Suspected/Misclassified Symbiotics: spectra required

David Boyd · Post by **David Boyd** » Thu Sep 01, 2022 11:27 am

Guider image of OY Cyg

: OY Cyg guider image.png (20.97 KiB) Viewed 21989 times

Spectrum of OY Cyg

: OY Cyg.png (35.48 KiB) Viewed 21989 times

Looks like a M6III - M7III spectrum.

David

JP Nougayrede · Post by **JP Nougayrede** » Thu Sep 01, 2022 8:08 pm

Hello,

Same result as David and Vincent on OY Cyg, albeit in low resolution

: OY guide.jpg (226.01 KiB) Viewed 21968 times

: OY Cyg_20220901T193820.png (45.56 KiB) Viewed 21968 times

Jean-Philippe

JP Nougayrede · Post by **JP Nougayrede** » Thu Sep 01, 2022 9:29 pm

2MASS J01090044+5203369 in Cassiopea

C11@F7 Alpy 600 slit 35 um CCD 414 5x300s

: 2MASS_J01090044_5203369.obs.png (40.57 KiB) Viewed 21959 times

Guide image and astrometry

: 2Mguide.jpg (492.4 KiB) Viewed 21959 times

Jean-Philippe

2SPOT · Post by **2SPOT** » Sun Sep 04, 2022 3:06 pm

Others candidates symbiotic stars taken in automatic mode from Chile :

Gaia 18bec : mag. V=13,5

V618 Sgr : Mag. V=10

Src 501 : Mag. G=13,6 ( close to 47 Tuc globular cluster)

Hamish Barker · Post by **Hamish Barker** » Tue Sep 06, 2022 11:55 pm

Hen 4-129 from last night. I don't have expertise to make classification of it but have submitted the fits file to Francois and Jaroslav.

Vincent Bouttard · Post by **Vincent Bouttard** » Sun Sep 11, 2022 1:18 pm

Hi all,

IRAS 18120+4530 and KIC 4918300.
IRAS 18120+430 seems to be a symbiotic system.

Very faint stars for my setup but a really nice challenge

Vincent

2SPOT · Post by **2SPOT** » Wed Sep 14, 2022 2:03 pm

Two others candidates taken in automatic mode from Chile last night :

- AL 4 (Mag. V=14,80) nothing to see, only a continuum

- AS 241 (Mag. V=15,80) Balmer's lines in emission

Christophe Boussin · Post by **Christophe Boussin** » Sun Sep 18, 2022 5:19 am

Hello all,

Here is my new contribution to this classification program with DV Aur which is identified as a long period variable in the Simbad database.
I obtained the following spectrum of DV Aur the 18th of September at 1 h 52 TU with my Alpy 600 (resolution of 509, JJ = 2459840.5781) and an acquisition time of 60 min (6 x 600s) :