2005A&A...431..289R


Query : 2005A&A...431..289R

2005A&A...431..289R - Astronomy and Astrophysics, volume 431, 289-296 (2005/2-3)

Time-resolved photometry of the nova remnants DM Gem, CP Lac, GI Mon, V400 Per, CT Ser and XX Tau.

RODRIGUEZ-GIL P. and TORRES M.A.P.

Abstract (from CDS):

We present the first results of a photometric survey of poorly studied nova remnants in the Northern Hemisphere. The main results are as follows: DM Gem shows a modulation at 0.123d (probably linked to the orbit) and rapid variations at ∼22min. A moderate resolution spectrum taken at the time of the photometric observations shows intense Heii λ4686 and Bowen emission, characteristic of an intermediate polar or a SW Sex star. Variability at 0.127 d and intense flickering (or quasi-periodic oscillations) are the main features of the light curve of CP Lac. A 0.1-mag dip lasting for ∼45min is observed in GI Mon, which could be an eclipse. A clear modulation (probably related to the orbital motion) either at 0.179d or 0.152d is observed in the B-band light curve of V400 Per. The results for CT Ser point to an orbital period close to 0.16d. Intense flickering is also characteristic of this old nova. Finally, XX Tau shows a possible periodic signal near 0.14d and displays fast variability at ∼24min. Its brightness seems to be modulated at ∼5d. We relate this long periodicity to the motion of an eccentric/tilted accretion disc in the binary.

Abstract Copyright:

Journal keyword(s): accretion, accretion discs - stars: binaries: close - novae, cataclysmic variables

Simbad objects: 14

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Number of rows : 14
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 V* PX And CV* 00 30 05.8083597744 +26 17 26.437695936   15.38 14.88 14.69   ~ 115 0
2 V* V400 Per No* 03 07 38.2647748368 +47 07 39.510115608           ~ 45 0
3 V* XX Tau No* 05 19 24.4641860376 +16 43 00.414603372           ~ 54 0
4 V* BT Mon No* 06 43 47.2416090432 -02 01 13.876883184   15.737 14.638 15.411   G8V 174 0
5 V* DM Gem No* 06 44 12.1094502816 +29 56 41.815181355           ~ 54 0
6 V* V348 Pup CV* 07 12 32.9097229704 -36 05 38.582602080   15.82 15.72 16.00 15.06 B0V 87 0
7 V* GI Mon No* 07 26 47.1066965424 -06 40 29.708015988           ~ 55 0
8 V* SW Sex CV* 10 15 09.3769935988 -03 08 32.850732738           ~ 200 0
9 V* CT Ser No* 15 45 39.0752447088 +14 22 31.757902824   16.772 16.530     ~ 75 0
10 V* V1084 Her CV* 16 43 45.6974063496 +34 02 39.549009444     12.48     ~ 37 0
11 V* V442 Oph CV* 17 32 15.1362474864 -16 15 22.068343152       14.120   ~ 87 0
12 V* V1223 Sgr CV* 18 55 02.3108012664 -31 09 49.584656268           ~ 331 0
13 V* CP Lac No* 22 15 41.1032963832 +55 37 01.322162256           ~ 133 1
14 V* AO Psc CV* 22 55 17.9860863984 -03 10 39.981831564           ~ 308 0

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