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Nova Sgr 2016

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FMT
FMT's picture
Nova Sgr 2016

What is the number of the recent nova ?

Nova Sgr 2016 No.2 in AAVSO alert 547

but No.1 on Koji's List of Recent Galactic Novae 

 

Spectra obtained by ARAS members can be downloaded from : 

http://www.astrosurf.com/aras/Aras_DataBase/Novae/2016_NovaSgr2016.htm

 

François Teyssier

 

Sebastian Otero
Sebastian Otero's picture
The two Sgr novae for 2016

François,
we knew there might be some confusion because the first nova in Sgr didn't make it to the news.

It is OGLE-2016-NOVA-02

That one reached Ic= 13.5 on mid-July.

Cheers,
Sebastian
 

 

FMT
FMT's picture
Thank you Sebatian,

Thank you Sebatian,

That's clear

Spectra of Nova Sgr 2016 b can be downloaded from : http://www.astrosurf.com/aras/Aras_DataBase/Novae/2016_NovaSgr2016b.htm

Cheers,

 

François

 

kojimukai
Designation

I note that CBET is calling ASASSN-16ig "Nova in Sagittarius," and not as "Nova Sagittarii 2016" or as "Nova Sagittarii 2016 No. 2." This might indicate that they are aware of OGLE-2016-NOVA-02 but are uncertain of its nature.

The discovery report by Mroz et al (ATel 9246) called OGLE-2016-NOVA-02 a possible classical nova. Williams & Darnley (ATel 9250) characterized their spectrum as "consistent with a highly reddened classical nova" and didn't go as far as to proclaim that they have confirmed its nature (perhaps because they only saw a few features, due to its heavy reddening). Are there other observations of OGLE-2016-NOVA-02 to nail down its nature? In my personal opinion, it probably is a classical nova, but the data published so far are insufficient for a definite classification.

So: I've updated my list. Originally, I had OGLE-2016-NOVA-02 at the bottom of my page with other OGLE novae, most of which were announced much later. Since this one was announced promptly, it deserved to be included in the table of 2016 novae, at least as a possible nova. (And honestly, I didn't bother to check which constellation it was in.) I also added a note about these two Sagittarius objects.

- Koji

Sebastian Otero
Sebastian Otero's picture
Improved position and ID

Thanks to Claus Tappert and Linda Schmidtobreick we have an improved position and identification in VSX.
The progenitor is invisible and not the nearby USNO-B1.0 star which is 2" away to the SSW.
Update your charts to avoid misidentifications if you follow the nova on its way to quiescence.

Cheers,
Sebastian

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