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J/AJ/154/184   Stellar properties of RV exoplanet host stars   (Wittrock+, 2017)

Exclusion of stellar companions to exoplanet host stars. Wittrock J.M., Kane S.R., Horch E.P., Howell S.B., Ciardi D.R., Everett M.E. <Astron. J., 154, 184-184 (2017)> =2017AJ....154..184W (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Spectral types ; Proper motions ; Stars, distances ; Stars, masses ; Stars, ages ; Stars, diameters ; Abundances ; Magnitudes Keywords: planetary systems - techniques: high angular resolution Abstract: Given the frequency of stellar multiplicity in the solar neighborhood, it is important to study the impacts this can have on exoplanet properties and orbital dynamics. There have been numerous imaging survey projects established to detect possible low-mass stellar companions to exoplanet host stars. Here, we provide the results from a systematic speckle imaging survey of known exoplanet host stars. In total, 71 stars were observed at 692 and 880 nm bands using the Differential Speckle Survey Instrument at the Gemini-north Observatory. Our results show that all but two of the stars included in this sample have no evidence of stellar companions with luminosities down to the detection and projected separation limits of our instrumentation. The mass-luminosity relationship is used to estimate the maximum mass a stellar companion can have without being detected. These results are used to discuss the potential for further radial velocity follow-up and interpretation of companion signals. Description: A large survey project was established to search for stellar companions to a subset of the known RV exoplanet host stars. In total, 71 stars were observed in 2014 July using the Differential Speckle Survey Instrument, or DSSI (Horch et al. 2009AJ....137.5057H); that instrument was stationed at the Gemini-north Observatory at the time of the observations. The stars were selected from the known RV exoplanet host star population where there was no known stellar companion. The DSSI used two different filters, 692 and 880 nm, to acquire the speckle images of those targets. The 692 nm filter has FWHM of 40 nm, and the 880 nm filter has FWHM of 50 nm. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 61 74 Limiting Magnitudes table1.dat 84 69 Stellar Properties of RV Exoplanet Host Stars with Null-detections I table2.dat 110 69 Stellar Properties of RV Exoplanet Host Stars with Null-detection II
See also: I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007) J/A+AS/137/451 : Radial velocities. IX. (Grenier+, 1999) J/AJ/121/2148 : Precise spectral types for 372 A, F + G stars (Gray+, 2001) J/AJ/126/2048 : NStars project: the Northern Sample. I. (Gray+, 2003) J/AJ/132/161 : NStars project: The southern sample. I. (Gray+, 2006) J/ApJ/646/523 : Exoplanet systems with stellar companions (Raghavan+, 2006) J/MNRAS/378/1141 : Chemical abundances in 31 stars with planet (Gonzalez+, 2007) J/AJ/135/209 : Rotational and radial velocities 761 HIP giants (Massarotti+, 2008) J/ApJ/680/728 : Diameters of exoplanet host stars (Baines+, 2008) J/ApJ/694/1085 : Radii of exoplanet host stars (van Belle+, 2009) J/A+A/523/A15 : HARPS XXIII: RV data for the 8 targets (Naef+, 2010) J/A+A/535/A55 : 4 stars with long-period planets (Dumusque+, 2011) J/ApJ/736/87 : Abundances in G-type stars with exoplanets (Kang+, 2011) J/A+A/545/A55 : Extrasolar planets. Radial velocities of 5 stars (Boisse+, 2012) J/MNRAS/421/2498 : Stellar companions of exoplanet host stars (Ginski+, 2012) J/A+A/549/A109 : HARPS XXXI. The M-dwarf sample (Bonfils+, 2013) J/A+A/556/A150 : SWEETCat I. Stellar parameters for host stars (Santos+, 2013) J/ApJ/766/9 : GALEX observations of exoplanet host stars (Shkolnik, 2013) J/A+A/562/A71 : Chemical abundances of solar neighbourhood dwarfs (Bensby+, 2014) J/A+A/575/A18 : Revising the ages of planet-hosting stars (Bonfanti+, 2015) J/A+A/576/A94 : Northern bright planet host stars parameters (Sousa+, 2015) J/A+A/579/A20 : Circumstellar debris discs (Maldonado+, 2015) J/ApJ/804/64 : Empirical and model parameters of 183 M dwarfs (Mann+, 2015) J/A+A/585/A5 : Exoplanet hosts/field stars age consistency (Bonfanti+, 2016) J/ApJ/830/46 : Radial velocities of 3 Neptune-mass planet hosts (Fulton+, 2016) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Star Star name 12- 17 F6.2 AU Rin [0.31/263.16] Inner exclusion radius 19- 25 F7.2 AU Rout [8.7/7368.42] Outer exclusion radius 27- 30 F4.2 mag Dm0.1(692) [1.85/4.75] 5σ limiting magnitude (Δm) at 0.1", at 692 nm 32- 35 F4.2 mag Dm0.2(692) [3.18/5.39] 5σ limiting magnitude (Δm) at 0.2", at 692 nm 37- 40 F4.2 mag Dm0.1(880) [2.74/4.73] 5σ limiting magnitude (Δm) at 0.1", at 880 nm 42- 45 F4.2 mag Dm0.2(880) [3.66/5.34] 5σ limiting magnitude (Δm) at 0.2", at 880 nm 47- 51 F5.2 mag DM [-1.03/13.61] Distance modulus 53- 56 F4.2 Msun M*(692) [0/2.58] Maximum stellar mass of a hypothetical companion, at 692 nm 58- 61 F4.2 Msun M*(880) [0/2.29] Maximum stellar mass of a hypothetical companion, at 880 nm
