Observation by Robin Leadbeater: Novae Cas and Per 2020 H alpha line at ...

Uploaded by

Robin Leadbeater

Observer

Robin Leadbeater

Observed

2020 Nov 30 - 17:20

Uploaded

2020 Dec 02 - 16:49

Objects

Nova Per 2020
Nova Cas 2020
Spectrum

Equipment

Celestron C11
LHIRES spectrograph 1200l/mm grating
ATIK 314 camera

Exposure

3000s, 8500s

Location

Wigton cumbria

Target name

Nova Cas 2020, Nova Per 2020

Title

Novae Cas and Per 2020 H alpha line at medium resolution

About this image

It is not often that two novae are bright enough to record medium resolution (R=5500) spectra on the same night. Here Nova Per 2020, a few days old near maximum at V mag ~8.5 is compared with Nova Cas 2020, 4 months old but still bright at V mag ~12.5, having undergone a series of rebrightennings.

Despite being 4 magnitudes fainter in V, the H alpha emission relative to the continuum is much stronger in nova Cas compared with nova Per and stands out well against the faint continuum in the spectrum images.

The H alpha line profiles are plotted in terms of radial velocity which maps the line of sight velocity of different parts of the ejecta.

Files associated with this observation

Nova_Cas_Per_20201130.png (97.7 kB)

Like this image

Peter Mulligan, Gary Poyner, Jeremy Shears, Andrew Smith, Graham Winstanley, Mike Harlow, David Basey, Nick Hewitt, Andy Wilson, Paul Leyland, Peter Carson

Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of work by third parties is expressly forbidden without the consent of the copyright holder. By submitting images to this online gallery, you grant the BAA permission to reproduce them in any of our publications.

Registered charity no. 210769
Registered company no. 117572

For more information including contact details, click here.

Our Terms of Use are here.

Our Privacy Policy is here.