Issue |
Astron. Astrophys. Suppl. Ser.
Volume 133, Number 2, December I 1998
|
|
---|---|---|
Page(s) | 211 - 216 | |
DOI | https://doi.org/10.1051/aas:1998317 | |
Published online | 15 December 1998 |
Photometry of the dust nova V705 Cassiopeiae
1
Astronomical Institute of the Slovak Academy of Sciences, 059 60 Tatranská Lomnica, The Slovak Republic
2
Department of Mathematics, Informatics and Physics, Pedagogical Faculty, University of Trnava, 918 43 Trnava, The Slovak Republic
3
N. Copernicus Observatory and Planetarium, 616 00 Brno, The Czech Republic
Send offprint request to: L. Hric
Received:
9
April
1998
Accepted:
10
June
1998
We present the results of our UBV photoelectric photometry of V705 Cas
(Nova Cassiopeiae 1993) obtained at the Skalnaté Pleso, Stará
Lesná, Hlohovec and Brno Observatories. The observations cover the light
curve development of this nova over its stages of dust formation and
disappearance of the envelope. The results of the light curve analysis are
presented. We have also used the visual brightness estimates of V705 Cas
by the members of the VSNET network as an auxiliary data set in order to
determine the nova's brightness behaviour as accurately as possible.
The basic parameters of the brightness decline of the nova d,
33 d,
63 d,
61 d, with the accuracy not
worse than one day, were obtained on the basis of our light curves. The
relevant value of
mag and the value
mag in the maximum of brightness were derived.
The corresponding value of the mass of the white dwarf component of the
presumable underlying nova binary is
.
The colour excess at brightness maximum is
mag and the
corresponding value of the distance
kpc. This value of
the distance is very probably underestimated due to the strong extinction by
the dust envelope of the nova. The general problem of the use of statistical
calibrations as well as that of the distance determination for dust novae is
discussed.
Key words: stars: novae, cataclysmic variables / stars: individual: V705 Cas
© European Southern Observatory (ESO), 1998