ARM STRUCTURE IN NORMAL SPIRAL GALAXIES .1. MULTIVARIATE DATA FOR 492 GALAXIES

被引：25

作者：

MAGRI, C

机构：

[1] CORNELL UNIV,NATL ASTRON & IONOSPHERE CTR,ITHACA,NY 14853

[2] CORNELL UNIV,DEPT ASTRON,ITHACA,NY 14853

来源：

ASTRONOMICAL JOURNAL | 1994年 / 108卷 / 03期

关键词：

D O I：

10.1086/117120

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Multivariate data have been collected as part of an effort to develop a new classification system for spiral galaxies, one which is not necessarily based on subjective morphological properties. A sample of 492 moderately bright northern Sa and Sc spirals was chosen for future statistical analysis. New observations were made at 20 and 21 cm; the latter data are described in detail here. IRAS fluxes were obtained from archival data. Finally, new estimates of arm pattern randomness and of local environmental harshness were compiled for most sample objects.

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页码：896 / 912

页数：17

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