1994A&AS..108..513G

Query : 1994A&AS..108..513G

1994A&AS..108..513G - Astron. Astrophys., Suppl. Ser., 108, 513-532 (1994/December-2)

Deep Hα survey of the Milky Way. II. The l=328deg area.

GEORGELIN Y.M., AMRAM P., GEORGELIN Y.P., LE COARER E. and MARCELIN M.

Abstract (from CDS):

The detailed velocity field of the ionized hydrogen over an area of about 4x3deg around galactic longitude 328deg has been obtained in the frame of an Hα Survey of the galactic plane carried out at ESO La Silla. The detailed analysis of the Hα profiles shows that there are several layers of ionized hydrogen with different velocities. Besides individual HII regions there are two diffuse nebular emissions detected all over the studied area with velocities -20km/s and -40km/s. The HII regions exhibit complex structures; according to their velocities they can be divided into two groups around -40km/s and -47km/s. We have studied in detail the structure and velocities of the bright HII regions. The well known narrow lines of RCW94 are confirmed. The distances of the O-B3 stars in this area have been calculated from the literature data, and combined with radio data and our Hα data allow us to determine the distances of the nebular components. We find that the faint ionized gas layer at -20km/s, never detected before, neither at optical nor at radio wavelengths, is at about 1kpc and defines the Sagittarius Carina arm at longitude 328deg. This implies that the main HII regions in this area and the diffuse ionized hydrogen in which they are immersed belong to a second arm (probably the Scutum Crux arm). This arm appears split at this longitude with two groups at 2.3 and 3kpc. The radiosource 327.759-0.351 at H109α VLSR=-72km/s (dkin=4.5kpc) has been detected at Hα wavelength behind the other Hα emissions.

Abstract Copyright: ∼

Journal keyword(s): interstellar medium: HII regions - Galaxy: structure

Nomenclature: Table 2: [GAG94] RCW 94.N N=4. Table 4: [GAG94] LLL.lll+B.bbb N=27, [GAG94] CO LLL.l+B.b N=14, [GAG94] HA LLL.l+B.b N=8

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

CDS comments: Table 3: BDMW = [OM80], MF = Muzzio, D = [D72].

