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-

guest star

position:

four chi east of the 2nd star of Nandou

-47

old spelling:

4° away east from 2nd star Nan-Tou

duration:
-
-
colour etc.:
bluish-white

supernova?

suggested

nova

likely

supernova candidates

nova candidates

no SNR/ PSR candidate

AS 327, V5569 Sgr, OGLE-BLG-DN-1057, OGLE-BLG-DN-1056

alternatives:
         comet, microlensing or

...

most likely:

AS 327 or V5569 Sgr

Reference (see publications)

Paper 0: Protte and Hoffmann, AN, 2020 

Paper 1: Vogt, Hoffmann, Tappert, AN, 2019 

Paper 2: Hoffmann, MNRAS 2019 

Paper 3: Hoffmann, Vogt, Protte, AN, 2020 

Paper 4: Hoffmann and Vogt, MNRAS, 2020

Paper 5: Hoffmann and Vogt, MNRAS, 2020

Paper 6: Hoffmann and Vogt, MNRAS, 2020

Book: Wolfschmidt and Hoffmann (eds.) 2021

Paper 7: Hoffmann, Vogt, New Astronomy, 2022

Reference

Paper 5

Reference

Paper 3,4

Map of the search field

no SNR/ PSR candidate

red ovals: all SNRs in field, 
blue asterixes: pulsars in the field

AS 327 or V5569 Sgr
AS 327 or V5569 Sgr

diamonds: all CVs in field, 
filled diamonds: bright enough

cyan ovals: all PNe in field, 
diamonds: symbiotic & CVs

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