J/MNRAS/362/1189 Proper motions of 74 pulsars (Zou+, 2005)
Timing measurements and proper motions of 74 pulsars using the
Nanshan radio telescope.
Zou W.Z., Hobbs G., Wang N., Manchester R.N., Wu X.J., Wang H.X.
<Mon. Not. R. Astron. Soc., 362, 1189-1198 (2005)>
=2005MNRAS.362.1189Z 2005MNRAS.362.1189Z
ADC_Keywords: Pulsars ; Proper motions
Keywords: methods: data analysis - astrometry - pulsars: general
Abstract:
We have measured the positions of 74 pulsars from regular timing
observations using the Nanshan radio telescope at Urumqi Observatory
between 2000 January and 2004 August (MJD 5150053240). Proper motions
were determined for these pulsars by comparing their current positions
with positions given in pulsar catalogues. We compare our results to
earlier measurements in the literature and show that, in general, the
values agree. New or improved proper motions are obtained for 16
pulsars. The effect of period fluctuations and other timing noise on
the determination of pulsar positions is investigated. For our sample,
the mean and rms transverse velocities are 443 and 224km/s,
respectively, agreeing with previous work even though we determine
distances using the new NE2001 electron density model.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 122 74 Positions of 74 pulsars from Nanshan timing
observations and previously published positions
table2.dat 119 74 *Comparison of pulsar proper motions derived from
Nanshan timing results with previously published
values
refs.dat 79 10 References
table3.dat 78 16 New and improved pulsar proper motions
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Note on table2.dat: Proper motions are given as mas/yr on the sky, i.e.
pmRA=(dRA/dt)cosDE
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See also:
http://www.atnf.csiro.au/the_atnf/ : ATNF Pulsar Catalogue Home Page
VII/189 : Catalog of Pulsars (Taylor+ 1995)
J/MNRAS/273/411 : Multifrequency fluxes of 280 pulsars (Lorimer+ 1995)
J/ApJS/121/171 : Arecibo polarimetry of 98 pulsars (Weisberg+, 1999)
J/AZh/77/499 : Flux densities of 235 pulsars at 102.5MHz (Malofeev+, 2000)
J/MNRAS/328/855 : Pulsar timing at UAO (Wang+, 2001)
J/MNRAS/328/17 : Parkes Multi-Beam Pulsar Survey (Manchester+, 2001)
J/MNRAS/335/275 : Parkes Multi-Beam Pulsar Survey new PSR (Morris+, 2002)
J/MNRAS/342/1299 : Parkes Multi-Beam Pulsar Survey. III. (Kramer+, 2003)
J/MNRAS/352/1439 : Parkes Multi-Beam Pulsar Survey. IV. (Hobbs+, 2004)
J/MNRAS/353/1311 : Long-term timing observations of 374 pulsars (Hobbs+, 2004)
J/MNRAS/360/974 : 233 pulsar proper motions (Hobbs+, 2005)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- PSRJ PSRJ designation
10 A1 --- Note [a] Note on error determination (1)
12- 18 A7 --- PSRB PSRB designation
20- 24 I5 d Epoch Epoch of the position measurement, in MJD
26- 27 I2 h RAh Right ascension (J2000), at Epoch
29- 30 I2 min RAm Right ascension (J2000), at Epoch
32- 38 F7.4 s RAs Right ascension (J2000), at Epoch
40- 45 F6.4 s e_RAs rms uncertainty on RA
47 A1 --- DE- Declination sign (J2000), at Epoch
48- 49 I2 deg DEd Declination (J2000), at Epoch
51- 52 I2 arcmin DEm Declination (J2000), at Epoch
54- 58 F5.2 arcsec DEs Declination (J2000), at Epoch
60- 64 F5.2 arcsec e_DEs rms uncertainty on DE
66- 68 I3 --- NTOA Number of TOAs in the nearly 5-yr data set
70- 73 F4.1 yr Tspan Time-span between the two position
determinations.
