Suspected Symbiotic Stars: campaign for Adrian Lucy

[Francois Teyssier]

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/10.38 ... af71c/meta

Hen3-1768.PNG (98.33 KiB) Viewed 26805 times

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

http://www.astrosurf.com/aras/Aras_Data ... tedLog.htm

François

[Terry Bohlsen]

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 (7.96 KiB) Viewed 26781 times

_dr24636654969717900032_20181222_423_TBohlsen.png (8.87 KiB) Viewed 26781 times

[Francisco Campos]

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.

Greetings,
Fran

[Terry Bohlsen]

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 (7.81 KiB) Viewed 26329 times

GAA_DR2_41315875002733611280

_gaa_dr2_41315875002733611280_20190413_519_TBohlsen.png (8.23 KiB) Viewed 26329 times

Cheers
Terry

[Olivier GARDE]

Last night, we tried to make GAIA DR24168021909706732672 (mag V = 14.3) with a one meter telescope and a LISA with 50µm slit.
We had a lot of clouds during the acquisitions and had to take the spectrum through the clouds

[Olivier GARDE]

And with the same setup : V2525 Oph

[Francois Teyssier]

Adrian Lucy (Columbia University) fairly-urgently need ARAS optical spectra (any resolution, e.g. R~700--1000 or higher covering at least Halpha, preferably also Hbeta and [O III] 5007) of IRAS 15175-4508 and Haro 1-10.

Adrian writes:

These are my top two non-burning symbiotic candidates, and I'm trying to get a Chandra DDT observation of them based on recent Swift results. The Chandra PI is concerned about whether they are still detectably accreting, so I'd like to compare the emission line strengths to my SpUpNIC spectra from last year.

The coordinates for IRAS 15175-4508 (V=12.3--13.6) are:
15:20:58.3 -45:19:44.4

The coordinates for Haro 1-10 (V=14.2--15.3) are:
16:27:49.76 -29:16:45.46


Send spectra to francoismathieu.teyssier at bbox.fr