Contenuti
Immagini
Carica la tua immagine
DSS Images Other Images
Articoli relazionati
Extrasolar planets around HD 196050, HD 216437 and HD 160691
We report precise Doppler measurements of the stars HD 216437, HD 196050and HD 160691 obtained with the Anglo-Australian Telescope using theUCLES spectrometer together with an iodine cell as part of theAnglo-Australian Planet Search. Our measurements reveal periodicKeplerian velocity variations that we interpret as evidence for planetsin orbit around these solar type stars. HD 216437 has a period of 1294+/- 250 d, a semi-amplitude of 38 +/- 3 m s-1 and aneccentricity of 0.33 +/- 0.09. The minimum (M sin i) mass of thecompanion is 2.1 +/- 0.3 MJUP and the semi-major axis is 2.4+/- 0.5 au. HD 196050 has a period of 1300 +/- 230 d, a semi-amplitudeof 49 +/- 8 m s-1 and an eccentricity of 0.19 +/- 0.09. Theminimum mass of the companion is 2.8 +/- 0.5 MJUP and thesemi-major axis is 2.4 +/- 0.5 au. We also report further observationsof the metal-rich planet bearing star HD 160691. Our new solutionconfirms the previously reported planet and shows a trend indicating asecond, longer-period companion. These discoveries add to the growingnumbers of mildly eccentric, long-period extrasolar planets aroundmetal-rich Sun-like stars.
| Positions of 100 southern bright circumpolar stars
Abstract image available at:http://adsabs.harvard.edu/abs/1981A&AS...44..151H
|
Sottometti un nuovo articolo
Link relazionati
Sottometti un nuovo link
Membro dei seguenti gruppi:
|
Osservazione e dati astrometrici
| Costellazione: | Centauro |
| Ascensione retta: | 13h56m58.40s |
| Declinazione: | -41°53'26.2" |
| Magnitudine apparente: | 8.519 |
| Distanza: | 609.756 parsec |
| Moto proprio RA: | -20.9 |
| Moto proprio Dec: | 2.5 |
| B-T magnitude: | 9.879 |
| V-T magnitude: | 8.632 |
Cataloghi e designazioni:
|
INHABITED SKY
