Excitation temperature of C₂ and broadening of the 6196 Å diffuse interstellar band

2009/03/25 by M. Kazmierczak, M. Kaźmierczak, P. Gnaciński +6 · 2 citations
Physics and Astronomy · #Absorption (acoustics) #Absorption band #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Equivalent width #Excitation #Excitation temperature #Interstellar medium #Resolution (logic) #Spectral line #Superconducting and THz Device Technology #astro-ph.GA

paper · pdf · doi:10.1051/0004-6361/200811558

published as Astronomy and Astrophysics, 2009, Volume 498, Issue 3, 2009, pp.785-791 · 7 pages, 8 figures, A&A 2009

openalex publication_date 2009/03/25 · arxiv created 2010/09/27 · arxiv updated 2010/09/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

This paper presents a finding of the correlation between the width of a strong diffuse interstellar band at 6196 Å and the excitation temperature of <i>C<i/><sub>2<sub/> based on high resolution and high signal-to-noise ratio spectra. The excitation temperature was determined from absorption lines of the Phillips and Mulliken systems. The width and shape of the narrow 6196 Å DIB profile apparently depend on the <i>C<i/><sub>2<sub/> temperature, being broader for higher values.

Citations

• Observations of Rotationally Resolved C3in Translucent Sight Lines
• The Rotational Excitation Temperature of the λ6614 Diffuse Interstellar Band Carrier

Cited by

• Centrosymmetric molecules as possible carriers of diffuse interstellar bands★
• Abundances and rotational temperatures of the C2interstellar molecule towards six reddened early-type stars