LIME: Semiautomated line measurement and identification from stellar spectra

Timur ŞAHİN

Makale detayları

LIME: Semiautomated line measurement and identification from stellar spectra

Yazarlar:

Timur ŞAHİN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2017 Vol.41 Issue 4, pp.367-376

Belge Tipi:

Makale

Yayın Tarihi:

7/2017

Belge Dili:

Türkçe

Document ID (Org No.):

2000759619

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101

Özet:

 

We present LIME (Line Measurements from ECHELLE Spectra),   an IDL-based code, as a powerful tool for semiautomated stellar line   measurement and identification. Interactively selected line positions (i.e.   wavelengths) are compared with a master line list of the user's selections.   Each unknown line that the user interactively chooses is displayed with   potential identifications provided by the code in the vicinity of the   selected line. The best identification is evaluated on the basis of several   criteria (e.g., atomic/molecular line information, wavelength displacement,   and theoretical equivalent width for solar atmospheric values). We examined   the identifications by LIME in the spectra of post-red supergiant star HD   179821 over a range of signal-to-noise values and wavelength ranges. We   found that the results obtained by LIME show virtually complete agreement   with the manual identifications for which the conventional and also tedious   approach is to use a revised multiplet table as an initial guide and perform   a systematic search that makes use of the lower excitation potential and   gf-values. Comparison to previous identifications for HD 179821 in the   literature revealed not only lines that were unmeasurable and/or blended but   also misidentifications. While a manual identification process takes a   relatively longer time to be accomplished by an experienced spectroscopist,   LIME can provide a rapid extraction of line information in a few hours with   moderate user interaction.

Makale detayları

LIME: Semiautomated line measurement and identification from stellar spectra

Yazarlar: Timur ŞAHİN

Yayıncı: TUBITAK

Dergi: Turkish Journal of Physics 2017 Vol.41 Issue 4, pp.367-376

Belge Tipi: Makale

Yayın Tarihi: 7/2017

Belge Dili: Türkçe

Document ID (Org No.): 2000759619

Sıklık: İki Aylık

eISSN: 1303-6122

pISSN: 1300-0101

Sayı

Yazarlar:

Timur ŞAHİN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2017 Vol.41 Issue 4, pp.367-376

Belge Tipi:

Makale

Yayın Tarihi:

7/2017

Belge Dili:

Türkçe

Document ID (Org No.):

2000759619

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101