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| Query : 2011MNRAS.415.1509L |
2011MNRAS.415.1509L - Mon. Not. R. Astron. Soc., 415, 1509-1522 (2011/August-1)
Two extreme contact binary systems in the nearest globular cluster M4.
LIU L., QIAN S.-B. and FERNANDEZ-LAJUS E.
Abstract (from CDS):
We present the results of photometric solutions for two contact binaries in the nearby globular cluster M4. We estimate their physical parameters using the light-curve program of the Wilson-Devinney code. These systems have quite different mass ratios, which indicates that they did not form at the same time. V47 is an extreme mass-ratio system (q= 0.123 ± 0.002) being dissimilar to the same kind of field contact binaries. V53 is a high mass-ratio (q= 1.230±0.004), deep-contact (f= 79.7 ±1.9 per cent) system. It is also a blue straggler.
Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS
Journal keyword(s): binaries: eclipsing - blue stragglers - stars: evolution - stars: individual: V47 - stars: individual: V53
Simbad objects: 17
| Number of rows : 17 |
| 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* DZ Psc | SB* | 00 36 27.9388593960 | +21 32 14.535908016 | 11.64 | 11.08 | 10.554 | 10.255 | F7V | 73 | 0 | |
| 2 | HD 280332A | SB* | 05 01 10.8328702632 | +34 30 26.555760288 | 10.94 | 10.34 | ~ | 110 | 0 | |||
| 3 | HD 280332 | ** | 05 01 10.83934 | +34 30 26.5819 | 10.901 | 10.215 | 10.047 | 9.305 | G0 | 97 | 0 | |
| 4 | V* AH Aur | SB* | 06 26 04.9301455152 | +27 59 56.448934440 | 10.84 | 10.24 | 9.846 | 9.532 | F7V | 93 | 0 | |
| 5 | HD 60987A | Pu* | 07 38 30.2249452896 | +33 42 41.503274640 | 8.41 | 8.03 | 8.70 | F0 | 90 | 1 | ||
| 6 | V* FG Hya | SB* | 08 27 03.9412969584 | +03 30 52.329583548 | 10.62 | 10.04 | 9.544 | 9.401 | G0 | 213 | 0 | |
| 7 | V* Y Sex | SB* | 10 02 47.9625666528 | +01 05 40.327404108 | 10.38 | 9.95 | 9.875 | 8.471 | F3/5V | 122 | 0 | |
| 8 | V* TV Mus | EB* | 11 39 57.7633052952 | -64 48 59.229170568 | 11.48 | 10.75 | 9.712 | F2 | 76 | 0 | ||
| 9 | HD 103576 | * | 11 55 38.0372183472 | +47 15 26.635878216 | 8.92 | 8.65 | A3 | 50 | 0 | |||
| 10 | V* CK Boo | SB* | 14 35 03.7596377832 | +09 06 49.373523360 | 9.61 | 9.029 | 8.683 | 8.414 | F7/8V | 150 | 0 | |
| 11 | V* GR Vir | SB* | 14 45 20.2632619872 | -06 44 04.131471300 | 8.54 | 8.00 | 7.34 | G2/3V | 151 | 0 | ||
| 12 | V* YY CrB | SB* | 15 50 32.4342127104 | +37 50 07.554679692 | 9.28 | 8.69 | F8 | 114 | 0 | |||
| 13 | Cl* NGC 6121 SAW V66 | EB* | 16 23 25.5423829536 | -26 29 11.800992372 | 17.98 | 17.77 | 16.93 | 16.37 | 15.77 | ~ | 17 | 0 |
| 14 | M 4 | GlC | 16 23 35.22 | -26 31 32.7 | ~ | 1978 | 0 | |||||
| 15 | Cl* NGC 6121 SAW V72 | EB* | 16 23 38.4880359196 | -26 32 10.911560523 | 16.76 | 16.46 | 15.83 | 15.40 | 15.01 | ~ | 31 | 0 |
| 16 | NGC 6397 | GlC | 17 40 42.09 | -53 40 27.6 | 5.17 | ~ | 2103 | 0 | ||||
| 17 | V* V2388 Oph | SB* | 17 54 14.1665728728 | +11 07 49.770939000 | 6.72 | 6.0 | F5Vn | 133 | 0 |
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