2008ApJ...680.1132G

Query : 2008ApJ...680.1132G

2008ApJ...680.1132G - Astrophys. J., 680, 1132-1136 (2008/June-3)

A search for 6.7 GHz methanol masers in M33.

GOLDSMITH P.F., PANDIAN J.D. and DESHPANDE A.A.

Abstract (from CDS):

We report the negative results from a search for 6.7 GHz methanol masers in the nearby spiral galaxy M33. We observed 14 GMCs in the central 4 kpc of the Galaxy, and found 3 σ upper limits to the flux density of ∼4 mJy at a velocity resolution of 0.35 km/s. By velocity shifting and combining the spectra from the positions observed, we obtain an effective 3 σ upper limit on the average emission of ∼1 mJy in a 0.25 km/s channel. These limits lie significantly below what we would expect based on our estimates of the methanol maser luminosity function in the Milky Way. One possible explanation for the absence of detectable methanol masers appears to be the metallicity of M33, which is somewhat less than that of the Milky Way.

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Journal keyword(s): Galaxies: Individual: Messier Number: M33 - ISM: (methanol) - ISM: Molecules - Masers

Simbad objects: 21

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Number of rows : 21
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3332 2
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11142 1
3 [GBR2012] 12 MoC 01 33 23.6 +30 25 39           ~ 5 0
4 M33GMC 22 MoC 01 33 41.0 +30 39 14           ~ 19 0
5 [MKT2012] 24 MoC 01 33 46.9 +30 32 41           ~ 6 0
6 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 5834 1
7 M33GMC 86 MoC 01 33 59.0 +30 48 57           ~ 7 0
8 [EPR2003] 13 MoC 01 33 59.1 +30 36 09           ~ 9 0
9 [WS90b] MC 20 MoC 01 34 00.1 +30 40 47           ~ 18 0
10 [EPR2003] 10 MoC 01 34 06.6 +30 47 51           ~ 8 0
11 M33GMC 46 MoC 01 34 08.8 +30 39 11           ~ 9 0
12 M33GMC 91 MoC 01 34 09.3 +30 49 06           ~ 18 0
13 M33GMC 76 MoC 01 34 10.7 +30 36 18           ~ 11 0
14 BCLMP 710 Cl? 01 34 13.666 +30 33 43.35 15.67 15.75 15.90 15.94 16.22 ~ 23 0
15 NGC 604 HII 01 34 32.1 +30 47 01           ~ 586 0
16 [MKT2012] 1 MoC 01 34 33.0 +30 46 47           ~ 25 0
17 [EPR2003] 9 MoC 01 34 34.6 +30 46 17           ~ 21 0
18 [EPR2003] 11 MoC 01 34 38.0 +30 40 29           ~ 6 0
19 IC 342 SBG 03 46 48.514 +68 05 45.98   10.5       ~ 1515 1
20 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 14400 0
21 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1612 0

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