Table 1
Blue ETGs with ongoing tidal interactions and/or observed to have a close companion with equivalent redshifts.
| SDSS | S09 | RA | Dec | z | Mr | u−r | Log SSFR | zcomp | Companion |
| ID | objID | h:m:s | d:m:s | (mag) | (mag) | (yr-1) | galaxy | ||
|
|
|||||||||
| 587725550139408424 | 14 | 12:35:02.6 | +66:22:33.4 | 0.047 | −21.67 | 1.959 | –10.25 | 0.047 | blue dwarf (strong Hα emission line) |
| 587726100953432183 | 30 | 15:17:19.7 | +03:19:18.9 | 0.037 | −20.74 | 2.131 | –10.75 | 0.037 | red ETG |
| 587730816286785593 | 61 | 22:15:16.2 | −09:15:47.6 | 0.038 | −21.61 | 1.707 | –9.64 | – | jet feature |
| 587731500261834946 | 66 | 10:54:37.9 | +55:39:46.0 | 0.048 | −20.89 | 1.976 | –9.95 | 0.048 | red ETG |
| 587732769982906490 | 92 | 12:20:23.1 | +08:51:37.1 | 0.049 | −20.88 | 2.086 | –10.23 | 0.049 | blue disturbed disc (strong Hα emission line) |
| 587733412064788620 | 103 | 15:50:00.5 | +41:58:11.2 | 0.034 | −20.80 | 1.879 | –10.18 | 0.035 | red ETG |
| 587735742615388296 | 119 | 15:53:35.6 | +32:18:20.6 | 0.050 | −21.07 | 1.789 | –10.07 | 0.050 | blue disturbed spiral galaxy (strong Hα emission line) |
| 587739115234394179 | 139 | 07:56:08.7 | +17:22:50.5 | 0.030 | −20.73 | 2.211 | –10.62 | 0.028 | blue disturbed galaxy (strong Hα emission line) |
| 587741490904105107 | 160 | 10:25:24.7 | +27:25:06.3 | 0.050 | −20.98 | 2.256 | –10.42 | 0.049 | red ETG |
| 588007005234856197 | 172 | 08:17:56.3 | +47:07:19.5 | 0.039 | −21.06 | 2.309 | –10.11 | – | jet feature |
| 588011125186691149 | 180 | 12:06:17.0 | +63:38:19.0 | 0.040 | −21.26 | 1.686 | –9.59 | 0.040 | blue spiral galaxy interacting (strong Hα emission line) |
| 588017604156784724 | 190 | 14:14:33.2 | +40:45:22.9 | 0.042 | −20.86 | 1.614 | –9.92 | 0.041 | blue galaxy interacting (strong Hα emission line) |
| 588017991233110227 | 206 | 14:37:33.0 | +08:04:43.0 | 0.050 | −21.62 | 2.353 | –10.55 | 0.051 | dwarf galaxy |
| 588018254297038899 | 209 | 16:18:18.7 | +34:06:40.1 | 0.047 | −21.58 | 2.307 | –10.59 | 0.048 | blue disturbed spiral galaxy (strong Hα emission line) |
Notes. Column (1) is the SDSS DR7 ObjID; Cols. (2) the object ID for the galaxies taken from S09; Cols. (3) and (4) galaxy coordinates (epoch J2000); Col. (5) the spectroscopic redshift of blue ETGs from SDSS; Col. (6) the r-band absolute magnitude; Col. (7) the u−r colours; Col. (8) the specific star formation rates; Col. (9) the spectroscopic redshift (zcomp) of nearby companions from SDSS; Col. (10) details obtained from the visual inspection of SDSS gri composite images and the companion-galaxy SDSS spectrum.
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