Observations of V420 Aur (HD 34921) needed to support spectroscopy
Active Dates: Oct. 3, 2016 – Oct. 24, 2016
Abstract:
Marcella Wijngaarden and Kelly Gourdji have requested AAVSO observers' assistance in providing optical photometry in support of their high-resolution spectroscopy with the Mercator telescope + Hermes spectrograph in La Palma 2016 October 7 through 17.
Justification:
V420 Aur (HD 34921) is the optical Be star that is part of a peculiar High Mass X-ray Binary that exhibits highly complex and variable spectra. It is difficult to construct a physical model of this HMXB system. Though based on these observations, the system is thought to contain a B[e] star with a dense plasma region, an accretion disk around a neutron star, a shell and circumstellar regions of cold dust. New observations will contribute to a better understanding of this system.
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| R Aur | 6.70 | M |
Cadence: Not Specified Precision: 100 |
Not Requested |
Spectroscopy Lines:
No spectroscopy lines provided
Photometry Filters:
No photometry filters provided
Comparison Stars:
No comparison stars provided
Co-Authorship
Observers are not eligible for co-authorship.
Additional Observer Input:
Not provided
Additional Submission Location:
Not provided
Forum URL
N/A
Notes:
Principal Investigator: Marcella Wijngaarden and Kelly Gourdji; Imported Campaign (Alert Notice #554)