A study of the shell of Nova V2659 Cyg

被引:2
作者
Tarasova, T. N. [1 ]
机构
[1] Russian Acad Sci, Crimean Astrophys Observ, Nauchny, Russia
关键词
ELEMENT ABUNDANCES; V339; DEL; EMISSION; ENVELOPE;
D O I
10.1134/S106377291611007X
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Results of a study of the shell of Nova V2659 Cyg based on spectrophotometric observations carried out over a year and a half after its eruption are presented. The physical conditions in the nova shell have been studied. The electron temperature (9000 K) and density (5 x 10(6) cm(-3)) in the nebular stage have been estimated, together with the abundances of helium, oxygen, nitrogen, neon, argon, and iron. The abundances of nitrogen, oxygen, neon, and argon are enhanced relative to the solar values. The relative abundances are [N/H] = 2.26 +/- 0.25 dex, [O/H] = 1.66 +/- 0.35 dex, [Ne/H] = 0.78 +/- 0.25 dex, and [Ar/H] = 0.32 +/- 0.38 dex. The estimated mass of oxygen and total mass of the emitting shell are ae1 x 10(-4) M (aS (TM)) and ae3 x 10(-4) M (aS (TM)), respectively. In the period of chaotic brightness oscillations, the maximum velocity of the shell expansion derived from the radial velocities of the absorption components of the HI and FeII line profiles increased by ae400 km/s 41 days after the maximum, and by ae200 km/s 101 days after the maximum, reaching 1600 km/s in both cases.
引用
收藏
页码:1052 / 1066
页数:15
相关论文
共 22 条
[1]  
ALLER LH, 1984, PHYS THERMAL GASEOUS
[2]  
ANDREA J, 1994, ASTRON ASTROPHYS, V291, P869
[3]   Spectroscopic studies of three novae [J].
Arkhipova, VP ;
Burlak, MA ;
Esipov, VF .
ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS, 2002, 28 (02) :100-114
[4]  
Burnashev V. I., 1985, B ABASTUMANSK ASTROF, V59, P83
[5]  
Chochol D, 2015, ASTR SOC P, V496, P237
[7]   HEAVY ELEMENT ABUNDANCES OF NOVA CYGNI-1975 [J].
FERLAND, GJ ;
SHIELDS, GA .
ASTROPHYSICAL JOURNAL, 1978, 226 (01) :172-185
[8]  
Golovatyj V. V., 1997, ASTRON ASTROPH T, V12, P85
[9]  
Imamura K., 2014, ASTRON TELEGRAM
[10]  
Kazarovets E. V., 2015, VAR STARS, V35