Table 4.
Host and/or counterpart’s photometric data or upper limits of FXT candidates.
| FXT | mg | mr | mi | mz | my | mY | mJ | mH | mK | W1 | W2 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) |
| 15 | > 24.0 (h) | > 23.0 (h) | > 22.3 (h) | > 22.2 (h) | > 20.0 (a) | – | > 16.9 (f) | > 16.6 (f) | > 17.2 (f) | > 20.3 (c) | > 20.6 (c) |
| 16 (S1) | 26.509 ± 0.1 (j) | 25.307 ± 0.1 (j) | 24.598 ± 0.1 (j) | 24.506 ± 0.1 (j) | – | 24.450 ± 0.1 (j) | 24.300 ± 0.1 (j) | 23.852 ± 0.1 (j) | > 20.1 (g) | 22.407 ± 0.1 (j) | 21.928 ± 0.1 (j) |
| 17 | > 24.1 (h) | > 22.4 (h) | > 21.8 (h) | > 21.5 (h) | > 20.0 (a) | – | > 17.1 (f) | > 17.1 (f) | > 17.2 (f) | > 19.8 (c) | > 20.1 (c) |
| 18 (S1) | 24.6 ± 0.2 (l) | 24.2 ± 0.1 (l) | 24.0 ± 0.1 (l) | 23.6 ± 0.2 (l) | > 20.1 (a) | – | > 19.8 (g) | > 19.2 (g) | > 19.2 (g) | > 19.3 (c) | > 20.2 (c) |
| 18 (S2) | 24.9 ± 0.2 (d) | 24.6 ± 0.1 (d) | 24.2 ± 0.2 (d) | 25.2 ± 0.9 (d) | 24.3 ± 1.1 (d) | – | > 19.8 (g) | > 19.2 (g) | > 19.2 (g) | > 19.3 (c) | > 20.2 (c) |
| 18 (S3) | 25.6 ± 0.7 (h) | 23.0 ± 0.04 (d) | 21.8 ± 0.2 (a) | 21.2 ± 0.1 (a) | 21.1 ± 0.1 (d) | 20.2 ± 0.2 (d) | 20.1 ± 0.1 (g) | > 19.8 (b) | 19.7 ± 0.2 (b) | 19.3 ± 0.1 (c) | 20.2 ± 0.3 (c) |
| 19 (S1) | > 25.6 (d) | 24.79 ± 0.04 (k),(‡) | 24.93 ± 0.05 (k),(‡) | > 24.32 (d) | > 24.04 (d) | – | 24.67 ± 0.04 (k),(‡) | 24.33 ± 0.04 (k),(‡) | > 20.3 (g) | > 20.1 (c) | > 20.3 (c) |
| 20 (S1) | 24.3 ± 0.2 (l) | 23.5 ± 0.2 (l) | > 21.6 (a) | 23.2 ± 0.2 (l) | > 19.8 (a) | – | > 17.9 (f) | > 17.7 (f) | > 17.7 (f) | > 20.2 (c) | > 20.5 (c) |
| 21 (S1) | > 23.6 (h) | 25.09 ± 1.49 (a) | 22.68 ± 0.13 (a) | 21.73 ± 0.13 (a) | 21.55 ± 0.28 (a) | – | > 17.5 (f) | > 17.4 (f) | > 17.6 (f) | > 19.8 (c) | > 20.3 (c) |
| 22 (S1) | 20.9 ± 0.2 (h) | 21.4 ± 0.4 (h) | 20.4 ± 0.3 (h) | 20.5 ± 0.9 (h) | > 19.7 (a) | – | > 17.8 (f) | > 17.5 (a) | > 17.7 (a) | > 20.1 (c) | > 20.4 (c) |
Notes. All magnitudes are converted to the AB magnitude system using González-Fernández et al. (2018) for VHS and 2MASS data, Hewett et al. (2006) for UKIDSS data, and Wright et al. (2010) for unWISE data. If an optical/NIR counterpart candidate is detected, we list its magnitude and 1-σ error, otherwise we provide 3σ limits from several catalogs: (a)Pan-STARRS-DR2 (Flewelling 2018), (b)UKIDSS-DR11+ (Warren et al. 2007), (c)unWISE (Schlafly et al. 2019), (d)DES-DR2 (Abbott et al. 2021), (e)NSC-DR2p (Nidever et al. 2021), (f)2MASS (Skrutskie et al. 2006), (g)VHS-DR5 (McMahon et al. 2013), (h)SDSS-DR16 (Ahumada et al. 2020), (i)INT/CFHT (Jonker et al. 2013), (j)CANDELS (nearest HST/Spitzer bands substituted: g = F435W, r = F606W, i = F814W, z = F850LP, Y = F105W, J = F125W, H = F160W, W1 = ch1, W2 = ch2; Guo et al. 2013), (k)(nearest HST bands substituted: r = F606W, i = F814W, J = F110W, H = F160W), (l)Legacy Surveys DR9 (Dey et al. 2019). ( † )Photometric data of FXTs with counterpart(s) (S+# means the source number). ( ‡ )Obtained using a photometric aperture of 
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