EXTREME-ULTRAVIOLET SPECTROSCOPY AND PHOTOMETRY OF EQ PEGASI

被引：14
|
作者：
FOSSI, BCM
LANDINI, M
FRUSCIONE, A
DUPUIS, J
机构：
[1] UNIV CALIF BERKELEY,CTR EUV ASTROPHYS,BERKELEY,CA 94720
[2] UNIV FLORENCE,DIPARTIMENTO ASTRON & SCI SPAZIO,I-50125 FLORENCE,ITALY
来源：
ASTROPHYSICAL JOURNAL | 1995年 / 449卷 / 01期
关键词：
LINE; IDENTIFICATION; STARS; FLARE; INDIVIDUAL (EQ PEGASI); ULTRAVIOLET;
D O I：
10.1086/176061
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the first spectroscopic extreme-ultraviolet observations of the star EQ Peg (dM4e+dM6e) obtained during a guest observer pointing with the Extreme Ultraviolet Explorer (EUVE) satellite. EQ Peg was detected in all three spectrometer channels (70-760 Angstrom) and was successfully monitored at the same time by the EUVE Deep Survey photometer (67-178 Angstrom). We have identified the main features observed in the spectra and conclude that a number of lines are produced by the highest ionization stages of iron. The detections in the 280-760 Angstrom range are mainly caused by second-order throughput, except for the He II lambda 304 line, Evidence of activity modulation during the observation is present in both the photometric and spectroscopic data.
引用
收藏
页码：376 / 385
页数：10
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