SN 2008fw in NGC 3261
Abstract:
SN 2008fw, a supernova of type Ia, has been discovered in the spiral galaxy NGC 3261 by L.A.G. "Berto" Monard of South Africa. The most recent observation placed the supernova at an unfiltered magnitude of 14.2 on 2008 September 26.123 (JD 2454735.623). It has been within 0.1 magnitude of that measure since its discovery, and it is believed to be no more than one week past maximum. N. Morrell reports that spectroscopy taken with the Las Campanas du Pont 2.5-meter telescope for the Carnegie Supernova Project has confirmed that SN 2008fw is a supernova of type-Ia. CBET 1521 lists the following unfiltered CCD observations: 2008 July 28.687 (JD 2454676.187), m(CV) < 18.0; 2008 Sept 19.130 (JD 2454728.630), m(CV) = 14.3; 2008 Sept 20.128 (JD 2454729.628), m(CV) = 14.2; 2008 Sept 22.125 (JD 2454731.625), m(CV) = 14.1; 2008 Sept 23.118 (JD 2454732.618), m(CV) = 14.2; 2008 Sept 24.118 (JD 2454733.618), m(CV) = 14.2; 2008 Sept 26.123 (JD 2454735.623) m(CV) = 14.2. CBET 1521 also gives the following filtered magnitudes: 2008 Sept 22.125 (JD 2454731.625), m(V) = 14.0, (B-V) ~ -0.2. NGC 3261 is a face-on barred spiral. The supernova lies 52 arcseconds west and 30 arcseconds south of the nucleus, and is between spiral arms. A comparison star sequence is not yet available, but finder charts may be plotted using VSP: http://www.aavso.org/vsp
Justification:
N/A
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| SN 2008fw | 14.30 | SN Ia |
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: L.A.G. Monard; Imported Campaign (Alert Notice #385)