BLUE STRAGGLERS IN THE CORE OF THE GLOBULAR-CLUSTER 47-TUCANAE

被引：117

作者：

PARESCE, F

SHARA, M

MEYLAN, G

BAXTER, D

GREENFIELD, P

JEDRZEJEWSKI, R

NOTA, A

SPARKS, WB

ALBRECHT, R

BARBIERI, C

BLADES, JC

BOKSENBERG, A

CRANE, P

DEHARVENG, JM

DISNEY, MJ

JAKOBSEN, P

KAMPERMAN, TM

KING, IR

MACCHETTO, F

MACKAY, CD

WEIGELT, G

机构：

[1] EUROPEAN SPACE TECHNOL CTR,EUROPEAN SPACE AGCY,DEPT SPACE SCI,DIV ASTROPHYS,2200 AG NOORDWIJK,NETHERLANDS

[2] SPACE TELESCOPE EUROPEAN COORDINATING FACIL,W-8046 GARCHING,GERMANY

[3] OSSERV ASTRON PADOVA,I-35122 PADUA,ITALY

[4] ROYAL GREENWICH OBSERV,CAMBRIDGE CB3 0EZ,ENGLAND

[5] EUROPEAN SO OBSERV,W-8046 GARCHING,GERMANY

[6] CNRS,ASTRON SPATIALE LAB,F-13012 MARSEILLE,FRANCE

[7] SPACE RES INST,3584 CA UTRECHT,NETHERLANDS

[8] UNIV CALIF BERKELEY,DEPT ASTRON,BERKELEY,CA 94720

[9] UNIV CAMBRIDGE,INST ASTRON,CAMBRIDGE CB3 0HA,ENGLAND

[10] MAX PLANCK INST RADIOASTRON,W-5300 BONN 1,GERMANY

来源：

NATURE | 1991年 / 352卷 / 6333期

关键词：

D O I：

10.1038/352297a0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

High-resolution observations of the core of the globular cluster 47 Tucanae with the Faint Object Camera on the Hubble Space Telescope reveal a high density of 'blue straggler' stars, occupying the upper end of the main sequence from which all stars in the cluster should have long since evolved. Their presence in the dense core supports the hypothesis that they formed by stellar collision and coalescence, and, as the heaviest objects in the cluster, have drifted to the core.

引用

页码：297 / 301

页数：5

共 26 条

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