SU Lyn Call for observations by Katarzyna Drozd

Information about outbursts of eruptive stars, Be activity, ...
Olivier GARDE
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Re: SU Lyn Call for observations by Katarzyna Drozd

Post by Olivier GARDE »

A comparison between 2 spectra taken about 1 month interval (28th march and yesterday).

H Alpha and H beta line intensity increase about 60% (corrected from heliocentric velocity)
Image

Image
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
Francois Teyssier
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Re: SU Lyn Call for observations by Katarzyna Drozd

Post by Francois Teyssier »

Je l'ai observée également hier soir

Mise à jour du suivi :
sulyn_ha.png
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François
Jacques Montier
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Re: SU Lyn Call for observations by Katarzyna Drozd

Post by Jacques Montier »

Hello,

My contribution to SU Lyn
20170421_sulyn.png
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Regards,
--
Jacques Montier
Societe d'Astronomie de Rennes
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James Foster
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Re: SU Lyn Call for observations by Katarzyna Drozd

Post by James Foster »

Hi. Here is my latest low resolution (R= 993) spectra of SU Lyn (11X90sec 2x2 bin exposures with the CDK17 at F/6.8):
Image
Per previous advice, I scaled the spectrum "long" on the Y-axis to bring up more detail on the shorter-wavelength side of the spectrum.

I'll try to get one more high resolution (Grating 1800 l/mm) spectra of the Ha region of SU Lyn before it slips behind my house in the next week or two.

James
Last edited by James Foster on Sat Apr 29, 2017 10:08 am, edited 3 times in total.
James Foster
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umberto sollecchia
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Re: SU Lyn Call for observations by Katarzyna Drozd

Post by umberto sollecchia »

Bonjour, mon observation de 25/04/2017.
Umberto
Profilo SU _Lyn.png
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JP Nougayrede
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Re: SU Lyn Call for observations by Katarzyna Drozd

Post by JP Nougayrede »

Buongiorno,
SU Lyn en basse résolution le 20.8/04/2017, flux absolu, pour référence HD 50420 (V 6.15 à 5293A)
Bon ciel,
Jean-Philippe
SULyn.png
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Francois Teyssier
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Re: SU Lyn Call for observations by Katarzyna Drozd

Post by Francois Teyssier »

Impeccable, Jean-Pierre, j'attends ton spectre pour la base

James:
- OK for the Ca II absorptions
- HI balmer exist but are not visible at such a resolution (for this star at this phase)
- The other identifications (Ca and Cl) are wrong
You have only the variations of the pseudo contnuum
Cl III is not a common line in symbiotics. It appears, faint, in some planetary nebula
Highly ionized Ca lines can be observed in some symbiotics but require higher resolution

For lines identification, I suggest you choose stars with strong emissions, such as AG Dra, CI Cyg, CH Cyg, BF Cyg ...

François
James Foster
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Re: SU Lyn Call for observations by Katarzyna Drozd

Post by James Foster »

To: François

RE:"James:
- OK for the Ca II absorptions
- HI balmer exist but are not visible at such a resolution (for this star at this phase)
- The other identifications (Ca and Cl) are wrong
You have only the variations of the pseudo contnuum
Cl III is not a common line in symbiotics. It appears, faint, in some planetary nebula
Highly ionized Ca lines can be observed in some symbiotics but require higher resolution..."

Ok. I reverted to my more trusty Bass V1.96 plot....will stick with that for awhile; hopefully the Fe at 4226A is real.
Wasn't that comfortable with Plotspectra in any case....

I'll leave the non-balmer lines out of the spectra to be less controversial.
Isis is almost too powerful for this novice user!

Sincerely

James
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
umberto sollecchia
Posts: 242
Joined: Tue Dec 30, 2014 3:25 pm

Re: SU Lyn Call for observations by Katarzyna Drozd

Post by umberto sollecchia »

Bonjour à tous, placez l'observation du jour 05/05/2017.
Umberto
Profilo SU Lyn.png
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Francois Teyssier
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Re: SU Lyn Call for observations by Katarzyna Drozd

Post by Francois Teyssier »

SU Lyn tonight
Impressive change in the absorption of H alpha
sulyn_20170420_856_fteyssier.png
François
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