Astronomy
Astronomical Data
XHIP: An Extended Hipparcos Compilation is available at: http://cdsarc.u-strasbg.fr/viz-bin/Cat?cat=XHIP V/137 Extended Hipparcos Compilation (Anderson+, 2011)...
XHIP: An Extended Hipparcos Compilation
is available at:
http://cdsarc.u-strasbg.fr/viz-bin/Cat?cat=XHIP
V/137 Extended Hipparcos Compilation (Anderson+, 2011)
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XHIP: An Extended Hipparcos Compilation
Anderson E., Francis, C.
=2011AstL...##..###A
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ADC_Keywords: Stars, bright ; Combined data ; Cross identifications ;
Positional data ; Parallaxes, trigonometric ; Proper motions ;
Stars, distances ; Spectral types ; Radial velocities ;
Abundances, [Fe/H] ; Stars, ages ; Space velocities ;
Milky Way; Clusters, open; Associations, stellar;
Photometry UBVRI ; Photometry, infrared
Keywords: astrometry; spectrography; radial velocities; spectral
classifications; iron abundances; photometry; solar neighborhood;
kinematics; open clusters; stellar associations; exoplanets;
photometry
Description:
The Extended Hipparcos Compilation (XHIP) cross-references the New
Hipparcos Reduction (HIP2, Cat. I/311) with relatable data from a
broad survey of presently available sources. The resulting collection
uniquely assigns 116,096 spectral classifications, 46,392 radial
velocities, and 19,097 iron abundances [Fe/H] to Hipparcos stars.
Stellar classifications from SIMBAD and indications of multiplicity
from either CCDM (Cat. I/274) or WDS (Cat. B/wds) are provided.
Parameters for solar encounters and Galactic orbits are calculated for
a subset of stars that can be made kinematically complete.
Memberships in open clusters and stellar associations are assigned.
We also provide stellar ages from The Geneva-Copenhagen survey of the
Solar neighbourhood III (Cat. V/130), identifications of exoplanet
host stars, and supplemental photometry from 2MASS (Cat. II/246) and
SIMBAD.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
main.dat 416 117955 Astrometry, spectrography, space motions, exoplanets
photo.dat 235 117955 Photometry
biblio.dat 369 117955 References
refs.dat 23 674 Reference key for r_RV & r_[Fe/H]
groups.dat 201 83 Statistics on open clusters and stellar associations
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See also:
I/239 : The Hipparcos and Tycho Catalogues
I/274 : Catalog of Components of Double & Multiple stars
I/311 : Hipparcos, the New Reduction
II/246 : 2MASS All-Sky Catalog of Point Sources
III/252 : Pulkovo radial velocities for 35,493 HIP stars
V/130 : Geneva-Copenhagen Survey of Solar neighbourhood III
B/mk : Catalogue of Stellar Spectral Classifications
B/ocl : Optically visible open clusters and Candidates
B/pastel : The PASTEL catalogue of stellar atmospheric parameters
B/wds : The Washington Visual Double Star Catalog
J/A+A/477/165 : Tidal radii and masses of open clusters
Byte-by-byte Description of file: main.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP Hipparcos identifier
8- 13 A6 --- Comp Component(s) (1)
15- 55 A41 --- Classes SIMBAD classifications (comma separated) (2)
57 I1 --- Groups Cluster or Association membership(s) (3)
59- 70 F12.8 deg RAdeg Right ascension (ICRS, Epoch=J1991.25)
72- 83 F12.8 deg DEdeg Declination (ICRS, Epoch=J1991.25)
85- 90 F6.2 mas Plx Trigonometric parallax
92- 99 F8.2 mas/yr pmRA Proper motion in RA*cos(DEdeg)
101-108 F8.2 mas/yr pmDE Proper motion in Declination