Simbad objects: 107

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Number of rows : 107
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 NAME Crux-Scutum Spiral Arm reg 12 30 -60.0           ~ 323 0
2 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 581 1
3 [CH87] 324.147+0.231 HII 15 32 06.7 -55 52 37           ~ 7 0
4 [CH87] 324.192+0.109 HII 15 32 52.8 -55 56 59           ~ 8 0
5 [CH87] 324.954-0.584 HII 15 40 12.3 -56 03 49           ~ 4 0
6 [CH87] 326.230+0.976 HII 15 40 49.3 -54 03 01           ~ 5 1
7 LS 3386 s*b 15 42 12.0459250584 -54 11 21.119345052 12.94 12.56 10.94 10.48   O6Iaf 31 0
8 GAL 326.45+00.90 HII 15 42 13.4 -53 58 24           ~ 5 0
9 GRS G326.50 +00.90 HII 15 42 21.9 -53 58 28           ~ 18 0
10 GEN# +6.20109123 * 15 44 20.2009918440 -53 54 41.347157508 14.45 14.25 12.87     O9V 12 0
11 [DBS2003] 95 HII 15 44 42.8 -54 05 56           ~ 61 0
12 GEN# +6.20109126 * 15 45 41.0401414440 -54 42 48.962173068 14.61 14.37 13.09     ~ 6 0
13 [CH87] 326.141-0.328 HII 15 45 47.7 -55 08 28           ~ 5 0
14 TYC 8697-33-1 * 15 47 22.2038533704 -54 00 39.034360944 13.21 12.97 11.58     ~ 6 0
15 [CH87] 326.441-0.396 HII 15 47 44.2 -55 00 35           ~ 6 0
16 CD-53 6249 bC? 15 48 40.0822953072 -54 14 37.822158492 10.8 11.18 10.49 10.36   B1II 21 1
17 GAL 326.96+00.03 HII 15 48 43.1 -54 21 15           ~ 8 0
18 HD 140926 Be* 15 48 47.8640339520 -54 23 44.366256600 7.12 7.86 7.90 9.04   B2/3Vnne 40 0
19 [CH87] 326.660-0.471 HII 15 49 15.5 -54 55 57           ~ 5 0
20 CD-53 6255 * 15 49 27.8986857456 -54 17 31.182902052 11.36 11.59 10.89 10.84   B1IV 21 0
21 [CH87] 326.985-0.158 HII 15 49 39.8 -54 29 06           ~ 4 0
22 [CH87] 326.718-0.564 HII 15 49 58.7 -54 58 08           ~ 5 0
23 TYC 8697-1776-1 * 15 49 59.9449458360 -53 50 59.499061260 12.9 12.84 11.69     ~ 7 0
24 CD-54 6413 * 15 50 19.8487527672 -54 26 43.343333556 11.12 11.39 10.71 10.61   OB 20 0
25 [CH87] 327.023-0.315 HII 15 50 32.8 -54 35 02           ~ 4 0
26 HD 141318 Pu* 15 51 06.8041626360 -55 03 19.928655972 5.13 5.756 5.767 7.08   B2III 93 0
27 GEN# +6.45703306 * 15 51 28.0985436504 -54 29 44.566358136   16.42 15.00     ~ 2 0
28 2MASS J15520440-5441111 Y*? 15 52 04.4017419096 -54 41 11.186711952   15.59 13.83     ~ 3 0
29 GSC 08701-01012 * 15 52 12.6008435952 -54 41 12.144109884 14.63 14.15 12.56     ~ 7 0
30 GEN# +6.45703315 * 15 52 13.2553352256 -54 43 30.094092372   16.31 14.67     ~ 2 0
31 WRAY 15-1366 Em* 15 52 15.0736965816 -55 02 22.731702360 12.82 12.67 11.73 11.46   OBe 11 0
32 GSC 08701-01149 * 15 52 17.2071007848 -54 38 56.561572752 12.77 12.70 11.79 11.60   OB- 10 0
33 ALS 18026 LP* 15 52 22.2589640266 -54 34 07.363520901 15 14.88 13.58     ~ 6 0
34 WRAY 15-1367 Em* 15 52 26.0372519352 -54 08 45.644489196 13.21 12.28 11.21 10.34   ~ 8 1
35 GEN# +6.45703317 * 15 52 31.9030643112 -54 40 25.365088056   16.21 14.48     ~ 2 0
36 CD-52 7069 * 15 52 39.7833061440 -53 11 56.956278984 10.43 10.76 10.29     ~ 11 0
