1 / 10

Analysis of HD 176582: Variability and Magnetosphere of Massive Magnetic B-type Stars

This study explores the massive magnetic star HD 176582 using observations from the Peter van de Kamp Observatory at Swarthmore College. Utilizing a 0.6m RCOS Ritchey-Chretien telescope, we analyze light curves and spectral data to characterize the star's magnetosphere. Observations reveal a periodicity of 1.58 days, with variability noted around 30-40 mmags, attributed to the interaction of magnetic fields and stellar winds. This research contributes to our understanding of B-type stars and their unique magnetic properties.

quana
Télécharger la présentation

Analysis of HD 176582: Variability and Magnetosphere of Massive Magnetic B-type Stars

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. HD 176582 Tzitlaly Barajas Swarthmore College Keck North East Consortium

  2. the observatory Peter van de Kamp Observatory at Swarthmore college Location: 39° 54′08″N 75° 21′04″W Average humidity: 70% Average seeing: 3” - 5”

  3. the telescope RCOS 0.6m Ritchey-Chretien Telescope 4k Apogee Alta CCD Fov: 0.45 deg Limit:mag

  4. observing Control telescope from adjacent room Use Maxim dl to take images. The Sky software to control telescope.

  5. lightcurves Reduce data using IRAF: Subtract Bias Divide by Skyflats Use as many comparison as possible Subtract magnitudes of comparison stars from target

  6. massive magnetic stars B type Stars: Classified by presence of H, HeI in spectra Mass: 3 - 20 Msol Luminosity: 100 - 50k Lsol Temperature: 10k - 30k K

  7. massive magnetic stars Bp type stars: Peculiar: unusual metal abundances on surface Harbor global rigidly rotating magnetic fields Stellar wind channeled and contained by magnetic field lines

  8. massive magnetic stars Variability in lightcurve caused by magnetosphere blocking light from stars How much light is blocked is determined by: Inclination Obliquity Rotational speed Optical thickness

  9. HD 176582 • Spectrum indicative of magnetosphere • Period of 1.58 days determined from magnetic field data • Hipparcos data shows variability on the order of ~ 30-40 mmags

  10. HD 176582 Results: Period: Variability across filters: Characterization of magnetosphere:

More Related