A multivariate statistical analysis of spiral galaxy luminosities. I. Data and results

Дата и время публикации : 2001-06-20T15:30:27Z

Авторы публикации и институты :
Alice Shapley
G. Fabbiano
P. B. Eskridge

Оригинал статьи :http://arxiv.org/abs/astro-ph/0106361v2

Скачать pdf : http://arxiv.org/pdf/astro-ph/0106361v2

Ссылка на журнал-издание: Astrophys.J.Suppl. 137 (2001) 139-200
Коментарии к статье: Ссылка на журнал-издание не найдена
Первичная категория: astro-ph

Все категории : astro-ph

Краткий обзор статьи: We have performed a multiparametric analysis of luminosity data for a sample of 234 normal spiral and irregular galaxies observed in X-rays with the {it Einstein Observatory}. This sample is representative of S and Irr galaxies, with a good coverage of morphological types and absolute magnitudes. In addition to X-ray and optical da ta, we have compiled H-band magnitudes, IRAS near- and far-infrared, and 6cm radio co ntinuum observations for the sample from the literature. We have also performed a carefu l compilation of distance estimates. We have explored the effect of morphology by dividing the sample into early (S0/a-Sab), intermediate (Sb-Sbc), and late-type (Sc-Irr) subsamples. The data were analysed with bivariate and multiv ariate survival analysis techniques that make full use of all the information available in both detections and limits.

Category: Physics