Observation by Graham Beamson: VV Cephei H alpha

Uploaded by

Graham Beamson

Observer

Graham Beamson

Observed

2026 Sep 10 - 14:06

Uploaded

2026 Sep 10 - 14:12

Objects

VV-Cep
Spectrum

Equipment

SW Esprit 120
StarEx spectrograph
SW EQ6-R mount

Location

Cheshire UK

Target name

VV Cephei H alpha

Title

VV Cephei H alpha

About this image

VV Cephei is a binary star consisting of an M type supergiant and a B type main sequence star. A strong stellar wind from the M type star is captured by the B type to form an accretion disk. The H alpha spectrum of VV Cephei shows an H alpha emission line, with V and R components, from the accretion disc superimposed on the continuum, with absorption lines, from the M type star.

Files associated with this observation

VV-Cephei-Ha.jpg (49.0 kB)

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