J/A+A/492/145 UBV(RI)c light curves of Nova Cygni 2006 (Munari+, 2008)
The nature and evolution of Nova Cygni 2006.
Munari U., Siviero A., Henden A., Cardarelli G., Cherini G., Dallaporta S.,
Dalla Via G., Frigo A., Jurdana-Sepic R., Moretti S., Ochner P.,
Tomaselli S., Tomasoni S., Valisa P., Navasardyan H., Valentini M.
<Astron. Astrophys., 492, 145-162 (2008)>
=2008A&A...492..145M 2008A&A...492..145M
ADC_Keywords: Novae ; Photometry, UBVRI ; Photometry, Cousins
Keywords: stars: dwarf novae - stars: individual: V2362 Cyg
Abstract:
Nova Cyg 2006 has been intensively observed throughout its full
outburst. We investigate the energetics and evolution of the central
source and of the expanding ejecta, their chemical abundances and
ionization structure, and the formation of dust.
We recorded low, medium, and/or high-resolution spectra (calibrated
into accurate absolute fluxes) on 39 nights, along with 2353
photometric UBVRcIc measures on 313 nights, and complemented
them with IR data from the literature.
The nova displayed initially the normal photometric and spectroscopic
evolution of a fast nova of the FeII-type. Pre-maximum, principal,
diffuse-enhanced, and Orion absorption systems developed in a normal
way. After the initial outburst, the nova progressively slowed its
fading pace until the decline reversed and a second maximum was
reached (eight months later), accompanied by large spectroscopic
changes. Following the rapid decline from second maximum, the nova
finally entered the nebular phase and formed optically thin dust. We
performed a photo-ionization analysis of the emission-line spectrum
during the nebular phase, which showed a strong enrichment of the
ejecta in nitrogen and oxygen, and none in neon, in agreement with
theoretical predictions for the estimated 1.0M☉ white dwarf in
Nova Cyg 2006. The similarities with the poorly investigated V1493
Nova Aql 1999a are discussed.
Description:
UBVRcIc photometry of Nova Cyg 2006 = V2362 Cyg mapping its
photometric evolution until advanced phases is given.
Objects:
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RA (2000) DE Designation(s)
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21 11 32.3 +44 48 04 V2362 Cyg = NOVA Cyg 2006
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 106 367 UBVRcIc magnitudes and colors
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 --- HJD1 Heliocentric Julian date of B, B-V data
14- 19 F6.3 --- Bmag Johnson B magnitude
21- 26 F6.3 --- B-V Johnson B-V color index
28- 39 F12.4 --- HJD2 ? Heliocentric Julian date of Rc-Ic data
41- 46 F6.3 --- Rc-Ic ? Cousins Rc-Ic color index
48- 59 F12.4 --- HJD3 ? Heliocentric Julian date of V-Rc data
61- 66 F6.3 --- V-Rc ? Johnson-Cousins V-Rc color index
68- 79 F12.4 --- HJD4 ? Heliocentric Julian date of V-Ic data
81- 86 F6.3 --- V-Ic ? Johnson-Cousins V-Ic color index
88- 99 F12.4 --- HJD5 ? Heliocentric Julian date of U-B data
101-106 F6.3 --- U-B ? Johnson U-B color index
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Acknowledgements:
Ulisse Munari, ulisse.munari(at)oapd.inaf.it
(End) Ulisse Munari [INAF-OPAD, Italy], Patricia Vannier [CDS] 28-Apr-2009