2006ApJ...644..214F

Query : 2006ApJ...644..214F

2006ApJ...644..214F - Astrophys. J., 644, 214-228 (2006/June-2)

Modeling the neutral hydrogen interstellar medium: a better kinematic distance tool.

FOSTER T. and MacWILLIAMS J.

Abstract (from CDS):

An advanced approach to the kinematic distance method is developed. The method is applicable to second- and third-quadrant Galactic objects with known velocities. It is based on fitting a model of the density and velocity features in an isothermal H I disk to observed H I data. The velocity field of the gas is modeled with a power law for basic circular rotation, underlying noncircular motions from a two-armed density wave pattern. With a reasonable number of adjustable parameters and constraints the model reproduces observations toward many Galactic objects, and accurate distances are found from the modeled velocity field. High-resolution H I spectral line data from the Canadian Galactic Plane Survey (CGPS; Taylor et al.) are used to discriminate clouds from the intercloud medium (the ``stratum'') for which the model is intended. The ability of the model to reproduce these data is demonstrated in one- [Tb(v)] and two- [Tb(l, v)] dimensional fits. Distances to 22 H II regions and SNRs calculated by the fitted velocity field compare extremely well with other kinematically independent distances.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Disk - Galaxy: Kinematics and Dynamics - Galaxy: Structure - ISM: Kinematics and Dynamics

Simbad objects: 49

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Number of rows : 49
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SN 1572A SN* 00 25 21.5 +64 08 27           B8 1254 1
2 LS I +64 26 * 00 27 17.0031978696 +64 42 19.640050920 11.91 12.04 11.04     B1.5V 24 0
3 SH 2-175 HII 00 27 17.09 +64 42 23.3   12.26 11.37     ~ 45 1
4 HD 2451 * 00 28 47.9701895208 +62 30 22.582855368 8.2 8.85 8.74     B0.5IV 51 0
5 SH 2-177 HII 00 31.5 +62 28           ~ 25 0
6 SNR G132.6+01.5 SNR 02 17 40 +62 45.0           ~ 193 0
7 BD+60 499 Y*O 02 32 16.7518284696 +61 33 14.996422332 10.27 10.85 10.31     O9.5V 87 0
8 IC 1805 OpC 02 32 52.1 +61 28 36           ~ 542 1
9 IC 1848 OpC 02 51 19.4 +60 25 32   6.87 6.5     ~ 522 2
10 BD+60 586 * 02 54 10.6733578416 +60 39 03.492857052 9.632 8.713 8.489 8.893   O7Vz 103 0
11 BD+60 594 * 02 57 04.1273587152 +61 24 57.669134904 10.563 9.58 9.30     O9.5IV-V 98 0
12 HD 18326 Y*O 02 59 23.1709737312 +60 33 59.519691216 9.211 8.21 7.94     O6.5V((f))z+O9/B0V: 142 0
13 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
14 HD 23675 BS? 03 49 27.5698156680 +52 39 19.453394520 8.265 7.12 6.82     B0.5III 93 0
15 SH 2-205 HII 03 52 14 +53 25.0           ~ 40 0
16 HD 24431 ** 03 55 38.4221692944 +52 38 28.747965948 6.50 7.11 6.74 6.36 6.10 O9III+B1.5V 173 0
17 NAME Cyg Arm PoG 20 02 +40.0           ~ 163 0
18 LBN 094.79-01.77 HII 21 38 26 +50 23.1           ~ 39 0
19 BD+49 3587 Em* 21 39 48.4948888296 +50 26 08.599615620 9.36 10.02 9.91     B0 15 0
20 * lam Cep s*b 22 11 30.5765111040 +59 24 52.154264880 4.55 5.29 5.05 4.77 4.62 O6.5I(n)fp 705 1
21 LBN 104.28+02.09 HII 22 12 44.2 +58 59 56           ~ 41 0
22 BD+54 2718 Be* 22 14 59.4823619352 +55 27 48.844035864 9.72 10.33 10.17     B2III 33 0
23 HD 211880 * 22 18 27.8032795224 +63 13 22.448689068 7.47 7.99 7.75     B0.5V 106 0
24 BD+55 2722 Y*O 22 18 58.6254723768 +56 07 23.482698528 9.79 10.59 10.15 9.93   O7V(n)z+B 45 0
25 SH 2-140 OpC 22 19 07.8 +63 17 07           ~ 668 2
26 LBN 102.79-00.92 HII 22 19 09.0 +56 04 45           ~ 109 0
27 IRAS 22172+5549 Y*O 22 19 09.14787 +56 05 00.0380           ~ 105 0
28 IRAS 22176+6303 Y*O 22 19 18.23 +63 18 47.5           ~ 600 0
29 BD+57 2513 * 22 22 02.5850 +58 43 09.439 9.81 10.20 9.63     O9.5V 25 0
30 LBN 104.39+01.32 HII 22 22 11.6 +58 44 18           ~ 39 0
31 Hilt 1145 Be* 22 34 32.5901382648 +58 19 48.816077340 10.41 10.9 10.6     B2III 20 0
32 LBN 106.32-00.35 HII 22 35.0 +58 13           ~ 26 0
33 HD 240068 SB* 22 47 18.6161100096 +58 29 20.562000000 9.61 10.14 9.67     B0III 34 0
34 SH 2-142 HII 22 47 32 +58 02.9           ~ 100 1
35 HD 217086 Y*O 22 56 47.1887590800 +62 43 37.657173900 7.88 8.30 7.66 8.35   O7Vnn((f))z 263 0
36 LBN 110.11+02.44 HII 22 57 06 +62 38.2           ~ 103 0
37 HD 240234 Em* 23 14 34.4585446776 +59 50 12.225145956 9.58 10.05 9.5     B0 34 0
38 SH 2-161 HII 23 15 29.3 +61 51 43           ~ 15 0
39 LBN 111.14-00.72 HII 23 16 03.94 +60 02 00.9           ~ 102 2
40 BD+61 2415 * 23 17 03.3896711472 +61 53 08.569864284 11.14 11.23 10.2     G0 17 0
41 BD+60 2522 Em* 23 20 44.5134945744 +61 11 40.530567984 8.46 9.08 8.67     O6.5(n)fp 228 1
42 NGC 7635 HII 23 20 48.3 +61 12 06           ~ 179 2
43 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1
44 LS I +59 10 * 23 38 10.8292196448 +59 58 55.801139520 11.27 11.6 10.8     B0.2III 19 0
45 LBN 113.05-04.51 HII 23 38 23.7 +59 58 40           ~ 24 0
46 BD+61 2494 Be* 23 39 47.9091513240 +61 55 41.949789636 9.83 10.41 10.0     B3 27 0
47 LBN 114.55+00.22 HII 23 39.8 +61 56           ~ 38 0
48 LBN 114.63-00.85 HII 23 40 11 +60 57.6           ~ 17 0
49 BD+60 2607 * 23 42 10.5437081544 +60 58 04.102182876   10.60 10.10     F3 5 0

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