2020ApJ...898...18R

Query : 2020ApJ...898...18R

2020ApJ...898...18R - Astrophys. J., 898, 18-18 (2020/July-3)

Hunting distant BL Lacertae objects with the photometric technique using Swift and SARA.

RAJAGOPAL M., KAUR A., AJELLO M., RAU A., DOMINGUEZ A., CENKO B., GREINER J. and HARTMANN D.H.

Abstract (from CDS):

BL Lacertae objects represent a large fraction (22%) of γ-ray sources in the Third Fermi Large Area Telescope catalog (3FGL). Nearly half of the BL Lac object population remains without a redshift because of their featureless optical spectra. We aim to increase the number of BL Lac objects with a redshift measurement by using the photometric technique. For this work, we have used six Swift-UVOT filters and SDSS g', r', i', and z' optical filters mounted on the 0.65 m SARA-CTIO located in Chile and the 1.0 m SARA-ORM in the Canary Islands. A sample of 45 sources was selected from the 3FGL catalog for which photometry was performed in 10 optical and UV filters to obtain redshift measurements. We found three sources with z > 1.3, while reliable upper limits have been provided for 17 sources. The results presented here bring the total number of high-z (z > 1.3) BL Lac objects to 29.

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

Journal keyword(s): Active galactic nuclei - Active galaxies - Blazars - High energy astrophysics - High-redshift galaxies