110-115 F6.2 mas e_RA Standard error on RA*cos(DEdeg)
117-122 F6.2 mas e_DE Standard error on DE
124-129 F6.2 mas e_Plx Standard error on Plx
131-136 F6.2 mas/yr e_pmRA Standard error on pmRA
138-142 F5.2 mas/yr e_pmDE Standard error on pmDE
144 I1 --- r_HIP Reference for Hipparcos astrometry (4)
146 I1 --- r_pm Reference for proper motion (5)
148-159 F12.8 deg GLON Galactic longitude (6)
161-172 F12.8 deg GLAT Galactic latitude (6)
174-180 F7.2 pc Dist Heliocentric distance (7)
182-185 F4.1 --- e%_Dist Distance error expressed as percentage (8)
187-194 F8.2 mas/yr pmGLON Proper motion in GLON*cos(GLAT)
196-203 F8.2 mas/yr pmGLAT Proper motion in GLAT
205-210 F6.1 pc X Heliocentric distance towards Gal. center
212-218 F7.1 pc Y Heliocentric distance towards Gal. rotation
220-225 F6.1 pc Z Heliocentric distance towards N. Gal. Pole
227-230 I4 pc RGal Galactocentric distance (9)
232-236 F5.1 km/s vT Transverse velocity
238-263 A26 --- SpType Spectral type (MK, HD, or other)
265-267 I3 --- Tc Temperature class of SpType codified (10)
269 I1 --- Lc Luminosity class of SpType codified (11)
271-277 F7.2 km/s RV Radial velocity
279-284 F6.2 km/s e_RV Standard error on RV (12)
286 A1 --- q_RV Quality flag on RV (13)
288-292 F5.2 dex [Fe/H] Iron abundance
294-297 F4.2 dex e_[Fe/H] Standard error on [Fe/H] (14)
299 A1 --- q_[Fe/H] Quality flag on [Fe/H] (15)
301-304 F4.1 Gyr age Age, in billions of years
306-309 F4.1 Gyr clage Lower confidence limit on age
311-314 F4.1 Gyr chage Upper confidence limit on age
316-321 F6.1 km/s U Heliocentric velocity towards Gal. center
323-328 F6.1 km/s V Heliocentric velocity towards Gal. rotation
330-335 F6.1 km/s W Heliocentric velocity towards N. Gal. Pole
337-341 F5.1 km/s UVW Total heliocentric velocity
343-349 F7.2 pc Dmin Minimum distance at solar encounter (16)
351-355 I5 kyr Tmin Timing of Dmin, in thousands of years (17)
357-362 F6.4 --- ecc Total orbital eccentricity (18)
364-369 F6.1 --- phi Pericenter position angle (18)
371-376 I6 --- a Semi-major axis of orbit (18)
378-382 I5 --- b Semi-minor axis of orbit (18)
384-389 I6 --- c Focus-to-center distance of orbit (18)
391-395 I5 deg L Semilatus rectum of orbit (18)
397-400 I4 pc Rmin Orbital radius at pericenter (18)
402-408 I7 pc Rmax Orbital radius at apocenter (18)
410 I1 pc planets Number of exoplanets
412-416 A5 pc methods Exoplanet discovery method(s) (19)
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Note (1) on Comp: from CCDM (Cat. I/274) or WDS (Cat. B/wds)
Note (2) on Classes: see:
http://simbad.u-strasbg.fr/simbad/sim-display?data=otypes
Note (3) on Group: Group IDs are in biblio.dat (GrpNames)
see also: groups.dat and Cat. B/Ocl
Note (4) on r_Hip: flag indicates astrometry source:
1 : HIP (Cat. I/239) for 3,504 problematic cases in HIP2
2 : HIP2 (Cat. I/311) for all remaining cases
Note (5) on r_pm: flag indicates the following:
1 : From HIP2 (Cat. I/311)
2 : From Tycho-2 (Cat. I/259)
3 : HIP2 & Tycho-2 combined for improved error bounds
Note (6) on GLAT, GLON: tranformation from ICRS defined by:
NGP RAdeg = 192.85948
NGP DEdeg = +27.12825
GLON of ascending node @ celestial equator = 32.93192 deg
Note (7) on Dist: null where parallax errors <20%
Dist = 1000 / Plx * (1 + 1.2 * (e_Plx / Plx)^2)
Note (8) on e_Dist: null where Dist is fitted to cluster
Note (9) on Rgal: adopts Sgr A* (X, Y, Z) as (7,400, -7.2, -6.0) pc
Note (10) on Tc: O=10 B=20 A=30 F=40 G=50 K=60 M=70
L=80 T=90 S=100 C=110 R=120 N=130
Subclasses 0-9 are additionally summed.