75- 79 I5 d Epoch2 Published epoch, in modified Julian date
81- 82 I2 h RA2h Published Right ascension (J2000)
84- 85 I2 min RA2m Published Right ascension (J2000)
87- 93 F7.4 s RA2s Published Right ascension (J2000)
95-100 F6.4 s e_RA2s rms uncertainty on RA2
102 A1 --- DE2- Published Declination sign (J2000)
103-104 I2 deg DE2d Published Declination (J2000)
106-107 I2 arcmin DE2m Published Declination (J2000)
109-114 F6.3 arcsec DE2s Published Declination (J2000)
116-120 F5.3 arcsec e_DE2s rms uncertainty on DE2
122 I1 --- Ref Reference for previously published values (2)
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Note (1): a: Quoted errors are three times the formal tempo values;
others are two times the formal tempo values
Note (2): References for the previously published as follows:
1 = Taylor et al. (1993ApJ...411..674T 1993ApJ...411..674T)
2 = Arzoumanian et al. (1994ApJ...422..671A 1994ApJ...422..671A)
3 = Johnston et al. (1995A&A...293..795J 1995A&A...293..795J)
4 = Manchester et al. (1996MNRAS.279.1235M 1996MNRAS.279.1235M)
5 = Hobbs et al. (2004, Cat. J/MNRAS/353/1311)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- PSRJ PSRJ designation
11- 17 A7 --- PSRB PSRB designation
19- 21 F3.1 kpc Dist Distance
23- 26 I4 mas/yr pmRA Calculated proper motion along right ascension
28- 30 I3 mas/yr e_pmRA rms uncertainty on pmRA
32- 35 I4 mas/yr pmDE Calculated proper motion along declination
37- 40 I4 mas/yr e_pmDE rms uncertainty on pmDE
42- 44 I3 mas/yr pmtot Calculated total proper motion
46- 49 I4 mas/yr e_pmtot rms uncertainty on pmtot
51- 56 F6.1 mas/yr pmRA1 ?=- Literature proper motion along right
ascension from timing
58- 60 I3 mas/yr e_pmRA1 ? rms uncertainty on pmRAT
62- 67 F6.1 mas/yr pmDE1 ?=- Literature proper motion along declination
from timing
69- 72 I4 mas/yr e_pmDE1 ? rms uncertainty on pmDET
74- 80 F7.2 mas/yr pmRA2 ?=- Literature proper motion along right
ascension from interferometry
82- 84 I3 mas/yr e_pmRA2 ? rms uncertainty on pmRAT
86- 92 F7.2 mas/yr pmDE2 ?=- Literature proper motion along declination
from interferometry
93- 95 I3 mas/yr e_pmDE2 ? rms uncertainty on pmDET
97- 98 I2 --- r_pmRA2 ?=- Reference for interferometric proper motions
100-103 F4.1 --- DpmRA ?=- Offset of pmRA from the most accurate of
the previously pmRA
105-107 F3.1 --- DpmDE ?=- Offset of pmDE from the most accurate of
the previously pmDE
109-113 I5 km/s Vt Transverse velocity
115-119 I5 km/s e_Vt rms uncertainty on Vt
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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- 2 I2 --- Ref Reference number
4- 22 A19 --- BibCode BibCode
24- 40 A17 --- Aut Author's name
42- 79 A38 --- Com Comments
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1 A1 --- --- [J]
2- 10 A9 --- PSRJ PSRJ designation
12 A1 --- --- [B]
13- 20 A8 --- PSRB PSRB designation
21- 24 I4 mas/yr pmRA Proper motion along right ascension
26- 28 I3 mas/yr e_pmRA rms uncertainty on pmRA
31- 34 I4 mas/yr pmDE Proper motion along declination
36- 38 I3 mas/yr e_pmDE rms uncertainty on pmDE
41- 43 F3.1 kpc Dist Distance
45- 48 I4 km/s VRA One-dimensional velocity determined from pmRA
50- 53 I4 km/s e_VRA rms uncertainty on VRA
56- 59 I4 km/s VDE One-dimensional velocity determined from pmDE
61- 64 I4 km/s e_VDE rms uncertainty on VDE
67- 72 F6.3 Myr tau Characteristic age
75- 78 F4.2 10+12gauss Bs Surface dipole magnetic field strength
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 12-May-2006