Table 1
Details of sample stars.
| Designation | RA | Dec | SpT | V | E(B − V) |
|---|---|---|---|---|---|
| J2000 | (mag) | (mag) | |||
| HD 24912 | 03:58:57.90 | +35°47′27.71″ | O8IV | 4.06 | 0.35 |
| HD 34816 | 05:19:34.52 | −13°10′36.44″ | B0.5IV | 4.29 | 0.05 |
| HD 36861 | 05:35:08.27 | +09°56′02.96″ | O8III | 3.47 | 0.09 |
| HD 38087 | 05:43:00.57 | −02°18′45.38″ | B3II | 8.29 | 0.31 |
| HD 47839 | 06:40:58.66 | +09°53′44.72″ | O7V | 4.64 | 0.07 |
| HD 53367 | 07:04:25.53 | −10°27′15.74″ | B0IV e | 6.96 | 0.74 |
| HD 62542 | 07:42:37.22 | −42°13′47.84″ | B3V | 8.03 | 0.36 |
| HD 64760 | 07:53:18.16 | −48°06′10.56″ | B0.5III | 4.24 | 0.08 |
| HD 65575 | 07:56:46.71 | −52°58′56.47″ | B3IV | 3.43 | 0.05 |
| HD 108639 | 12:29:09.51 | −60°48′17.55″ | B1III | 8.57 | 0.35 |
| HD 147933 | 16:25:35.10 | −23°26′48.70″ | B1.5V | 5.05 | 0.47 |
| HD 149404 | 16:36:22.56 | −42°51′31.90″ | O8.5Ia | 5.52 | 0.62 |
| HD 149757 | 16:37:09.54 | −10°34′01.53″ | O9.2V | 2.56 | 0.31 |
| HD 151804 | 16:51:33.72 | −41°13′49.93″ | O8Iab | 5.22 | 0.30 |
| HD 154368 | 17:06:28.37 | −35°27′03.77″ | O9.5Ia | 6.13 | 0.76 |
| HD 165024 | 18:06:37.87 | −50°05′29.31″ | B4II | 3.66 | 0.05 |
| HD 188209 | 19:51:59.07 | +47°01′38.42″ | O9.5III | 5.63 | 0.15 |
| HD 190918 | 20:05:57.32 | +35°47′18.15″ | O9.7Ia | 6.75 | 0.41 |
| HD 192639 | 20:14:30.43 | +37°21′13.81″ | O7.5Iab | 7.11 | 0.61 |
| HD 206773 | 21:42:24.18 | +57°44′09.79″ | B0V e | 6.87 | 0.45 |
| HD 210839 | 22:11:30.58 | +59°24′52.15″ | O6Ib | 5.05 | 0.57 |
| HD 214680 | 22:39:15.68 | +39°03′00.97″ | O9.5V | 4.88 | 0.08 |
Notes. We specify coordinates, spectral type, visual magnitude and extinction along the sightline, and reddening. Stars where we detect far-IR excess emission are marked in bold. HD 38087 is a binary, HD 53367 is a Herbig Be binary, HD 190918 is a WR+O star binary, HD 206773 is a Be star, HD 149404 is a multiple object, HD 214680 shows no sign of a binary in our two HR spectra despite that it is marked as a binary in SIMBAD.
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