J/MNRAS/375/1381 Kinematics of RR Lyr and HB stars in NGP (Kinman+, 2007)
Kinematic structure in the Galactic halo at the North Galactic Pole:
RR Lyrae and blue horizontal branch stars show different kinematics.
Kinman T.D., Cacciari C., Bragaglia A., Buzzoni A., Spagna A.
<Mon. Not. R. Astron. Soc., 375, 1381-1398 (2007)>
=2007MNRAS.375.1381K 2007MNRAS.375.1381K
ADC_Keywords: Galactic pole, north ; Stars, variable ; Space velocities ;
Proper motions
Keywords: stars: horizontal branch - stars: kinematics -
stars: variables: others - Galaxy: halo - Galaxy: structure
Abstract:
Radial velocities and proper motions (derived from the GSC-II data
base) are given for 38 RR Lyrae (RRL) stars and 79 blue horizontal
branch (BHB) stars in a ∼200deg2 area around the North Galactic Pole
(NGP). Both heliocentric (UVW) and galactocentric (VR, Vphi, Vz) space
motions are derived for these stars using a homogeneous distance scale
consistent with (m-M)0=18.52 for the Large Magellanic Cloud (LMC).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 108 79 The BHB stars of our sample, parallaxes and
proper motions
table2.dat 116 38 The RRL stars of our sample, parallaxes and
proper motions
table8.dat 72 79 The BHB stars of our sample, velocities
table9.dat 72 38 The RRL stars of our sample, velocities
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Name
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 19 F4.1 s RAs Right ascension (J2000)
21 A1 --- DE- Declination sign (2000)
22- 23 I2 deg DEd Declination (2000)
25- 26 I2 arcmin DEm Declination (2000)
28- 29 I2 arcsec DEs Declination (2000)
31- 35 F5.2 mag Vmag V magnitude
37- 42 F6.3 mag B-V B-V colour index
44- 48 F5.3 mag E(B-V) Redenning
50- 54 F5.2 mag Kmag 2MASS K magnitude
56 A1 ---- Q [ABCDU] Photometric quality (G1)
58- 62 F5.3 mas pi1 Parallax derived from HBP method (1)
64- 68 F5.3 mas e_pi1 rms uncertainty on piHBP
70- 74 F5.3 mas pi2 Parallax derived from HBC method (2)
76- 80 F5.3 mas pi3 Parallax derived from HVK method (3)
82- 86 F5.1 mas/yr pmRA Proper motion along right ascension
88- 90 F3.1 mas/yr e_pmRA rms uncertainty on pmRA
92- 96 F5.1 mas/yr pmDE Proper motion along declination
98-100 F3.1 mas/yr e_pmDE rms uncertainty on pmDE
102-105 I4 km/s RV Radial velocity
107-108 I2 km/s e_RV rms uncertainty on RV
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Note (1): π(HBP) is derived from the equation
VMAG=1-4.423(B-V)0+17.47(B-V)02-35.73(B-V)03
Note (2): π(HBC) is derived from the equation
VMAG=1.145-5.615(B-V)0+16.28(B-V)02-14.93(B-V)03
Note (3): π(HVK) is derived from the equation
KMAG=0.878-1.812(V-K)0+0.675(V-K)02-0.183(V-K)03
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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- 8 A8 --- Name Name
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 19 F4.1 s RAs Right ascension (J2000)
21 A1 --- DE- Declination sign (2000)
22- 23 I2 deg DEd Declination (2000)
25- 26 I2 arcmin DEm Declination (2000)
28- 29 I2 arcsec DEs Declination (2000)
31- 36 F6.3 [d] logP Period
37 A1 --- n_logP [*] * for C-type variables
39- 43 F5.2 [Sun] [Fe/H] ?=- Metallicity
45- 49 F5.2 mag <Vmag> Average V magnitude
51- 55 F5.2 mag <Kmag> Average 2MASS K magnitude
57 A1 ---- Q [ABCDU] Photometric quality (G1)
59- 63 F5.3 mag E(B-V) Redenning
65- 69 F5.3 mas pi1 Parallax derived from V method (1)
71- 75 F5.3 mas e_pi1 rms uncertainty on piV
77- 81 F5.3 mas pi2 Parallax derived from K method (2)
83- 87 F5.3 mas pi3 Parallax derived from HB method (3)
89- 93 F5.1 mas/yr pmRA Proper motion along right ascension
95- 97 F3.1 mas/yr e_pmRA rms uncertainty on pmRA
99-103 F5.1 mas/yr pmDE Proper motion along declination
105-108 F4.1 mas/yr e_pmDE rms uncertainty on pmDE
110-113 I4 km/s RV ?=- Radial velocity
115-116 I2 km/s e_RV ?=- rms uncertainty on RV
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Note (1): π1 is derived from the equation
VMAG=0.214[Fe/H]+0.86
Note (2): π2 is derived from the equation
KMAG=-2.40logP+0.06[Fe/H]-1.06
Note (3): π3 is derived from the equation
KMAG=1.166+0.18[Fe/H]-1.812(V-K)0+0.675(V-K)02-0.183(V-K)03
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Byte-by-byte Description of file: table[89].dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Name
10- 13 F4.1 kpc Z Height above the plane, Z
15- 18 F4.1 kpc Rgal Galactocentric distance
20- 23 I4 km/s Uvel Heliocentric U velocity
25- 27 I3 km/s e_Uvel rms uncertainty on Uvel
29- 32 I4 km/s Vvel Heliocentric V velocity
34- 36 I3 km/s e_Vvel rms uncertainty on Vvel
38- 41 I4 km/s Wvel ?=- Heliocentric W velocity
43- 45 I3 km/s e_Wvel ?=- rms uncertainty on Wvel
47- 50 I4 km/s Vr Galactocentric cylindrical (radial) velocity
52- 54 I3 km/s e_Vr rms uncertainty on Vr
56- 59 I4 km/s Vphi Galactocentric cylindrical (orthoradial) velocity
61- 63 I3 km/s e_Vphi rms uncertainty on Vphi
65- 68 I4 km/s Vz ?=- Galactocentric cylindrical (z) velocity
70- 72 I3 km/s e_Vz ?=- rms uncertainty on Vz
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Global notes:
Note (G1): Photometric quality as follows:
A = observation having a signal-to-noise ratio (S/N) of >10
B = observation having a signal-to-noise ratio (S/N) of >7
C = observation having a signal-to-noise ratio (S/N) of >5
D = observation having a signal-to-noise ratio (S/N) of <5
U = upper limit
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 21-Dec-2007