Alert Notice 180: 2337+56 Nova Cassiopeiae 1993 [V705 Cas] AND Special request to monitor dwarf novae
Abstract:
This bright nova, discovered on December 7.47 UT by Syuichi Nakano of Japan at photographic magnitude 6.5, has been very well monitored by observers worldwide. Its optical light curve indicates it brightened to about visual magnitude 5.7 by mid-December, and then has slowly declined to magnitude 8.4 by February 7, with fluctuations as much as 1 magnitude in amplitude. In addition to the optical observations, multiwavelength monitoring has been done using satellites. UV rise by a factor of three occurred on Dec. 22, and the integrated UV flux of the nova remained nearly constant through Jan. 12.
Justification:
The optical light curve of N Cas 93 is similar to the light curve of DQ Herculis, which showed a dramatic decline in brightness followed by recovery. Nova Cas 93 may behave similarly, with an expected dramatic decline in brightness in late March.
Requested Data Types:
Spectroscopy, Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| R Hyi | 14.43 | DCEP |
Cadence: Not Specified Precision: 100 |
Cadence: Not Specified Resolution: 250 Desired SNR: 100 |
| Kepler-1247 | 15.93 | EP+ROT |
Cadence: Not Specified Precision: 100 |
Cadence: Not Specified Resolution: 250 Desired SNR: 100 |
Spectroscopy Lines:
No spectroscopy lines provided
Photometry Filters:
B (Johnson)
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: S. N. Shore, S. Starrfield, P. H. Hauschildt, G. Sonneborn, R. Gonzalez-Riestra; Imported Campaign (Alert Notice #180)