2017ApJ...844..120P

Query : 2017ApJ...844..120P

2017ApJ...844..120P - Astrophys. J., 844, 120-120 (2017/August-1)

Spectroscopy of 10 γ-ray BL Lac objects at high redshift.

PAIANO S., LANDONI M., FALOMO R., TREVES A. and SCARPA R.

Abstract (from CDS):

We present optical spectra with high signal-to-noise ratio of 10 BL Lac objects detected at GeV energies by the Fermi satellite (3FGL catalog), which previous observations suggested are at relatively high redshift. The new observations, obtained at the 10 m Gran Telescopio Canarias, allowed us to find the redshift for J0814.5+2943 (z = 0.703), and we can set a spectroscopic lower limit for J0008.0+4713 (z > 1.659) and J1107.7+0222 (z > 1.0735) on the basis of Mg II intervening absorption features. In addition we confirm the redshifts for J0505.5+0416 (z = 0.423) and J1450+5200 (z > 2.470). Finally we contradict the previous z estimates for five objects (J0049.7+0237, J0243.5+7119, J0802.0+1005, J1109.4+2411, and J2116.1+3339).

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

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

Simbad objects: 10

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Number of rows : 10
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 2MASS J00075997+4712078 BLL 00 07 59.9724805320 +47 12 07.769093004   18.3   18.2   ~ 71 1
2 QSO J0049+0237 BLL 00 49 43.23593957 +02 37 03.7785936 19.56 19.23 19.14 19.07   ~ 104 1
3 ICRF J024330.8+712017 BLL 02 43 30.8913278232 +71 20 17.905675416     19.4 18.4   ~ 80 1
4 PMN J0505+0416 BLL 05 05 34.7693853576 +04 15 54.577536876 18.07 17.80 17.56 16.8   ~ 83 1
5 3FGL J0802.0+1005 BLL 08 02 04.8180952656 +10 06 37.815029244       17.9   ~ 21 0
6 [VV2006] J081421.2+294020 BLL 08 14 21.2670075288 +29 40 20.968903632   19.17 18.82     ~ 51 0
7 2MASS J11073589+0222250 BLL 11 07 35.9156720520 +02 22 24.595003416 18.41 18.51 18.26 18.6   ~ 49 0
8 QSO B1106+244 BLL 11 09 16.1671846680 +24 11 20.151320064     18.7 17.4   ~ 52 0
9 [VV2006] J145100.0+520111 BLL 14 50 59.9882223456 +52 01 11.714469096   19.39 19.02 19.2   ~ 68 2
10 RX J2116.1+3339 BLL 21 16 14.5182410521 +33 39 20.425133154           ~ 64 1

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