20 45 28.6335625728 +63 32 25.459899972           ~ 1 0
116 2MASX J20453196+6157519 G 20 45 31.96293 +61 57 51.9550           ~ 1 0
117 2MASX J20482612+6414178 G 20 48 26.1501612696 +64 14 17.655412560           ~ 1 0
118 2MASX J20492307+6412331 G 20 49 23.0871520848 +64 12 33.210144144           ~ 1 0
119 2MASX J20495907+6207478 G 20 49 59.07720 +62 07 47.8670           ~ 1 0
120 2MASX J20515127+6309235 G 20 51 51.2631308952 +63 09 23.677722252           ~ 1 0
121 2MASX J20522972+8611119 G 20 52 29.4510685032 +86 11 12.166557288           ~ 2 0
122 2MASX J20581565+6217178 G 20 58 15.65927 +62 17 17.8370           ~ 1 0
123 2MASX J20592695+8454369 G 20 59 27.1545290376 +84 54 37.147463928           ~ 1 0
124 GRB 190425 GWE ~ ~           ~ 329 0
125 GrW 190426 152155 GWE ~ ~           ~ 48 0

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