1. Home

Type Ia supernova

Alert Notice 503: Request for regular monitoring of the symbiotic variable RT Cru

Notes:  Please continue to monitor RT Cru as it continues to decline slowly from its outburst that began in 2021 and after it returns to minimum.  -  Elizabeth O. Waagen, April 4, 2023; July 2, 2024

This campaign has been extended indefinitely. Dr. Karovska requests monitoring of RT Cru until further notice.  -  Elizabeth O. Waagen, 17 April 2020

Tags
AAVSO Alert Notice
RT Cru
front page news
symbiotic variable
Type Ia supernova
Chandra
AAVSO International Database
X-ray source

Alert Notice 385: SN 2008fw in NGC 3261

September 29, 2008 : As announced in CBET 1521 (Monard and Morrell; Daniel W.E. Green, editor), 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.
Tags
AAVSO Alert Notice
SN 2008fw
NGC 3261
Type Ia supernova
AAVSO International Database

Alert Notice 487: Supernova 2013dy in NGC 7250 = PSN J22181760+4034096

July 19, 2013

Event: Supernova 2013dy in NGC 7250 (Lacerta) = PSN J22181760+4034096

Independent discovery by:
 - Lick Observatory Supernova Search (LOSS), reported by C. Casper, W. Zheng, W. Li, and A. V. Filippenko (University of California at Berkeley) and S. B. Cenko (Goddard Space Flight Center)
 - Kuniaki Goto (Miyoshi-shi, Hiroshima Prefecture, Japan), communicated by Shoichi Itoh (National Astronomical Observatory of Japan)

Discovery magnitude:

Tags
Type Ia supernova
SN 2013dy
PSN J22181760+4034096
front page news
AAVSO International Database
AAVSO Alert Notice
Subscribe to Type Ia supernova