J/other/PZ/30.4 BVRI photometry of nova V445 Pup (Goranskij+, 2010)
The progenitor and remnant of the helium nova V445 Puppis.
Goranskij V.P., Shugarov S.Yu., Zharova A.V., Kroll P., Barsukova E.A.
<Perem. Zvezdy, 30, 4 (2010)>
=2010PZ.....30....4G 2010PZ.....30....4G
ADC_Keywords: Novae ; Photometry, UBVRI
Abstract:
V445 Pup was a peculiar nova having no hydrogen spectral lines in the
outburst. The spectrum contained strong emission lines of carbon,
oxygen, calcium, sodium and iron. We have performed digital processing
of photographic images of the V445 Pup progenitor using astronomical
plate archives. The brightness of the progenitor in the B band was
14.3mag. It was found to be a periodic variable star, its most
probable period being 0d.650654±0.000011d. The light curve shape
suggests that the progenitor was a common-envelope binary having a
spot on the surface and variable surface brightness. The spectral
energy distribution of the progenitor between 0.44 and 2.2um was
similar to that of an A0V type star.
Description:
In the Moscow SAI plate collection, we found 51 plates with images of
V445 Pup taken with the SAI Crimean Station 40-cm f/4 astrograph and
dated between 15 November 1969 and 4 November 1989.
We found 56 measurable images of V445 Pup on the plates of the
Sonneberg Observatory collection dated between 19 March 1984 and 17
January 1991.
Additionally, we measured all the Internet-accessible Digital Sky
Survey images of V445 Pup in B,R, and I bands and used 2MASS JHK
magnitudes to study the spectral energy distribution of the
progenitor.
We performed our observations of the V445 Pup remnant between 31 March
2003 and 20 October 2009. These observations were acquired in the
Special Astrophysical Observatory (SAO), with the 1-m Zeiss reflector
and CCD UBVRcIc photometer equipped with an EEV 42-40 CCD chip.
Objects:
----------------------------------------------------------
RA (2000) DE Designation(s)
----------------------------------------------------------
07 37 56.90 -25 56 58.9 V445 Pup = V* V445 Pup
----------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 32 51 Moscow B magnitudes of V445 Pup
table3.dat 35 31 Sonneberg B magnitudes of V445 Pup
table4.dat 47 6 Archive photographic magnitudes of V445 Pup
from Digital Sky Survey
table5.dat 39 34 CCD observations of V445 Pup after the outburst
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table[23].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.3 d JD Julian date
13- 17 F5.2 mag Bmag B magnitude
19- 22 F4.2 mag e_Bmag rms uncertainty on Bmag
24- 35 A12 --- Plate Plate number
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.3 d HJD Heliocentric Julian date
13- 17 F5.2 mag mag Magnitude in band Band
19- 22 F4.2 mag e_mag rms uncertainty on mag
24 A1 --- Band [BRI] Observatino band
26- 29 A4 --- DSS DSS plate name
31- 41 A11 --- Em Emulsion + filter
43- 47 A5 --- Plate Plate number
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 F12.4 d HJD Heliocentric Julian date
14- 18 F5.2 mag Bmag ?=- Johnson B magnitude
20- 24 F5.2 mag Vmag ?=- Johnson V magnitude
26- 30 F5.2 mag Rmag ?=- Cousins R magnitude
32- 36 F5.2 mag Imag ?=- Cousins I magnitude
38- 39 A2 --- Source Source (1)
--------------------------------------------------------------------------------
Note (1): Source as follows:
SO = Special Astrophysical Observatory 1-m Zeiss observation
VA = SAI Crimean Station 0.6-m Zeiss telescope
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 10-May-2012