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| Query : 2002AJ....124.2853K |
2002AJ....124.2853K - Astron. J., 124, 2853-2867 (2002/November-0)
Optical observations and orbital parameters of the close DA plus dMe binaries BPM 71214, EUVE J0720-31.7, BPM 6502, and EC 13471-1258.
KAWKA A., VENNES S., KOCH R. and WILLIAMS A.
Abstract (from CDS):
We have obtained photometric and spectroscopic observations of the close DA plus dMe binaries BPM 6502 and EC 13471-1258, and spectroscopic observations of the close binaries BPM 71214 and EUVE J0720-31.7. We have updated the ephemerides of BPM 6502 and EUVE J0720-31.7 with the spectroscopic measurements and obtained periods of 0.20162 and 0.15074 days for BPM 71214 and EC 13471-1258, respectively, by measuring the shift in Hα emission. Photometric variations in R and I due to reprocessing of incoming radiation from the hot white dwarf were observed in BPM 6502. We have also observed eclipses and ellipsoidal variations in B and R for EC 13471-1258, suggesting that the secondary is nearly filling its Roche lobe.
Abstract Copyright: ∼
Journal keyword(s): Stars: Binaries: Close - stars: individual (BPM 71214) - stars: individual (EUVE J0720-31.7) - Stars: Individual: Alphanumeric: BPM 6502 - stars: individual (EC 13471-1258) - Stars: White Dwarfs
Simbad objects: 10
| Number of rows : 10 |
| 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* CC Cet | CV* | 03 10 54.9907539360 | +09 49 25.681183680 | DA2+dM | 56 | 0 | |||||
| 2 | V* LL Eri | SB* | 03 32 43.4696700072 | -08 55 39.254639412 | 14.482 | 13.586 | 13.377 | DA+M2.5V | 40 | 1 | ||
| 3 | CD-36 2458 | PM* | 05 47 40.5788798683 | -36 19 42.836284712 | 13.307 | 12.194 | 10.736 | 9.763 | 8.614 | M1.5V | 75 | 0 |
| 4 | L 595-22 | Pe* | 05 56 24.7419040752 | -27 51 32.361761700 | 12.31 | 12.38 | sdG | 171 | 0 | |||
| 5 | V* IN CMa | CV* | 07 20 47.9109655416 | -31 47 02.732961552 | DAO+dM | 93 | 0 | |||||
| 6 | WG 17 | ** | 10 44 10.2360886800 | -69 18 18.075899052 | 13.05 | 13.09 | DA2+dM | 64 | 0 | |||
| 7 | V* HK Leo | CV* | 11 17 03.5267153856 | +18 25 58.282336884 | 14.6 | 14.70 | 14.8 | DA+dMe | 35 | 0 | ||
| 8 | Ton 617 | WD* | 12 26 30.8730979008 | +30 38 52.652529600 | 16.099 | 16.05 | DA+M3 | 68 | 0 | |||
| 9 | V* QS Vir | SB* | 13 49 52.0029035208 | -13 13 37.000132212 | 14.27 | 14.98 | 14.40 | 14.37 | DA3+dM | 147 | 1 | |
| 10 | GD 245 | CV* | 22 58 48.1351624092 | +25 15 43.908615894 | 13.699 | 13.650 | 13.833 | DA2.2 | 74 | 0 |
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