Table 5.
Physical parameters inferred from the optical spectra of the ILRTs sample.
| Date | MJD | Phase (a) | v (Hα) (b) | L (Hα) (c) | LHα/L[Ca II] (c) | TBB |
|---|---|---|---|---|---|---|
| (d) | (km s−1) | (1038erg s−1) | (K) | |||
| AT 2010dn | ||||||
| 20100602 | 55349.9 | −5.0 | 695 | 2.12 | 2.9 | 7095 ± 355 |
| 20100603 | 55350.9 | −4.0 | 671 | 1.85 | 2.6 | 6890 ± 240 |
| 20100604 | 55351.9 | −3.0 | 588 | 3.47 | 2.5 | 6540 ± 330 |
| 20100605 | 55352.9 | −2.0 | – | – | – | 6435 ± 320 |
| 20100607 | 55354.9 | +0.0 | 577 | 2.29 | 2.6 | 6760 ± 340 |
| 20100609 | 55356.9 | +2.0 | < 823 | 2.63 | 2.5 | 6830 ± 340 |
| 20100611 | 55358.9 | +4.0 | 563 | 1.86 | 2.3 | 6690 ± 195 |
| 20100616 | 55363.9 | +9.0 | 442 | 2.12 | 2.2 | 6820 ± 320 |
| 20100617 | 55364.9 | +10.0 | 438 | 1.81 | 2.1 | 6710 ± 280 |
| 20100707 | 55384.9 | +30.0 | < 142 | 0.58 | 1.8 | 5020 ± 250 |
| AT 2012jc | ||||||
| 20120329 | 56015.1 | −8.4 | < 1097 | 5.30 | – | 8380 ± 420 |
| 20120331 | 56017.3 | −6.2 | 614 | 5.30 | 15.4 | 7385 ± 740 |
| 20120414 | 56031.2 | +7.7 | < 960 | 5.27 | 10.2 | 7995 ± 205 |
| 20120501 | 56048.3 | +24.8 | < 617 | 2.97 | 5.5 | 6780 ± 340 |
| 20120623 | 56101.2 | +77.7 | 842 | 2.36 | – | 5445 ± 525 |
| AT 2013lb | ||||||
| 20130207 | 56330.1 | +5.6 | < 640 | 3.33 | – | 6865 ± 685 |
| 20130207 | 56330.4 | +5.9 | < 777 | 3.36 | 13.4 | 6450 ± 645 |
| 20130207 | 56330.4 | +5.9 | < 460 | 3.29 | – | 6250 ± 315 |
| 20130209 | 56332.3 | +7.8 | < 1006 | – | – | 5850 ± 585 |
| 20130219 | 56343.3 | +18.8 | < 1006 | 2.29 | 8.2 | 6390 ± 640 |
| 20130304 | 56356.3 | +31.8 | < 617 | 1.87 | 4.8 | 6450 ± 325 |
| 20130422 | 56404.3 | +79.8 | 680 | 2.33 | – | 4375 ± 220 |
| AT 2013la (d) | ||||||
| 20140108 | 56665.2 | +13.2 | < 640 | 6.31 | – | 5880 ± 295 |
| 20140115 | 56672.2 | +20.2 | < 457 | 5.92 | – | 7110 ± 1420 |
| 20140203 | 56692.2 | +40.2 | 778 | – | – | 6050 ± 1210 |
| 20140205 | 56694.2 | +42.2 | < 709 | 5.33 | – | 5345 ± 270 |
| 20140228 | 56717.2 | +65.2 | 400 | 4.99 | – | 5290 ± 265 |
| 20140322 | 56739.1 | +87.1 | < 480 | 5.04 | – | 6005 ± 1200 |
| 20140716 | 56854.9 | +202.9 | 446 | 3.98 | – | 5055 ± 255 |
| 20140814 | 56883.9 | +231.9 | 503 | 3.87 | – | 4285 ± 225 |
| 20141220 | 57012.3 | +360.3 | 499 | 2.68 | – | 4485 ± 180 |
| AT 2018aes | ||||||
| 20180331 | 58208.1 | −3.0 | 708 | 0.85 | 2.7 | 6620 ± 330 |
| 20180426 | 58234.1 | +23.0 | 609 | 0.77 | 2.2 | 5675 ± 285 |
Notes.
Most of our measurements are limited by the instrumental resolution constraints, hence the FWHM velocities may have large error bars, and in many cases they should be regarded as upper limits.
We adopt conservative errors of ∼20% for the Hα luminosity and the LHα/L[Ca II] ratio because of the uncertainty in the flux calibration of the spectra.
(d)Hα has a complex profile in AT 2013la, and was therefore fitted with multiple components. The narrowest Gaussian emission and absorption components are usually below the instrumental resolution limit. For this reason, only the FWHM velocities of the broader Lorentzian components are reported here.
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