Notes for HD 82943

by Jean Schneider

update: 12 September 2002

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The planet(s):

• Detection method: Radial velocity
• Basic data:

  Name:	HD 82943 b	HD 82943 c
  M.sini:	1.63 MJ	0.88 MJ
  Semi-major axis:	1.16 AU	0.73 AU
  Orbital period:	444.6 ± 8.8 d.	221.6 ± 2.7 d.
  Eccentricity:	0.41 ± 0.08	0.54 ± 0.05
  Omega (deg):	117.8 ± 3.4	-
  T_peri (JD-2450000):	1626.8 ± 1.5	-
  Inclinaison:	-	-

• Remarks:
  10 May 01; Li detected in the atmosphere of the star; interpreted as engulfment of a planet (or planets) by the star (Israelian et al. 2001).
  22 Nov. 00: From astrometry Han et al (2000) claim a preliminary mass of 36 M_J and inclination of 176.4^o
  
• References:
  1. GOZDZIEWSKI K. & MACIEJEWSKI A., 2001b
     Dynamical Analysis of the Orbital Parameters of the HD 82943 Planetary System.
     ApJ. Letters, 10 Dec
     paper
  2. HADJIDEMETRIOU J., 2002
     Resonant periodic motion and the stability of extrasolar planetary systems.
     Celestial Mechanics and Dynamical Astronomy, in press preprint
  3. HAN I., BLACK D. & GATEWOOD G., 2000
     Preliminary astrometric masses for proposed exrasolar planetary companions.
     ApJ. Letters, accepted
     paper
  4. ISRAELIAN G., SANTOS N., MAYOR M. & REBOLO R., 2001
     Evidence for planet engulfment by the star HD82943.
     Nature, 411, 163
     paper
  5. JIANGHUI J., LIN L., GUANGUY L., KINOSHITA H. & NAKAI H., 2002
     The dynamics of the HD 82943 planetary system.
     ApJ., submitted
     preprint
  6. JIANGHUI J., HIROSHI K., LIN L., GUANGUY L., & NAKAI H., 2002
     The Stability Analysis of the HD 82943 and HD 37124 Planetary Systems.
     ApJ., submitted
  7. SANDQUIST E., DOKTER J., LIN D. & MARDLING R., 2001
     On ^6 Li Contamination by Planetary Consumption in HD 82943.
     ApJ., submitted
  8. ESO Press release
  9. exoplanets message # 150
• Other Web pages:
  1. Geneva group velocity curve and data

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The star:

• Distance: 27.46 pc
• Spectral type: G0
• Apparent magnitude: V = 6.54
• Coordinates :      RA = 09 34 50.7361       DEC = -12 07 46.365
• Metallicity: [Fe/H]= 0.32
• Mass (M_sun): M= 1.05
• More data:
  • Basic Data (from simbad )
  • Most recent refs. (from ADS; enter ` HD 82943 ' in the `objects' field)

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