TCP J05390410+4748030 (dwarf nova)

TCP J05390410+4748030 (dwarf nova)

Postby Paolo Berardi » Wed Mar 27, 2019 9:45 pm

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. ... 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).


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.



PS: Thank you Jean-Jacques for "revitalising" the forum! ;-)
Paolo Berardi
Posts: 544
Joined: Thu Sep 29, 2011 10:51 pm

Re: TCP J05390410+4748030 (dwarf nova)

Postby James Foster » Tue Apr 02, 2019 10:09 am

Here is mine (Taken 16 & 17 March 19):
NOTE: Most lines except H-alpha purely are speculative.

James Foster
Lhires III (2400/1800/600 ln/mm Grat) Spectroscope,
LISA IR/Visual Spectroscope (IR Configured Presently)
Alpy 600 with Guide/Calibration modules and Photometric slit
Star Analyzer 200
James Foster
Posts: 390
Joined: Sun Jan 24, 2016 7:14 am

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