Accretion channeling in classical T Tauri stars

被引：0

作者：

Gregory, SG ^{[1
]}

Jardine, M ^{[1
]}

Cameron, AC ^{[1
]}

Donati, JF ^{[1
]}

机构：

[1] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

来源：

PROCEEDINGS OF THE 13TH CAMBRIDGE WORKSHOP ON COOL STARS, STELLAR SYSTEMS AND THE SUN - PROCEEDINGS, VOLS 1 AND 2 | 2005年 / 560卷

关键词：

stars : pre-main sequence; stars : magnetic fields; stars : formation; stars : coronae;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is now accepted that accretion in classical T Tauri stars is controlled by the stellar magnetosphere, as opposed to the traditional disk boundary layer model. The magnetosphere truncates the disk at several stellar radii allowing material to couple to the field and fall toward the star. Observations indicate the presence of hot spots on the stellar surface where accretion flows impact the photosphere. By considering magnetic fields with a realistic degree of complexity we demonstrate that the geometry of the field strongly affects the location and distribution of hot spots - the signatures of accretion.

引用

页码：191 / 197

页数：7

共 50 条

[11]

BOUVIER J, 1993, VIZIER ONLINE DATA C, V410, P10485

[12]

CAMENZIND M, 1990, REV MODERN ASTRONOMY, V3, P234, DOI [10.1007/978-3-642-76238-3, DOI 10.1007/978-3-642-76238-3_17]

[13]

Cameron A. C., 1993, Astronomy and Astrophysics, V274, P309

[14] Magnetic cycles of HR 1099 and LQ Hydrae [J].

Donati, JF .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1999, 302 (03) :457-481

[15]

Donati JF, 1997, MON NOT R ASTRON SOC, V291, P1

[16]

DONATI JF, 2004, SF2A2004 SEMAINE AST

[17] SPECTROSCOPIC EVIDENCE FOR MAGNETOSPHERIC ACCRETION IN CLASSICAL, T-TAURI STARS [J].

EDWARDS, S ;

HARTIGAN, P ;

GHANDOUR, L ;

ANDRULIS, C .

ASTRONOMICAL JOURNAL, 1994, 108 (03) :1056-1070

[18]

Ferreira J, 1997, ASTRON ASTROPHYS, V319, P340

[19] ACCRETION BY ROTATING MAGNETIC NEUTRON STARS .3. ACCRETION TORQUES AND PERIOD CHANGES IN PULSATING X-RAY SOURCES [J].

GHOSH, P ;

LAMB, FK .

ASTROPHYSICAL JOURNAL, 1979, 234 (01) :296-316

[20] Time-dependent accretion by magnetic young stellar objects as a launching mechanism for stellar jets [J].

Goodson, AP ;

Winglee, RM ;

Bohm, KH .

ASTROPHYSICAL JOURNAL, 1997, 489 (01) :199-209

← 1 2 3 4 5 →