S. K. Pandey

Properties of dust in early-type galaxies

We report optical extinction properties of dust for a sample of 26 early-type galaxies based on the analysis of their multicolour CCD observations. The wavelength dependence of dust extinction for these galaxies is determined and the extinction curves are found to run parallel to the Galactic extinction curve, which implies that the properties of dust in the extragalactic environment are quite similar to those of the Milky Way. For the sample galaxies, value of the parameter

Granulation and supergranulation as convective modes in the solar envelope

R_V

Study of dust and ionized gas in early-type galaxies

, the ratio of total extinction in

Properties of unique hard X-ray dips observed from GRS 1915+105 and IGR J17091–3624 and their implications

V

Evidence of two unique variability classes from IGR J17091–3624

band to selective extinction in

Interpreting the large amplitude X-ray variation of GRS 1915+105 and IGR J17091−3624 as modulations of an accretion disc

B

Dust extinction and X-ray emission from the starburst galaxy NGC 1482

&

ISOPHOTAL SHAPES OF EARLY-TYPE GALAXIES TO VERY FAINT LEVELS

V

Instabilities in a penetrative atmosphere

bands, lies in the range 2.03 - 3.46 with an average of 3.02, compared to its canonical value of 3.1 for the Milky Way. A dependence of

BVR photometry of a newly identified RS CVn binary star HD 61396

R_V