Table 1
Analysis results for the observed sources.
| Source name (1) | S/N (2) | Rc (BL Lac) (obs) (3) | Redshift (4) | Flux ratio (5) | Rc(gal) (fit) (6) | MR (gal) (7) | Slope (8) |
|---|---|---|---|---|---|---|---|
| 1RXS J032342.6-011131 | 132 | 17.4 ± 0.1 | – | – | – | – | −1.2 ± 0.1 |
| RX J0338.4+1302 | 60 | 17.6 ± 0.2 | – | – | – | – | −2.5 ± 0.4 |
| SUMSS J052542-601341 | 3 | 21.2 ± 0.1 | – | – | – | – | −0.8 ± 1.0 |
| GB6 J0540+5823 | 42 | 16.8 ± 0.3 | – | – | – | – | −1.3 ± 0.1 |
| PMN J0622-2605 | 89 | 17.5 ± 0.1 | 0.4150 ± 0.0001 | – | – | – | −0.4 ± 0.1 |
| TXS 0700-197 | 110 | 16.7 ± 0.1 | – | – | – | – | −0.4 ± 0.1 |
| NVSS J080405-362919 | 70 | 17.1 ± 0.1 | >1.4454 ± 0.0003 | – | – | – | −1.0 ± 0.1 |
| RX J0819.2-0756 | 61 | 18.5 ± 0.2 | 0.3214 ± 0.0002 | 1.8 ± 0.6 | 19.4 ± 0.4 | −22.0 | −1.2 ± 0.2 |
| NVSS J084121-355506 | 96 | 16.7 ± 0.2 | >1.0196 ± 0.0001 | – | – | – | −1.2 ± 0.1 |
| 1RXS J094709.2-254056 | 126 | 16.2 ± 0.1 | – | – | – | − | −0.9 ± 0.2 |
| NVSS J105534-012617 | 79 | 18.2 ± 0.1 | – | – | – | − | −1.0 ± 0.2 |
| NVSS J123341-014426 | 144 | 18.0 ± 0.1 | – | – | – | – | −0.7 ± 0.1 |
| 1RXS J130737.8-425940 | 109 | 16.7 ± 0.1 | – | – | – | − | −1.1 ± 0.1 |
| 4C +29.48 | 43 | 19.7 ± 0.2 | 1.1427 ± 0.0001 | – | – | − | −0.4 ± 0.2 |
| 1RXS J144037.4-384658 | 75 | 17.7 ± 0.2 | 0.3583 ± 0.0002 | 4.8 ± 0.9 | 19.5 ± 0.2 | −22.3 | −1.2 ± 0.1 |
| PMN J1544-6641 | 70 | 17.7 ± 0.1 | 0.2595 ± 0.0004 | 4.9 ± 0.3 | 19.1 ± 0.1 | −21.7 | −1.1 ± 0.1 |
| NVSS J160756-203942 | 62 | 18.3 ± 0.1 | 0.5479 ± 0.0001 | – | – | − | −0.5 ± 0.1 |
| NVSS J163750-344915 | 93 | 16.8 ± 0.1 | – | – | – | – | −0.9 ± 0.1 |
| NVSS J164011+062827 | 112 | 17.7 ± 0.2 | – | – | – | − | −0.9 ± 0.1 |
| 1RXS J171405.2-202747 | 65 | 17.6 ± 0.1 | 0.5222 ± 0.0002 | 3.5 ± 0.5 | 19.4 ± 0.2 | −23.8 | −1.4 ± 0.1 |
| RXJ1754.1+3212 | 170 | 16.5 ± 0.2 | – | – | – | – | −1.1 ± 0.04 |
| NVSS J182338-345412-Gr600 | 110 | 15.8 ± 0.2 | 0.1826 ± 0.0002 | – | ~17.8 | ~-22.1 | −1.2 ± 0.1 |
| NVSS J182338-345412-Gr300 | 98 | 15.8 ± 0.2 | 0.1826 ± 0.0002 | – | – | − | −1.4 ± 0.3 |
| NVSS J184919-164723 | 46 | 19.0 ± 0.1 | 0.3485 ± 0.0005 | 2.0 ± 0.4 | 19.9 ± 0.2 | −21.8 | −1.0 ± 0.1 |
| NVSS J192502+28154 | 65 | 16.5 ± 0.1 | 0.1636 ± 0.0003 | – | 17.6 ± 0.4 | −22.2 | −1.3 ± 0.1 |
| 1RXS J194246.3+103339 | 97 | 16.0 ± 0.2 | – | – | – | − | −0.7 ± 0.1 |
| 1RXS J194422.6-452326 | 75 | 17.2 ± 0.1 | 0.2358 ± 0.0002 | 5.3 ± 0.6 | 18.2 ± 0.1 | −22.3 | −1.1 ± 0.1 |
| NVSS J194455-214320 | 76 | 17.8 ± 0.1 | 0.4263 ± 0.0003 | 1.9 ± 0.1 | 18.8 ± 0.1 | −23.6 | −1.1 ± 0.2 |
| NVSS J224753+441317 | 133 | 16.6 ± 0.3 | – | – | – | − | −1.4 ± 0.1 |
| 1RXS J230437.1+370506 | 95 | 17.9 ± 0.3 | – | – | – | – | −1.5 ± 0.1 |
Notes. Two separate FORS observations of NVSS J182338-345412 were performed, one using Grism 600RI and the other using Grism 300I. In these spectra absorption features of the host galaxy have been detected but their S/N was too weak to allow formal fitting with a galaxy model. We therefore fit the spectra with a power law and roughly estimated the host galaxy magnitude from the intensity of the features. The spectral bin width is 1 Å for sources observed with Keck/ESI and SALT/RSS and 1.66 Å for sources observed with VLT/FORS. The columns are (1) Source Name; (2) Median signal-to-noise ratio per spectral bin measured in continuum regions; (3) Rc, Cousins magnitude of the BL Lac spectrum corrected for Galactic reddening, telluric absorption, and slit losses with errors. Slit losses were estimated using an effective radius re = 10 kpc for all sources; (4) Redshift or lower limit with errors; (5) Flux Ratio of jet to galaxy at 5500 Å in rest frame; (6) Rc, Cousins magnitude of the galaxy with the same corrections as in column (3); (7) Absolute R Magnitude of the galaxy, the errors are the same as those in column (6); (8) Power-Law Slope α with fλ ∝ λα with errors. For α, 3-sigma errors are shown; all other quantities are shown with 1-sigma errors. If the entry is unknown, the legend is ‘-’.
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