possible type 1a SN in M101

[PTS]

========================================
>> According to AAVSO Special Notice #250 Matthew Templeton reports that
>> there is a possible Type-Ia Supernova in M101.
>>
>> P. Nugent et al. report in ATel #3581 that a possible Type-Ia
>> supernova has been discovered by the Palomar Transient Factory shortly
>> after eruption in the galaxy M101 and has been designated "PTF11kly".
>>
>> The object, when discovered on August 23/24, was at a magnitude of
>> g=17.2, but already by late August 24 was at 14.5V/v and it may reach
>> mag 10 or 11. The object is well placed within M101 for good
>> photometry, and observations of this potential bright SNIa are
>> strongly encouraged.
>>
>> The (J2000) coordinates reported for the object are
>>
>> RA: 14:03:05.81 , Dec: +54:16:25.4
>>
>> Charts using the name PTF11kly may be plotted with the AAVSO VSP at
>> http://www.aavso.org/vsp
>>
>> You should select the DSS option when plotting, as the galaxy will not
>> appear on standard charts.
>>
>> Roger Pickard, VSS Director
>> roger.pickard@...
>>
>> 2011 August 25

[鄧登凳]

M101很難在這個季節在香港觀察啊 ^=^|

[Steve]

http://apod.nasa.gov/apod/astropix.html

[PTS]

http://apod.nasa.gov/apod/astropix.html

Compare this image with the finder charts above:

pts

[PTS]

Here are some spectroscopic results from France:

http://astrosurf.com/aras/surveys/super ... e/obs.html

pts