30. G8
The spectral type (except for the supergiants) is determined from
the ratios 
4144:
H
and
4096:
H and the ratio of the blend at
4030-4034 to the violet side of the G band. On the
spectrograms used,
H appears to be stronger in
dwarfs of this class than in giants and subgiants.
| Star | MKK | a | | m | HD | Note |
 Cet...... | G8 V | 01:39 | -16°28' | 3.7 | K0 | |
| Lep...... | G8 pec | 05:47 | -20 53 | 3.9 | K0 | 1 |
 Gem.... | G8 III | 07:19 | +28 00 | 3.9 | K0 | |
 Gem.... | G8 III | 07:38 | +24 38 | 3.7 | G5 | |
| a UMa.... | G8 II-III | 10:57 | +62 17 | 2.0 | K0 | |
| 61 UMa. | G8 V | 11:35 | +34 46 | 5.5 | G5 | |
| S 3582... | G8 V | 11:47 | +38 26 | 6.5 | G5 | |
 Vir...... | G8 III | 12:57 | +11 30 | 3.0 | K0 | |
 Boo A. | G8 V | 14:46 | +19 31 | 4.8 | G5 | |
 Boo
... | G8 III | 14:58 | +40 47 | 3.6 | G5 | |
| Boo ... | G8 III | 15:11 | +33 41 | 3.5 | K0 | |
| Oph.... | G8 III | 16:13 | -04 27 | 3.3 | K0 | |
 Dra ... | G8 III | 16:22 | +61 44 | 2.9 | G5 | |
| Dra ... | G8 III | 19:12 | +67 29 | 3.2 | K0 | |
| Cyg ... | G8 III | 19:14 | +53 11 | 4.0 | K0 | |
| Aql
... | G8 IV | 19:50 | +06 09 | 3.9 | K0 | |
 Cyg
... | G8 II | 21:08 | +29 49 | 3.4 | K0 | |
| µ Peg ... | G8 III | 22:45 | +24 04 | 3.7 | K0 | |
| And ... | G8 III-IV | 23:32 | +45 55 | 4.0 | K0 | |
| NOTE | ||||||
| 1. The luminosity criteria of this high-velocity star are
conflicting.
The ratio 4071:
4077 indicates a giant,
while the CN break at
4215 is almost invisible, as in class IV-V.
| ||||||
Some of the most important luminosity line ratios are
4045:
4077,
4063:
4077, and
4144:
4077. The break in the
continuous
spectrum at 4215 is one of
the most sensitive discriminants of
absolute magnitude. Other features are noted on the Atlas print.
 |
| High resolution image |
 |
| High resolution image |
