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Poalo Berardi has obtained a spectrum of V335 Vul at medium resolution (R = 5000) V335 is suspected symbiotic in Belczinski & al. catalog
The Ha line is very narrow for a symbiotic (67 km/s in Paolo's spectrum)
The red giant is a carbon star
Mag ~ 11.8

A low resolution spectrum should be welcome in the next Information letter



François

To all :

This graph of V335 Vul, complemented the observation of Paolo.

Regards, Joan.

Hello,

here is my contribution, taken the last night.

Joan, you observed at the same time as me. Quina casualitat!
Greetings
Fran

Thank you Joan and Fran
It will be interesting to compare the instrumental response

Comments of Belczinski & al. in their Catalog of Symbiotics :
V335 Vul Suspected in [225]: presence of carbon giant and optical emission-line spectrum (H i) displaying hot continuum in blue. We agree with this classification although this object might be a single pulsating star: (i) the carbon star might pulsate with period of 342 days [55]and then emission lines behave as for a Mira variable – they disappear near minimum light and show up again at maximum (see spectra in [225]); (ii) Hα is very narrow:
2˚A (90 km s−1) and for a symbiotic star we would expect a width of about 300–500 km s−1; (iii) the Balmer decrement is different than that observed for symbiotic stars (it resembles that of Mira variable), although the authors of [225] claim that the Balmer decrement resembles that of a symbiotic star.

[225} = Munari, U., Tomov, T., Rejkuba, M., 1998, Inf. Bull. Variable Stars 4668
See also : Dahlmark, L., 1994, J. Am. Assoc. Variable Star Obs. 23, 34 for the period

François

Pas mal !
Bonne continuation,

François

CONGRATULATIONS, Fran !!

(Una mica més i ens cau el pèl ), Joan.

Hello,,


to have some fun and push my equipment I did 4h15min on V335 Vul tonight. Not all individual spectra are ok but the outcome is still nice with lot of details and an overall shape which looks like the one published here before.

Here is:
-the spectrum from 5000A (below it is very noisy, maybe I should I go to Hbeta...
-a zoom on Halpha and above, this start beeing very red.
-the astrometry on my guiding image
-the overall screen of the PC observatory during the acquisitions...


Cordialement,
Olivier Thizy

Il est un bon document, Olivier !
Tu sais, ce observer la V335 Vul est pas facile.
Joan.