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| Query : 1998A&A...339L..45V |
1998A&A...339L..45V - Astronomy and Astrophysics, volume 339, L45-48 (1998/11-2)
A second dust episode of the Wolf-Rayet system WR19: another long-period WC+O colliding-wind binary.
VEEN P.M., VAN DER HUCHT K.A., WILLIAMS P.M., CATCHPOLE R.M., DUIJSENS M.F.J., GLASS I.S. and SETIA GUNAWAN D.Y.A.
Abstract (from CDS):
We present observations of WR19 showing an infrared excess due to newly created dust similar to an event observed in 1988. We suggest that these episodes of dust-formation are periodic (P∼10yr) and related to the binary nature of the object, comparable to the colliding-wind binary WR140. In support of this thesis we identified absorption lines from a companion of spectral type O9.5-9.7. We propose monitoring the object to determine orbital parameters, non-thermal radio emission and the accurate shape of the infrared light-curve.
Abstract Copyright: ∼
Journal keyword(s): stars: Wolf-Rayet - stars: individual: WR 19, HD 96620 - binaries: general - infrared: stars
Simbad objects: 8
| Number of rows : 8 |
| 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 | * q Vel | PM* | 10 14 44.1556880397 | -42 07 18.988830783 | 3.98 | 3.90 | 3.85 | 3.83 | 3.81 | A2Va | 136 | 0 |
| 2 | WR 19 | WR* | 10 18 04.9885430688 | -58 16 26.244521868 | 14.80 | 13.85 | WC5+O9 | 68 | 0 | |||
| 3 | HD 96220 | ** | 11 05 33.9808836888 | -11 05 20.163039000 | 6.362 | 6.086 | F0V | 51 | 0 | |||
| 4 | HD 96620 | * | 11 06 54.5858053512 | -58 47 36.176175492 | 7.395 | 7.358 | 7.353 | 7.319 | A0IV | 38 | 0 | |
| 5 | HD 123008 | s*b | 14 07 30.6443226936 | -64 28 08.781137868 | 8.58 | 10.00 | 9.50 | 9.44 | ON9.2Iab | 106 | 0 | |
| 6 | MR 93 | WR* | 19 28 15.6142522320 | +19 33 21.527693100 | 14.83 | WC7+O9(III) | 110 | 0 | ||||
| 7 | HD 193793 | WR* | 20 20 27.9757908696 | +43 51 16.286840244 | 6.90 | 7.25 | 6.85 | 4.58 | WC7pd+O5.5fc | 710 | 0 | |
| 8 | HD 195177 | WR* | 20 28 22.6636321896 | +38 37 18.977440692 | 13.42 | 12.67 | 11.46 | WC4+Be | 88 | 0 |
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