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Detection of Accreting Gas Toward HD 45677: A Newly Recognized, Herbig Be Proto-Planetary System

机译：探测HD 45677的增压气体：一种新认识的Herbig Be原行星系统

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We report detection of high velocity, accreting gas toward the Be star with IRexcess and bipolar nebula, HD 45677. High velocity (+200 to +400 km/s), variable column density gas is visible in all IUE spectra from 1979-1992 in transitions of Si II, C II, Al III, Fe III, Si IV, and C IV. Low-velocity absorption profiles from low oscillator-strength transitions of Si II, Fe II, and Zn II exhibit double-peaked absorption profiles similar to those previously reported in optical spectra of FU Orionis objects. The UV absorption data, together with previously reported analyses of the IR excess and polarization of this object, suggest that HD 45677 is a massive, Herbig Be star with an actively accreting circumstellar, proto-planetary disk.

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Grady, C. A.; Bjorkman, K. S.; Shepherd, D.; Schulte-ladbeck, R. E.; Perez, M. R.;
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年度 1993
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总页数 14
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
B stars; Stellar envelopes; Stellar mass accretion; Ultraviolet absorption; Absorption spectra; Line spectra; Massive stars; Emission spectra; Stellar evolution; Stellar structure; Ultraviolet astronomy;

机译：B星;恒星包络;恒星质量增加;紫外吸收;吸收光谱;线谱;大质量恒星;发射光谱;恒星演化;恒星结构;紫外天文学;

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机译：杰出的Herbig Ae星HD 101412：首次检测出已解析的磁分裂线和Herbig星中的化学斑点
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机译：出色的Herbig Ae星HD 101412：首次检测到解析的磁分裂线和Herbig星中存在化学斑点†
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7. Detection of accreting gas toward HD 45677: A newly recognized, Herbig Be proto-planetary system [O] . Bjorkman K. S., Grady C. A., Dewinter D., 1993

机译：检测朝向HD 45677的积聚气体：新近认可的Herbig Be原始行星系统
8. Detection of accreting gas toward HD 45677: A newly recognized, Herbig Be proto-planetary system [R] . Grady, C. A., Bjorkman, K. S., Shepherd, D., 1993

机译：检测到HD 45677的吸入气体：一种新认识的Herbig Be原行星系统

Detection of Accreting Gas Toward HD 45677: A Newly Recognized, Herbig Be Proto-Planetary System

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