2018AJ....156..212M

Query : 2018AJ....156..212M

2018AJ....156..212M - Astron. J., 156, 212-212 (2018/November-0)

Identifying the 3FHL Catalog. II. Results of the KOSMOS optical spectroscopy campaign.

MARCHESI S., KAUR A. and AJELLO M.

Abstract (from CDS):

We present the results of the optical spectroscopy follow up of a sample of 28 unclassified blazars from the Third Fermi-LAT Catalog of High-Energy Sources (3FHL). All the spectra were taken with the 4 m Mayall telescope at Kitt Peak. With this follow-up program, we are able to classify 27 out of 28 objects as BL Lacs, while the remaining one is a flat spectrum radio quasar. We determine a redshift (z) for three of these objects and a lower limit on z for other four sources: the farthest object for which we obtain a redshift has z > 0.836. These results are part of a more extended campaign of optical spectroscopy follow up of 3FHL blazars, aimed to obtain a complete sample of blazars at >10 GeV, which will then be used to extend our knowledge on blazar emission mechanisms and on the extragalactic background light.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): BL Lacertae objects: general - galaxies: distances and redshifts - galaxies: nuclei

Simbad objects: 22

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Number of rows : 22
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 NVSS J003119+072456 BLL 00 31 19.7096957544 +07 24 53.560153296   19.8   18.6   ~ 42 1
2 RX J0040.2+4049 BLL 00 40 13.8112928443 +40 50 04.756997684     19.30 19.9   ~ 80 1
3 1RXS J012712.6+032250 BLL 01 27 13.9561096712 +03 23 00.587171321           ~ 39 0
4 RX J0134.4+2638 BLL 01 34 28.1946775464 +26 38 43.010995272   17.1   15.9   ~ 62 1
5 RX J0241.3+6543 BLL 02 41 21.7468157232 +65 43 11.576921016           ~ 38 1
6 NVSS J030515-160814 BLL 03 05 15.0695002294 -16 08 16.687113582           ~ 50 1
7 2MASS J03530849+8256313 Bla 03 53 08.5279601376 +82 56 31.452050040           ~ 19 1
8 6C 041651+400415 Bz? 04 20 13.4443367304 +40 11 21.351061968           ~ 20 1
9 1RXS J043439.3+092407 BLL 04 34 40.9908221688 +09 23 48.719917433           ~ 32 1
10 PMN J0640-1253 BLL 06 40 07.1821661088 -12 53 15.408624624           ~ 52 1
11 NVSS J170433-052839 BLL 17 04 33.8379087403 -05 28 40.834365669           ~ 38 0
12 1RXS J182021.1+362350 BLL 18 20 20.9864878632 +36 23 43.199467800           ~ 41 1
13 RX J1841.3+2909 BLL 18 41 21.7201454496 +29 09 41.032048536   17.6   16.7   ~ 42 1
14 RX J1904.2+3627 BLL 19 04 11.8663392936 +36 26 58.921335672           ~ 39 1
15 NVSS J191129-190823 BLL 19 11 29.7453785851 -19 08 24.638682574           ~ 44 1
16 2MASS J19493419+0906537 BLL 19 49 34.1967106776 +09 06 53.508539916           ~ 23 0
17 NVSS J211522+121802 BLL 21 15 21.9991464024 +12 18 02.807891784           ~ 38 0
18 ICRF J221239.1+275938 BLL 22 12 39.10311392 +27 59 38.4496223           ~ 55 1
19 RX J2220.4+2814 BLL 22 20 28.7263652256 +28 13 55.675566804           ~ 38 1
20 NVSS J224604+154437 BLL 22 46 04.9940968404 +15 44 35.400334745           ~ 53 1
21 NVSS J230012+405224 BLL 23 00 12.3707568624 +40 52 24.693697956           ~ 30 2
22 B3 2355+382 BLL 23 58 25.1731211064 +38 28 56.494492536           ~ 37 1

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