1996A&A...309..147M

Query : 1996A&A...309..147M

1996A&A...309..147M - Astronomy and Astrophysics, volume 309147-154 (1996/5-1)

The SU Ursa Majoris star CU Velorum: physical parameters, Doppler imaging and photometric time series.

MENNICKENT R.E. and DIAZ M.

Abstract (from CDS):

Time resolved Hα spectroscopy and differential photometry at the U, B bands, reveal an orbital period of 1.884±0.005h and a K radial velocity semiamplitude of 49±6km/s. The dynamical solution and spectroscopic measures indicate a mass ratio M2/M1=0.115±0.005, a primary mass M1=1.23±0.23M☉, a secondary mass M2=0.15±0.03M☉ and an inclination angle i=59±6deg. Doppler imaging reveals a line emissivity decreasing with radius as r–1.4. Smooth 0.11mag semiamplitude periodic oscillations at U and B bands, Hα V/R variations and equivalent width oscillations up to 15% of the mean value, could be due to a hotspot located in the stream-disk impact region. This picture is supported by the Hα Doppler tomogram.

Abstract Copyright: ∼

Journal keyword(s): novae, cataclysmic variables - stars: individual: CU Vel - stars: imaging - stars: fundamental parameters

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 - 2026 		#notes
1 V* WX Cet CV* 01 17 04.1794193856 -17 56 22.414606224           ~ 173 0
2 V* KT Per CV* 01 37 08.7946635024 +50 57 20.398380408   13.999 13.819 12.290   M3.5e 131 0
3 V* U Gem CV* 07 55 05.2324414746 +22 00 05.044127985   15.3 14.54     DA 1135 0
4 V* Z Cha CV* 08 07 27.7517751528 -76 32 00.665029356           M5.5 620 1
5 V* VV Pup CV* 08 15 06.8009599464 -19 03 17.765706024     13.90     M7V 413 0
6 PG 0818+513 CV* 08 22 36.0475955184 +51 05 24.558779364   15.73       ~ 127 0
7 V* CU Vel CV* 08 58 33.0342318672 -41 47 51.733120236           ~ 109 0
8 V* OY Car CV* 10 06 22.0793274312 -70 14 04.584660540           ~ 586 0
9 V* RZ Leo CV* 11 37 22.2524330304 +01 48 58.617459936     19.6     DA+dM2 170 0
10 V* GQ Mus No* 11 52 02.4296561952 -67 12 20.986391520           ~ 271 0
11 V* HV Vir CV* 13 21 03.1661521320 +01 53 29.075499492           DA 162 0
12 V* V1315 Aql CV* 19 13 54.5308677240 +12 18 03.239745228   14.81 14.33 14.33   ~ 136 0
13 GD 552 CV* 22 50 39.9583863216 +63 28 38.330366988   16 16.47     D 74 0
14 V* IP Peg CV* 23 23 08.5362249504 +18 24 59.206884012           M2 395 0

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