ARIHIP astrometric catalogue 2010-11-03T10:13:00 1000 The catalogue ARIHIP has been constructed by selecting the 'best data' for a given star from combinations of HIPPARCOS data with Boss' GC and/or the Tycho-2 catalogue as well as the FK6. It provides 'best data' for 90 842 stars with a typical mean error of 0.89 mas/year (about a factor of 1.3 better than Hipparcos for this sample of stars). Wielen, R.; Schwan, H.; Dettbarn, C.; Lenhardt, H.; Jahreiß, H.; Jährling, R; Khalisi, E. Catalog stars catalogs astrometry proper-motions Optical 0/0-11 2.721e-19 4.138e-19 1989-09-01 1993-08-15 The ARIHIP Catalogue is a suitable combination of the results of the HIPPARCOS astrometry satellite with ground-based data. The ARIHIP contains 90842 stars in total. The best astrometric data for 90072 of these ARIHIP stars have been selected from the direct solutions given in the combination catalogues FK6(I), FK6(III), GC+HIP, and TYC2+HIP. Such direct solutions are appropriate for single stars or for objects which can be treated like single stars. For these 90072 stars with direct solutions, ground-based measurements have contributed to the astrometric data (mainly to the proper motions). In addition the ARIHIP contains the original HIPPARCOS solutions for 770 stars which do not occur in one of these combination catalogues but are basically qualified for direct solutions. Besides the astrometric data, the ARIHIP provides a variety of flags which inform about the known (or possible) binarity of each object. From the 90842 stars in the ARIHIP we have selected 73023 objects as "astrometrically excellent stars", since their instantaneous proper motions and mean (time-averaged) ones do not differ significantly. Hence most of the astrometrically excellent stars are well-behaving "single-star candidates" with good astrometric data. These stars are most suited for high-precision astrometry. On the other hand, 2827 of the stars in the ARIHIP are Δμ binaries in the sense of Wielen et al. (1999). Many of them are newly discovered probable binaries with no other hitherto known indication of binarity. The ARIHIP gives, besides the classical "single-star mode" solutions (SI mode), other solutions which take into account the fact that hidden astrometric binaries among "apparently single-stars" introduce sizable "cosmic errors" into the quasi-instantaneously measured HIPPARCOS proper motions and positions. The ARIHIP gives in addition to the SI mode the "long-term prediction (LTP) mode" and the "short-term prediction (STP) mode". These LTP and STP modes are on average the most precise solutions for apparently single stars, depending on the epoch difference with respect to the HIPPARCOS epoch of about 1991. The typical mean error of an ARIHIP proper motion in the single-star mode is 0.89 mas/year. This is about a factor of 1.3 better than the typical HIPPARCOS errors for these stars of 1.13 mas/year. In the long-term prediction mode, in which cosmic errors are taken into account, the ARIHIP proper motions have a typical mean error of 1.15 mas/year, which is by a factor of more than 1.6 better than the corresponding error for the HIPPARCOS values of 1.89 mas/year (cosmic errors included). 2001VeARI..40....1W mname, racols, decols, pmracols, pmdecols, tracols, errracols, errpmracols, tdecols, errdecols, errpmdecols LTP, 224-233, 276-285, 328-335, 383-390, 438-444, 478-483, 514-518, 554-560, 594-599, 630-634 STP, 237-246, 289-298, 339-346, 394-401, 448-454, 487-492, 522-526, 564-570, 603-608, 638-642 HIP, 250-259, 302-311, 350-357, 405-412, 458-464, 496-501, 530-534, 574-580, 612-617, 646-650 mname, parallaxcols, errparcols SI, 670-677, 703-708 STP, 681-688, 712-717 HIP, 692-699, 721-726 short,shortind,explanat,range fh, FH, FK5 proper motions vs. Hipparcos,830-835 f0h, 0H, original catalogue positions vs. Hipparcos,839-844 f0gch,0GCH, GC positions vs. Hipparcos,848-853 0f, 0F, FK5 and Hipparcos positions vs. FK5 proper motions, 857-862 t2h, T2H, Tycho2 and Hipparcos proper motions,866-871 //scs#pgs-pos-index Position ICRS Epoch J2000.0 "raj2000" "dej2000" Error "err_ra" "err_de" Velocity "pmra" "pmde" Error "err_pmra" "err_pmde" Position ICRS Epoch J2000.0 "raHIP" "deHIP" Error "err_raHIP" "err_deHIP" Velocity "pmraHIP" "pmdeHIP" Error "err_pmraHIP" "err_pmdeHIP" Position ICRS Epoch J2000.0 "raSTP" "deSTP" Error "err_raSTP" "err_deSTP" Velocity "pmraSTP" "pmdeSTP" Error "err_pmraSTP" "err_pmdeSTP" Position ICRS Epoch J2000.0 "raLTP" "deLTP" Error "err_raLTP" "err_deLTP" Velocity "pmraLTP" "pmdeLTP" Error "err_pmraLTP" "err_pmdeLTP" The srcSel field indicates which catalogue the astrometric solution was taken from using the following codes: === ========================================= F61 Part I of the FK6 (Wielen et al. 1999d) F63 Part III of the FK6 (Wielen et al. 2000a) GCH GC+HIP Catalogue (Wielen et al. 2001b) T2H TYC2+HIP Catalogue (Wielen et al. 2001c) HIP HIPPARCOS Catalogue (ESA 1997) === ========================================= The Km flag indicates the variability of the source and is taken from the HIPPARCOS catalogue. The codes denote: ===== =============================================== empty star not variable 1 star variable at the level of < 0.06 mag 2 star variable at the level of 0.06 - 0.6 mag 3 star variable at the level of > 0.6 mag ===== =============================================== The column Kbin describes the multiplicity of the object. In consists of up to two digits. The first digit describes the evidence for the multiplicity of the object based on proper-motion differences. For details on the method and the various test parameters F see Wielen et al (1999a). +---+---------------------------------------------------------+ | 1 | all values of F (F_{FH}, F_{0H}, F_{0(GC)H}, F_{0F}, | | | F_{TH}) are below 2.49 | +---+---------------------------------------------------------+ | 2 | at least one value of F (F_{FH}, F_{0H}, F_{0(GC)H}, | | | F_{0F}, F_{TH}) is larger than 3.44 | +---+---------------------------------------------------------+ | 3 | all other (intermediate) cases | +---+---------------------------------------------------------+ | | empty means no F value(s) are available | +---+---------------------------------------------------------+ The second digit gives evidence for the multiplicity of the object based on non-PM methods. If the data indicate various kinds of binarity, the 'astrometrically most disturbing' effect is given. : 1 single star indicated 2 the star is a member of a visual binary (gravitationally bound system), or the object is resolved by speckle interferometry 3 the object is suspected to be a visual binary (mainly due to HIP) 4 the star has at least one optical companion with a separation of rho < 60" 5 the star has at least one optical companion, but all companions have a separation of rho <= 60" 6 astrometric binary (mainly the non-standard solutions O, G, V, X of HIP) 7 spectroscopic binary with a known orbit, or the star is an eclipsing binary 8 the radial velocity of the star is variable (indicating a spectroscopic binary), or the object shows a composite spectrum (indicating a double star) 9 the radial velocity of the star may be variable (possible indication for a spectroscopic binary), or the object may show a composite spectrum (possibly indicating a double star), or other weak indications of binarity, or the star has a (suspected) planetary companion data/data.txt.gz hipno: 3-8 srcSel: 47-49 alphaHMS: 59-73 deltaDMS: 77-91 pmra_mas: 95-103 pmde_mas: 107-115 t_ra_mod: 119-123 err_ra_mas:127-131 err_pmra_mas:135-139 t_de_mod: 143-147 err_de_mas:151-155 err_pmde_mas:159-163 parallax_mas:167-172 e_parallax_mas:176-180 kp: 184 vrad: 188-195 mv: 199-203 km: 207 kbin: 211-212 kdmu: 216 kae: 220 flags: 882-901 \racols \decols \pmracols \pmdecols \tracols \errracols \errpmracols \tdecols \errdecols \errpmdecols \parallaxcols \errparcols \range hmsToDeg(@alphaHMS, None) dmsToDeg(@deltaDMS, None) float(killBlanks(@pmra_mas))/3600000. float(killBlanks(@pmde_mas))/3600000. float(@t_ra_mod)+1900 float(@err_ra_mas)/3600000. float(@err_pmra_mas)/3600000. float(@t_de_mod)+1900 float(@err_de_mas)/3600000. float(@err_pmde_mas)/3600000. float(@parallax_mas)/3600000. float(@e_parallax_mas)/3600000. arihip cone 9.4076 9.6414 1.0 data cone/form self.assertHasStrings("PM RA (STP)", "1.0890086361", "-5.00", "Note bin") cone/scs.xml row = self.getFirstVOTableRow() self.assertEqual(row["flags"], 's 00 .. .... ... ...') self.assertAlmostEqual(row["err_parallaxSI"], 5.25e-07) self.assertEqual(row["hipno"], '8')