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Post Info TOPIC: Z Camelopardalis


L

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RE: Z Camelopardalis
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The dwarf nova Z Camelopardalis is in outburst.

Date: 18th April, 2012.
Magnitude range: 10 - 14.5 V
Period: ?
Satellite period: 0.289841 days
Type: UGZ

Position(2000): RA=08 25 13.20 | Dec=+73° 06' 39.2"



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L

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The dwarf nova Z Camelopardalis is in outburst.

Date: 26th March, 2012.
Magnitude range: 10 - 14.5 V
Period: ?
Satellite period: 0.289841 days
Type: UGZ

Position(2000): RA=08 25 13.20 | Dec=+73° 06' 39.2"



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L

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Title: Suzaku X-Ray Observation of the Dwarf Nova Z Camelopardalis at the Onset of an Optical Outburst
Authors: Kei Saitou, Masahiro Tsujimoto, Ken Ebisawa, Manabu Ishida

We present the result of a Suzaku X-ray spectroscopic observation of the dwarf nova Z Camelopardalis, which was conducted by chance at the onset of an optical outburst. We used the X-ray Imaging Spectrometer (a 38 ks exposure) and the Hard X-ray Detector (34 ks) to obtain a 0.35-40 keV spectrum simultaneously. Spectral characteristics suggest that the source was in the X-ray quiescent state despite being in the rising phase of an outburst in the optical band. The spectrum shows a clear signature of circumstellar absorption in excess of interstellar absorption and the reprocessed emission features of Fe fluorescence and Compton scattering. The extra absorption is explained due to partial coverage by either neutral or ionised matter. We found a spectral change during the observation, which is attributable only to the change in the circumstellar absorption. Such an X-ray spectral variation is reported for the first time in dwarf novae. We speculate that the variation in the circumstellar absorption is interpreted as a time-varying disk wind or geometrically flaring disk around the white dwarf during the propagation of a heat wave inward along the accretion disk at the beginning of the outburst, in which optical outburst and X-ray quiescent states co-exist.

Read more (405kb, PDF)



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L

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The variable star Z Camelopardalis is in outburst.

Date: 24th February, 2012.
Magnitude range: 10 - 14.5 V
Period: ?
Satellite period: 0.289841 days
Type: UGZ

Position(2000): RA=08 25 13.20 | Dec=+73° 06' 39.2"



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L

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Date:
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Z Camelopardalis is in outburst.

Date: 11th December, 2011.
Magnitude range: 10 - 14.5 V
Period: ?
Satellite period: 0.289841 days
Type: UGZ

Position(2000): RA=08 25 13.20 | Dec=+73° 06' 39.2"



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L

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Date:
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Z Camelopardalis is in outburst.

Date: 8th November, 2011.
Magnitude range: 10 - 14.5 V
Period: ?
Satellite period: 0.289841 days
Type: UGZ

Position(2000): RA=08 25 13.20 | Dec=+73° 06' 39.2"



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L

Posts: 131433
Date:
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Z Camelopardalis is in outburst.

Date: 8th August, 2011.
Magnitude range: 10 - 14.5 V
Period: ?
Satellite period: 0.289841 days
Type: UGZ

Position(2000): RA=08 25 13.20 | Dec=+73° 06' 39.2"


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L

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Z Camelopardalis is in outburst.

Date: 10th May, 2011.
Magnitude range: 10 - 14.5 V
Period: ?
Satellite period: 0.289841 days
Type: UGZ
Position(2000): RA=08 25 13.20, Dec=+73°06'39.2"


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L

Posts: 131433
Date:
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Z Camelopardalis is in outburst.

Date: 7th April, 2011.
Magnitude range: 10 - 14.5 V
Period: ?
Satellite period: 0.289841 days
Type: UGZ
Position(2000): RA=08 25 13.20, DE=+73°06'39.2"


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L

Posts: 131433
Date:
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Z Camelopardalis is in outburst.

Date: 4th February, 2011.
Magnitude range: 10 - 14.5 V
Period: ?
Satellite period: 0.289841 days
Type: UGZ

Position(2000): RA=08 25 13.20, DE=+73°06'39.2"


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