FURTHER EVIDENCE FOR DIFFERENTIAL ROTATION IN V1057 CYGNI

被引：13

作者：

WELTY, AD

STROM, SE

STROM, KM

HARTMANN, LW

KENYON, SJ

GRASDALEN, GL

STAUFFER, JR

机构：

[1] HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138

[2] UNIV WYOMING,LARAMIE,WY 82071

[3] NASA,AMES RES CTR,MOFFETT FIELD,CA 94035

来源：

ASTROPHYSICAL JOURNAL | 1990年 / 349卷 / 01期

关键词：

Stars: accretion; Stars: individual (V1057 Cygni); Stars: pre-main-sequence;

D O I：

10.1086/168316

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Further tests of the accretion disk hypothesis for FU Orionis objects are presented. High spectral resolution, high signal to noise, 5820-6830 Å and 7500-9370 Å spectra of V1057 Cyg reveal a correlation between linewidth and line transition lower excitation potential expected from this hypothesis. The magnitude of the effect compares favorably with that predicted by synthetic disk spectra. Additional evidence for previously documented spectral type and linewidth versus wavelength correlations is also presented. This kinematic evidence strongly supports the accretion disk hypothesis.

引用

页码：328 / 334

页数：7

共 16 条

[1] MASS-LOSS FROM FU-ORIONIS OBJECTS [J].