Alert Notice 800: Photometry needed for five YSO stars in support of spectroscopy
Active Dates: Nov. 17, 2022 – Nov. 30, 2022
Abstract:
Ruhee Kahar (University of Dundee) and colleagues at several institutions have requested AAVSO observers' assistance in monitoring five YSO stars in support of high-resolution spectra data obtained with CARMENES in a study of accreting young stars. The targets are given in the table below.
Justification:
We are taking repeated high-resolution spectra of intermediate-mass young stars to study the velocities and temporal variability of accretion related lines in these objects. The sample of stars includes HAeBe stars and massive T Tauri stars that will evolve into A and B stars. The connection between both types is at present unclear and may be related to the magnetic activity of the future star. Previous observations of these objects also indicate some evidence of extinction by circumstellar material.
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| RY Tau | 9.30 | CTTS/ROT |
Cadence: Not Specified Precision: 100 |
Not Requested |
| UX Ori | 9.40 | UXOR |
Cadence: Not Specified Precision: 100 |
Not Requested |
| RR Tau | 10.20 | UXOR |
Cadence: Not Specified Precision: 100 |
Not Requested |
| CO Ori | 9.90 | UXOR |
Cadence: Not Specified Precision: 100 |
Not Requested |
| R Mon | 10.70 | UXOR |
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: Ruhee Kahar; Imported Campaign (Alert Notice #800)