A SPECTRAL CLASSIFICATION OF GALAXIES

[1] BAADE WA, 1951, PUB MICH OBS, V10, P10

[2] Babocock H.W, 1939, LICK OBSERVATORY B, V498, P41, DOI DOI 10.5479/ADS/BIB/1939LICOB.19.41B

[3] A COMPARISON OF STELLAR POPULATIONS IN THE ANDROMEDA GALAXY AND ITS ELLIPTICAL COMPANION [J]. ASTRONOMICAL JOURNAL, 1955, 60 (07) : 247 - 253

[4] BOWEN IS, 1956, AJ, V61, P339

[5] REDSHIFTS AND MAGNITUDES OF EXTRAGALACTIC NEBULAE [J]. ASTRONOMICAL JOURNAL, 1956, 61 (03) : 97 - +

[6] HUMASON ML, 1936, APJ, V83, P18

[7] The rotation of the spiral nebula Messier 33 [J]. ASTROPHYSICAL JOURNAL, 1942, 95 (01) : 5 - 23

[8] THE INTEGRATED SPECTRAL TYPES OF GLOBULAR CLUSTERS [J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1956, 68 (405) : 509 - &

[9] Spectrographic studies in the red [J]. ASTROPHYSICAL JOURNAL, 1934, 80 (03) : 171 - 180

[1] BAADE WA, 1951, PUB MICH OBS, V10, P10

[2] Babocock H.W, 1939, LICK OBSERVATORY B, V498, P41, DOI DOI 10.5479/ADS/BIB/1939LICOB.19.41B

[3] A COMPARISON OF STELLAR POPULATIONS IN THE ANDROMEDA GALAXY AND ITS ELLIPTICAL COMPANION [J]. ASTRONOMICAL JOURNAL, 1955, 60 (07) : 247 - 253

[4] BOWEN IS, 1956, AJ, V61, P339

[5] REDSHIFTS AND MAGNITUDES OF EXTRAGALACTIC NEBULAE [J]. ASTRONOMICAL JOURNAL, 1956, 61 (03) : 97 - +

[6] HUMASON ML, 1936, APJ, V83, P18

[7] The rotation of the spiral nebula Messier 33 [J]. ASTROPHYSICAL JOURNAL, 1942, 95 (01) : 5 - 23

[8] THE INTEGRATED SPECTRAL TYPES OF GLOBULAR CLUSTERS [J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1956, 68 (405) : 509 - &

[9] Spectrographic studies in the red [J]. ASTROPHYSICAL JOURNAL, 1934, 80 (03) : 171 - 180