2002A&A...381L..41I

Query : 2002A&A...381L..41I

2002A&A...381L..41I - Astronomy and Astrophysics, volume 381L41-44 (2002/1-3)

First detection of the growing humps at the rapidly rising stage of dwarf novae AL Com and WZ Sge.

ISHIOKA R., UEMURA M., MATSUMOTO K., OHASHI H., KATO T., MASI G., NOVAK R., PIETZ J., MARTIN B., STARKEY D., KIYOTA S., OKSANEN A., MOILANEN M., COOK L., KRAL L., HYNEK T., KOLASA M., VANMUNSTER T., RICHMOND M., KERN J., DAVIS S., CRABTREE D., BEAULIEU K., DAVIS T., AGGLETON M., GAZEAS K., NIARCHOS P., YUSHCHENKO A., MALLIA F., FIASCHI M., GOOD G.A., BOYD D., SANO Y., MORIKAWA K., MORIYAMA M., MENNICKENT R., ARENAS J., OHSHIMA T. and WATANABE T.

Abstract (from CDS):

We report on time-series photometric observations in the earliest stages of superoutbursts of the extreme dwarf novae, AL Com and WZ Sge, which started on 2001 May after the 6 years quiescence and on 2001 July after the 23 years quiescence, respectively. We detected the growth of ``early superhumps'' during the each rising stage. Our observations reject the mass transfer instability for the trigger of the superoutburst of WZ Sge stars, and show the existence of some relations between the ``early superhumps'' and the spiral structure, which gives a hint of the origin of the ``early superhumps.''

Abstract Copyright: ∼

Journal keyword(s): stars: cataclysmic variables - stars: dwarf novae - stars: individual (WZ Sge)

Simbad objects: 5

goto Full paper

goto View the references in ADS

Number of rows : 5
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* EG Cnc CV* 08 43 03.9863206560 +27 51 49.693595508           DAe 195 0
2 V* RZ Leo CV* 11 37 22.2524330304 +01 48 58.617459936     19.6     DA+dM2 170 0
3 V* AL Com CV* 12 32 25.7951754648 +14 20 42.292188276     16.2     ~ 249 0
4 V* HV Vir CV* 13 21 03.1661521320 +01 53 29.075499492           DA 162 0
5 V* WZ Sge CV* 20 07 36.5037622512 +17 42 14.733254952   15.30 15.20 10.817   D 982 0

To bookmark this query, right click on this link: simbad:objects in 2002A&A...381L..41I and select 'bookmark this link' or equivalent in the popup menu