Note (11) on Lc: I=1 II=2 III=3 IV=4 V=5 VI=6
Note (12) on e_RV: 999 = error not available though RV is available
Note (13) on q_RV: A = Most likely to be within stated error bounds
B = May have small systmatic errors
C = May have larger systematic errors
D = No error available or other serious problems
Note (14) on e_[Fe/H]: 9.99 = error not available though [Fe/H] is available
Note (15) on q_[Fe/H]: A = Calibrated
B = Calibrated, but no error bounds assigned
C = Ucalibrated and no error bounds assigned
Note (16) on Dmin: based on linear approximation to space motion
Note (17) on Tmin: Past times are negative; future times positive
Note (18) on Orbital Parameters: LSR (U, V, W)=(14.0, 14.5, 6.9) km/s are
adopted. Note (9) above with regard to Rgal also applies.
Note (19) On Exoplanet discovery method(s):
RA : "radial velocity or astrometric methods"
I : "imaging"
T : "timing"
X : "transit"
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Byte-by-byte Description of file: photo.dat
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Bytes Format Units Label Explanations
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1- 6 I6 pc HIP Hipparcos identifier
8- 14 F7.4 --- Hpmag Median magnitude in Hipparcos system
16- 21 F6.4 --- e_Hpmag Standard error on Hpmag
23 A1 --- m_Hpmag [A-Z-] Reference flag for Hpmag (20)
25- 29 F5.2 mag Hpmax Hpmag at maximum (5th percentile)
31- 35 F5.2 mag Hpmin Hpmag at minimum (95th percentile)
37- 42 F6.2 --- Per Variability period
44 A1 mag HvarType [CDMPRU] Variability type (21)
46- 51 F6.3 mag Umag Apparent magnitude in Johnson U
53- 58 F6.3 days Bmag Apparent magnitude in Johnson B
60- 64 F5.2 --- Vmag Apparent magnitude in Johnson V
66- 70 F5.2 mag Rmag Apparent magnitude in R
72- 77 F6.3 mag Imag Apparent magnitude in I
79- 84 F6.3 mag Jmag J selected default magnitude (22)
86- 91 F6.3 mag Hmag H selected default magnitude (22)
93- 98 F6.3 mag Kmag K selected default magnitude (22)
100-104 F5.3 mag e_Jmag J total magnitude uncertainty (22)
106-110 F5.3 mag e_Hmag H total magnitude uncertainty (22)
112-116 F5.3 mag e_Kmag K total magnitude uncertainty (22)
118-134 A17 mag 2MASS 2MASS source designation (22)
136-138 A3 mag q_JHK JHK photometric quality flag (22)
140-145 F6.3 mag B-V Johnson B-V color index
147-151 F5.2 --- V-I Color index in Cousins' system
153-157 F5.3 --- e_B-V Standard error on B-V
159-162 F4.2 mag e_V-I Standard error on V-I
164-169 F6.3 mag Hp_Mag Absolute Magnitude of Hpmag (23)
171-176 F6.3 mag U_Mag Absolute Magnitude in Johnson U (23)
178-182 F5.2 mag B_Mag Absolute Magnitude in Johnson B (23)
184-188 F5.2 Lsun V_Mag Absolute Magnitude in Johnson V (23)
190-194 F5.2 mag R_Mag Absolute Magnitude in R (23)
196-200 F5.2 mag I_Mag Absolute Magnitude in I (23)
202-206 F5.2 mag J_Mag Absolute Magnitude J (23)
208-212 F5.2 mag H_Mag Absolute Magnitude H (23)
214-219 F6.2 mag K_Mag Absolute Magnitude K (23)
221-229 F9.2 mag Lum Stellar luminosity (23)
231-235 F5.2 mag magmin Apparent magnitude V at Tmin (main.dat)
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Note (20) on m_Hpmag: this flag indicates for double or multiple entries:
A to Z : the letter indicates the specified component measured
* : combined Hpmag of a double system, corrected for attenuation
- : combined Hpmag of a multiple system, not corrected for attenuation
Note (21) on HvarType: Hipparcos-defined type of variability (a blank entry
signifies that the entry could not be classified as variable or constant):
C : no variability detected ("constant")
D : duplicity-induced variability
M : possibly micro-variable (amplitude < 0.03mag)
P : periodic variable
R : V-I colour index was revised due to variability analysis
U : unsolved variable which does not fall in the other categories
Note (22) on 2MASS photometry: See Cat. II/246
Note (23) on Absolute magnitudes & Luminosity: does not factor absorption
by the interstellar medium; may also contain integrated components.
