Table 3.
Host and/or counterpart’s photometric data or upper limits of FXRT candidates.
| FXRT | Id | mu | mg | mr | mi | mz | my | mY | mJ | mH | mK | W1 | W2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) | (13) | (14) |
| Nearby extragalactic FXRT Candidates from CSC2 | |||||||||||||
| 1 | XRT 000519 | > 22.30 (a) | 26.8 ± 0.1 (i) | > 21.60 (a) | 24.3±0.1 (i) | > 21.11 (a) | > 20.06 (a) | > 20.27 (b) | > 20.11 (b) | > 20.15 (b) | > 19.82 (b) | > 19.91 (c) | > 20.11 (c) |
| 2 | XRT 010908(S1) (†) | > 22.45 (h) | 18.15 ± 0.04 (a) | 18.11 ± 0.34 (a) | 16.99 ± 0.01 (a) | 18.74 ± 0.13 (a) | 18.64 ± 0.06 (a) | – | > 17.32 (f) | > 16.61 (f) | > 16.68 (f) | > 19.91 (c) | > 20.82 (c) |
| XRT 010908(S2) (†) | > 22.45 (h) | 18.77 ± 0.01 (a) | 17.80 ± 0.06 (a) | 17.12 ± 0.14 (a) | 17.50 ± 0.25 (a) | 16.22 ± 0.10 (a) | – | > 17.32 (f) | > 16.61 (f) | 15.21 ± 0.13 (f) | 13.49 ± 0.03 (c) | 13.65 ± 0.02 (c) | |
| 3 | XRT 070530(S1) (†) | > 22.56 (e) | > 24.30 (e) | > 23.10 (e) | > 22.52 (e) | 22.33 ± 0.18 (e) | 21.75 ± 0.07 (e) | – | > 19.82 (g) | > 17.05 (f) | > 19.45 (g) | > 18.68 (c) | > 20.41 (c) |
| 6 | XRT 130822 | > 23.87 (h) | > 21.89 (a) | > 21.66 (a) | > 21.45 (a) | > 20.96 (a) | > 19.88 (a) | – | > 17.46 (f) | > 17.21 (f) | > 17.24 (f) | > 19.75 (c) | > 20.17 (c) |
| Distant extragalactic FXRT Candidates from CSC2 | |||||||||||||
| 7 | XRT 030511 | – | > 23.40 (e) | > 23.27 (e) | > 21.12 (a) | > 21.80 (e) | > 23.68 (d) | – | > 21.59 (g) | > 17.23 (f) | > 19.74 (g) | > 20.36 (c) | > 20.48 (c) |
| 8 | XRT 041230 | – | 25.74 ± 0.84 (d) | 23.01 ± 0.10 (d) | 21.96 ± 0.07 (d) | 21.65 ± 0.10 (d) | 22.96 ± 1.17 (d) | – | 21.30 ± 0.23 (g) | > 17.40 (f) | > 17.52 (f) | > 20.20 (c) | > 20.56 (c) |
| 9 | XRT 080819 | – | 21.85 ± 0.05 (e) | 21.12 ± 0.02 (e) | 20.57 ± 0.03 (e) | 20.42 ± 0.07 (e) | 20.34 ± 0.11 (e) | – | 20.21 ± 0.20 (g) | > 17.24 (f) | 19.46 ± 0.16 (g) | 18.74 ± 0.05c | 18.63 ± 0.10 (c) |
| 10 | XRT 100831 | – | > 24.49 (d) | > 24.29 (d) | > 24.23 (d) | > 23.96 (d) | > 23.43 (d) | — | > 17.35 (f) | > 17.16 (f) | > 17.28 (f) | > 20.59 (c) | > 20.87 (c) |
| 11 | XRT 110103 | – | > 23.19 (e) | > 22.95 (e) | > 21.06 (a) | > 21.84 (e) | > 19.67 (a) | > 20.61 (g) | > 20.07 (g) | > 17.30 (f) | > 19.22 (g) | > 20.01 (c) | > 20.27 (c) |
| 12 | XRT 110919 | – | > 24.78 (d) | > 24.40 (d) | > 24.36 (d) | > 24.12 (d) | > 23.56 (d) | – | > 17.32 (f) | > 17.29 (f) | > 17.30 (f) | > 20.18 (c) | > 20.35 (c) |
| 13 | XRT 140327 | – | > 23.20 (e) | > 22.63 (e) | 24.7 ± 0.3 (d)(††) | > 21.66 (e) | – | > 20.88 (g) | > 20.45 (g) | > 17.01 (f) | > 19.86 (g) | > 20.24 (c) | > 20.65 (c) |
| 14 | XRT 141001 | 27.30 ± 0.1 (j) | 27.87 ± 0.35 (j) | 27.21 ± 0.10 (j) | 27.13 ± 0.21 (j) | 27.01 ± 0.22 (j) | > 23.68 (d) | 26.87 ± 0.20 (j) | 27.11 ± 0.23 (j) | 26.53 ± 0.17 (j) | 26.07 ± 1.05 (j) | 24.75 ± 0.23 (j) | 25.28 ± 0.26 (c) |
| /CDF-S XT1 | |||||||||||||
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 1σ error, otherwise we provide 3σ limits from several catalogs:
Pan-STARRS-DR2 (Flewelling 2018),
UKIDSS-DR11+ (Warren et al. 2007),
unWISE (Schlafly et al. 2019),
DES-DR2 (Abbott et al. 2021a),
NSC-DR2p (Nidever et al. 2021),
2MASS (Skrutskie et al. 2006),
VHS-DR5 (McMahon et al. 2013),
SDSS-DR16 (Ahumada et al. 2020),
INT/CFHT (Jonker et al. 2013),
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). We omit entries for FXRTs 4 and 5, as both candidates have up to ≈10 potential counterparts in HST images.
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