As part of the efforts to acquire spectra of lesser observed objects, I acquired this spectrum of PU Vulpecula on 27Aug17
from my high altitude/dark sky site at Mt. Pinos, CA:
While looking at the 2D image of the spectrum, this objects had so many emission spikes I thoughts it could be a nova; see 2D image after Isis V1.90 processing:
According to the Kyoto cataclysmic stellar data base, this is a Z Andromeda (or Z And/NC) type, trinary system whose main components are a set
of A4II-F8Iab+M6IIIe stars. Its well placed for observation, near +22 declination. I'll definitely add this to my regular photometry/spectra target list.
James
PU Vulpecula with many emission lines - 27Aug17
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PU Vulpecula with many emission lines - 27Aug17
James Foster
eShel2-Zwo ASI6200MM Pro
Lhires III (2400/1800/600 ln/mm Grat) Spectroscope
LISA IR/Visual Spectroscope (IR Configured)
Alpy 200/600 with Guide/Calibration modules and Photometric slit
Star Analyzer 200
eShel2-Zwo ASI6200MM Pro
Lhires III (2400/1800/600 ln/mm Grat) Spectroscope
LISA IR/Visual Spectroscope (IR Configured)
Alpy 200/600 with Guide/Calibration modules and Photometric slit
Star Analyzer 200
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- Posts: 1520
- Joined: Fri Sep 23, 2011 1:01 pm
- Location: Rouen
- Contact:
Re: PU Vulpecula with many emission lines - 27Aug17
Excellent, the LISA is well tuned
and correct identitification of the lines. You have also the second Raman OVI at ~ 7080.
On such a spectrum, you can estimate the electronic temperature from [OIII] lines
Yes, it a symbiotic star and more precisely a symbiotic nova (1979)
Very long plateau maximum ~ 8 years before decline and a deep eclispe just after the outburst
The reference catalog for symbiotics is
https://aas.aanda.org/articles/aas/pdf/ ... /h2255.pdf
A little bit old (2000) but still very usefull
The composition of the system is still subject of discussion
François
and correct identitification of the lines. You have also the second Raman OVI at ~ 7080.
On such a spectrum, you can estimate the electronic temperature from [OIII] lines
Yes, it a symbiotic star and more precisely a symbiotic nova (1979)
Very long plateau maximum ~ 8 years before decline and a deep eclispe just after the outburst
The reference catalog for symbiotics is
https://aas.aanda.org/articles/aas/pdf/ ... /h2255.pdf
A little bit old (2000) but still very usefull
The composition of the system is still subject of discussion
François
François Teyssier
http://www.astronomie-amateur.fr
http://www.astronomie-amateur.fr