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Byte-by-byte Description of file: biblio.dat
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Bytes Format Units Label Explanations
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1- 6 I6 mag HIP Hipparcos identifier
8- 10 A3 mag Con Constellation membership
12- 15 I4 mag Atlas Millennium Star Atlas page number
17- 26 A10 --- Coords RA, DE in compact format; n = + ; s = -
28- 75 A48 --- Name Star name(s)
77-182 A106 --- GrpNames Cluster or Association name(s)
184-199 A16 --- r_Comp Reference for Comp (main.dat)
201-225 A25 --- r_SpType Reference for SpType (main.dat) (24)
227-241 A15 --- r_RV Reference for RV (main.dat) (25)
243-369 A127 --- r_[Fe/H] Reference(s) for [Fe/H] (main.dat) (25)
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Note (24) on r_SpType: BibCodes "1993BICDS..43....5T" & "2003AJ....125..359W"
are augmented (after a colon) with the content of the r_Sp or r_SpType
columns from those sources respectively.
Note (25) on r_RV and r_[Fe/H]: See keycodes.dat
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- KeyCode 3-digit shorthand code (biblio.dat) (26)
4- 23 A19 --- BibCode Corresponding bibliographic code (27)
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Note (26) on KeyCode: [ 1-176] Calibrated [Fe/H] sources
[201-495] Uncalibrated [Fe/H] sources
[501-703] Radial velocity sources
Note (27) on BibCode: Radial velocities obtained through SIMBAD having no
source reference are indicated with the pseudo-code "2010.........SIMBAD"
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Byte-by-byte Description of file: groups.dat
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Bytes Format Units Label Explanations
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1- 21 A21 --- Name Group name
23- 25 I3 --- n Number of assigned Hipparcos member stars
27- 32 F6.2 deg RA Mean right ascension
34- 39 F6.2 deg DE Mean Declination
41- 46 F6.1 pc Dist Mean Distance
48- 52 F5.1 mas/yr pmRA Mean proper motion in RA*cos(DEdeg)
54- 59 F6.1 mas/yr pmDE Mean proper motion in Declination
61- 65 F5.2 mas e_RA Standard error on RA*cos(DEdeg)
67- 70 F4.2 mas e_DE Standard error on DE
72- 77 F6.1 pc e_Dist Standard error on Dist
79- 82 F4.1 mas/yr e_pmRA Standard error on pmRA
84- 87 F4.1 mas/yr e_pmDE Standard error on pmDE
89- 92 F4.1 deg rad_pc Physical radius (1-sigma containment)
94- 98 F5.1 pc rad_deg Angular radius (1-sigma containment)
100-105 F6.1 pc X Heliocentric distance towards Gal. center
107-112 F6.1 pc Y Heliocentric distance towards Gal. rotation
114-119 F6.1 pc Z Heliocentric distance towards N. Gal. Pole
121-125 F5.1 pc e_X Standard error on X
127-131 F5.1 pc e_Y Standard error on Y
133-136 F4.1 km/s e_Z Standard error on Z
138-142 F5.1 km/s RV Radial velocity
144-146 F3.1 dex e_RV Standard error on radial velocity
148-152 F5.2 dex [Fe/H] Iron abundance
154-157 F4.2 --- e_[Fe/H] Standard error on [Fe/H]
159-161 I3 km/s n_[Fe/H] Number of Hipparcos member stars with [Fe/H]
163-167 F5.1 km/s U Heliocentric velocity towards Gal. center
169-173 F5.1 km/s V Heliocentric velocity towards Gal. rotation
175-179 F5.1 km/s W Heliocentric velocity towards N. Gal. Pole
181-183 F3.1 km/s e_U Standard error on U
185-187 F3.1 km/s e_V Standard error on V
189-191 F3.1 km/s e_W Standard error on W
193-196 F4.2 mag E(B-V)_1 Color excess in B-V, CDS Cat. B/ocl
198-201 F4.2 mag E(B-V)_2 Color excess in B-V, CDS Cat. J/A+A/477/165
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(End) Erik Anderson [astrostudio.org], Francois Ochsenbein [CDS] ##-Aug-2011