37 WRAY 15-1368 Em* 15 52 45.6488341896 -54 41 03.470832708   13.05 12.30     ~ 3 0
38 RCW 96 HII 15 52.8 -55 15           ~ 2 0
39 GEN# +6.45703302 * 15 52 54.4308775944 -54 20 43.956711492   16.17 14.59     ~ 2 0
40 RCW 97 HII 15 53 05.0 -54 35 24           ~ 171 0
41 GSC 08701-00591 * 15 53 07.1222332968 -54 46 04.675765080   15.08 13.38     ~ 2 0
42 HD 141782 V* 15 53 26.7069742200 -54 12 06.554168532 8.3 8.73 8.71     B1/2Vn 14 0
43 GSC 08701-00485 * 15 53 48.5921467512 -54 35 10.687338024   13.99 11.96 11.40   O8Ib(f) 5 0
44 HD 141926 HXB 15 54 21.7677373488 -55 19 44.310748620 8.71 9.47 9.13 9.38   B2IIIn 86 0
45 CPD-55 6764 Em* 15 54 22.0547332272 -55 45 47.796438024 11.91 12.12 11.38 11.29   OB+e 13 0
46 CD-53 6296 * 15 55 02.6661666792 -54 00 08.704142244 9.37 10.12 9.64 9.59   B1Ib 24 0
47 GEN# +6.45703311 * 15 55 02.7444882792 -54 33 41.834423592   14.95 13.75     ~ 2 0
48 RCW 98 HII 15 55.4 -54 39           ~ 15 1
49 HD 142152 EB* 15 55 33.8521084896 -54 46 35.833976472 9.43 10.10 9.82 9.90   B0III 37 0
50 CD-54 6456 ** 15 55 39.60148 -54 38 36.6363 10.51 10.95 10.41 10.37 8.94 O9.5V 47 2
51 ALS 18028 * 15 55 44.3 -54 44 07 14.51 14.28 12.97     O5+ 5 0
52 CPD-55 6802 * 15 55 47.3439066984 -56 18 07.553775132 11.12 11.53 11.02 10.97   OB- 14 0
53 ALS 18025 * 15 55 53 -54 31.4 12.96 13.24 12.38     B1Vn 8 0
54 HD 142237 Be* 15 56 05.9721351288 -54 57 09.551275920 8.26 8.88 8.82     B1Vne 41 0
55 GEN# +6.45703038 * 15 56 06.4673526720 -54 13 26.185920384 13.19 13.21 12.18     B1IV+B? 11 0
56 CD-54 6463 * 15 56 10.8702139200 -54 42 21.022939944 9.89 10.42 10.04 10.10   B0III 27 0
57 TYC 8697-1319-1 * 15 56 23.6045124072 -54 10 24.776086584 11.63 11.83 11.32     ~ 9 0
58 CPD-53 6818 s*b 15 56 40.7765534088 -54 04 48.060502644 11.85 11.69 10.48 10.21   B1Ia 20 0
59 CD-54 6465 * 15 56 44.2047967920 -55 02 42.491732460 10.78 11.12 10.44 10.41   OB 15 0
60 CPD-53 6825 s*b 15 56 49.9331883888 -54 05 16.993361184 10.85 11.26 10.63 10.63   B0.5Iab 16 0
61 ALS 18054 * 15 56 56.0 -54 16 50 13.21 13.02 11.70     ~ 5 0
62 HD 142451 * 15 57 19.3234506120 -54 31 41.933078832   9.23 9.23     B3V 10 0
63 HD 142468 V* 15 57 24.5974526400 -54 19 56.127186840 8.07 8.48 7.90 8.70   B1Ia/Iab 86 0
64 CPD-53 6850 Em* 15 57 28.1874334368 -53 57 41.371254180 11.09 11.47 10.96 10.94   B0.5V 28 1
65 TYC 8701-280-1 * 15 57 39.6693274368 -54 32 24.522610740   13.38 12.71     B0 5 0
66 CD-55 6437 * 15 57 47.3246209392 -55 44 42.382162608 10.51 11.07 10.72 10.82   OB- 15 0
67 CPD-54 6846 * 15 57 50.5145273664 -54 33 39.025373616 10.27 10.79 10.38 10.42   B0.5III 29 0
68 HD 142565 * 15 57 51.2675797488 -54 23 34.068006492 8.94 9.46 9.67 9.52   B1II 52 0
69 [OM80] 146 cC* 15 57 52.3359772320 -54 48 00.060665904 13.52 12.77 11.87 11.152   OB+ 8 0
70 CPD-53 6867 Ae* 15 58 09.670680 -53 51 35.06328 11.61 11.84 11.02 10.88 10.07 B0Ve 22 1
71 WRAY 15-1391 Em* 15 58 12.0658730400 -54 31 50.774650896 12.54 12.75 12.18 12.08   OB-E 14 0
