TY - JOUR
T1 - Nova sagittarii 1998 (V4633 Sgr)
T2 - A permanent superhump system or an asynchronous polar?
AU - Lipkin, Y.
AU - Leibowitz, E. M.
AU - Retter, A.
AU - Shemmer, O.
PY - 2001/12/21
Y1 - 2001/12/21
N2 - We report the results of observations of V4633 Sgr (Nova Sagittarii 1998) during 1998-2000. Two photometric periodicities were present in the light curve during the three years of observations: a stable one at P = 3.014 h, which is probably the orbital period of the underlying binary system; and a second one of lower coherence, approximately 2.5 per cent longer than the former. The latter periodicity may be a permanent superhump, or, alternatively, the spin period of the white dwarf in a nearly synchronous magnetic system. A third period, at P = 5.06d, corresponding to the beat between the two periods was probably present in 1999. Our results suggest that a process of mass transfer has taken place in the binary system since no later than two-and-a-half months after the nova eruption. We derive an interstellar reddening of E(B - V) ∼ 0.21 from our spectroscopic measurements and published photometric data, and estimate a distance of d ~∼ 9 kpc to this nova.
AB - We report the results of observations of V4633 Sgr (Nova Sagittarii 1998) during 1998-2000. Two photometric periodicities were present in the light curve during the three years of observations: a stable one at P = 3.014 h, which is probably the orbital period of the underlying binary system; and a second one of lower coherence, approximately 2.5 per cent longer than the former. The latter periodicity may be a permanent superhump, or, alternatively, the spin period of the white dwarf in a nearly synchronous magnetic system. A third period, at P = 5.06d, corresponding to the beat between the two periods was probably present in 1999. Our results suggest that a process of mass transfer has taken place in the binary system since no later than two-and-a-half months after the nova eruption. We derive an interstellar reddening of E(B - V) ∼ 0.21 from our spectroscopic measurements and published photometric data, and estimate a distance of d ~∼ 9 kpc to this nova.
KW - Accretion, accretion discs-stars
KW - Individual
KW - V4633 Sgr-novae, cataclysmic variables
UR - http://www.scopus.com/inward/record.url?scp=0041866842&partnerID=8YFLogxK
U2 - 10.1046/j.1365-8711.2001.04962.x
DO - 10.1046/j.1365-8711.2001.04962.x
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:0041866842
SN - 0035-8711
VL - 328
SP - 1169
EP - 1180
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -