SU Lyn Call for observations by Katarzyna Drozd

Information about outbursts of eruptive stars, Be activity, ...

Re: SU Lyn Call for observations by Katarzyna Drozd

Postby Olivier GARDE » Fri Apr 21, 2017 1:35 pm

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
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Re: SU Lyn Call for observations by Katarzyna Drozd

Postby Francois Teyssier » Fri Apr 21, 2017 5:25 pm

Je l'ai observée également hier soir

Mise à jour du suivi :

sulyn_ha.png
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François
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Re: SU Lyn Call for observations by Katarzyna Drozd

Postby Jacques Montier » Sat Apr 22, 2017 12:54 pm

Hello,

My contribution to SU Lyn

20170421_sulyn.png
20170421_sulyn.png (50.3 KiB) Viewed 1837 times


Regards,
--
Jacques Montier
Societe d'Astronomie de Rennes
IAU code J23
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Re: SU Lyn Call for observations by Katarzyna Drozd

Postby James Foster » Wed Apr 26, 2017 2:09 am

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 R. Foster
Lhires III (2400 & 1800 ln/mm Grat) Spectroscope,
LISA Visual & IR Kit Spectroscope,
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Re: SU Lyn Call for observations by Katarzyna Drozd

Postby umberto sollecchia » Wed Apr 26, 2017 4:26 pm

Bonjour, mon observation de 25/04/2017.
Umberto

Profilo SU _Lyn.png
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Re: SU Lyn Call for observations by Katarzyna Drozd

Postby JP Nougayrede » Fri Apr 28, 2017 9:10 pm

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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Re: SU Lyn Call for observations by Katarzyna Drozd

Postby Francois Teyssier » Sat Apr 29, 2017 6:51 am

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
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Re: SU Lyn Call for observations by Katarzyna Drozd

Postby James Foster » Sat Apr 29, 2017 10:16 am

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 R. Foster
Lhires III (2400 & 1800 ln/mm Grat) Spectroscope,
LISA Visual & IR Kit Spectroscope,
Alpy 600, and Star Analyzer 200
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Re: SU Lyn Call for observations by Katarzyna Drozd

Postby umberto sollecchia » Sat May 06, 2017 9:19 am

Bonjour à tous, placez l'observation du jour 05/05/2017.
Umberto

Profilo SU Lyn.png
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Re: SU Lyn Call for observations by Katarzyna Drozd

Postby Francois Teyssier » Wed May 10, 2017 9:41 pm

SU Lyn tonight
Impressive change in the absorption of H alpha

sulyn_20170420_856_fteyssier.png


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