Disclaimer: The following document (from catalogue VII/155) results from an on-line translation from latex to html (the cgiprint tool developed at CDS). The correct presentation requires an execution of latex on the original file
This description is an excerpt from the Documentation for the Computer-Readable Version of the Second Reference Catalogue of Bright Galaxies (RC2), catalogue numbered VII/122, prepared by Theresa A. Nagy and Robert S. Hill (April 1981), revised by Suzan E. Gessner and Lee E. Brotzman (December 1990) for NASA Goddard Space Flight Center, Greenbelt, MD 20771
Classes | Families | Varieties | Stages | T | Type | Code |
Ellipticals | Compact | –6 | cE | cE . . . | ||
Ellipt. (0–6) | –5 | E0 | . E . 0 . | |||
Intermediate | –5 | E0–1 | . E . 0+ | |||
``cD'' | –4 | E+ | . E+ . . | |||
Lenticulars | S0 | . L | ||||
Non-barred | SA0 | . LA | ||||
Barred | SB0 | . LB | ||||
Mixed | SAB0 | . LX | ||||
Inner ring | S(r)0 | . L . R | ||||
S-shaped | S(s)0 | . L . S | ||||
Mixed | S(rs)0 | . L . T | ||||
Early | –3 | S0- | . L . . – | |||
Intermediate | –2 | S0○ | . L . . 0 | |||
Late | –1 | S0+ | . L . . + | |||
Spirals | Non-barred | SA | . SA | |||
Barred | SB | . SB | ||||
Mixed | SAB | . SX | ||||
Inner ring | S(r) | . S . R | ||||
S-shaped | S(s) | . S . S | ||||
Mixed | S(rs) | . S . T | ||||
0/a | 0 | S0/a | . S . . 0 | |||
a | 1 | Sa | . S . . 1 | |||
ab | 2 | Sab | . S . . 2 | |||
b | 3 | Sb | . S . . 3 | |||
bc | 4 | Sbc | . S . . 4 | |||
c | 5 | Sc | . S . . 5 | |||
cd | 6 | Scd | . S . . 6 | |||
d | 7 | Sd | . S . . 7 | |||
dm | 8 | Sdm | . S . . 8 | |||
m | 9 | Sm | . S . . 9 | |||
Irregulars | Non-barred | IA | . IA | |||
Barred | IB | . IB | ||||
Mixed | IAB | . IX | ||||
S-shaped | I(s) | . I . S | ||||
Non-Magellanic | 90 | I0 | . I . 0 | |||
Magellanic | 10 | Im | . I . . 9 | |||
Compact | 11 | cI | cI | |||
Peculiars | 99 | Pec | . P | |||
Peculiarities | Peculiarity | pec | . . . . . P | |||
(All types) | Uncertain | : | . . . . * | |||
Doubtful | ? | . . . . ? | ||||
Spindle | sp | . . . . . / | ||||
Outer ring | (R) | R . . . . . . | ||||
Pseudo-outer R | (R') | P . . . . . . |
Hubble | Revised | T |
E | E | -5 |
E-S0 | L-: | -3: |
S0 | L | -2 |
IrrII | I0 | 0: |
S0/a | S0/a | 0 |
Sa | Sa | 1 |
Sa-b | Sab | 2 |
Sb | Sb | 3 |
Sb-c | Sbc | 4 |
Sc | Scd: | 6: |
Sc-Irr | Sdm: | 8: |
IrrI | Im | 10 |
S... | S. | 3? |
S``early'' | S.(Sa?) | 1? |
S``late'' | S.Sc? | 5? |
Observatory | Tel. Ap. | Code | Observatory | Tel. Ap. | Code |
(in.) | (in.) | ||||
Palomar | 200 | P200. | Mt. Wilson | 60 | W060. |
Lick | 120 | L120. | Tautenburg | 52 | T052. |
Mt. Wilson | 100 | W100. | Palomar (prints) | 48 | P048. |
McDonald | 82 | M082. | Palomar (glass) | 48 | PG48. |
Radcliffe | 74 | R074. | ESO | 40 | E040. |
Mt. Stromlo | 74 | S074. | Siding Spring | 40 | S040. |
USNO (Flagstaff) | 61 | N061. | Lick | 36 | L036. |
Boyden | 60 | B060. | Mt. Stromlo | 30 | S030. |
Cordoba | 60 | C060. |
Code | Reference |
....B | Buta, R., Publ. Warner and Swasey Obs., II, in press, 1976 |
....C | Corwin, H. G., Publ. Dept. Astr. U. Texas, II, 2, No. 12, 1968; II, 3, No. 5, 1970; PASP, 83, 320, 1971; unpublished 1971-1975. |
....F | Fisher, J. R., and Tully, R. B., A&A, 44, 151, 1975 |
....H | Holmberg, E., et al., A&AS, 18, 463 and 491, 1974 |
....N | Nilson, P., UGC, 1973; Uppsala Obs. Rep. No. 5, 1974 |
....R | Rood, H. J., and Baum, W. A., AJ, 72, 398, 1967 |
....V | de Vaucouleurs, G., ApJS, No. 74, 1963; RC1, 1964; unpublished 1964-1975. |
Classes | Type | Code | Classes | Type | Code |
Elliptical | E(0-7) | E0 | Irregular | I | I |
E-D | ED | S-I | SI | ||
D-E | DE | I-S | IS | ||
S-E | SE | I-B | IB | ||
D | B-I | BI | |||
D-S | DS | Peculiarities | L(1) | ..L | |
S-D | SD | P | ..P | ||
S | S | ?,: | * | ||
Color | |||||
Classes | Code | ||||
B | B | a | A | ||
(B) | SX | af | AF | ||
B-S | BS | f | F | ||
S-B | SB | fg | FG | ||
g | G | ||||
gk | GK | ||||
k | K | ||||
: | * | ||||
(1) Low surface brightness |
Classes | Families | Stages | Type | Coding | Notes |
Elliptical | Ellipcicity (0-9) | E0 | E 0 | (1) | |
Sprial | Ordinary | S | S | ||
Barred | SB | S B | |||
Intermediate | S (B) | S X | |||
a | Sa | S 0 | |||
b- | Sb- | S 2 | |||
b | Sb | S 3 | |||
b+ | Sb+ | S 4 | |||
c | Sc | S 5 | |||
- | S- | S 6 | |||
+ | S+ | S 7 | |||
Irregular | Ir | I | |||
Ir+ | I 9 | ||||
Peculiar | P | P | |||
Peculiarities | Bright nucleus | N | N | ||
Nebulous arms, mild case | (n) | N- | (2) | ||
Nebulous arms, normal | n | N | |||
Nebulous arms, extreme | nn | N+ | |||
Patchy arms, mild case | (*) | K- | |||
Patchy arms, normal | * | K | |||
Patchy arms, extreme | ** | K+ | |||
Distorted arms,mild case | (t) | T- | |||
Distorted arms, normal | t | T | |||
Distorted arms, extreme | tt | T+ | |||
Peculiarity | p | P | |||
Uncertain ?,:,() | * * * | (3) | |||
Luminosity | Code | Luminosity | Code | ||
Classes | Classes | ||||
I | 1 | III-IV | 6 | ||
I-II | 2 | IV | 7 | ||
II | 3 | IV-V | 8 | ||
II-III | 4 | V | 9 | ||
III | 5 | ||||
(1) Includes lenticulars, especially in ES, E9 | |||||
(2) Combined cases are coded NK, NT, etc | |||||
(3) Applies to symbol or group of symbols immediately preceding it |