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On the Nature of CP PupWe present new X-ray and optical spectra of the old nova CP Pup (nova Pup 1942) obtained with Chandra and the CTIO 4m telescope. The X-ray spectrum reveals a multi-temperature optically thin plasma reaching a maximum temperature of 36+19 keV 16 absorbed by local complex neutral material. The time resolved optical spectroscopy confirms the presence of the 1.47 hr period, with cycle-to-cycle amplitude changes, as well as of an additional long term modulation which is suggestive either of a longer pe- riod or of non-Keplerian velocities in the emission line regions. These new observational facts add further support to CP Pup as a magnetic cataclysmic variable (mCV). We compare the mCV and the non-mCV scenarios and while we cannot conclude whether CP Pup is a long period system, all observational evidences point at an intermediate polar (IP) type CV.
Document ID
20140011559
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
External Source(s)
doi:10.1093/mnras/stt1565
Authors
Mason, E. (Osservatorio Astronomico Trieste, Italy)
Orio, M. (Osservatorio Astronomico Padova, Italy)
Mukai, K. (Maryland Univ. Baltimore County Catonsville, MD, United States)
Bianchini, A. (Padua Univ. Italy)
deMartino, D. (Osservatorio Astronomico di Capadimonte Napoli, Italy)
diMille, F. (Padua Univ. Italy)
Williams, R. E. (Space Telescope Science Inst. Baltimore, MD, United States)
Date Acquired
September 10, 2014
Publication Date
January 1, 2013
Publication Information
Publisher: Royal Astronomical Society
Subject Category
Astrophysics
Report/Patent Number
GSFC-E-DAA-TN11194
Funding Number(s)
CONTRACT_GRANT: NNG06EO90A
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
PUP
Nature
CP

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