Is this project an undergraduate, graduate, or faculty project?
Undergraduate
individual
What campus are you from?
Daytona Beach
Authors' Class Standing
Senior
Lead Presenter's Name
Divyeshwari P Vansadia
Faculty Mentor Name
Dr. Stephen D. Gillam
Abstract
The goals of this investigation are to determine the principal pulsation and get an understanding of the atmospheric fluctuation of TYC 3218-888-2, a rapidly oscillating chemically peculiar A-type star (roAP star). The Southeastern Association for Research in Astronomy (SARA-RM) telescope was used to carefully collect time-series photometry. Our investigation's basic premise holds that by analyzing the frequency spectrum of the star's light curve, we may interpret crucial information about the star's upper atmosphere and photosphere.
We analyzed the star's pulsation through the use of multi-aperture photometry (AstroImage J) and Fourier Analysis techniques (Period 04). The determined principal pulsation of TYC 3218-888-2, is 0.8743 mHz, with an amplitude of 4.58 mmag. We also found a pulsation with a large amplitude of 9.194 mmag and frequency of 0.0529mHz that lies between the gamma Doradus and Delat scuti frequency ranges. This was the preliminary detection, so we need more observations to confirm this pulsation. Additionally, we unintentionally discovered that one of the comparison stars was a variable star while interpreting all the light curves of the comparison stars.
This presents progress on the way to determining the main pulsation and other frequencies of this roAp stars.
Keywords - roAp Stars, Pulsations, Fourier Analysis, Multi-aperture Photometry, Atmospheric Structure, light curves
Did this research project receive funding support from the Office of Undergraduate Research.
No
Using Fourier Analysis to Reveal Pulsation Frequencies of roAp Stars
The goals of this investigation are to determine the principal pulsation and get an understanding of the atmospheric fluctuation of TYC 3218-888-2, a rapidly oscillating chemically peculiar A-type star (roAP star). The Southeastern Association for Research in Astronomy (SARA-RM) telescope was used to carefully collect time-series photometry. Our investigation's basic premise holds that by analyzing the frequency spectrum of the star's light curve, we may interpret crucial information about the star's upper atmosphere and photosphere.
We analyzed the star's pulsation through the use of multi-aperture photometry (AstroImage J) and Fourier Analysis techniques (Period 04). The determined principal pulsation of TYC 3218-888-2, is 0.8743 mHz, with an amplitude of 4.58 mmag. We also found a pulsation with a large amplitude of 9.194 mmag and frequency of 0.0529mHz that lies between the gamma Doradus and Delat scuti frequency ranges. This was the preliminary detection, so we need more observations to confirm this pulsation. Additionally, we unintentionally discovered that one of the comparison stars was a variable star while interpreting all the light curves of the comparison stars.
This presents progress on the way to determining the main pulsation and other frequencies of this roAp stars.
Keywords - roAp Stars, Pulsations, Fourier Analysis, Multi-aperture Photometry, Atmospheric Structure, light curves