Multiwavelength campaign on delta Ori (Mintaka)
Abstract:
An international team of astronomers, including Drs. Tony Moffat, Michael Corcoran, and Noel Richardson, has requested AAVSO photometry and spectroscopy of delta Ori (Mintaka) in support of their multiwavelength campaign on this hot binary star in Orion's Belt. Satellite observations will include x-ray via NASA's Chandra and precision optical photometry via Canada's MOST.
Justification:
Massive O‐type stars, though rare, are a primary driver behind the chemical, ionization and pressure evolution of the interstellar medium. Evolution of these stars from main sequence to supernova is driven significantly by stellar‐wind mass loss. Understanding this important connection in individual stars requires a good understanding of the physical stellar parameters combined with detailed understanding of the outflowing wind. Because massive stars are rare, and massive binaries rarer still, dynamical determinations of stellar parameters are only known for a few systems. Our uncertainties regarding mass loss are even worse. Important questions have not yet been answered.
Requested Data Types:
Photometry, Spectroscopy
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| R Ori | 9.05 | M |
Cadence: Not Specified Precision: 100 |
Cadence: Not Specified Resolution: 250 Desired SNR: 100 |
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: Tony Moffat; Imported Campaign (Alert Notice #474)