Notes for HD 219542 B

by Jean Schneider

update: 4 May 2004

The planet(s):

• Detection method: Radial Velocity
• Basic data:

  Name:	HD 219542B b
  M.sini:	0.30 MJ
  Semi-major axis:	0.46 AU
  Orbital period:	112.1 ± 1.2 d.
  Eccentricity:	0.32 ± 0.15
  Omega (deg):	51 ± 33
  T_peri (JD-2450000):	1770.6 ± 8.0
  Inclinaison:	-

• Remarks:
  03 May. 04: No planet (Desidera et al 2004)
  07 Apr. 03: Still possible that "RV" variations dues to stellar activity
• References:
  1. DESIDERA S., GRATTON R., ENDL M., CLAUDI R., COSENTINO R., BARBIERI M., et al. 2004
     No planet around HD 219542 B.
     Astron. & Astrophys., 420, L27
     paper
  2. DESIDERA S., GRATTON R., ENDL M., BARBIERI M., CLAUDI R., COSENTINO R., LUCATELLO S., MARZARI F. & SCUDERI S., 2003
     A search for planets in the metal-enriched binary HD 219542.
     Astron. & Astrophys., 405, 207
     paper
  3. GRATTON R., BONANNO G., CLAUDI R., COSENTINO R., DESIDERA S., LUCATELLO S. & SCUDERI S., 2001
     Non-interacting main-sequence binaries with different chemical compositions: Evidences of infall of rocky material?
     Astron. & Astrophys., 377, 123
     paper
• Other Web pages:
  1. Padova Observatory data, Radial velocity curve and press release