Recurrent Nova RS Oph

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Viewing 19 posts - 21 through 39 (of 39 total)
  • Author
    Posts
  • #584603
    Paul G. Abel
    Participant

    Finally saw it- I used my 10x50mm finder last night, I made it magnitude 6.3

    #584604
    Derek Hufton
    Participant

    Me too Paul – following a string of cloudy nights since the outburst, the clouds finally parted. I made it mag 6.4 last night at 21:47 UT in 11x80B

    #584605
    Jack Martin
    Participant

    Clear here last night !

    Lhires lll 23 micron slit 2400 l/mm grating C14 Atik460 1 x 600s.

    Jack

    Essex UK

    #584626
    Alun Halsey
    Participant

     Last night’s attempt at RS Oph using Lhires III with 35um slit and 2400l/mm grating. Five 300 second subs captured through C9.25.

       Alun

      

    #584627
    Jack Martin
    Participant

    Last night Lhires111 23 micron slit 2400 l/mm grating C14 Atik460 10 x 600s.

    Jack

    Essex UK

    #584629
    Jack Martin
    Participant

    Last night Lhires111 23 micron slit 2400 l/mm grating C14 Atik460 3 x 600s. 

    Jack

    Essex UK

    #584642

    Munari and Valisa have published an article on “The 2021 outburst of RS Oph. A pictorial atlas of the spectroscopic evolution: the first 18 days” on ArXiv today.

    #584643
    David Boyd
    Participant

    A beautiful example of what can be achieved with high quality equipment and very compliant weather!
    David

    #584644

    Please continue to observe RS Oph – the eruption continues:

    #584646
    Paul Leyland
    Participant

    I’d love to.  My last attempt was 2021-09-01 and taken through thin cloud.  Not so thin, actually, as I needed several 1-minute exposures to get anything measurable.  It would normally take a single exposure of somewhere between 2-5 seconds.

    Clouds even thicker since then with the same forecast for several days.  I hope UK observers have better luck.

    The 2021-09-01 observation will be processed and uploaded RSN, honest guv.

    #584686
    Jack Martin
    Participant

    What is the cause of the narrowing of the ha line?

    Jack

    #584709
    Hugh Allen
    Participant

    Due to collision shock between the white dawrf nova explosion and red giant wind, the growth of very high energy coronal emission lines in the RS Oph spectrum now appears to be in full swing. Would others agree with my identification of these lines in the attached comparison?

    Cheers

    Hugh

    #584712
    Robin Leadbeater
    Participant

    Hi Hugh,

    Looks good. I identified the coronal lines lines in a 2006 Star Analyser spectrum using this reference

    This time round I’ve used ISIS to make a little animated gif (attached) showing the [FeX] line emerging based on 4 observations between 25th Aug and 11th Sept

    Cheers 

    Robin

    #584725
    #584728

    Declining, but not back at quiescence (minimum) yet.

    #584762
    Jack Martin
    Participant

    My latest spectrum showing interesting changes.

    #584794

    An ATel published yesterday reports that flickering in the light curve of RS Oph ceased during September: https://www.astronomerstelegram.org/?read=14974

    This suggests that the recent nova eruption destroyed the accretion disc, as was found following the previous eruption. in that event,it reappeared after 240 days.

    #608504

    A paper by Ulisse Munari and Paolo Valisa on “The 2021 outburst of RS Oph: a pictorial atlas of the spectroscopic evolution. II. From day 19 to 102 (solar conjunction)” has been posted on ArXix: https://arxiv.org/abs/2203.01378

    #611577

    I can’t believe its almost a year since the RS Oph eruption!

    An MNRAS pre-print on the “Study of 2021 outburst of the recurrent nova RS Ophiuchi: Photoionization and morpho-kinematic modelling”, on ArXiv today, presents the evolution of the optical spectra of the eruption, includes amateur spectroscopy and photometry: https://arxiv.org/abs/2207.10473

Viewing 19 posts - 21 through 39 (of 39 total)
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