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')