J/PAZh/37/281 Galactic rotation curve from selected maser (Stepanishechev+ 2011)
Galactic rotation curve from the space velocities of selected maser.
Stepanishechev A.S., Bobylev V.V.
<Pis'ma Astron. Zh. 37, 281 (2011)>
=2011PAZh...37..281S 2011PAZh...37..281S
=2011AstL...37..254S 2011AstL...37..254S
ADC_Keywords: Masers ; H II regions ; Galaxies, rotation ; Proper motions ;
Radial velocities ; Space velocities
Keywords: rotation curve - Galactic kinematics - masers - star-forming regions
Abstract:
Based on currently available observations of 28 maser sources in 25
star-forming regions with measured trigonometric parallaxes, proper
motions, and radial velocities, we have constructed the rotation curve
of the Galaxy. Taking different distances to the Galactic center R0,
we have estimated the peculiar velocity of the Sun, the angular
velocity of Galactic rotation, and its three derivatives.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 83 29 Basic data on masers
table2.dat 59 29 Residual heliocentric space velocities of masers
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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- 17 A17 --- Name Source name
19- 27 F9.5 deg RAdeg Right ascension in decimal degrees (J2000)
29- 37 F9.5 deg DEdeg Declination in decimal degrees (J2000)
39- 43 F5.3 mas plx Parallax
45- 49 F5.3 mas e_plx rms uncertainty on plx
51- 55 F5.2 mas/yr pmRA Proper motion along RA, pmRAcosDE
57- 60 F4.2 mas/yr e_pmRA rms uncertainty on pmRA
62- 67 F6.2 mas/yr pmDE Proper motion along DE
69- 72 F4.2 mas/yr e_pmDE rms uncertainty on pmDE
74- 78 F5.1 km/s HRV Heliocentric radial velocity
80- 83 F4.1 km/s e_HRV rms uncertainty on HRV
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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- 17 A17 --- Name Source name
20- 24 F5.2 kpc R Galactocentric distance of the maser
26- 30 F5.1 km/s Upec Peculiar U velocity (2)
32- 35 F4.1 km/s e_Upec rms uncertainty on Upec
37- 41 F5.1 km/s Vpec Peculiar V velocity (2)
43- 46 F4.1 km/s e_Vpec rms uncertainty on Vpec
48- 52 F5.1 km/s Wpec Peculiar W velocity (2)
54- 57 F4.1 km/s e_Wpec rms uncertainty on Wpec
59 I1 --- Ref Reference (1)
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Note (1): References as follows:
1 = Reid et al. (2009ApJ...700..137R 2009ApJ...700..137R)
2 = Hirota et al. (2008PASJ...60..961H 2008PASJ...60..961H)
3 = Hirota et al. (2008PASJ...60...37H 2008PASJ...60...37H)
4 = Sandstrom et al. (2007ApJ...667.1161S 2007ApJ...667.1161S)
5 = Sanna et al. (2009ApJ...706..464S 2009ApJ...706..464S)
6 = Sato et al. (2010PASJ...62..287S 2010PASJ...62..287S)
7 = Rygl et al. (2010A&A...511A...2R 2010A&A...511A...2R)
8 = Asaki et al. (2007, IAU Symp. 242,). The radial velocity for
S Per was taken from Famaey et al. (2005A&A...430..165F 2005A&A...430..165F)
9 = Sato et al. (2010, arXiv:1006.4218v1)
Note (2): peculiar velocity obtained by subtracting the Galactic rotation.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 09-May-2011