2019ApJ...871...94K

Query : 2019ApJ...871...94K

2019ApJ...871...94K - Astrophys. J., 871, 94-94 (2019/January-3)

Identifying the 3FHL catalog. I. Archival Swift observations and source classification.

KAUR A., AJELLO M., MARCHESI S. and OMODEI N.

Abstract (from CDS):

We present the results of an identification campaign of unassociated sources from the Fermi Large Area Telescope 3FHL catalog. Out of 200 unidentified sources, we selected 110 sources for which archival Swift-XRT observations were available, 52 of which were found to have exactly one X-ray counterpart within the 3FHL 95% positional uncertainty. In this work, we report the X-ray, optical, IR, and radio properties of these 52 sources using positional associations with objects in various catalogs. The Wide-field Infrared Survey Explorer color-color plot for sources suggests that most of these belong to the blazar class family. The redshift measurements for these objects range from z = 0.277 to z = 2.1. Additionally, under the assumption that the majority of these sources are blazars, three machine-learning algorithms are employed to classify the sample into flat spectrum radio quasars or BL Lacertae objects. These suggest that the majority of the previously unassociated sources are BL Lac objects, in agreement with the fact the BL Lac objects represent by far the most numerous population detected above 10 GeV in 3FHL.

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

Journal keyword(s): catalogs - galaxies: active - X-rays: general

Simbad objects: 53

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Number of rows : 53
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 RX J0048.9+4223 BLL 00 48 59.1606548688 +42 23 51.064163520           ~ 29 0
2 NVSS J012152-391547 rG 01 21 52.7000848821 -39 15 44.288893145           ~ 27 1
3 PSO J029.1022-24.3343 BLL 01 56 24.5498286186 -24 20 03.658820715           ~ 32 0
4 1RXS J021359.9-695130 Bz? 02 13 58.6731595766 -69 51 37.072807679           ~ 19 0
5 NVSS J025111-183112 BLL 02 51 11.5346306089 -18 31 12.739792179           ~ 25 1
6 RX J0316.2-2607 BLL 03 16 14.9398716360 -26 07 57.346345992   17.80 17.5 17   ~ 59 0
7 1RXS J035028.1-514455 BL? 03 50 28.3699538061 -51 44 54.413140353           ~ 22 0
8 1RXS J035051.7-281619 Bla 03 50 51.3185508513 -28 16 32.637946852           ~ 26 0
9 1RXS J040111.9-535456 QSO 04 01 11.2006216991 -53 54 58.450106589           ~ 22 0
10 SWIFT J0428.2-6704A LXB 04 27 49.6119608221 -67 04 35.066804919           ~ 76 1
11 SUMSS J043836-732921 BLL 04 38 37.04040 -73 29 21.1630         16.329 ~ 28 0
12 NVSS J050650+032401 BLL 05 06 50.1481553527 +03 23 58.762381653           ~ 29 1
13 1RXS J054106.1-485408 QSO 05 41 06.9783879561 -48 54 11.191380986           ~ 19 0
14 NVSS J055941+304227 BLL 05 59 41.0017990937 +30 42 28.254156835           ~ 22 1
15 1RXS J070609.7+024502 BL? 07 06 10.8301855160 +02 44 49.822374486           ~ 16 0
16 NVSS J072547-054832 BLL 07 25 47.6881059723 -05 48 27.961397547           ~ 24 0
17 1RXS J073928.1-672147 AGN 07 39 27.3721082240 -67 21 36.588728053           ~ 15 0
