Suspected Symbiotic Stars: campaign for Adrian Lucy

Re: Suspected Symbiotic Stars: campaign for Adrian Lucy

Postby Francois Teyssier » Thu Dec 20, 2018 5:41 pm

1. Research note of the newly identified yellow symbiotic Hen 3-1768 (≡ASAS J195948–8252.7), based on spectra obtained by Terry Bohlsen. Congratulations to Terry!
http://iopscience.iop.org/article/10.3847/2515-5172/aaf71c/meta

Hen3-1768.PNG
Hen3-1768.PNG (98.33 KiB) Viewed 501 times


2. Additional targets in Adrian's list. Some of them observable from northern hemisphere.

http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics/SuspectedLog.htm

François
Francois Teyssier
 
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Re: Suspected Symbiotic Stars: campaign for Adrian Lucy

Postby Terry Bohlsen » Sun Dec 23, 2018 1:55 am

We have had poor weather in December so I haven't been able to do much observing. I did have some clear skies last night but with a full moon.
I observed GAIA DR2 4636654969717900032 which I have observed before. It is a mostly flat featureless spectrum.
I also observed the second star on the list without a name but it is UCAC3 157:43452 at mag 12.3 in CMa.
It shows some features but no emission. Both were 30 mins of exposure. More time is probably needed but since there wasn't any emission I didn't persevere.
Terry
_ucac3157.43452_20181222_467_TBohlsen.png
_ucac3157.43452_20181222_467_TBohlsen.png (7.96 KiB) Viewed 477 times

_dr24636654969717900032_20181222_423_TBohlsen.png
_dr24636654969717900032_20181222_423_TBohlsen.png (8.87 KiB) Viewed 477 times
Terry Bohlsen
Armidale NSW
Australia
Terry Bohlsen
 
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Re: Suspected Symbiotic Stars: campaign for Adrian Lucy

Postby Francisco Campos » Sat Mar 30, 2019 6:56 pm

Hello,

here is a recent spectrum of the suspected symbiotic GDS J0731468-195434. No emission lines have been detected, the signal is low but enough to discard the presence of medium or strong emisison bands.

gdsj0731468-195434_ 20190329_842_FPC.png


Greetings,
Fran
Francisco Campos
 
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Re: Suspected Symbiotic Stars: campaign for Adrian Lucy

Postby Terry Bohlsen » Sun Apr 14, 2019 1:03 pm

Hi
These stars are starting to become visible in the evening again. I have taken spectra of 2 further targets.
GSC9507:2249 which is the 6th star on the list with no name.
_gsc95072249_20190412_517_TBohlsen.png
_gsc95072249_20190412_517_TBohlsen.png (7.81 KiB) Viewed 25 times

GAA_DR2_41315875002733611280
_gaa_dr2_41315875002733611280_20190413_519_TBohlsen.png
_gaa_dr2_41315875002733611280_20190413_519_TBohlsen.png (8.23 KiB) Viewed 25 times


Cheers
Terry
Terry Bohlsen
Armidale NSW
Australia
Terry Bohlsen
 
Posts: 136
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