J/AZh/88/143 ORICAT Catalog of Stars in Orion Great Nebula (Vereshchagin+, 2011)
Proper motions of stars in the region of the Great Nebula in Orion
Vereshchagn S.V., Chupina N.V.
<Astron. Zh. 88, 143 (2011)>
=2011AZh....88..143V 2011AZh....88..143V
=2011ARep...55..123V 2011ARep...55..123V
ADC_Keywords: Nebulae ; Positional data ; Proper motions ; Photometry
Abstract:
Six Tautenburg 2-m Schmidt telescope plates have been used to derive
proper motions for 12740 stars down to Blim=18.5 in the region
centered at RA=83.45grad, Dec=-5.20grad of the Great Nebula in
Orion. Each plate covers a 3x3 grad region of sky, with a scale of
51.4"/mm. The largest difference between the epochs is 36 years. The
photographic plates were scanned using Tautenburg Observatory plate
scanner. The accuracy of the scans was 0.5micron, and the scale was
1000pixels/mm. The rectangular coordinates x, y and instrumental
magnitudes were then determined using a dedicated software. To convert
the scanned positions to the equatorial coordinates we adopt reference
stars from the ACT catalog. Mean errors of position determinations are
3-4mas. The components of the proper motions and their rms
uncertainties were obtained via linear least-squares fit to individual
rectangular coordinates as a function of the observing epoch with no
less than three epochs for every proper motion. The mean measurement
uncertainty is 3.5mas/yr in magnitude interval 15-19 and 5.0mas/yr
outside this interval. The photometry has been taken from Walker
(1969) for B-magnitudes, and from USNO-A2.0 for R-magnitudes. Mean
errors for photometry are 0.03mag in B and 0.25mag in R. The ORICAT
is supplemented with the data of Parenago (1954) (stars with numbers
greater 17000), and includes 13 577 stars in total.
ACKNOWLEDGMENTS. We thank E. Schilbach, N.V. Kharchenko, and R.D.
Scholz for numerous discussions of the results, and J. Brunzendorf and
H. Meusinger for help in organizing the work at Jena Observatory.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
oricat.dat 281 13577 The ORICAT Catalog of star in Orion
--------------------------------------------------------------------------------
See also:
II/171 : Parenago Catalog of Stars in Orion Nebula (Parenago 1954)
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
I/246 : The ACT Reference Catalog (Urban+ 1997)
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
I/312 : PPMX Catalog of positions and proper motions (Roeser+ 2008)
J/A+AS/118/503 : Proper motions of stars in Ori Nebula (Tian+ 1996)
Byte-by-byte Description of file: oricat.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- Oricat Oricat catalogue number (1)
7- 10 I4 --- Par ? Parenago catalogue number(II/171)
13- 17 I5 --- HIP ? Hipparcos number (I/239)
19- 33 A15 --- PPMX ? PPMX name (HHMMSS.s+DDMMSS, Cat. I/312)
35- 41 I7 --- ACTRC ? ACTRC number (column "AC 2000") (I/246)
44- 55 F12.9 deg RAdeg Right Ascension, degrees (J2000) (2)
58- 69 F12.9 deg DEdeg Declination, degrees (J2000) (2)
71- 77 F7.2 mas/yr pmRA ? Proper motion in RA
79- 85 F7.2 mas/yr pmDE ? Proper motion in DE
87- 91 F5.2 mas/yr e_pmRA ? Standard error in pmRA
93- 97 F5.2 mas/yr e_pmDE ? Standard error in pmDE
99-105 F7.2 mas/yr pmRAM ? Proper motion in RA from McNamara et al.
(1989AJ.....97.1427M 1989AJ.....97.1427M) (3)
107-113 F7.2 mas/yr pmDEM ? Proper motion in DE from McNamara et al.
(1989AJ.....97.1427M 1989AJ.....97.1427M) (3)
115-119 F5.2 mas/yr e_pmRAM ? Standard error in pmRAM
121-125 F5.2 mas/yr e_pmDEM ? Standard error in pmDEM
127-132 F6.1 mas/yr pmRAT ? Proper motion in RA from Tian et al. 1966
(J/A+AS/118/503)
134-139 F6.1 mas/yr pmDET ? Proper motion in DE from Tian et al. 1966
(J/A+AS/118/503)
141-143 F3.1 mas/yr e_pmRAT ? Standard error in pmRAT
145-147 F3.1 mas/yr e_pmDET ? Standard error in pmDET
149-154 F6.2 mas/yr pmRAH ? Proper motion in RA from Hipparcos (I/239)
156-161 F6.2 mas/yr pmDEH ? Proper motion in DE from Hipparcos (I/239)
163-166 F4.2 mas/yr e_pmRAH ? Standard error in pmRAH
168-171 F4.2 mas/yr e_pmDEH ? Standard error in pmDEH
173-178 F6.2 mas/yr pmRArH ? Proper motion in RA from Hipparcos
new reduction (I/311)
180-185 F6.2 mas/yr pmDErH ? Proper motion in DE from Hipparcos
new reduction (I/311)
187-190 F4.2 mas/yr e_pmRArH ? Standard error in pmRArH
192-195 F4.2 mas/yr e_pmDErH ? Standard error in pmDErH
197-202 F6.2 mas/yr pmRAP ? Proper motion in RA from PPMX (I/312)
204-209 F6.2 mas/yr pmDEP ? Proper motion in DE from PPMX (I/312)
211-214 F4.1 mas/yr e_pmRAP ? Standard error in pmRAP
216-219 F4.1 mas/yr e_pmDEP ? Standard error in pmDEP
221-227 F7.2 mas/yr pmRAA ? Proper motion in RA from ACTRC
229-235 F7.2 mas/yr pmDEA ? Proper motion in DE from ACTRC
237-241 F5.2 mas/yr e_pmRAA ? Standard error in pmRAA
243-247 F5.2 mas/yr e_pmDEA ? Standard error in pmDEA
249-255 A7 --- SpType ? Mk spectral type from II/171
257-261 F5.2 mag Bmag ? Calculated B magnitude
263-267 F5.2 mag Rmag ? Calculated R magnitude
269-273 F5.2 mag m9169 ? Magnitude from plate 9169
275-279 F5.2 mag m4275 ? Magnitude from plate 4275
281-281 I1 --- Npl ? Number of used plates for the proper
motions determination
--------------------------------------------------------------------------------
Note (1): Numbering corresponds to the initial list of stars: as stars
within 7-10mm of the plate edges have been excluded, catalogue
numbering begins with 458.
Note (2): equinox J2000, epoch: for stars with number less 17000 epoch
J1975.11, for stars with number more 17000 epoch from Parenago (1954,
II/171).
Note (3): data are taken from: B.J. McNamara, W.J. Hack, R.W. Olson, R.D.
Mathien, "A proper-motion membership analysis of stars in the vicinity
of the Orion Nebula", 1989AJ.....97.1427M 1989AJ.....97.1427M.
--------------------------------------------------------------------------------
(End) Natalya Chupina, Veta Avedisova [INASAN] 05-Sep-2011