Reply To: RW Cephei great dimming

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#614780
Robin Leadbeater
Participant

A high resolution spectrum (R=15000) taken tonight shows H alpha to be in emission

https://britastro.org/specdb/data_graph.php?obs_id=13128

There are a number of publicly available archived high resolution spectra taken with the ELODIE spectrograph at Observatoire Haute Provence between 1998 and 2005. None of these show H alpha in emission so this may be unique to this dimming.

Plots of the ELODIE spectra and comparisons with my spectra at both low and high resolution can be seen here on my website

http://www.threehillsobservatory.co.uk/astro/RW_Cep/rwcep_elodie_archive_THO_2022-12-19_lowres.png

http://www.threehillsobservatory.co.uk/astro/RW_Cep/rwcep_elodie_archive_THO_2022-12-19_Halpha.png

Is there any professional interest in these observations ? If so who should I be talking to for guidance on what specifically I should be focussing on (resolution, specific regions/lines)

Cheers
Robin