Simbad objects: 55

goto Full paper

goto View the references in ADS

Number of rows : 55
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 QSO J0009+0628 BLL 00 09 03.9322109352 +06 28 21.242543304 19.24 18.51 18.14 19.1   ~ 85 1
2 ICRF J001259.9-395426 BLL 00 12 59.9097885288 -39 54 26.056833444   18.33   18.05   ~ 84 1
3 QSO J0019+2021 BLL 00 19 37.85449305 +20 21 45.6446105     20.6 19.70   ~ 90 1
4 1RXS J002636.3-460101 BLL 00 26 35.6290766016 -46 01 09.919030836     17.8 17.5   ~ 35 1
5 RX J0042.1+3641 BLL 00 42 08.1061514568 +36 41 12.908168124     17.50 17.5   ~ 36 0
6 SUMSS J011619-615343 BLL 01 16 19.61241 -61 53 43.5148           ~ 42 1
7 QSO B0122-260 BLL 01 25 18.8374705440 -25 49 04.385957988     18.0     ~ 27 1
8 9Y-MST J0125-2549 Bla 01 25 23.4 -25 48 27           ~ 22 0
9 SUMSS J013306-441422 BLL 01 33 06.3652577613 -44 14 21.397072256           ~ 35 1
10 SUMSS J014347-584550 BLL 01 43 47.4327895920 -58 45 51.366823488         16.442 ~ 57 1
11 2MASS J01530732+7517429 BLL 01 53 07.3819815144 +75 17 42.924650784     18.90 18.3   ~ 33 0
12 6C 015907+721900 BLL 02 03 33.38495695 +72 32 53.6673482     19.2 15.90   ~ 102 1
13 2XMM J025315.6-012405 BLL 02 53 15.6056961960 -01 24 05.429068380   18.8   18.5   ~ 16 1
14 9Y-MST J0253-0126 Bla 02 53 15.8 -01 24 11           ~ 20 0
15 1RXS J030416.4-283215 BLL 03 04 16.3628475624 -28 32 18.060058824     19.54 19.8   ~ 46 0
16 SUMSS J031614-643732 BLL 03 16 14.3328133715 -64 37 31.463468178         17.216 ~ 47 1
17 1RXS J033514.5-445929 BLL 03 35 13.8824904827 -44 59 43.724139067           ~ 43 0
18 [VV98] J035933.7-261531 BLL 03 59 33.68186047 -26 15 31.3313649   21.8   20.6   ~ 62 1
19 NVSS J040946-040003 BLL 04 09 46.5862773216 -04 00 03.554420112   18.9 17.53 18.8 16.49 ~ 47 1
20 3FGL J0427.3-3900 Bla 04 27 18.2 -39 00 35           ~ 25 0
21 PMN J0427-3900 rG 04 27 21.66 -39 01 00.1           ~ 13 1
22 RX J0506.0+6113 BLL 05 05 58.7847983400 +61 13 35.957739216           ~ 50 2
23 PMN J0509+0541 BLL 05 09 25.9644373872 +05 41 35.333820420 15.32 14.95 14.78 15.12   ~ 589 2
24 RX J0528.7-5920 BLL 05 28 46.0484425811 -59 20 03.744451565           ~ 23 0
25 WISEA J055618.74-435146.0 BLL 05 56 18.51 -43 51 46.0           ~ 37 0
26 1RXS J060915.4-024749 BLL 06 09 15.0673808232 -02 47 54.677092676           ~ 41 0
27 1RXS J062753.2-152011 Bla 06 27 53.3767394644 -15 19 57.183152008           ~ 20 1
28 ICRF J080709.6-054113 BLL 08 07 09.6177668856 -05 41 13.915572108     19.5     ~ 72 1
29 1RXS J095806.4-031729 BLL 09 58 05.9867161608 -03 17 40.210851552       18.9   ~ 32 0
30 [VV2006] J110424.1+073053 BLL 11 04 24.07144376 +07 30 53.1810134   17.69 17.32     ~ 70 1
31 PMN J1110-1837 BLL 11 10 27.7735796048 -18 35 52.710978762       19.2   ~ 33 1
32 QSO B1221-829 Bla 12 24 54.38260236 -83 13 10.1020138   22.5   19.7   ~ 89 2
33 ICRF J130349.2-554031 Bla 13 03 49.2161399520 -55 40 31.610307216           ~ 39 0
34 QSO B1309-216 BLL 13 12 31.5548352888 -21 56 23.389976472 17.56 17.27 17.18     ~ 95 1
35 PMN J1326-5256 BLL 13 26 49.22911822 -52 56 23.6331968           ~ 74 1
36 PMN J1353-6640 Bla 13 53 40.14159 -66 39 57.6631           ~ 40 1
37 ICRF J142741.3-330531 BLL 14 27 41.3611529328 -33 05 31.504402104       17.48   ~ 73 1
38 2MASS J14403782-3846549 BLL 14 40 37.8231625176 -38 46 54.978605004           ~ 38 0
39 ICRF J150838.9-495302 Bla 15 08 38.9444182824 -49 53 02.315863248   19.83       ~ 61 1
40 3FGL J1509.9-2951 gam 15 09 56 -29 51.8           ~ 8 0
41 NVSS J151009-295133 Rad 15 10 09.038 -29 51 34.15           ~ 5 1
42 3FGL J1525.2-5905 Bz? 15 24 49.8 -59 04 04           ~ 18 0
43 PKS 1520-58 Rad 15 24 51.12282 -59 03 39.7182           ~ 24 0
44 AT20G J164513-575122 cm 16 45 13.43 -57 51 22.4           ~ 5 0
45 3FGL J1645.2-5747 gam 16 45 18 -57 47.4           ~ 8 0
46 1RXS J174525.9-075303 BLL 17 45 27.10494973 -07 53 03.9478191       17.85   ~ 95 1
47 9Y-MST J2200+2137 Bla 22 00 07.4 +21 38 18           ~ 24 0
48 ICRF J220014.1+213757 BLL 22 00 14.1974732424 +21 37 57.038959488       19.04   ~ 39 1
49 NVSS J222752+004446 rG 22 27 43.65 +00 57 30.0           ~ 39 0
50 2MASS J22275812+0037055 BLL 22 27 58.1313623424 +00 37 05.426018868   18.00 17.46 18.5   ~ 35 2
51 RX J2247.8+4413 BLL 22 47 53.2057635432 +44 13 15.393598068           ~ 52 1
52 1RXS J230722.5-120520 BLL 23 07 22.0954892304 -12 05 17.668798368       19.6   ~ 38 1
53 MCG-07-47-031 BLL 23 19 05.8954756632 -42 06 48.297034584   16.60 15.46     ~ 121 0
54 PMN J2324+0801 BLL 23 24 45.3248913192 +08 02 06.174088836           ~ 37 1
55 1RXS J235730.1-171801 BLL 23 57 29.9869021296 -17 18 03.318343812       16.9   ~ 42 1

To bookmark this query, right click on this link: simbad:objects in 2020ApJ...898...18R and select 'bookmark this link' or equivalent in the popup menu