Niruj Mohan Ramanujam

AstroSat unveils star that regained its youth by feeding on its companion

Science & Technology

AstroSat unveils star that regained its youth by feeding on its companion

Niruj Mohan Ramanujam

02 Apr 2019

3 min read

UV image of NGC- 2808 with far-ultraviolet emission shown in blue and near-ultraviolet emission in yellow. [This image is featured as the AstroSat Picture of the Month]

Science & Technology

AstroSat discovers new group of stars in globular cluster NGC 2808

Niruj Mohan Ramanujam

07 Mar 2019

3 min read

The picture of NGC 288 in the optical (left side; credit: ESO/DSS) shows numerous sun-like cooler stars and it is hard to locate hot stars. The image of the same cluster in the ultraviolet (right side, taken by UVIT, yellow is the near-UV and white is the far-UV image; credit: Snehalata Sahu) shows only hot stars as the cooler stars become undetectable.

Science & Technology

This is how hot stars evolve in Globular Clusters in the Milky Way

Niruj Mohan Ramanujam

29 Nov 2018

4 min read

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