Supernova in Antennae

[PeterM]

There has been a Supernova discovered in NGC4038, one of the "Antennae" galaxies in Corvus. Don't yet know who discovered it but this is the 5th Supernova in this galaxy pair. Stu Parker measures around mag 15.5 tonight.
This is a great imaging opportunity and may even become bright enough for visual observations as 2 previous supernova reached mag 11.8 & 12.8 and the other 2 in the mid mag14s
Some details below.


PSN J12015272-1852183, CBAT TOCP discovered 2013/06/22.120 by unknown
Found in NGC 4038 at R.A. = 12h01m52s.72, Decl. = -18°52'18".3
Located 0" east and 0" north of the center of NGC 4038
Mag 15.8:6/22, Type unknown (References: SN 2007sr 2004gt 1974E 1921A)

[astroron]

One very busy galaxy pair.
Thanks Peter, something new to look forward to in the comings weeks if it gets bright enough for my scope :D
Will check on it now on Bright Supernova page.
Cheers:thumbsup:

[PeterM]

Apparently this is a type 1c Supernova about a week before maximum light, so this should become a visual SN for larger telescopes and those able to take spectra.
Just heard that professional astronomers have much HST data available and no doubt will be looking for the progenitor. Early images of this may be very useful to them.
So IIS member images may be very useful and we can pass them on, with due credit of course.

[Greg Bock]

HI All,
finder chart here if you want to chase it down.

[Merlin66]

Greg,
Thanks for that!
Hopefully there will be some amateur spectra available....soon...

[Terry B]

:rain::rain::rain::rain::rain:

[pvelez]

Rainrainrainrainrainrain.

Damn!

hopefully soon - maybe at the weekend. I needed a new target. I don't have access to TSX at work - when does it rise/transit the meridian?

Pete

[mithrandir]

I'm not that far from you Pete, so setting the time to about transit - from CdC:

Visibility for your observatory:
Castle Hill 2013-06-25 17h43m39s ( EST )
Universal Time: 2013-06-25T07:43:39 JD=2456468.82198
Local sidereal time:12h02m05s
Hour angle: 23h59m 28s
Azimuth:+00°29'29.3"
Altitude:+75°13'14.8"
Rise: 10h49m Azimuth+113°23'
Culmination: 17h44m +75°13'
Set: 0h43m Azimuth+246°37'

The rain might stop one of these days.

[pvelez]

Thanks Andrew

so early evening is the best time to get to work on this - thats good with the moon waning

Now for the rain to stop!

Pete

[ChrisM]

Thanks for the heads-up Peter & Greg.
I'll definitely have a look when it clears up here.

Just for comparison purposes, I've attached a single short exposure taken on 7th May.


Chris

[Greg Bock]

HI all,
here's an 18 minute image taken last night, 25 June, moon in the sky.
Meade 14" R at F7 with ST10XE, binned 2x2. (36 x 30 secs)
It is brightening quite quickly.

[bojan]

I tried tonight and I believe I've got it..
LP in Melbourne is terrible, however the seeing tonight was pretty good...

Rubinar 10/1000, Canon 60D, 32x30sec, ISO6400

[astroron]

Looks like it,well done. :)
Cheers:thumbsup:

[Greg Bock]

yep, thumbs up Bojan.

[ChrisM]

And here's another one -captured earlier this evening from Gippsland.

This is only the second SN that I've seen. The last one (1365 SNfr) was blue; this one appears to be white.

10 x 60 secs
D7100
14" SCT
ISO 1000
PixInsight

Chris

[malclocke]

Now known as SN 2013dk, classified as type Ic

[PeterM]

This is interesting, re the Sn in NGC5806 and using the HST data to identify the Sn progenitor. This is what the pros will be now trying to do with SN2013dk in NGC4038.
https://dl.dropboxusercontent.com/u/1690364/13bvn_progenitor.jpg

[Weltevreden SA]

PSN J12015272-1852183 is also getting attention in the CosmoQuest forum

http://cosmoquest.org/forum/showthread.php?144938-PSN-J12015272-1852183-A-Type-Ic-SN-in-The-Antennae!

This SN has been identified with a Wolf-Reyet progenitor, a key to understanding the detonation mechanism. The initial ejecta was moving outward at 10% of the speed of light, which is impressive energy considering the amount of matter involved, some 30% to 40% of the mass of the Sun.

=Dana in SA

[bojan]

It's getting brighter..
Rubinar 10/1000, Canon 60D, 54x30sec, ISO6400

[bojan]

It seems it is (already) fading?

The left frame is taken on July 3rd, the right one is from tonight, July 9th.