Notes for gamma Cephei

alias HD 222404

update: 4 May 2005

The planet(s):

Detection method: Radial Velocity

Basic data:

Name:	gamma Cephei b
M.sini:	1.59 M_J
Semi-major axis:	2.03 AU
Orbital period:	902.26 ± 6 d.
Eccentricity:	0.2 ± 0.069
Omega (deg):	75.6 ± 18.8
T_peri (JD-2450000):	53156.8 ± 52.4
Inclination:	-

Remarks:
27 September 02: The star is part of a binary system with period 70 yrs ± 16 yrs, with an eccentricity of 0.439 ± 0.06 (Cochran et al 2002).
More data on the binary star at youngstars.mpe.mpg.de/PlanetenAGB/PUT/gamma_Cep_facts.html.
References:
1. BURROWS A., SUDARSKY D. & HUBENY I., 2004
  Spectra and Diagnostics for the Direct Detection of Wide-Separation Extrasolar Giant Planets.
  ApJ. , submitted
  preprint
2. CAMPBELL B., WALKER G. & YANG S., 1988
  A search for substellar companions to solar-type stars.
  ApJ., 331, 902
  abstract
3. COCHRAN W., HATZES A., ENDL M., PAULSON D., WALKER G., CAMPBELL B. & YANG S., 2002
  A Planetary Companion to the Binary Star Gamma Cephei.
  in 34^th DPS Meeting.
  BAAS, 34, 42.02
  abstract
4. DVORAK R., PILAT-LOHINGER E., BOIS E., FUNK B., SCHWARZ R., FREISTETTER F. & KISELEVA-EGGLETON L., 2004
  Planets in double stars: the gamma Cephei system.
  Rev. Mex. Astron. & Astrophys. Conf., 21, 222
  paper
5. DVORAK R., PILAT-LOHINGER E., FUNK B. & FREISTETTER F., 2003
  Planets in habitable zones: A study of the binary Gamma Cephei.
  Astron. & Astrophys., 398, L1
  paper
6. HABING H., GOMINIK C., JOURDAIN DE MUIZON M., LAUREIJS R., KESSLER M., LEECH K., METCALF L., SALAMA A., SIEBENMORGEN R., TRAMS N. & BOUCHET P., 2001
  Incidence and survival of remnant disks around main-sequence stars.
  Astron. & Astrophys., 365, 545
  paper
7. HAGHIGHIPOUR N., 2005
  Planet Formation, Habitability, and Dynamical Stability of Planets in Binary Star Systems; The Case of Gamma Cephei.
  BAAS, 37, No. 2, #7.01
  abstract
8. HAGHIGHIPOUR N., 2004
  On the Dynamical Stability of Gamma Cephei, an S-Type Binary Planetary System.
  in The Search For Other Worlds. 14th Annual October Astrophysics Conference in Maryland. Eds. De. Deming and S. Holt
  paper
9. HATZES A., COCHRAN W., ENDL M., McARTHUR B., PAULSON D., WALKER G., CAMPBELL B. & YANG S., 2002
  A Planetary Companion to Gamma Cephei A.
  ApJ., submitted
  preprint
10. HATZES A., COCHRAN W., ENDL M., PAULSON D., WALKER G. & McARTHUR B., 2002
  A Planetary Companion to the Binary Star Gamma Cephei.
  in Planetary Systems and their Formation Workshop from the Deutsche Astronomische Gesellschaft Meeting (Sep. 24 2002)
  abstract
11. LAWTON A. & WRIGHT P., 1989
  A planetary system for Gamma Cephei?
  JBIS, 42, 335
  abstract
12. PAULSON D., SAAR S., COCHRAN W. & HATZES A., 2002
  Searching for Planets in the Hyades II: Some Implications of Stellar Magnetic Activity.
  Astron. J., 124, 572
  paper
13. SOLOVAYA N. & PITTICH E., 2004
  The dynamical stability of extra-solar planets in binary systems.
  Contributions of the Astronomical Observatory Skalnaté Pleso, 34, 105
  abstract
14. THEBAULT Ph., MARZARI F., SCHOLL H., TURRINI D. & BARBIERI M., 2004
  Planetary formation in the Gamma-Cephei system.
  Astron. & Astrophys., 427, 1097
  paper
15. WALKER G., BOHLENDER D., WALKER A., IRWIN A. W., LARSON A. M., YANG S. L. S. & LARSON A., 1992
  Gamma Cephei - Rotation or planetary companion?
  ApJ. Letters, 396, L91
  abstract
16. WALKER G. A. H., WALKER A. R., IRWIN A. W., LARSON A. M., YANG S. L. S. & RICHARDSON D. C., 1995
  A search for Jupiter-mass companions to nearby stars
  Icarus, 116, 359
  paper
Other Web pages:

The star:

Distance: 11.8 pc
Spectral type: KII V
Apparent magnitude: V = 3.225
Metallicity: [Fe/H] = 0
Mass (M_sun): M =
Coordinates (2000): RA = 23 39 20.8490 DEC = +77 37 56.193
More data:
- Basic Data (from simbad )
- Most recent refs. (from ADS; enter ` HD 222404 ' in the `objects' field)

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