dc.contributor.author | Joshi, Santosh | |
dc.contributor.author | Trust, Otto | |
dc.contributor.author | Williams, P. E. | |
dc.contributor.author | Semenko, E. | |
dc.contributor.author | Cat, P. De | |
dc.contributor.author | Jurua, E. | |
dc.contributor.author | Holdsworth, D. L. | |
dc.contributor.author | Garcıa, R. A. | |
dc.contributor.author | Abedigamba, O. P. | |
dc.date.accessioned | 2022-11-10T09:02:03Z | |
dc.date.available | 2022-11-10T09:02:03Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Joshi, S., Trust, O., Williams, E. P., Semenko, E., De Cat, P., Jurua, E., ... & Abedigamba, O. P. (2022). Study of Chemically Peculiar Stars-III: High-resolution Spectroscopy and K2 Photometry of New Variables in the Region of M44. Sub-Saharan Africa Astronomy Summer School (Galaxies, 6. | en_US |
dc.identifier.uri | http://ir.must.ac.ug/xmlui/handle/123456789/2632 | |
dc.description.abstract | We aim to carry out a study on the photometric and spectroscopic variabilities of four stars monitored in the Nainital- Cape survey. We analysed the photometric variability of the target stars, HD73135,BD+19° 2045, BD+19° 2046, and TYC 1395- 855-1, using ground-based differential photometric and K2 data. Spectrophotometric and high-resolution spectroscopic data are used to determine the fundamental parameters and chemical abundances. Although all the target are found to be non-variable based on ground-based differential photometry, the analysis of high-precision K2 photometric time-series reveals that HD73135,BD+19° 2045, and BD +19° 2046 are variable. We do not detect photometric variability in TYC 1395-855-1. Our analyses show that the three stars, HD73135, BD+19° 2045,BD+19° 2046, which are non-variable based on ground-based observations exhibit rotational variability in Kepler K2 data while TYC 1395-855-1 remains constant in both data sets. Based on the chemical abundance analysis, HD73135 is an Am star, while BD+19° 2045 is non-Am. | en_US |
dc.description.sponsorship | International Science Program | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | Sub-Saharan Africa Astronomy Summer School | en_US |
dc.title | Study of Chemically Peculiar Stars-III: High-resolution Spectroscopy and K2 Photometry of New Variables in the Region of M44 | en_US |
dc.type | Article | en_US |