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 » Thu May 11, 2017 12:01 pm

François,

Coincidence, j'ai également fait le spectre de SU Lyn le 9 mai et le 20 avril
Le profil H Alpha évolue avec une partie en emission qui augmente et une partie en absorption qui s'élargie
Image

Le profil H beta quant à lui augmente en intensité mais sans montrer des changements notoires dans le profil.
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 » Tue Oct 03, 2017 5:37 am

First spectrum for the new season

sulyn_20171003_155_FMTeyssier.png


H alpha

sulyn_20171003_155_ha.png
sulyn_20171003_155_ha.png (17 KiB) Viewed 1082 times


[OIII]

sulyn_20171003_155_oiii.png
sulyn_20171003_155_oiii.png (17.58 KiB) Viewed 1082 times


Ongoing observations of this new discovered symbiotic on the request of Katarzyna Drozd

François Teyssier
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Re: SU Lyn Call for observations by Katarzyna Drozd

Postby James Foster » Sun Dec 03, 2017 1:49 pm

Here is a LhiresIII spectra, process in Isis, I took last night (02Dec17) centered on Ha:
Image
Here's the 2D, Isis processed image:
Image

Per Peter Somogyi, I added a 2" Lumicon barlow that gives me a 1.67 magnification factor to my F/6.8 system yielding about F/11.4 for better light throughput to the LhiresIII.
I've taken photometry the last month on this object and just took a LISA spectrum tonight (03Dec17). Will post those later after I get some sleep.......

James
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Lhires III (2400 & 1800 ln/mm Grat) Spectroscope,
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Re: SU Lyn Call for observations by Katarzyna Drozd

Postby James Foster » Sun Dec 24, 2017 4:28 pm

Here are LhiresIII spectra of SU Lyn, processed in Isis, I took over the last few nights in Dec........
Ha(22Dec17):
Image
Ha(15Dec17):
Image
Hb(15Dec17):
Image
CaK (22Dec17):
Image
CaK (19Dec17)resampled with low-pass gaussian:
Image

The Hb seems especially interesting with many ripples and "step-ladder" increases towards the right.........the NeIII(?) line around 3868.76 has decreased in intensity btw the earlier CaK spectra shot and the 22Dec17 spectra. I still have a few more to process that I will display latter.

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

Postby James Foster » Thu Jan 04, 2018 10:42 am

Here is my latest (01Jan18) low resolution-LISA spectra of SU Lyn:
Image
Nice activity of system. The H-Beta spike seen in the LhiresIII spectrum is of course invisible at this resolution; I included the
H-Beta line to reference with the previous LhiresIII spectra. The H-epsilon absorption is just barely visible..........will shoot this
object again over the next few months.

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

Postby Olivier GARDE » Wed Jan 24, 2018 3:52 pm

Last spectrum taken with eShel spectrograph (R=11000) and comparison with some previous observations

The full graph (23 orders merged)

Image

H Alpha evolution

Image

H Beta evolution

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 James Foster » Thu Feb 01, 2018 1:23 am

Here are my latest SU Lyn Spectra (Ha & Hb):
HA:
Image
Hb:
Image
I've tried to shoot this in the CaK band the last two weeks, but the continuum is very week compared to 1 month ago. I'll try again but with
2-3 hours of exposing....maybe the DA component with its accretion disk is inert/eclipsed or at a very low energy state?

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

Postby James Foster » Thu Feb 01, 2018 5:21 pm

Here is the recent (01Feb18) Cak region of SU Lyn's spectrum:
Image
25X600sec exposures were processed through Isis to generate the very weak CaK continuum of SU Lyn. I've tentatively identified a NeIII line around 3868A.
(could be the Ti line around the same wavelength?)

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

Postby Francois Teyssier » Mon Feb 05, 2018 5:23 pm

First clear night of the year!

A spectrum of SU Lyn with eshel
H beta - [OIII] range, with a comparison with the M5III 13 Lyr, useful to highlight the emission lines
sulyn_20180204_762_Hb.png

[OIII] 4959 and 5007 appear clearly

H alpha range
sulyn_20180204_762_Ha.png


Ha in RV
sulyn_20180204_762_HaRV.png
sulyn_20180204_762_HaRV.png (17.72 KiB) Viewed 621 times



James,

He I 7065 range : no line
sulyn_20180204_762_HeI.png
sulyn_20180204_762_HeI.png (12.42 KiB) Viewed 620 times


For line identification, you have to consider the emission spectrum as a all.
He I 7065 appears with He I 5876 (triplets) and also He I 6678.
No He I in emission in SU Lyn

[Ne III] 3869 makes sense (considering [OIII]). So the line at 3969 could be the other [Ne III] line.

PS: your -excellent- spectra are welcome for the database.

François Teyssier
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Re: SU Lyn Call for observations by Katarzyna Drozd

Postby James Foster » Thu Feb 08, 2018 1:12 am

Thanks for the feedback and Nice results Francois!

Here are my SU Lyn spectra results shot in Ha, Hb, He5885/Na doublet, & CaK bands (2-5Feb2018):
Image
Image
Image
Image

Is the star M5III 13 Lyr in Miles/Edoline database or did you use it as your IRC star by shooting 13 Lyr just before dawn?
The line identification for NeIII for the CaK round 3866A is tentative I used Plotspectra's option and that NeIII line on the annotation list
looked like a match. I'll look for that other NeIII line you mentioned.

James
James R. Foster
Lhires III (2400 & 1800 ln/mm Grat) Spectroscope,
LISA Visual & IR Kit Spectroscope, and
Star Analyzer 200
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