Astrosat Science

05/08/2019

Our Picture of the Month is of the nearby open star cluster M67. The astronomers used their ultraviolet data from AstroSat to determine that a well known Blue Straggler Star in the cluster has a low mass White Dwarf companion. Why is this rather special? Read more to find out about the work of Annapurni Subramaniam and collaborators.

http://astron-soc.in/outreach/apom/


Indian Institute of Astrophysics
Vellore Institute of Technology, Vellore
Tata Institute of Fundamental Research

With Niruj Astropage Sarita Vig Girish Phy

Image of the MonthThe AstroSat Picture of the Month for July 2019 is the Far UltraViolet image of the open cluster M67, showing its hotter younger stars. The BSS-White Dwarf pais, WOCS1007, is circ…

04/07/2019

Our Picture of the Month for June is the ultraviolet image of the dwarf galaxy IC2574. Some of the stars being formed are at the outskirts of gas shells that have been expanding for quite some time now!

The image is from the work of Chayan Mondal, Annapurni Subramaniam and Koshy George

See http://astron-soc.in/outreach/apom/ for more ...
With Sarita Vig Niruj Astropage Girish Phy for

ISRO - Indian Space Research Organisation
Indian Institute of Astrophysics

Image of the MonthThe AstroSat Picture of the Month for June 2019 is the far-ultraviolet image of the Dwarf Galaxy IC2574, using ASTROSAT. The far-ultraviolet traces young massive stars in the gala…

05/06/2019

ASTROSAT PICTURE OF THE MONTH

for May 2019 peers into the heart of the Jellyfish Galaxy JO201. The image shows stars forming in a large ring around the centre. Why are no stars forming inside the ring? The authors argue that this is because of the influence of the massive black hole residing in the centre!

Read our at http://astron-soc.in/outreach/apom/ to know more! This work was done by Koshy George, Annapurni Subramaniam and others.

ISRO - Indian Space Research Organisation
Indian Institute of Astrophysics

Sarita Vig Niruj Astropage Girish Phy

05/06/2019

Why does the jellyfish galaxy JO201 form stars in a large ring around its centre? Does the massive black hole lurking in the centre influence whether stars form near it?

https://vigyanprasar.gov.in/isw/AstroSat-peers-into-the-heart-of-Jellyfish-galaxy.html

Read the latest story accompanying the Picture of the Month to find out more about this work done by Koshy George, Annapurni Subramaniam and others. Full paper athttps://arxiv.org/pdf/1905.08973.pdf

Written by Sarita Vig

04/04/2019

Coverage in the Malayalam and Gujarati media of our story of last month's Picture of the Month.

This featured the UVIT study of the globular cluster NGC 2808 by Rashi Jain, Sarita Vig, Vig and Swarna Ghosh from IIST and TIFR.

http://astron-soc.in/outreach/2019/03/astrosat-picture-of-the-month-017/ …

02/04/2019

Our next Picture of the Momth, , is now online too! See http://astron-soc.in/outreach/apom/

Read how a star relives its youth while dancing with its wizened companion in the Globular Cluster NGC 5466. The artists illustration of the history of the star system NH 84 is a panting done by the lead author of the paper, Snehalata Sahu!

This is based on the paper by Snehalata Sahu, Annapurni Subramaniam and K. Rao of Indian Institute of Astrophysics and others from USA, Canada, Chile, using the AstroSat that is operated by ISRO - Indian Space Research Organisation.

Text thanks to Niruj Astropage, Sarita Vig, Girish Phy

Image of the MonthThe AstroSat Picture of the Month for March 2019 is the Globular Cluster NGC 5466 and one of its stars NH 84. On the top left is the ultraviolet image of cluster, with its Blue St…

02/04/2019

Astronomers use the of and unveil a star that 'stole its youth' from its companion!

Read the story accompanying the latest at http://vigyanprasar.gov.in/isw/AstroSat-unveils-star-that-regained-its-youth-by-feeding-on-its-companion.html

The painting of the history of the star system NH 84 was done by the lead author Snehalata Sahu of Indian Institute of Astrophysics

Authors include Annapurni Subramaniam, Kameswara Rao Neelamraju, Nathan Leigh, .b.stetson and others.

Story by Niruj Astropage with Sarita Vig & Girish Phy.
Thanks to India Science Wire

ISRO - Indian Space Research Organisation

Every culture has stories of vampires and magical creatures that regain their youth by drinking the blood - By Niruj Mohan Ramanujam

02/04/2019

A heads-up to all ... the APOm for March, though delayed, will be up in very soon, today.

This time, apart from the image itself, the APOM also includes a beautiful painting of the object discovered, by the lead author of the paper!

07/03/2019

The Picture of the Month for Feb 2019, though a bit late, is now online at http://astron-soc.in/outreach/apom/

"New population of Ultraviolet stars in the Globular Cluster NGC 2808", is taken from the work of Rashi Jain and Sarita Vig of IIST and Prof Ghosh of TIFR.

ISRO
Indian Institute of Astrophysics
Vigyan Prasar

Image of the MonthThe AstroSat Picture of the Month for February 2019 is an Ultraviolet image of the globular cluster NGC 2808, with far-ultraviolet shown in blue and near-ultraviolet in yellow. St…

07/03/2019

The press story explaining the latest Picture of the Month .

Read more to learn about a new population of hot -bright stars seen in the Globular Cluster NGC 2808. This results comes from Rashi Jain and Sarita Vig of the Indian Institute of Space Science & Technology, Thiruvananthapuram and Prof Swarna Ghosh of TIFR Mumbai.

Article by Niruj Astropage. Thanks, India Science Wire for publishing it!

English: http://vigyanprasar.gov.in/isw/AstroSat-discovers-new-group-of-stars-in-globular-cluster-NGC-2808.html

Hindi: http://vigyanprasar.gov.in/isw/AstroSat-discovers-new-group-of-stars-in-globular-cluster-NGC-2808-hindi.html

ISRO - Indian Space Research Organisation
Indian Institute of Astrophysics
Vigyan Prasar

With Girish Phy

The Indian multi-wavelength space observatory AstroSat launched in September 2015 continues -- By Dr Niruj Mohan Ramanujam

30/01/2019

ASTROSAT PICTURE OF THE MONTH

This month, we show you how travels around the Earth as it functions as our high energy eye in the sky. Take a look!

http://astron-soc.in/outreach/apom/


ISRO - Indian Space Research Organisation
Indian Institute of Astrophysics भारतीय ताराभौतिकी संस्थान
Iucaa Scipop
Tata Institute of Fundamental Research
Raman Research Institute

With Niruj Astropage, Sarita Vig and Girish Phy

Image of the MonthThe AstroSat Picture of the Month for January 2019 shows the 97 minute long orbit of AstroSat around the Earth. This orbit is roughly equatorial (top right), inclined at around 6 …