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Star Star name 12- 17 A6 --- SpType MK spectral type 19- 25 F7.4 mag Vmag [4.2992/10.5759] Apparent V band magnitude 27- 34 F8.2 mas/yr pmRA [-1227.67/1130.27] Proper motion along RA (µαcosδ) 36- 42 F7.2 mas/yr pmDE [-773.02/853.63] Proper motion along DE (µδ) 44- 49 F6.2 mas Plx [0.19/160.91] Parallax 51- 54 F4.2 mas e_Plx [0/7.8] Uncertainty in Plx 56- 62 F7.2 pc Dist [6.21/5263.16] Distance 64- 71 F8.2 pc e_Dist [0/19944.6] Uncertainty in Dist 73 I1 --- Npl [1/3] Number of exoplanet(s) the star hosts 75- 84 A10 --- Ref Reference(s) (1)
Note (1): Reference as follows: 1 = Boisse et al. (2012, J/A+A/545/A55); 2 = Bonfils et al. (2005A&A...443L..15B); 3 = Bonfils et al. (2013, J/A+A/549/A109); 4 = Dumusque et al. (2011, J/A+A/535/A55); 5 = Endl et al. (2004ApJ...611.1121E); 6 = ESA (1997, Cat. I/239); 7 = Fischer et al. (2002PASP..114..529F); 8 = Fischer et al. (2003ApJ...586.1394F); 9 = Fischer et al. (2006ApJ...637.1094F); 10 = Gettel et al. (2012ApJ...745...10B); 11 = Giguere et al. (2012ApJ...744....4G); 12 = Giguere et al. (2015ApJ...799...89G); 13 = Gray et al. (2001, J/AJ/121/2148); 14 = Gray et al. (2003, J/AJ/126/2048); 15 = Gray et al. (2006, J/AJ/132/161); 16 = Grenier et al. (1999, J/A+AS/137/451); 17 = Hatzes et al. (2005A&A...437..743H); 18 = Hog et al. (2000A&A...355L..27H); 19 = Johnson et al. (2007ApJ...665..785J); 20 = Johnson et al. (2008ApJ...675..784J); 21 = Kidger et al. (2003RMxAC..16..287K); 22 = Lee et al. (2013A&A...549A...2L); 23 = Naef et al. (2010, J/A+A/523/A15); 24 = Niedzielski et al. (2007ApJ...669.1354N); 25 = Niedzielski et al. (2009ApJ...707..768N); 26 = Robertson et al. (2012ApJ...749...39R); 27 = Santos et al. (2007A&A...474..647S); 28 = Santos et al. (2013, J/A+A/556/A150); 29 = Santos et al. (2015A&A...580L..13S); 30 = Sato et al. (2009ApJ...703..671S); 31 = Sato et al. (2010PASJ...62.1063S); 32 = van Belle & von Braun (2009, J/ApJ/694/1085); 33 = van Leeuwen (2007, Cat. I/311); 34 = Vogt et al. (2000ApJ...536..902V); 35 = von Braun et al. (2014MNRAS.438.2413V); 36 = Zacharias (2004AN....325..631Z).
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Star Star name 12- 16 F5.3 Msun M* [0.306/2.3] Stellar mass 18- 22 F5.3 Msun e_M* [0.003/0.4] Uncertainty in M* 24- 30 F7.4 Rsun R* [0.299/51.1]? Stellar radius 32- 37 F6.4 Rsun e_R* [0/9.5]? Uncertainty in R* 39- 47 F9.5 Lsun L* [0.01146/621.3]? Stellar luminosity 49- 57 F9.5 Lsun e_L* [0/211.7]? Uncertainty in L* 59- 62 I4 K Teff [3457/6211] Effective temperature 64- 66 I3 K e_Teff [11/242] Uncertainty in Teff 68- 72 F5.3 [cm/s2] logg [1.1/4.96] Surface gravity 74- 78 F5.3 [cm/s2] e_logg [0.01/0.61] Uncertainty in logg 80- 85 F6.3 Gyr Age [0.9/10.2]? Age 87- 91 F5.3 Gyr e_Age [0.1/4.5]? Uncertainty in Age 93- 97 F5.2 [-] [Fe/H] [-0.62/0.5] Metallicity 99-103 F5.3 [-] e_[Fe/H] [0.01/0.25] Uncertainty in [Fe/H] 105-110 A6 --- Ref Reference(s) (1)
Note (1): Reference as follows: 1 = Bensby et al. (2014, J/A+A/562/A71); 2 = Bonfanti et al. (2015, J/A+A/575/A18); 3 = Bonfanti et al. (2016, J/A+A/585/A5); 4 = Fulton et al. (2016, J/ApJ/830/46); 5 = Gettel et al. (2012ApJ...745...10B); 6 = Giguere et al. (2015ApJ...799...89G); 7 = Gonzalez & Laws (2007, J/MNRAS/378/1141); 8 = Jofre et al. (2015A&A...574A..46P); 9 = Kang et al. (2011, J/ApJ/736/87); 10 = Lee et al. (2013A&A...549A...2L); 11 = Maldonado et al. (2015, J/A+A/579/A20); 12 = Mann et al. (2015, J/ApJ/804/64); 13 = Massarotti et al. (2008, J/AJ/135/209); 14 = McCarthy & Wilhelm (2014AJ....148...70M); 15 = Santos et al. (2013, J/A+A/556/A150); 16 = Sousa et al. (2015, J/A+A/576/A94); 17 = Spina et al. (2016A&A...585A.152S).
History: From electronic version of the journal
(End) Tiphaine Pouvreau [CDS] 20-Jul-2018
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