Notes for HR 7504 = 16 Cyg B

by Jean Schneider

update: 18 September 2001

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The planet(s):

• Detection method: Radial Velocity
• basic data:

  Name:	HD 16CygB b
  M.sini:	1.5 MJ
  Semi-major axis:	1.72 AU
  Orbital period:	804 d.
  Eccentricity:	0.67
  Omega (deg):	86
  T_peri (JD-2450000):	542.11
  Inclinaison:	-

• Remark:
  22 Nov. 00: From astrometry Han et al (2000) claim a preliminary mass of 14 M_J and inclination of 173.0^o
  Visual binary. The companion is 16 Cyg A, about 700 AU away
• References:
  1. BUTLER P. & MARCY G., 1996
     The Lick Observatory Planet Search
     in Astronomical and Biochemical Origins and the Search for Life in the Universe, IAU Colloquium No. 161, Capri 1-5 July 1996, eds. C.B. Cosmovici, S. Bowyer, and D. Werthimer
     
  2. COCHRAN W., HATZES A., BUTLER P. & MARCY G., 1997
     The discovery of a planetary companion to 16 Cyg B
     Apj. 483, 457
     abstract and paper
  3. GIMENEZ A., 2000
     ubvy Photometry of stars with planets.
     Astron. & Astrophys., 356, 213.
     paper
  4. HAN I., BLACK D. & GATEWOOD G., 2000
     Preliminary astrometric masses for proposed exrasolar planetary companions.
     ApJ. Letters, 548, 57
     paper
  5. HAUSER H. & MARCY G., 1999
     The Orbit of 16 Cygni AB
     PASP, 111, 321
     paper
  6. HOLMAN M., TOUMA & TREMAINE S., 1997
     Chaotic variations in the eccentricity of the planet orbiting 16 Cygni B
     Nature, 386, 254
     
  7. KAMPER K.,1996
     Astrometric evidence that the mass of the companion to 16 Cyg B is substellar
     Apj. submitted
     preprint and fig.
  8. KATZ J., 1996
     Single Close Encounters Do Not Make Eccentric Planetary Orbits
     abstract and preprint
  9. LAWS C. & GONZALEZ G., 2001
     A Differential Spectroscopic Analysis of 16 Cygni A and B.
     ApJ., 553, 405
     paper
  10. MAZEH T., 1996
      The high eccentricity of the planet around 16 Cyg B
      preprint and Figures
  11. RYAN S, 2000
      The Host Stars of Extrasolar Planets Have Normal Lithium Abundances.
      MNRAS, in press preprint
  12. TAKEDA Y., SATO B., KAMBE E., AOKI W., HONDA S., KAWANOMOTO S., MASUDA S., IZUMIURA H., WATANABE E., KOYANO H., MAEHARA H., NORIMOTO Y., OKADA T., SHIMIZU Y., URAGUCHI F., YANAGIZAWA K. YOSHIDA M., NIYAMA S. & ANDO H., 2001
      Photospheric Abundances of Volatile and Refractory Elements in Planet-Harboring Stars.
      PASJ, 53, 1211
      paper
• Other Web pages:
  1. Velocity curves from Lick Observatory

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The star:

• Distance: ~ 21.4 pc
• Spectral type: G2.5V
• Apparent magnitude: m_V = 6.20
• Absolute luminosity:
• Coordinates (2000): RA = 19 41 51.8, DEC = +50 31 03
• Metallicity: [Fe/H]= 0.09
• Mass (M_sun): M= 1.01
• More data:
  • Basic Data (from simbad )
  • Most recent refs. (from ADS; enter ` HR 7504 ' in the `objects' field)

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