The stellar dynamics and mass of NGC 1316 using the radial velocities of planetary nebulae

被引：75

作者：

Arnaboldi, M ^{[1
]}

Freeman, KC

Gerhard, O

Matthias, M

Kudritzki, RP

Méndez, RH

Capaccioli, M

Ford, H

机构：

[1] Osservatorio Astron Capodimonte, I-80131 Naples, Italy

[2] Australian Natl Univ, Mt Stromlo & Siding Spring Observ, Weston, ACT 2611, Australia

[3] Univ Basel, Inst Astron, CH-4102 Binningen, Switzerland

[4] Munich Univ Observ, D-81679 Munich, Germany

[5] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

来源：

ASTROPHYSICAL JOURNAL | 1998年 / 507卷 / 02期

关键词：

galaxies : individual (NGC 1316); galaxies : ISM; galaxies : kinematics and dynamics; planetary nebulae : general;

D O I：

10.1086/306359

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a study of the kinematics of the outer regions of the early-type galaxy NGC 1316, based on radial velocity measurements of 43 planetary nebulae as well as deep integrated light absorption line spectra. The smoothed velocity held of NGC 1316 indicates fast rotation at a distance of 16 kpc, possibly associated with an elongated feature orthogonal to the inner dust lanes. The mean square stellar velocity is approximately independent of radius, and the estimated total mass of the system is 2.9 x 10(11) M. within a radius of 16 kpc, implying an integrated mass-to-light ratio of M/L-B similar or equal to 8.

引用

页码：759 / 773

页数：15

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