Towards an Adequate Method to Isolate Spectroscopic Families of Diffuse Interstell Bands

Abstract

We divide some of the observed diffuse interstellar bands (DIBs) into families which appear to have spectral structures of single species. Three different methods are applied to separate such families, exploring the best approach for future investigations of this type. Starting with statistical treatment of the data, we found that statistical methods by themselves give insufficient results. Two other methods of data analysis ("Averaging EWs" and "Investigating the figures with arranged spectrograms") were found to be more useful as tools for finding the spectroscopic families of DIBs. On the basis of these methods, we suggest some candidates as "relatives" of 5780 and 5797 bands.

11 pages 3 figures 7 tables

Cited by in corpus (9)

• Exploring the diffuse interstellar bands with the Sloan Digital Sky Survey
• A Tale of Two Mysteries in Interstellar Astrophysics: The 2175 Angstrom Extinction Bump and Diffuse Interstellar Bands
• Detections of Diffuse Interstellar Bands in the SDSS Low-resolution Spectra
• Detection of Diffuse Interstellar Bands in the z=0.5 Damped Lyman alpha system towards AO 0235+164
• Diffuse Interstellar Bands and the Ultraviolet Extinction Curves: The Missing Link Revisited
• Limits on Reddening and Gas-to-Dust Ratios for Seven Intermediate Redshift Damped Ly-alpha Absorbers from Diffuse Interstellar Bands
• Using machine learning to classify the diffuse interstellar bands
• C${}_{60}^{+}$ diffuse interstellar band correlations and environmental variations
• Families and Clusters of Diffuse Interstellar Bands: a Data-Driven Correlation Analysis