Suspected/Misclassified Symbiotics: spectra required
Posted: Wed Jul 08, 2020 5:10 pm
Dear All,
Joroslav Merc, Rudolf Gàlis and M. Wolf have opened a new Database of Symbiotic stars
Merc, J., Gális, R., Wolf, M. (2019), First release of the New Online Database of Symbiotic Variables, Research Notes of the AAS, 3, 28, 2019RNAAS…3b..28M
Among them, some objects require additional information in order to check the classification.
Jaroslav requests spectra of the following objects:
PN K 1-6: Interesting planetary nebula, with the variable central star. A possible symbiotic binary in a center. The object was analyzed in this work: https://ui.adsabs.harvard.edu/?#abs/2011PASA...28...83F, however, they had no spectra at the disposal. They actually rejected the symbiotic classification, however, they admitted that they do not have spectra to confirm it. It is quite a bright object in Draco, well observable in this period of time.
V379 Peg: Symbiotic candidate or a cataclysmic variable. However, there is confusion in the literature, which object is really the one observed in an outburst in the eighties. See the discussion here: https://ui.adsabs.harvard.edu/abs/2003I ... H/abstract. No spectra are available. Most databases point to the red object (e.g. SIMBAD). SIMBAD even classifies the star as confirmed symbiotic binary. However, object in outburst was maybe the blue object with magnitude >18mag. At least you can try to acquire the spectrum of the red star. It is observable in the second half of the night.
V1017 Cyg: Symbiotic star according to https://ui.adsabs.harvard.edu/?#abs/200 ... .469..799S, however, no spectrum. In Cygnus, it should be high in the sky, but a fainter one.
I have two for the southern observers in my high-priority list, both observable very well now from the southern hemisphere.
EC 19249-7343, symbiotic star candidate (https://ui.adsabs.harvard.edu/?#abs/2013MNRAS.431..240O),
Another very interesting object, although faint (maybe approx 15 mag), Hen 3-860. Very interesting photometric behavior in 2018-2019. Good quality low-res spectrum could be very potential for a publication.
Send spectra to francoismathieu.teyssier at gmail.com for inclusion in the database
Joroslav Merc, Rudolf Gàlis and M. Wolf have opened a new Database of Symbiotic stars
Merc, J., Gális, R., Wolf, M. (2019), First release of the New Online Database of Symbiotic Variables, Research Notes of the AAS, 3, 28, 2019RNAAS…3b..28M
Among them, some objects require additional information in order to check the classification.
Jaroslav requests spectra of the following objects:
PN K 1-6: Interesting planetary nebula, with the variable central star. A possible symbiotic binary in a center. The object was analyzed in this work: https://ui.adsabs.harvard.edu/?#abs/2011PASA...28...83F, however, they had no spectra at the disposal. They actually rejected the symbiotic classification, however, they admitted that they do not have spectra to confirm it. It is quite a bright object in Draco, well observable in this period of time.
V379 Peg: Symbiotic candidate or a cataclysmic variable. However, there is confusion in the literature, which object is really the one observed in an outburst in the eighties. See the discussion here: https://ui.adsabs.harvard.edu/abs/2003I ... H/abstract. No spectra are available. Most databases point to the red object (e.g. SIMBAD). SIMBAD even classifies the star as confirmed symbiotic binary. However, object in outburst was maybe the blue object with magnitude >18mag. At least you can try to acquire the spectrum of the red star. It is observable in the second half of the night.
V1017 Cyg: Symbiotic star according to https://ui.adsabs.harvard.edu/?#abs/200 ... .469..799S, however, no spectrum. In Cygnus, it should be high in the sky, but a fainter one.
I have two for the southern observers in my high-priority list, both observable very well now from the southern hemisphere.
EC 19249-7343, symbiotic star candidate (https://ui.adsabs.harvard.edu/?#abs/2013MNRAS.431..240O),
Another very interesting object, although faint (maybe approx 15 mag), Hen 3-860. Very interesting photometric behavior in 2018-2019. Good quality low-res spectrum could be very potential for a publication.
Send spectra to francoismathieu.teyssier at gmail.com for inclusion in the database