1994A&A...287..479B

Query : 1994A&A...287..479B

1994A&A...287..479B - Astronomy and Astrophysics, volume 287479-492 (1994/7-2)

A deep VLA search for OH (1612 MHz) maser sources in the galactic plane.

BLOMMAERT J.A.D.L., VAN LANGEVELDE H.J. and MICHIELS W.F.P.

Abstract (from CDS):

The results of a VLA OH (1612 MHz) search for OH/IR stars in 7 fields along the galactic plane are presented. Forty-four sources were detected of which 35 were not previously known. It is shown that "blind" radio interferometric observations (such as with the VLA) are capable of filling up the gap in the IRAS based OH surveys near the galactic plane. This is important for the dynamical modelling of the disc and bulge of our Galaxy. It is also demonstrated that the high resolution of a synthesis telescope is needed to avoid confusion in the galactic plane. Most detected sources are likely to be young (≲1Gyr) and massive (Mms>2-3M☉) evolved stars and have high expansion velocities (vexp>14.5km/s) and small deviations (<10km/s) from galactic rotation. Like Baud et al. (1981) we find a peak in the number of sources around l=25deg, a region associated with active star formation and a low number of stars at l=5deg and 10deg.

Abstract Copyright: ∼

Journal keyword(s): stars: AGB, post-AGB - techniques: interferometric - masers - surveys - radio lines: stars

Simbad objects: 45

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Number of rows : 45
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 IRAS 17526-2437 OH* 17 55 40.33512 -24 38 11.0004           O-rich 3 0
2 OH 005.104+00.122 OH* 17 56 50.8028312790 -24 29 06.034359664         17.297 ~ 4 0
3 IRAS 17539-2440 OH* 17 57 03.32256 -24 40 51.0492           O-rich 5 0
4 IRAS 18044-2026 OH* 18 07 23.40168 -20 25 53.2668           O-rich 7 1
5 OH 009.88-00.13 OH* 18 07 59.06976 -20 27 33.5124           O-rich 12 0
6 OH 010.028-00.063 OH* 18 08 03.27792 -20 17 48.5628           O-rich 6 1
7 OH 010.04-00.10 OH* 18 08 16.38432 -20 16 11.5608           O-rich 35 0
8 OH 014.8+00.2 OH* 18 16 41.699 -16 04 08.55           ~ 5 0
9 V* KN Ser Mi* 18 16 57.8982022392 -15 53 25.347981696         13.761 ~ 8 0
10 OH 014.988+00.134 OH* 18 17 21.02448 -15 51 01.4076           ~ 1 0
11 OH 015.059+00.099 OH* 18 17 36.32 -15 48 27.4           ~ 1 0
12 IRAS 18152-1609 OH* 18 18 10.63800 -16 08 12.9372           O-rich 8 0
13 OH 015.117-00.183 OH* 18 18 45.73320 -15 53 14.7912           ~ 2 0
14 IRAS 18197-1325 OH* 18 22 32.09472 -13 23 58.1856           O-rich 2 0
15 IRAS 18198-1342 OH* 18 22 41.2333307544 -13 40 56.708921604           O-rich 7 0
16 OH 017.2-00.2 AB* 18 22 46.97688 -14 06 26.8128           ~ 5 0
17 OH 017.434-00.077 AB* 18 22 53.5930665720 -13 47 40.067124252         17.955 O-rich 5 0
18 IRC -10414 s*r 18 23 17.9055962736 -13 42 47.118241332       11.149   M7I 98 0
19 OH 017.383-00.243 OH* 18 23 23.58072 -13 55 07.6008           O-rich 1 0
20 OH 017.4-00.3 OH* 18 23 35.00496 -13 55 49.1448           O-rich 18 0
21 IRAS 18210-1359 mul 18 23 55.5 -13 58 04           ~ 6 0
22 MSX5C G017.3984-00.3836 AB* 18 23 56.59152 -13 58 04.4220           O-rich 5 0
23 OH 022.560+00.201 OH* 18 31 37.81968 -09 07 42.6864           O-rich 1 0
24 OH 022.742+00.237 AB* 18 31 50.3626706568 -08 57 00.062826943           O-rich 1 0
25 OH 022.446+00.035 OH* 18 32 00.71112 -09 18 22.4856           O-rich 4 0
26 IRAS 18293-0929 OH* 18 32 07.23192 -09 27 12.4056           O-rich 3 0
27 OH 022.458-00.011 OH* 18 32 12.29856 -09 18 55.0440           ~ 1 0
28 IRAS 18296-0929 OH* 18 32 22.77936 -09 27 44.1468           O-rich 5 0
29 OH 022.8-00.3 OH* 18 33 40.24176 -09 09 07.3188           O-rich 7 0
30 RAFGL 2188 IR 18 33 47.8 -09 06 53           ~ 6 0
31 OH 024.978+00.261 OH* 18 35 54.36 -06 56 47.5           ~ 1 0
32 OH 024.7+00.1 OH* 18 35 57.49368 -07 18 56.8584           O-rich 12 0
33 IRAS 18332-0655 OH* 18 35 59.33304 -06 53 12.8076           O-rich 7 0
34 IRAS 18333-0707 OH* 18 36 03.81048 -07 05 19.7844           O-rich 3 0
35 OH 024.809+00.060 OH* 18 36 20.00808 -07 11 49.9812           O-rich 1 0
36 OH 024.726-00.030 OH* 18 36 30.11520 -07 18 47.3472           O-rich 1 0
37 OH 024.7-00.1 OH* 18 36 45.91944 -07 18 18.1152           O-rich 21 0
38 OH 025.2+00.1 OH* 18 36 57.99120 -06 53 24.9720           O-rich 11 0
39 IRAS 18345-0701 OH* 18 37 13.42296 -06 59 02.5836           O-rich 5 0
40 OH 024.993-00.150 OH* 18 37 25.35504 -07 07 45.9444           O-rich 4 0
41 OH 025.284-00.156 s*r 18 37 58.9032419208 -06 52 32.084468688           M3I 13 0
42 OH 029.938-00.062 Mas 18 46 12.29 -02 41 21.0           ~ 1 0
43 IRAS 18437-0302 AB* 18 46 23.76480 -02 59 21.6924           O-rich 3 0
44 IRAS 18439-0236 OH* 18 46 33.35856 -02 33 12.9096           O-rich 2 0
45 OH 030.1-00.2 OH* 18 47 09.85344 -02 35 36.0492           O-rich 55 0

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