18 1RXS J074725.1-492626 BLL 07 47 24.7487371977 -49 26 33.292444057           ~ 26 0
19 NVSS J081338-035716 BLL 08 13 38.0632797594 -03 57 17.317406787           ~ 25 1
20 1RXS J082021.9-280206 BL? 08 20 21.93552 -28 01 58.5300           ~ 16 0
21 3FGL J0928.3-5255 AGN 09 28 18.62669 -52 57 03.0360           ~ 21 0
22 NVSS J093754-143350 BLL 09 37 54.7254886560 -14 33 50.271271704           ~ 34 0
23 1RXS J101620.6-424733 BLL 10 16 20.6709126308 -42 47 22.568551406           ~ 28 0
24 3FGL J1024.4-4545 AGN 10 24 32.4478735445 -45 44 27.686391981           ~ 19 0
25 1RXS J103332.0-503539 BLL 10 33 32.1477198726 -50 35 28.942977592           ~ 35 0
26 1RXS J103438.7-464412 BL? 10 34 38.4805819655 -46 44 03.582284119           ~ 14 0
27 NVSS J104757-373729 BLL 10 47 56.9329649145 -37 37 30.849293270           ~ 21 0
28 1FGL J1117.0-5339 Bla 11 17 15.3346219531 -53 38 16.229035308           ~ 31 1
29 1RXS J112502.3-580547 Bz? 11 25 04.0840038716 -58 05 39.697852011           ~ 19 1
30 NVSS J114600-063856 BLL 11 46 00.8591007005 -06 38 54.797803202           ~ 27 0
31 NVSS J122014-245949 Bla 12 20 14.5466882952 -24 59 48.636719509           ~ 24 1
32 NVSS J122020-371411 BLL 12 20 19.8121966761 -37 14 13.735408770           ~ 26 0
33 2dFGRS TGN126Z342 Bla 12 34 48.0582288566 -04 32 45.237274152   19.362   18.179   ~ 27 0
34 1RXS J124015.2-714859 BLL 12 40 21.1849275886 -71 48 57.789188630           ~ 36 1
35 6C 124620+514357 BLL 12 48 34.3047700560 +51 28 07.873858452   18.67 17.99 17.4   ~ 67 1
36 NVSS J124919-280833 BLL 12 49 19.31040 -28 08 34.3860           ~ 40 1
37 4FGL J1447.0-2657 Bz? 14 46 56.8503565804 -26 56 58.313021856           ~ 26 1
38 2MASS J15165000+2636369 QSO 15 16 50.0092057224 +26 36 37.077498468   18.33 18.01     ~ 37 0
39 NVSS J154150+141437 BLL 15 41 50.0969224560 +14 14 37.576371048           ~ 41 1
40 RX J155330.0-242223 QSO 15 53 31.62781399 -24 22 06.0360491           ~ 70 1
41 4FGL J1650.9+0429 Bz? 16 50 58.69 +04 27 34.0           ~ 15 0
42 NVSS J170433-052839 BLL 17 04 33.8379087403 -05 28 40.834365669           ~ 38 0
43 NVSS J185606-122148 BL? 18 56 06.4023679195 -12 21 45.701471864           ~ 16 0
44 NVSS J195800+243802 BLL 19 58 00.39986 +24 38 02.8680           ~ 24 1
45 RX J2035.9+4900 BLL 20 35 51.6485549578 +49 01 44.306515954           ~ 29 1
46 NVSS J204259+152107 Rad 20 42 59.75 +15 21 08.4           ~ 9 0
47 NVSS J210939+044000 BLL 21 09 40.1214306936 +04 40 00.363770800           ~ 21 1
48 NVSS J211522+121802 BLL 21 15 21.9991464024 +12 18 02.807891784           ~ 38 0
49 1RXS J214227.2+365944 Bla 21 42 26.4395105847 +36 59 50.358626324           ~ 18 0
50 NVSS J214247+195810 BLL 21 42 47.4925276917 +19 58 10.908636002           ~ 25 1
51 NVSS J215122+415632 Bla 21 51 23.0062752136 +41 56 32.429491556           ~ 20 1
52 WISEA J215123.22+415633.9 mul 21 51 23.19838 +41 56 34.0222           ~ 1 1
53 NVSS J230848+542612 BLL 23 08 48.7277462875 +54 26 11.085471200           ~ 17 0

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