J/AJ/154/181 Radial velocities for the star HD 34445 (Vogt+, 2017)
A six-planet system around the star HD 34445.
Vogt S.S., Butler R.P., Burt J., Tuomi M., Laughlin G., Holden B.,
Teske J.K., Shectman S.A., Crane J.D., Diaz M., Thompson I.B.,
Arriagada P., Keiser S.
<Astron. J., 154, 181 (2017)>
=2017AJ....154..181V 2017AJ....154..181V (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Stars, G-type ; Exoplanets ;
Radial velocities
Keywords: planetary systems
Abstract:
We present a new precision radial velocity (RV) data set that reveals
a multi-planet system orbiting the G0V star HD 34445. Our 18-year
span consists of 333 precision RV observations, 56 of which were
previously published and 277 of which are new data from the Keck
Observatory, Magellan at Las Campanas Observatory, and the Automated
Planet Finder at Lick Observatory. These data indicate the presence of
six planet candidates in Keplerian motion about the host star with
periods of 1057, 215, 118, 49, 677, and 5700 days, and minimum masses
of 0.63, 0.17, 0.1, 0.05, 0.12, and 0.38 MJ, respectively. The HD 34445
planetary system, with its high degree of multiplicity, its long
orbital periods, and its induced stellar RV half-amplitudes in the
range 2 m/s~<K~<5 m/s is fundamentally unlike either our own solar
system (in which only Jupiter and Saturn induce significant reflex
velocities for the Sun), or the Kepler multiple-transiting systems
(which tend to have much more compact orbital configurations).
Description:
The data consist of 333 precision RVs obtained with a variety of
telescopes. Howard et al. (2010ApJ...721.1467H 2010ApJ...721.1467H) published a 12-year set
of HIRES velocities, along with a 6-year set of 50 HET velocities. To
that, we added 200 RVs obtained with the HIRES spectrometer from 1998
January 24 to 2014 August 26. The HIRES spectra used by Howard et al.
(2010ApJ...721.1467H 2010ApJ...721.1467H) were shared by the California Planet Search team
(CPS) and Lick-Carnegie Exoplanet Survey (LCES) teams before the two
teams split in late-2007.
We also obtained a set of 54 RVs with the APF and a set of 23 RVs with
the PFS. We traditionally bin our velocities over 2-hr time periods to
suppress stellar jitter. However, in the present paper, we show all of
our HIRES, APF, and PFS velocities as unbinned. To summarize, our
analysis is based on 54 APF velocities, 50 HET velocities, 200 Keck
velocities reduced with our pipeline, 6 Keck velocities reduced by
Howard et al. (2010ApJ...721.1467H 2010ApJ...721.1467H), and 23 PFS velocities.
Objects:
--------------------------------------------------
RA (ICRS) DE Designation(s)
--------------------------------------------------
05 17 40.98 +07 21 12.1 HD 34445 = HIP 24681
--------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 42 200 LCES/HIRES radial velocities for HD 34445
table3.dat 42 6 CPS/HIRES radial velocities for HD 34445
table4.dat 42 50 HET radial velocities for HD 34445
table5.dat 42 54 APF radial velocities for HD 34445
table6.dat 42 23 PFS radial velocities for HD 34445
--------------------------------------------------------------------------------
See also:
III/159 : Ca II H and K Measurements Made at MWO (Duncan+ 1991)
J/AJ/153/208 : LCES HIRES/Keck radial velocity Exoplanet Survey (Butler+, 2017)
Byte-by-byte Description of file: table[23456].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 13 F13.5 d BJD Barycentric Julian Date of observation
15- 20 F6.2 m/s RV [-34.62/29.58] Radial velocity
22- 25 F4.2 m/s e_RV [1.01/5.95] Uncertainty in RV
27- 33 F7.4 --- Sindex [0.1225/0.4032]? Mt. Wilson S-index
(Duncan et al. 1991, Cat. III/159)
(not in Tables 3 and 4)
35- 42 F8.5 --- Hindex [0.02907/0.03212]? H-index
(Gomes da Silva et al. 2011A&A...534A..30G 2011A&A...534A..30G)
(not in Tables 3,4,5)
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 24-Jul-2018