SIMBAD references

1997A&AS..123..135G - Astron. Astrophys., Suppl. Ser., 123, 135-146 (1997/May-2)

Spectral classifications in the near infrared of stars with composite spectra. II. Study of a sample of 180 stars.


Abstract (from CDS):

A sample of 180 supposedly composite-spectrum stars has been studied on the basis of spectra obtained in the near infrared (8370-8780Å) at a dispersion of 33Å/mm. The objective was to study the cooler components of the systems. Of our sample, 120 are true composite spectra, 35 are hot spectra of types B, F and 25 are Am stars. We find a strong concentration of the cooler components of the composite spectra around G8III. In view of the difficulty of classifying composite spectra, because of the superposition of an early type dwarf and a late type giant or supergiant spectrum, we have made several tests to control the classification based upon the infrared region. Since all tests gave positive results, we conclude that our classifications can be considered as being both reliable and homogeneous.

Abstract Copyright:

Journal keyword(s): stars: classification - infrared: stars - binaries: spectroscopic

VizieR on-line data: <Available at CDS (J/A+AS/123/135): table1 table2>

Simbad objects: 192

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:1997A&AS..123..135G and select 'bookmark this link' or equivalent in the popup menu


© Université de Strasbourg/CNRS

    • Contact