BOSS PSN50 in PGC18880

[Martin Pugh]

Hi folks - excuse the cross-post from Deep Space.
As most of you probably know, Peter Marples has discovered a PSN in PGC18880 in the constellation of Pictor. Once confirmed (and that s very close) this will be the 50th SN for BOSS and a personal 6th for Peter. So I was delighted to image this upon his request.

Actually, this is an early image as last nights heat and humidity basically meant I had to throw all of the colour data away. Things improved in the early hours so I kept the luminance.

So, right now this is LRGB consisting of 3 hours, and 45 minutes each RGB. Taken with the 12.5" RCOS and STL11K. I do plan to go significantly deeper on this and will update the image idc.
http://www.martinpughastrophotograph...-PGC18880A.jpg (http://www.martinpughastrophotography.id.a u/images/SN-in-PGC18880A.jpg)

Congratulations to Peter and BOSS.

Cheers
Martin

[astroron]

Nice image Martin, and the bar is so pronounced :eyepop:
Cheers:thumbsup:

[CometGuy]

Good one Martin, I bet Peter will be pleased with that as it shows the fainter outer arm well. Oh and congrats to Peter on number 6!

Terry

[PeterM]

Wow Martin, very lovely image, thanks so much.
You can certainly see that fainter outer arm where the supernova is.
The supernova has now been typed as a very young Type 1a and may brighten in the high 13s, making it a definite telescope target.
should have a catalogue number from CBAT soon.

[Greg Bock]

Just beautiful Martin, it's a real buzz seeing one of our discoveries in such a great portrait, thanks a bunch for your time to drop everything and do this for BOSS!

[pvelez]

This was distributed this am via ATel


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Title: PSN J06213846-5942506 is a young type-Ia supernova
Author: N. Morrell, M. M. Phillips, C. Contreras, M. Roth, and E.
Y. Hsiao (Las Campanas Observatory); G. H. Marion (Harvard-Smithsonian
Center for Astrophysics); and M. Stritzinger (Aarhus University),
on behalf of the Carnegie Supernova Project
Queries: hsiao@lco.cl (hsiao@lco.cl)
Posted: 20 Dec 2012; 17:17 UT
Subjects:Infra-Red, Optical, Supernovae

We report that a near-infrared spectrum (range 800-2400 nm) of PSN J06213846-5942506 was obtained on Dec. 20.20 UT with the Folded-port Infrared Echellette
(FIRE) spectrograph on the 6.5-m Magellan Baade Telescope. The spectrum shows that it is a type-Ia supernova approximately a week before maximum light. The near-infrared spectrum is similar to that of SN 2003W at eight days before maximum (Marion et al. 2009, A.J. 138, 727). Adopting a redshift of z=0.008 for the presumed host galaxy PGC 18880, the velocity of the Mg II 1092.7-nm absorption feature is measured to be approximately 12,200 km/s. The latest optical photometry from the 1-m Swope Telescope is r =
14.3 mag on Dec. 20.29 UT, on the rise from the previous two nights.

*********************************** **************

Another type Ia - well done lads. Lets hope its brightens so we can try for some spectra

Pete

[Martin Pugh]

Thanks for the information there Pete.

Got another 5 hours last night on this, so a much improved image is on the way shortly.
cheers
Martin

[Andrew Pearce]

Hi All

I've observed SN 2012hr over the past couple of nights and it's brightened since discovery. On Dec 22.64 UT and 23.7 UT I estimated it as mag 13.8 on both nights. Well done to the BOSS team for discovering a bright one. As a visual variable start observer most of the SNe are way too faint to observe. You do get a buzz out of seeing a massive stellar explosion with your owb eye balls!

Regards
Andrew Pearce
Western Australia

[Colin D]

Thanks Andrew.
Keep the visual obs coming. The weather here hasn't been too kind since Peter's discovery.
Will be interesting to follow the light curve through to max and beyond.