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Time Resolved Photometric and Spectroscopic Analysis of Chemically Peculiar Stars

Published online by Cambridge University Press:  23 January 2015

Santosh Joshi ,
Gireesh C. Joshi ,
Y. C. Joshi  and
Rahul Aggrawal
Santosh Joshi
Affiliation:
Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital -263129, India email: [email protected]
Gireesh C. Joshi
Affiliation:
Center of Advanced Study, Department of Physics, D. S. B. Campus, Kumaun University, Nainital-263002, India
Y. C. Joshi
Affiliation:
Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital -263129, India email: [email protected]
Rahul Aggrawal
Affiliation:
Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital -263129, India email: [email protected]
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Abstract

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Here we present the report on the “Nainital–Cape survey” research project aiming to search for and study the pulsational variability of main-sequence chemically peculiar (CP) stars. For this study, the time-series photometric observations of the sample stars were carried out at the 1.04 m ARIES telescope (India), while the high-resolution spectroscopic and spectro-polarimetric observations were carried out at the the 6.0 m Russian telescope. Under this project, we have recently found clear evidence of photometric variability in the Am star HD 73045, which is likely to be pulsating in nature with a period of about 36 min, hence adding a new member to the family of the δ Scuti pulsating variables that have peculiar abundances.

Keywords

stars: chemically peculiarvariables : δ Scutitechniques : photometricspectroscopicpolarimetric
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry , June 2014 , pp. 218 - 219
Copyright
Copyright © International Astronomical Union 2015 

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