Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-24T02:57:07.553Z Has data issue: false hasContentIssue false
  • English
  • Français

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]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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 

References

Fossati, L., Bagnulo, S., Landstreet, J., et al. 2008, A&A 483, 891Google Scholar
Fossati, L., Bagnulo, S., Monier, R., et al. 2007, A&A 476, 911Google Scholar
Girish, V., Seetha, S., Martinez, P., et al. 2001, A&A 380, 142Google Scholar
Joshi, S., Girish, V., Sagar, R., et al. 2003, MNRAS 344, 431Google Scholar
Joshi, S., Mary, D. L., Chakradhari, N. K., Tiwari, S. K., & Billaud, C. 2009, A&A 507, 1763Google Scholar
Joshi, S., Mary, D. L., Martinez, P., et al. 2006, A&A 455, 303Google Scholar
Joshi, S., Ryabchikova, T., Kochukhov, O., et al. 2010, MNRAS 401, 1299Google Scholar
Joshi, S., Semenko, E., Martinez, P., et al. 2012, MNRAS 424, 2002CrossRefGoogle Scholar
Martinez, P., Kurtz, D. W., Ashoka, B. N., et al. 2001, A&A 371, 1048Google Scholar