J/ApJ/743/184 Pan-Pacific Planet Search (PPPS) I. 7 CMa (Wittenmyer+, 2011)
The Pan-Pacific Planet Search.
I. A giant planet orbiting 7 CMa.
Wittenmyer R.A., Endl M., Wang L., Johnson J.A., Tinney C.G., O'Toole S.J.
<Astrophys. J., 743, 184 (2011)>
=2011ApJ...743..184W 2011ApJ...743..184W
ADC_Keywords: Radial velocities ; Stars, giant ; Surveys ; Planets
Keywords: planetary systems - stars: individual (HD 47205) -
techniques: radial velocities
Abstract:
We introduce the Pan-Pacific Planet Search, a survey of 170 metal-rich
Southern Hemisphere subgiants using the 3.9m Anglo-Australian
Telescope. We report the first discovery from this program, a giant
planet orbiting 7 CMa (HD 47205) with a period of 763±17 days,
eccentricity e=0.14±0.06, and msin i=2.6±0.6MJup. The host star
is a K giant with a mass of 1.5±0.3M☉ and metallicity
[Fe/H]=0.21±0.10. The mass and period of 7 CMa b are typical of
planets which have been found to orbit intermediate-mass stars
(M*>1.3M☉). Hipparcos photometry shows this star to be stable
to 0.0004 mag on the radial-velocity period, giving confidence that
this signal can be attributed to reflex motion caused by an orbiting
planet.
Description:
The "Pan-Pacific Planet Search" (PPPS) originated as a Southern
Hemisphere extension of the established Lick & Keck Observatory survey
for planets orbiting Northern "retired A stars" (Johnson et al.
2006ApJ...652.1724J 2006ApJ...652.1724J, 2007ApJ...665..785J 2007ApJ...665..785J, 2010PASP..122..905J 2010PASP..122..905J). This
program is using the 3.9m Anglo-Australian Telescope (AAT) to observe
a metal-rich sample of Southern Hemisphere subgiants. Observations for
the PPPS began at the AAT in 2009 February. Observing time is
scheduled such that each target should receive 4-6 observations per
year. PPPS Doppler measurements are made with the UCLES echelle
spectrograph (at the 3.9m AAT) which achieves a resolution of 45000
with a 1 arcsec slit.
We have observed 7 CMa on 21 epochs, and an iodine-free template
observation was obtained on 2010 January 30. Since 7 CMa is an
extremely bright star, exposure times ranged from 100 to 500s, with a
resulting S/N of ∼200-300/pixel each epoch. The data span a total
of 917 days and have a mean internal velocity uncertainty of 6.5m/s.
Objects:
-------------------------------------------------------
RA (2000) DE Designation(s) (Period)
-------------------------------------------------------
06 36 41.04 -19 15 21.2 7 CMa = HD 47205 (P=763)
-------------------------------------------------------
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 37 138 Pan-Pacific Planet Search target list
table3.dat 24 21 Anglo-Australian Telescope (AAT) radial
velocities for 7 CMa (HD 47205)
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See also:
III/254 : Radial Velocities with Astrometric Data II (Kharchenko+, 2007)
III/252 : Pulkovo radial velocities for 35493 HIP stars (Gontcharov, 2006)
III/244 : Catalog of Stellar Rotational Velocities (Glebocki+ 2005)
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
J/A+A/546/A61 : Radial velocities for XHIP catalogue (de Bruijne+, 2012)
J/AJ/135/209 : HIP giants rotational & radial velocities (Massarotti+, 2008)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- HD Star identification number (; except
for "HIP50638")
10- 11 I2 h RAh Hour of Right Ascension (J2000)
13- 14 I2 min RAm Minute of Right Ascension (J2000)
16- 20 F5.2 s RAs Second of Right Ascension (J2000)
22 A1 --- DE- Sign of the Declination (J2000)
23- 24 I2 deg DEd Degree of Declination (J2000)
26- 27 I2 arcmin DEm Arcminute of Declination (J2000)
29- 32 F4.1 arcsec DEs Arcsecond of Declination (J2000)
34- 37 F4.2 mag Vmag The V band magnitude from Hipparcos (Cat. I/239)
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Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.5 d JD Julian Date of observation (JD-2400000)
13- 18 F6.2 m/s RV Radial velocity
20- 24 F5.2 m/s e_RV RV uncertainty
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History:
From electronic version of the journal
References:
Wittenmyer et al., Paper II 2015ApJ...800...74W 2015ApJ...800...74W
Wittenmyer et al., Paper III 2016MNRAS.455.1398W 2016MNRAS.455.1398W
Wittenmyer et al., Paper IV 2016ApJ...818...35W 2016ApJ...818...35W
Wittenmyer et al., Paper V 2016AJ....152...19W 2016AJ....152...19W, Cat. J/AJ/152/19
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 21-May-2013