72 V* V394 Nor EB* 15 58 14.7250840248 -54 20 30.630202044 9.01 9.29 9.56 9.28   B0/0.5Ia/Iab 42 0
73 CPD-53 6872 * 15 58 17.6600999064 -53 54 49.313099772 12.07 12.47 11.86 11.78   B1V 19 0
74 CD-54 6479 * 15 58 18.6058578024 -54 56 37.531841280 11.03 11.31 10.72 10.72   OB 14 0
75 CPD-54 6867 * 15 58 36.8234601576 -55 11 29.331492216 11.12 11.33 10.87     ~ 7 0
76 HD 142775 * 15 59 01.3175283264 -54 24 45.634354560 9.52 9.760 9.71 9.54   B0/1III 40 0
77 WRAY 15-1397 Em* 15 59 13.3790103960 -53 48 36.701318736 12.69 12.75 11.87 11.36   OBe 10 0
78 GRS G328.59 -00.52 bub 15 59 28.4 -53 44 57           ~ 43 1
79 IRAS 15557-5337 MIR 15 59 36.64 -53 45 53.3           ~ 20 0
80 GEN# +6.45703108 * 15 59 40.2 -54 29 42   13.29 12.440     B0.5 4 0
81 CPD-54 6898 * 16 00 03.7644586920 -54 21 57.526754904 12.06 12.07 10.97 10.70   O5III 23 0
82 CD-53 6352 ** 16 00 26.81334 -53 54 40.6785           O7III 18 0
83 CD-53 6355 * 16 01 04.0679664120 -54 18 07.421142888 10.92 11.16 10.36 10.21   OB+: 15 0
84 CD-53 6363 * 16 01 43.7817710016 -54 08 40.876883448 9.8 10.22 9.77 9.94   O9.5II 26 0
85 CPD-53 6954 * 16 01 51.7781538720 -54 02 59.085201408 11.47 11.88 11.22 11.14   OB 15 0
86 HD 143218 * 16 01 53.2228001640 -54 50 50.891913384 9.62 9.97 9.61     B2II/III 20 0
87 CPD-53 6964 * 16 02 05.3458284336 -53 53 10.405341744 11.65 12.14 11.67 11.67   OB- 15 0
88 CPD-54 6948 Em* 16 02 12.0867024720 -54 50 00.333088476 11.47 11.91 11.23 11.08   OB+e 24 0
89 CD-53 6370 * 16 02 52.4514057936 -54 09 51.337777464 11.48 11.69 10.82 10.69   OB 15 0
90 CPD-53 6984 * 16 03 01.9683125784 -53 48 14.953712688 11.86 12.11 11.86     ~ 11 0
91 CD-53 6374 * 16 03 28.1573 -53 40 58.678 10.62 10.86 10.40 10.29   OB- 14 0
92 CD-55 6511 * 16 04 24.7663111224 -55 23 58.848186696 10.98 11.17 10.44 10.33   B0Ib 19 0
93 CPD-54 6990 * 16 04 39.8715163968 -55 15 08.155181340 11.52 11.93 11.34 11.29   OB- 14 0
94 CD-54 6519 Em* 16 04 51.9899575464 -55 06 56.525556888 11.65 11.98 11.55 11.54   OB-e 14 0
95 HD 143752 * 16 04 59.2394545944 -55 08 25.363991220 8.22 8.53 8.39     B3III 16 0
96 CPD-54 6995 * 16 05 06.1186583856 -54 55 10.391522628 11.11 11.52 10.88 10.78   OB 15 0
97 CPD-53 7041 * 16 05 08.0475131784 -53 20 49.622773884 10.39 10.85 10.63     B5 9 0
98 CPD-52 9235 * 16 06 17.3634950688 -52 48 47.829713400 10.99 11.41 10.88 10.88   B1 16 0
99 CD-53 6402 * 16 06 43.9849097088 -54 13 36.767564076 11.4 11.55 10.62 10.36   OB+: 19 0
100 CD-53 6407 * 16 07 04.4749368696 -54 10 59.695362876 10.46 10.43 9.82 9.83   OB+ 17 0
101 CD-53 6409 ** 16 07 18.3018273216 -54 11 50.700793200 9.84     9.586   OB+ 19 0
102 CD-53 6420 * 16 07 55.5973265736 -53 30 32.954550948 10.77 10.95 10.53 10.55   OB+ 16 0
103 HD 144320 Be* 16 07 59.7806881368 -55 07 49.652863068 8.80 9.48 9.248     B1Vne 52 0
104 CO 326.80-00.60 MoC ~ ~           ~ 1 0
105 GAL 327.013+00.387 HII ~ ~           ~ 1 0
106 CO 325.30-00.10 MoC ~ ~           ~ 1 0
107 CO 326.60+00.60 MoC ~ ~           ~ 1 0

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