*3.29 m feature Elias 1 A6 6-10. 140 15.30 110 6.7 8.0 1100 6.7 < 1.4 200 38. 0.0026 BHJLM a HD 259431 B6 1.66 800 8.70 78 10. 6.0 4800 30. > 6.0 4800 5.6 > 130. 86. 0.0038 F b HD 97048 B9.5 1.4 140 8.46 180 13. 2.5 350 23. > 2.5 350 17. 2.1 38.0 40. 0.0062 ABCL a <10.5 1500 V921 Sco B0 5.0 2600 11.43 240 130. 7.5 19500 450. > 7.5 19500 7.1 >2700. 1300. 0.0044 BF b TY CrA B8 3.0 130 8.99 870 20. 6.0 780 > 20. > 2.5 325 > 2.8 > 0.30 110. >0.0021 LD c XY Per A2+B6 1.24 350 9.36 46 2 3.8 0.2 1.5 520 3.8 < 1.5 520 5.9 < 1.6 4.4 0.0091 BNP Lk Halp 25 B8 3.0 800 12.75 108 9 0.76 0.06 1.5 1200 0.76 < 1.5 1200 3.4 < 4.9 NP AS 310 B2+B5 3.9 2500 12.49 1000 80 0.76 0.23 1.4 3500 130. > 1.4 3500 >28. > 340. 550. >0.0029 N d *3.29 m feature in reflection nebula HD 200775 B3 1.8 440 7.36 < 76 < 22. 6.0 2600 270. >28.0 12000 5.0 > 720. 940. 0.0032 I e *Possible 3.29 m feature HK Ori A4 1.5 460 11.66 41 16 0.87 0.45 1.4 640 0.87 70 22. < 0.11 LN f HD 245185 A2 0.1 400 9.90 43 17 0.35 0.18 1.4 560 0.35 110 4.8 < 0.061 3.2 0.0011 N *No 3.29 m feature detected but IRAS LRS 7.7 and 11.3 micron features Lk Halp 215 B5 2.1 800 10.36 < 85 < 3.1 1.4 1100 > 26. 4000 >11. > 13. 140. >0.0021 BN d MWC 1080 B0 5.3 2500 11.68 < 4 < 1.4 1.4 3500 > 24. 61000 > 0.34 > 4.2 45. >0.0070 EO d *No 3 m spectra but IRAS LRS 7.7 and 11.3 micron features MWC 137 B0 4.5 1300 11.84 > 45. 61000 200. >0.0028 d RCW 34 O8.5 4.2 2900 11.81 > 48. 92000 890. >0.0068 d *No 3.29 m feature detected (this work) Lk Halp 198 B8 4.4 600 14.32 < 16 < 1.5 1.4 840 < 1.5 900 < 8.6 < 6.9 55. <0.00034 ELN g BD+61 154 B8 2.2 650 10.38 < 12 < 0.9 1.4 910 < 0.9 900 < 0.92 < 0.74 O AB Aur A0 0.4 160 7.07 < 20 < 10.8 1.4 220 < 10.8 190 < 6.5 < 0.24 68. <0.0016 EN h T Ori A3 1.1 460 10.35 < 27 < 1.5 1.4 640 < 1.5 88 <15. < 0.11 BN V380 Ori A1 1.5 460 10.37 < 12 < 1.0 1.4 640 < 1.0 150 < 5.6 < 0.13 11. <0.00095 BN HD 250550 B9 0.3 700 9.54 < 26 < 1.2 1.4 980 < 1.2 410 < 5.0 < 0.83 5.0 <0.0024 LN Lk Halp 208 B7 1.7 1000 11.62 < 49 < 0.3 1.4 1400 < 0.3 1600 <10. < 2.3 5.4 <0.00062 LN R Mon B6 4.4 800 12.80 < 22 < 6.6 1.4 1100 2400 81. EN HD 150193 A2 1.5 160 8.80 < 8 < 0.8 1.4 220 < 0.8 110 < 1.2 < 0.014 LO HD 163296 A0 0.3 160 6.83 < 8 < 2.0 1.4 220 < 2.0 190 < 1.1 < 0.038 18. <0.0011 O Lk Halp 118 B5 3.3 1900 11.13 < 91 < 0.7 1.4 2700 4000 N VV Ser B9 3.0 440 11.87 < 7 < 0.5 1.4 620 < 0.5 410 < 1.7 < 0.29 EO WW Vul A3 0.9 700 10.62 < 44 < 0.9 1.4 980 < 0.9 88 <14. < 0.10 2.0 <0.0047 N V1685 Cyg B2 3.0 1000 10.54 < 20 < 2.0 1.4 1400 21000 LN V1686 Cyg B5 4.8 1000 12.90 < 15 < 1.8 1.4 1400 4000 N BD+46 3471 A0 1.0 900 8.21 < 20 < 1.0 1.4 1300 < 1.0 190 < 1.0 < 0.037 LN Lk Halp 233 A7 2.2 880 13.56 < 20 < 0.4 1.4 1200 < 0.4 320 <43. < 4.4 17. <0.00026 LN