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Alka Mishra, Nimisha G. Kantharia & Mousumi Das

Giant Low Surface Brightness Galaxies

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Mots-clés : astrophysique, astronomie, radio, extragalactique, galaxies

Abstract

In this paper, we present radio observations of the giant low surface brightness (LSB) galaxies made using the Giant Metrewave Radio Telescope (GMRT). LSB galaxies are generally large, dark matter dominated spirals that have low star formation efficiencies and large HI gas disks. Their properties suggest that they are less evolved compared to high surface brightness galaxies. We present GMRT emission maps of LSB galaxies with an optically-identified active nucleus. Using our radio data and archival near-infrared (2MASS) and near-ultraviolet (GALEX) data, we studied morphology and star formation efficiencies in these galaxies. All the galaxies show radio continuum emission mostly associated with the centre of the galaxy.

Keywords : astronomy, astrophysics, radio, extragalactic, galaxies

Pour citer cet article

Alka Mishra, Nimisha G. Kantharia & Mousumi Das, «Giant Low Surface Brightness Galaxies», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 87 - Année 2018, Actes de colloques, First Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - November 2016 - Nainital, India, 365 - 370 URL : https://popups.uliege.be:443/0037-9565/index.php?id=7787.

A propos de : Alka Mishra

Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263 002, India, alkam7@gmail.com

A propos de : Nimisha G. Kantharia

National Centre for Radio Astrophysics, TIFR, Pune 411 007, India

A propos de : Mousumi Das

Indian Institute of Astrophysics, Koramangala, Bangalore 560 034, India