An optimal extraction of spatially blended spectra

被引：21

作者：

Hynes, RI ^{[1
]}

机构：

[1] Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England

来源：

ASTRONOMY & ASTROPHYSICS | 2002年 / 382卷 / 02期

关键词：

techniques; spectroscopic;

D O I：

10.1051/0004-6361:20011657

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We describe an algorithm to optimally extract individual spectra of blended sources from a long slit spectrum. A semi-analytic model for the spatial profile is used: a Voigt profile for the undersampled core with a numerical correction applied to the wings. This is derived from an isolated source which must also be placed on the slit. chi(2) fitting is used to separate the blended components with maximum weight given to the best data. We demonstrate the successful application of the algorithm to data on two X-ray binaries in crowded fields: XTE J2012+381 and V404 Cyg.

引用

页码：752 / 757

页数：6

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