To aid in learning the classifications, the types assigned by Hubble, Sandage, Holmberg, de Vaucouleurs, van den Bergh, and Morgan to galaxies illustrated in this chapter are listed in table 2. The illustrated examples are insufficient to show all complications, and reference should be made to various classification catalogs, supplemented by published photographs. Some of the more extensive classification lists are: (1) Pettit (1954) and the Hubble Atlas for the modified Hubble system, (2) Holmberg (1958), (3) de Vaucouleurs (1963b), (4) van den Bergh (1959, 1960a, b, c), and (5) Morgan (1958, 1959). (6)
Name | |||||
NGC | Hubble | Holmberg | de Vaucouleurs | van den Bergh | Morgan |
Thin Multiple-Armed Spirals (Plate II) | |||||
5273 | S02/Sa(s) | - | SA(s)00 | E 1(p?) | gKD2 |
1302 | Sa | - | (R)SB(r)o/a | S(B)a | kB1 |
2811 | Sa | - | SB(rs)a | Sb+ II-III | - |
3898 | Sa | - | SA(s)ab | Sb- II | kD5-KS5 |
2841 | Sb | Sb- | SA(r:)b | Sb- I | kS5 |
488 | Sb | Sb- | SA(r)b | Sb- I | kS2 |
Thin Multiple-Armed Spirals (Plate III) | |||||
5055 | Sb | Sb+ | SA(rs)bc | Sb+II | gS4 |
628 | Sc | Sc- | SA(s)c | Sc I | fgS1 |
5457 | Sc | Sc- | SAB(rs)cd | Sc I | fS1 |
3810 | Sc | Sc- | SA(rs)c | Sc I | fS3 |
6643 | Sc | Sc- | SA(rs)c | Sc I-II | - |
5204 | Sc/Irr | Sc+ | SA(s)m | Ir+ IV | fI-fS4 |
Massive-Armed Spirals Plate IV | |||||
4293 | Sa | - | RSB(s)o/a | Pec | fg:S6 |
4569 | Sb | Sb+ | SAB(rs)ab | Sb+n | fS4p |
3623 | Sa | Sa | SAB(rs)a | Sbn II: | gS5 |
6814 | Sb | - | SAB(rs)bc | Sb+ I | - |
5248 | Sc | Sc- | SAB(rs)bc | Sc I | fS4 |
5194 | Sc | Sc- | SA(s)bcp | Sc(t) I | fS1 |
157 | Sc | Sc- | SA(rs)bc | Sc(*)I | afS3 |
598 | Sc | Sc+ | SA(s)cd | Sc II-III | fS3 |
Ordinary-Barred Transitions Plate V | |||||
4579 | Sb/SBb | Sb- | SAB(rs)b | Sbn | gk S3-gKB |
3504 | SBb(s)/Sb | - | SAB(s)ab | Sb(t?) | fg B1? |
6951 | SBb(s)Sb | Sb+ | SAB(rs)bc | Sbp I-II | f:S1p-f:BpN |
5236 | Sc/SBb | - | SAB(s)c | - | fgS1 |
4088 | SBc/Sc | Sc- | SAB(s)bc | Sc* I-II | a:B:4 |
925 | Sc/SBc | Sc+ | SAB(s)d | S(B)c II-III | afB |
Barred Spirals r and s Types Plate VI | |||||
7743 | SBa(s) | - | (R?)SB(s)0+ | Sa? | gkB1 |
3185 | SBa(s) | Sa | (R)SB(r)a | S(B)b+ III | fB |
1300 | SBb(s) | Sb+ | SB(rs)bc | SBb I | fB2 |
7741 | SBc(s) | Sc+ | SB(s)cd | SBc II | afB |
4643 | SB03/SBa(r) | - | SB(rs)o/a | SBa | kB |
1398 | SBb(r) | - | (R')SB(r)ab | S(B)b- I | kB2 |
2523 | SBb(r) | - | SB(r)bc | SBb- I | fgB |
1073 | SBc(sr) | Sc+ | SB(rs)c | S(B)c II | afB1 |
Magellanic Cloud and Irregular Types Plate VII | |||||
4395 | Sc/Irr | Sc+ | Sa(s:)m | S+ IV-V | aS1 |
SMC | Irr | - | IB(s)mp | III-IV | - |
LMC | Irr | - | SB(s)m | Ir IV-V | - |
Hol II | Irr | Ir I | Im | Ir IV-V | - |
2366 | Irr | Ir I | dIB(s)m | Ir IV-V | aL? |
IC 2574 | Irr | Ir I | SAB(s)m | Ir IV-V | - |
6 Recall that Holmberg does not
separate the ordinary and barred
spirals and thqat van den Bergh does not distinguish E, S0, and
edge-on spirals (spindles) because of the burned-out nature of the Sky
Survey prints. Back.