| Name: | Vijayakumar H Doddamani |
| Affiliation: | Bangalore University |
| Conference ID: | ASI2025_287 |
| Title: | Slitless Spectroscopy of Nearby Milky Way Satellites Using Himalayan Chandra Telescope |
| Authors: | Vijayakumar H Doddamani1, Devika K Divakar2, Sivarani Thirupathi2, Susmitha Antony2, Arun Surya2, Athira Unni2, Manjunath Bestha2, Vedavathi P3 |
| Authors Affiliation: | 1, Department of Physics, Bangalore University, Bengaluru-560056
2, Indian Institute of Astrophysics, Koramangala, Bengaluru-560034
3, CMR Institute of Technology, Bengaluru |
| Mode of Presentation: | Poster |
| Abstract Category: | Galaxies and Cosmology |
| Abstract: | Multi-object spectroscopy is crucial for efficient satellite observations, optimizing telescope time usage. Telescopes lacking multi-slit or multi-fiber capabilities can employ slitless spectroscopy to cover wide fields of satellite galaxies. Slitless spectroscopy eliminates the need for traditional slitmasks and enables comprehensive spectroscopic examinations of all the sources within a field without significant pre-planning. Our study conducted slitless observations of nine nearby Milky Way satellite galaxies utilizing the 2-meter Himalayan Chandra Telescope - Hanle Faint Object Spectrograph and Camera (HCT-HFOSC). We experimented with various filter and grism combinations to mitigate one of the main drawbacks of slitless spectroscopy: the spectral overlap. We present a semi-automated Python routine to reduce the slitless data. Furthermore, we discuss the challenges and constraints of slitless spectroscopy using the 2-m class telescope of different observational configurations used in our study. |
