spectrum of sn2016fnr discovered by Ron Arbour

Home Forums Spectroscopy spectrum of sn2016fnr discovered by Ron Arbour

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  • #573597
    Robin Leadbeater
    Participant

    Unfortunately I was clouded out in the days following the discovery by Ron Arbour of sn2016fnr on 29th August

    https://wis-tns.weizmann.ac.il/object/2016fnr

    and the type (Ia) had already been confirmed before I was able to take a spectrum last night. 

    My spectrum taken at ~ mag 16 using the modified ALPY “200” however confirms with high confidence the classification of a type Ia supernova near maximum light as assessed using the supernova identification program SNID.

    https://people.lam.fr/blondin.stephane/software/snid/

    The attached shows my spectrum (black) overlaid on the best fit spectrum from the SNID library

    Robin

    #577481

    That is a fabulous spectrum for such a faint target Robin. A shame you were clouded out but this is another demonstration of what you can achieve with your setup.

    Andy

    #577486
    Robin Leadbeater
    Participant

    This time it is the confirming spectrum.

    at2016gfr was discovered by Tim Puckett’s amateur team 6 days ago but was embedded in the host galaxy and too faint at mag 17.6 for a spectrum.

     
    When I checked  on Saturday there was still no confirming spectrum but  it had brightened to around mag 16 so I was able to extract a spectrum (confirming it as a type Ia) using the modified ALPY 200 despite a full moon. Guider image and spectrum (compared with best fit from GELATO) attached
     
    Cheers
    Robin

    #577487

    Congratulations Robin. A great achievement to take the confirmation spectrum for a mag 16 supernova!

    Cheers

    Andy

    #577488
    Jeremy Shears
    Participant

    This is a marvellous result – well done, Robin!

    All the best,

    Jeremy

    #577489
    David Boyd
    Participant

    Hi Robin,

    Nice work. The results you are getting with your modified Alpy will make an interesting topic for discussion at the spectroscopy workshop next month. It would be interesting to discuss with Shelyak whether they will consider making this modification an option for customers.

    Cheers,

    David

    #577491
    Steve Cuthbert
    Participant

    Nice result Robin. You attending the Alpy spectro meeting next month?

    Steve

    #577492
    Robin Leadbeater
    Participant

    Hi Steve,

    Yes, I plan to be there

    Robin

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