INTERSTELLAR ABSORPTION TOWARDS THE NOVAE V339 DEL AND V5668 SGR

被引：3

作者：

Jack, D. ^{[1
,2
]}

Schroder, K-P ^{[1
]}

机构：

[1] Univ Guanajuato, Dept Astron, AP 144, Guanajuato 36000, Gto, Mexico

[2] Univ Hamburg, Hamburger Sternwarte, Hamburg, Germany

来源：

REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA | 2019年 / 55卷 / 02期

关键词：

lines and bands; novae; cataclysmic variables; techniques: spectroscopic; DIFFUSE BANDS; SPECTRA; LINES; MOLECULES; TIGRE; ISM;

D O I：

10.22201/ia.01851101p.2019.55.02.02

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a search and study of interstellar (IS) absorption features in the observed spectra of two Novae V339 Del and V5668 Sgr. We obtained high resolution spectra (R approximate to 20, 000) in the wavelength range between 3800 and 8800 angstrom of both novae with the TIGRE telescope. Common IS features of Na I and Ca II were identified in both novae, and the Ca II H and K features of Nova V339 Del show substructures, while a blueshifted absorption feature was found in the spectra of Nova V5668 Sgr. Absorption of K I was identified only in the spectra of Nova V5668 Sgr. The DIBs 6196, 6203, 6379, 6614 and 7562 were found in both novae, and in the spectra of Nova V5668 Sgr we could also identify the DIBs 5780, 5797 and 6660. We present the equivalent widths of all features and determined the column densities of Ca II, K I and hydrogen in the direction of Nova V5668 Sgr (log N-Ca II = 12.50, log N-KI = 11.55, log N-H = 18.5).

引用

页码：141 / 149

页数：9