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J/ApJ/832/L18    Gaia's DR1 parallaxes vs previous measurements    (Jao+, 2016)

Distance-dependent offsets between parallaxes for nearby stars and Gaia DR1 parallaxes. Jao W.-C., Henry T.J., Riedel A.R., Winters J.G., Slatten K.J., Gies D.R. <Astrophys. J., 832, L18-L18 (2016)> =2016ApJ...832L..18J (SIMBAD/NED BibCode)
ADC_Keywords: Parallaxes, trigonometric ; Stars, nearby ; Proper motions ; Photometry Keywords: astrometry; solar neighborhood; stars: distances Abstract: We use 612 single stars with previously published trigonometric parallaxes placing them within 25pc to evaluate parallaxes released in Gaia's first data release (DR1). We find that the Gaia parallaxes are, on average, 0.24±0.02mas smaller than the weighted mean trigonometric parallax values for these stars in the solar neighborhood. We also find that the offset changes with distance out to 100pc, in the sense that the closer the star, the larger the offset. We find no systematic trends in the parallax offsets with stellar V magnitude, V-K color, or proper motion. We do find that the offset is roughly twice as large for stars south of the ecliptic compared to those that are north. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 139 612 Stars within 25pc with parallaxes from GAIA-DR1 and other sources
See also: I/98 : NLTT Catalogue (Luyten, 1979) I/238 : Yale Trigonometric Parallaxes, Fourth Edition (van Altena+ 1995) I/259 : The Tycho-2 Catalogue (Hog+ 2000) I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007) I/324 : The Initial Gaia Source List (IGSL) (Smart+, 2013) I/337 : Gaia DR1 (Gaia Collaboration, 2016) J/AJ/105/1571 : USNO Photographic Parallaxes IX (Harrington+ 1993) J/AJ/105/1962 : K and M stars photometry (Weis, 1993) J/A+AS/144/45 : Hipparcos astrometry for 257 stars (Fabricius+, 2000) J/AJ/130/1680 : LSPM-North proper-motion catalog nearby stars (Lepine+, 2005) J/ApJ/704/975 : Rotational velocities for M dwarfs (Jenkins+, 2009) J/MNRAS/403/1949 : UBV(RcIc)JHK photometry of HIP nearby stars (Koen+, 2010) J/AJ/142/138 : All-sky catalog of bright M dwarfs (Lepine+, 2011) J/ApJ/730/119 : HST/WFC3 obs. of Cepheids in SN Ia hosts (Riess+, 2011) J/ApJ/758/56 : Young M dwarfs within 25pc. II. Kinematics (Shkolnik+, 2012) J/A+A/546/A61 : Radial velocities for XHIP catalogue (de Bruijne+, 2012) J/ApJ/784/156 : Parallaxes for 1507 nearby M dwarfs (Dittmann+, 2014) J/AJ/149/5 : Solar neighborhood. XXXV. Dist. to M dwarfs (Winters+, 2015) J/A+A/596/A116 : Radial velocities of K-M dwarfs (Sperauskas+, 2016) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Hour of Right Ascension (J2000) 4- 5 I2 min RAm Minute of Right Ascension (J2000) 7- 11 F5.2 s RAs Second of Right Ascension (J2000) 13 A1 --- DE- Sign of the Declination 15- 16 I2 deg DEd Degree of Declination (J2000) 18- 19 I2 arcmin DEm Arcminute of Declination (J2000) 21- 24 F4.1 arcsec DEs Arcsecond of Declination (J2000) 26- 35 A10 --- Name Object Name 37- 42 I6 --- HIP ? Hipparcos identifier 44- 62 I19 --- Gaia GAIA-DR1 Source identifier 64- 68 F5.3 mas/yr mu [0.002/3.5] Proper motion 70- 74 F5.1 deg PA Position angle 76- 77 I2 --- r_mu Reference code for mu (1) 79- 83 F5.2 mag Vmag [4.6/13]? The Johnson V magnitude 85- 86 I2 --- r_Vmag ? Reference code for Vmag (1) 88- 92 F5.2 mag Kmag [2.9/13]?=99.99 The 2MASS Ks magnitude 94- 98 F5.2 mag Gmag [4.7/12.5] The GAIA G magnitude 100-106 F7.3 mas plx-w [40/299] Weighted mean parallax 108-112 F5.3 mas e_plx-w [0.1/9.4] Error in plx-w 114 I1 --- Np [1/3] Number of parallaxes 116-123 A8 --- r_plx-w Reference code for plx-w (1) 125-131 F7.3 mas plx-G [26/296] The GAIA-DR1 parallax 133-139 F7.5 mas e_plx-G [0.2/1] Error in plx-G
Note (1): Reference as follows: 1 = this work; 2 = Bessell (1990PASP..102.1181B); 3 = Dahn et al. (1988AJ.....95..237D); 4 = Dittmann et al. (2014, J/ApJ/784/156); 5 = Fabricius & Makarov (2000, J/A+AS/144/45); 6 = Harrington & Dahn (1980AJ.....85..454H); 7 = Harrington et al. (1993, J/AJ/105/1571); 8 = Hog et al. (2000A&A...355..L27H); 9 = Ianna et al. (1996AJ....111..492I); 10 = Jao et al. (2005AJ....129.1954J); 11 = Khovritchev et al. (2013MNRAS.435.1083K); 12 = Kilkenny et al. (2007MNRAS.380.1261K); 13 = Koen et al. (2010, J/MNRAS/403/1949); 14 = Riedel et al. (2010AJ....140..897R); 15 = Shkolnik et al. (2012, J/ApJ/758/56); 16 = Subasavage et al. (2009AJ....137.4547S); 17 = Weis (1987AJ.....93..451W); 18 = Weis (1988AJ.....96.1710W); 19 = Weis (1993, J/AJ/105/1962); 20 = Weis (1996AJ....112.2300W); 21 = Weis et al. (1999AJ....117.1037W); 22 = Winters et al. (2015, J/AJ/149/5); 23 = van Altena et al. (1995, I/238); 24 = Weis (1991AJ....101.1882W); 25 = Weis (1991AJ....102.1795W); 26 = Leeuwen (2007A&A...474..653V).
History: From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 01-Mar-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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