Notes for HD 187123

Alias HIP 97336

by Jean Schneider

update: 24 September 2002

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The planet(s):

• Detection method: Radial Velocity at Keck
• Basic data:

  Name:	HD 187123 b	HD 187123 c
  M.sini:	0.52 MJ	?
  Semi-major axis:	0.042 AU	?
  Orbital period:	3.09 d.	> 3 y
  Eccentricity:	0.03 ± 0.003	?
  Omega (deg):	20	?
  T_peri (JD-2450000):	1029.73	?
  Inclinaison:	-

• Remarks: Pulsations and spots cannot be ruled out.
  Second planet to be confirmed.
  No transit found (Castellano 2000, Robb et al. 2000)
• References:
  1. BUTLER P., MARCY G., VOGT S. & APPS K., 1998
     A Planet with a 3.1 day Period Around a Solar Twin
     PASP, 110, 1389
     abstract and paper
  2. CASTELLANO T., 2000
     A Search for Planetary Transits of the Star HD187123 by Spot Filter CCD Differential Photometry.
     PASP, 112, 821
     paper
  3. GIMENEZ A., 2000
     ubvy Photometry of stars with planets.
     Astron. & Astrophys., 356, 213.
     paper
  4. GONZALEZ G., WALLERSTEIN G. & SAAR S., 1999
     Parent Stars of Extrasolar Planets. IV. 14 Herculis, HD 187123, and HD 210277
     ApJ. Letter, 511 Feb 1999
     paper
  5. LUHMAN K. & JAYAWARDHANA R., 2001
     A Keck Adaptive Optics Search for Companions to Stars with Planets.
     ApJ., accepted
     preprint
  6. ROBB R., CARDINAL R., WAGG J., BERDNDSEN A. & DESROCHES L., 2000
     Photometry of the HD 187123 Field.
     Inf. Bull. on Variable Stars, No. 4820, Dec. 99
     paper
  7. RYAN S, 2000
     The Host Stars of Extrasolar Planets Have Normal Lithium Abundances.
     MNRAS, in press preprint
  8. VOGT S., MARCY G., BUTLER P. & APPS K., 1999
     Six New Planets from the Keck Precision Velocity Survey
     ApJ., 536, 902
     paper
  9. ZHAO G., CHEN Y., QIU H. & LI. Z., 2002
     Chemical Abundances of 15 Extrasolar-Planet Host Stars.
     Astron. J., 124, 2224
     paper
• Other Web pages:
  1. Velocity curve (Marcy et al)
  2. Lightcurve of HD187123 (Russell Robb)

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The star:

• Distance:50 pc
• Spectral type: G5
• Apparent magnitude: V = 7.9
• Coordinates (2000):    RA = 19 46 57.45       DEC = +34 25 15.8
• Metallicity: [Fe/H]= 0.16
• Mass (M_sun): M= 1.06
• More data:
  • Basic Data (from simbad )
  • Most recent refs. (from ADS; enter `HD 187123' in the `objects' field)

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