Observations of ZZ Psc in support of a JWST campaign

[Jeremy Shears]

A discussed in the October JBAA and the June VSS Circular (1), the VSS has been approach with a request for photometric observations of ZZ Psc by Dr Tim Cunningham, Center for Astrophysics at Harvard. This is in support of his upcoming JWST observations scheduled for Nov 12—16.

Tim has contacted me to confirm this month’s JWST schedule still stands and that all observations this year, especially those taken this month, would be extremely valuable for the project.

ZZ Psc is V~13 white dwarf with non radial pulsations and which is thought to be surrounded by a debris disc.

Go well!
Jeremy

(1) https://britastro.org/vss/VSSC204.pdf

PS note that ZZ Psc has a high prpoper motion so ssome charts show it a bit away from its actual position as discussed in this Forum thread:https://britastro.org/forums/topic/zz-psc-not-where-it-should-be

[Mr Ian David Sharp]

Hi all,

I managed a 5 hour run on ZZ Psc from Spain last night (18:15 to 23:20 UTC) and got a nice light curve with 271 points showing pulsations.

I’ve attached the light curve and my Peranso Generalized Lomb-Scargle analysis which shows a strong periodic component at 0.242 hours. I’ve also attached the phase-folded view which looks quite convincing.

Cheers
Ian.

Attachments:

1. 

   20251103_ZZ-Psc_V_PixelSkies-C11-Moravian_IDS_plot_lines_check.png
   

2. 

   ZZ-PSC-Peranso.png
   

[Jeremy Shears]

That’s excellent, Ian.

Jeremy

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