Y Gem is bright (V = 9 to 10) semi-regular variable known as X-rays and UV emitter.
RA = 07 41 08.52
DE = +20 25 44.33
A recent publication (Guerrero+,2024) establishes its status of symbiotic star (accretion powered):
https://ui.adsabs.harvard.edu/abs/2024a ... G/abstract
The spectrum (echelle R = 9000, at Observatory SMM-SP) shows a nice emission lines spectrum, including [Ne III], [O III], [O I], [N II], probably He I 5876.
Several characteristics are still not well established.
Spectra are welcome to develop the study.
Notably: echelle spectra, near UV and high resolution H alpha (usefull for an estimation of the diameter of the accretion disk)
One spectrum a week should be a good cadency.
Page opened in the database
https://aras-database.github.io/database/ygem.html
Y Gem: new bright symbiotic star
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Y Gem: new bright symbiotic star
François Teyssier
http://www.astronomie-amateur.fr
http://www.astronomie-amateur.fr