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J/AJ/136/452        Astrometric studies of GAT stars         (Gatewood, 2008)

Astrometric studies of Aldebaran, Arcturus, Vega, the Hyades, and other regions. Gatewood G. <Astron. J., 136, 452-460 (2008)> =2008AJ....136..452G
ADC_Keywords: Associations, stellar ; Parallaxes, trigonometric ; Proper motions Keywords: stars: individual (81 Cancri, Aldebaran, Arcturus, Hyades, Ross 248, Vega) Abstract: The results of astrometric studies in the regions of Groombridge 34A, the Hyades, Aldebaran, Ross 47, BD+5 1668, 81 Cancri, BD+15 2620, Arcturus, Vega, and Ross 248 are presented. Estimates of the absolute parallax of each star are presented and a mass estimate is present for 81 Cancri. Comments include the discussion of the apparent motions of a few previously suggested planetary systems. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 56 97 Adjustment to weighted absolute parallax table2.dat 97 128 Star parameters table3.dat 31 53 Number cross index
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- GAT [877/1366] Allegheny Observatory catalog star number 6- 11 A6 --- SpType Adopted spectral class 13- 17 F5.2 mas plx Spectroscopic parallax 19- 22 F4.2 mas e_plx rms uncertainty on plx 24- 28 F5.2 mas plxP Provisional parallax 30- 33 F4.2 mas e_plxP rms uncertainty on plxP 35- 39 F5.2 mas Wadj Weighted adjustment 41- 44 F4.2 --- Weight Weight 46- 50 F5.2 mas plxO Observed parallax 52- 56 F5.2 mas Diff Difference, plx-plxO
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 4 I4 --- GAT [877/1366] Allegheny Observatory catalog star number 6 I1 --- Dev Device number (unexplained) 8- 12 F5.2 mag Vmag V magnitude 14- 18 F5.2 mag B-V B-V colour index 20- 24 F5.1 mas plx Parallax 26- 28 F3.1 mas e_plx rms uncertainty on plx 30- 31 I2 h RAh Right ascension (J2000, Ep=J2000) 33- 34 I2 min RAm Right ascension (J2000, Ep=J2000) 36- 43 F8.5 s RAs Right ascension (J2000, Ep=J2000) 45- 53 F9.6 s/yr pmRA Proper motion along RA at epoch J2000 55 A1 --- DE- Declination sign (J2000, Ep=J2000) 56- 57 I2 deg DEd Declination (J2000, Ep=J2000) 59- 60 I2 arcmin DEm Declination (J2000, Ep=J2000) 62- 68 F7.4 arcsec DEs Declination (J2000, Ep=J2000) 70- 77 F8.5 arcsec/yr pmDE Proper motion along DE at epoch J2000 79- 82 F4.2 ms e_RAs rms uncertainty on RA at epoch J2000 84- 88 F5.3 ms/yr e_pmRA rms uncertainty on pmRA at epoch J2000 90- 92 F3.1 mas e_DEs rms uncertainty on DE at epoch J2000 94- 97 F4.2 mas/yr e_pmDE rms uncertainty on pmDE at epoch J2000
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 4 I4 --- GAT Allegheny Observatory catalog star number 9- 14 I6 --- HD ? HD number 17- 24 A8 --- BD BD number 26- 31 I6 --- HIP ? HIP number
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 04-Feb-2011
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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