Abstract
A quantitative one-dimensional scheme of galaxy classification is
proposed based on the luminosity of the spheroidal component
Lsph. After noting previous work showing the correlations
between color, velocity dispersion, scale, metallicity, and degree of
rotational support with Lsph, the authors show that the
Hubble type correlates as well. The authors find that (in terms of blue
magnitudes, with H0 = 100 km/s/Mpc), if Msph <
-20 the system is almost always an elliptical, if -20 <
Msph < -17 comparable frequencies of elliptical, S0, and
spirals are found, and if -17 < Msph < -16 the systems
are typically spiral or irregular. Due to incompleteness of the
observational data, little conclusive can be said about systems with
Msph > -16.
Original language | English |
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Pages (from-to) | 1451-1460 |
Journal | Astronomical Journal |
Volume | 89 |
Issue number | 10 |
DOIs | |
State | Published - 1984 |
Keywords
- Galactic Evolution
- Galactic Radiation
- Luminosity
- Spheroids
- Classifications
- Color
- Data Sampling
- Elliptical Galaxies
- Spiral Galaxies