The luminosity function of M3

被引：41

作者：

Rood, RT

Carretta, E

Paltrinieri, B

Ferraro, FR

Pecci, FF

Dorman, B

Chieffi, A

Straniero, O

Buonanno, R

机构：

[1] Univ Virginia, Dept Astron, Charlottesville, VA 22903 USA

[2] Osserv Astron Padova, I-35122 Padua, Italy

[3] Univ Roma La Sapienza, Ist Astron, I-00161 Rome, Italy

[4] European So Observ, D-85748 Garching, Germany

[5] Osservatorio Astron Bologna, I-40126 Bologna, Italy

[6] Staz Astron Cagliari, I-09012 Capoterra, Italy

[7] NASA, Goddard Space Flight Ctr, Astron & Solar Phys Lab, Greenbelt, MD 20771 USA

[8] CNR, Ist Astrofis Spaziale, I-00044 Frascati, Italy

[9] Osservatorio Astron Collurania, I-64100 Teramo, Italy

[10] Osserv Astron Roma, I-00040 Monte Porzio Catone, Italy

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 523卷 / 02期

关键词：

globular clusters : individual (M3); stars : evolution; stars : late-type; stars : luminosity function; mass function;

D O I：

10.1086/307767

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a high-precision, large-sample luminosity function (LF) for the Galactic globular duster M3. With a combination of ground-based and Hubble Space Telescope data we cover the entire radial extent of the cluster. The observed LF is well fitted by canonical standard stellar models from the red giant branch (RGB) tip to below the main-sequence turnoff point. Specifically, neither the RGB LF bump nor subgiant branch LF indicate any breakdown in the standard models. On the main sequence we find evidence for a flat initial mass function and for mass segregation due to the dynamical evolution of the cluster.

引用

页码：752 / 762

页数：11

共 61 条

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