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TCP J05390410+4748030 (dwarf nova)

PostPosted: Wed Mar 27, 2019 9:45 pm
by Paolo Berardi
Hi all! Some observations of the bright transient recently discovered by Yuji Nakamura that turned out to be a dwarf nova, WZ Sge subtype, on the basis of the spectrum and photometric behaviour. The target is currently V mag 13.4.

http://www.cbat.eps.harvard.edu/unconf/ ... 48030.html

The profiles are fluxed using V magnitude (averaged) obtained with concurrent photometry (15/3 -> V 11.91, 17/3 -> V 12.34, 22/3 -> V 13.00).

Development of spectrum between 15/3 and 22/3 2019. There is a gradual disk cooling (fading of CIII/NIII 4640 and He II lines).

Image

Early superhumps detected during the 17/3 session with a very small telescope, Mak90, Baader V filter, SXV-H9 CCD (just an attempt). Peranso analysis of the light curves returns a period of 0.05695 d.

Image

Paolo

PS: Thank you Jean-Jacques for "revitalising" the forum! ;-)

Re: TCP J05390410+4748030 (dwarf nova)

PostPosted: Tue Apr 02, 2019 10:09 am
by James Foster
Here is mine (Taken 16 & 17 March 19):
Image
NOTE: Most lines except H-alpha purely are speculative.


James