Browsing IIAP Publications by Subject "G Stars"

Now showing items 1-4 of 4

The dependence of He I 10830 absorption on X-ray luminosity in RS CVn binaries and very active F and G main-sequence stars

Mekkaden, M. V (Kluwer Academic Publishers, 1985-03)

A study of the relationship between soft X-ray luminosity and He I 10830 equivalent width in RS CVn binaries and very active late-type main-sequence stars is made. Long-period RS CVns and very active F and G main-sequence ...
Equivalent width of OI λ7774 and absolute magnitude relation for F and G supergiants

Kameswara Rao, N; Mallik, S. G. V (Royal Astronomical Society, 1978-04)

Luminosity calibration is established for F5-G2 supergiants using the equivalent width measures of OI λ7774 and FeI λ7748
Possible proto-planetary nebulae

Parthasarathy, M (Cambridge University Press, 1989)

IRAS data for high-galactic-latitude F supergiants, a few luminous F-G stars, and a few peculiar (forbidden) emission-line stars reveal they have dust shells with characteristics similar to those observed in planetary ...
A study of the H-alpha line in late G and K supergiants

Mallik, S. G. V (Indian Academy of Sciences, 1982-03)

H-alpha is investigated spectroscopically in order to gain information on the properties of expanding chromospheres of late G and K supergiants. Spectra of 23 stars brighter than V equals 6.0 are obtained at dispersions ...

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