High resolution spectra of Deneb (BRICE context support)

[Christian Buil]

Here a sample of Deneb (alpha Cyg) spectra (Halpha region) for the period July-September (BRICE nanosats mission call for observations).
VHIRES-MO spectrograph (radial veolocity of Earth is corrected and H2O telluric lines are removed for a better visibility of the profile change.
The star is always active!








Christian

[Robin Leadbeater]

Hi Christian,

I am seeing the same sort of variation. Here are a few of mine.

deneb H alpha variation 2014-07-23 to 2014-08-19

_deneb_ha_respcor_telrem_helcor_20140723-20140819.png (10.69 KiB) Viewed 3550 times

The earlier quasi periodic variations in RV have changed and it now looks chaotic.

Deneb_RV_2014.png (7.48 KiB) Viewed 3550 times

Note the small ~1km/s step in RV (seen in the Vega check star measurements) due to remounting of the calibration lamp.

I hope the experts can make some sense out of it !

Robin