SU Lyn Call for observations by Katarzyna Drozd

[Olivier GARDE]

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


Le profil H beta quant à lui augmente en intensité mais sans montrer des changements notoires dans le profil.

[Francois Teyssier]

First spectrum for the new season

H alpha

sulyn_20171003_155_ha.png (17 KiB) Viewed 11947 times

[OIII]

sulyn_20171003_155_oiii.png (17.58 KiB) Viewed 11947 times

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

François Teyssier

[James Foster]

Here is a LhiresIII spectra, process in Isis, I took last night (02Dec17) centered on Ha:

Here's the 2D, Isis processed 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

[James Foster]

Here are LhiresIII spectra of SU Lyn, processed in Isis, I took over the last few nights in Dec........
Ha(22Dec17):

Ha(15Dec17):

Hb(15Dec17):

CaK (22Dec17):

CaK (19Dec17)resampled with low-pass gaussian:


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 Foster]

Here is my latest (01Jan18) low resolution-LISA spectra of SU Lyn:

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

[Olivier GARDE]

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

The full graph (23 orders merged)



H Alpha evolution



H Beta evolution

[James Foster]

Here are my latest SU Lyn Spectra (Ha & Hb):
HA:

Hb:

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 Foster]

Here is the recent (01Feb18) Cak region of SU Lyn's spectrum:

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

[Francois Teyssier]

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

[OIII] 4959 and 5007 appear clearly

H alpha range

Ha in RV

sulyn_20180204_762_HaRV.png (17.72 KiB) Viewed 11488 times

James,

He I 7065 range : no line

sulyn_20180204_762_HeI.png (12.42 KiB) Viewed 11487 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

[James Foster]

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):





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