THE DISTANCE OF A GROUP OF EARLY TYPE STARS IN NORMA

[1] [Anonymous], 1958, LOWELL OBS B

[2] 2-DIMENSIONAL SPECTRAL CLASSIFICATION BY NARROW-BAND PHOTOMETRY FOR B-STARS IN CLUSTERS AND ASSOCIATIONS [J]. ASTROPHYSICAL JOURNAL, 1958, 128 (02) : 185 - 206

[3] EARLY-TYPE STARS USED AS STANDARDS IN PHOTOELECTRIC H-BETA PHOTOMETRY [J]. ASTROPHYSICAL JOURNAL, 1960, 132 (01) : 66 - 67

[4] Feast M. W., 1957, MEM ROY ASTRON SOC, V68, P1

[5] SPECTRAL CLASSIFICATION AND PHOTOMETRY OF SOUTHERN B-STARS [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1961, 122 (03) : 239 - 253

[6] FEAST MW, MEM RAS

[7] GONZALEZ G, 1955, B TONANTZINTLA TACUB, V13, P3

[8] GONZALEZ G, 1954, B TONANTZINTLA TACUB, V11, P25

[9] GRAHAM JA, IAU URSI S, V20

[10] JOHNSON HL, 1958, LOWELL OBS B, V4, P47

[1] [Anonymous], 1958, LOWELL OBS B

[2] 2-DIMENSIONAL SPECTRAL CLASSIFICATION BY NARROW-BAND PHOTOMETRY FOR B-STARS IN CLUSTERS AND ASSOCIATIONS [J]. ASTROPHYSICAL JOURNAL, 1958, 128 (02) : 185 - 206

[3] EARLY-TYPE STARS USED AS STANDARDS IN PHOTOELECTRIC H-BETA PHOTOMETRY [J]. ASTROPHYSICAL JOURNAL, 1960, 132 (01) : 66 - 67

[4] Feast M. W., 1957, MEM ROY ASTRON SOC, V68, P1

[5] SPECTRAL CLASSIFICATION AND PHOTOMETRY OF SOUTHERN B-STARS [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1961, 122 (03) : 239 - 253

[6] FEAST MW, MEM RAS

[7] GONZALEZ G, 1955, B TONANTZINTLA TACUB, V13, P3

[8] GONZALEZ G, 1954, B TONANTZINTLA TACUB, V11, P25

[9] GRAHAM JA, IAU URSI S, V20

[10] JOHNSON HL, 1958, LOWELL OBS B, V4, P47