VIII/96 6-GHz methanol multibeam maser catalogue (Caswell+, 2010-12)
The 6-GHz methanol multibeam maser catalogue.
I. Galactic centre region, longitudes 345° to 6°.
II. Galactic longitudes 6° to 20°.
III. Galactic longitudes 330° to 345°.
IV. Galactic longitudes 186°-330° including the Orion-Monoceros region.
Caswell J.L., Fuller G.A., Green J.A., Avison A., Breen S.L., Brooks K.J.,
Burton M.G., Chrysostomou A., Cox J., Diamond P.J., Ellingsen S.P.,
Gray M.D., Hoare M.G., Masheder M.R.W., McClure-Griffiths N.M.,
Pestalozzi M.R., Phillips C.J., Quinn L., Thompson M.A., Voronkov M.A.,
Walsh A.J., Ward-Thompson D., Wong-McSweeney D., Yates J.A., Cohen R.J.
<Mon. Not. R. Astron. Soc., 404, 1029-1060 (2010); 409, 913-935 (2010);
417, 1964-1995 (2011); 420, 3108-3125 (2012)>
=2010MNRAS.404.1029C 2010MNRAS.404.1029C
+2010MNRAS.409..913G 2010MNRAS.409..913G
+2011MNRAS.417.1964C 2011MNRAS.417.1964C
+2012MNRAS.420.3108G 2012MNRAS.420.3108G
=2014yCat.8096....0C 2014yCat.8096....0C
ADC_Keywords: Surveys ; Masers ; Radio sources
Keywords: masers - surveys - stars: formation - ISM: molecules
Abstract:
We have conducted a Galactic plane survey of methanol masers at 6668
MHz using a seven-beam receiver on the Parkes telescope, refered to
as MX observations.
Paper I provides sensitive unbiased coverage of a large region around
the Galactic Centre. Details are given for 183 methanol maser sites in
the longitude range 345° through the Galactic Centre to 6°.
Within 6° of the Galactic Centre, we found 88 maser sites, of
which more than half (48) are new discoveries. The masers are confined
to a narrow Galactic latitude range, indicative of many sources at the
Galactic Centre distance and beyond, and confined to a thin disc
population; there is no high-latitude population that might be
ascribed to the Galactic bulge.
Paper II spans the longitude range 6° to 20°. We report the
detection of 119 maser sources, of which 42 are new discoveries.
Paper III covers the longitude range 330°-345°, yielding 198
masers, of which more than 40 per cent are new discoveries.
Paper IV span the longitude range 186°-330°. We report 207
maser detections, 89 new to the survey. This completes the southern
sky part of the methanol multibeam survey and includes a large
proportion of new sources, 43 per cent. We also include results from
blind observations of the Orion-Monoceros star-forming region,
formally outside the latitude range of the methanol multibeam survey;
only the four previously known methanol emitting sites were detected,
of which we present new positions and spectra for masers at Orion A
(south) and Orion B, obtained with the Multi-Element Radio Linked
Interferometer Network (MERLIN) array.
Description:
The detailed plans, strategy, and some sample results from the MMB
survey have been described by Green et al. (2009MNRAS.392..783G 2009MNRAS.392..783G). In
summary, for the present southern sky observations, we first use the
Parkes 64-m radio telescope, equipped with a seven-beam receiver, and
then complement this with accurate position measurements from the
Australia Telescope Compact Array (ATCA).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 114 707 Methanol maser positions observed on Parkes
table2.dat 41 45 Sources associated with the 3-kpc arms as
identified by Green et al. (2009ApJ...696L.156G 2009ApJ...696L.156G)
and Caswell et al. (Paper I, 2010MNRAS.404.1029C 2010MNRAS.404.1029C)
(from Paper II, 2010MNRAS.409..913G 2010MNRAS.409..913G)
notes.dat 80 2408 Individual notes
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Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Name Source name (LLL.lll+BB.BBB)
15 A1 --- f_Name [+a] Flag on Name (1)
17- 18 I2 h RAh Right ascension (J2000) (2)
20- 21 I2 min RAm Right ascension (J2000) (2)
23- 27 F5.2 s RAs Right ascension (J2000) (2)
29 A1 --- DE- Declination sign (J2000) (2)
30- 31 I2 deg DEd Declination (J2000) (2)
33- 34 I2 arcmin DEm Declination (J2000) (2)
36- 39 F4.1 arcsec DEs Declination (J2000) (2)
41- 46 F6.1 km/s VL Lower value of velocity range
49- 54 F6.1 km/s VH Upper value of velocity range
57- 62 F6.1 km/s VpkMX ?=- Peak velocity at 6668MHz from MX spectrum
64 A1 --- l_SpkMX Limit flag on SpkMX
65- 71 F7.2 Jy SpkMX ?=- MX peak flux density at 6668MHz
72 A1 --- f_SpkMX [b] Flag on SpkMK (1)
74- 79 F6.1 km/s VpkSC ?=- Peak velocity at 6668MHz from Survey Cube
81 A1 --- l_SpkSC Limit flag on SpkSC
82- 88 F7.2 Jy SpkSC ?=- Survey cube peak flux density at 6668MHz
90-114 A25 --- Ref References and/or epoch (3)
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Note (1): Flags as follows:
+ = position from single-dish observations only
a = The source is possibly thermal (see main text for details)
b = these were specific epoch MX observation values as the sources were
undetected at other epochs (see individual source notes for details)
Note (2): Position is from non-bracketed reference.
Note (3): Reference abbreviations are as follows:
B02 = Beuther et al. (2002A&A...390..289B 2002A&A...390..289B)
C+95 = Caswell et al. (1995MNRAS.272...96C 1995MNRAS.272...96C)
C2009 = Caswell (2009PASA...26..454C 2009PASA...26..454C, Cat. J/other/PASA/26.454)
C96 = Caswell (1996MNRAS.279...79C 1996MNRAS.279...79C)
C97 = Caswell (1997MNRAS.289..203C 1997MNRAS.289..203C)
CP2008 = Caswell & Phillips (2008MNRAS.386.1521C 2008MNRAS.386.1521C)
CVF95 = Caswell, Vaile & Forster (1995MNRAS.277..210C 1995MNRAS.277..210C)
HW1995 = Houghton & Whiteoak (1995MNRAS.273.1033H 1995MNRAS.273.1033H)
M01 = Minier, Conway & Booth (2001A&A...369..278M 2001A&A...369..278M)
M03 = Minier et al. (2003A&A...403.1095M 2003A&A...403.1095M, Cat. J/A+A/403/1095)
MERLIN = MERLIN observations
P98 = Phillips et al. (1998MNRAS.300.1131P 1998MNRAS.300.1131P)
V05 = Voronkov et al. (2005MNRAS.362..995V 2005MNRAS.362..995V)
W97 = Walsh et al. (1997MNRAS.291..261W 1997MNRAS.291..261W, Cat. J/MNRAS/291/261)
W98 = Walsh et al. (1998MNRAS.301..640W 1998MNRAS.301..640W, Cat. J/MNRAS/301/640)
X08 = Xu et al. (2008A&A...485..729X 2008A&A...485..729X)
X09 = Xu et al. (2009A&A...507.1117X 2009A&A...507.1117X)
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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- 13 A13 --- Name Source name (LLL.lll+B.BBB)
14 A1 --- r_Name [ab] Reference of source (1)
16- 21 F6.1 km/s Vpk Peak velocity at 6668MHz
23- 28 F6.1 km/s Vmid Mean velocity at 6668MHz
30- 36 F7.2 Jy Spk Peak flux density at 6668MHz
38- 41 A4 --- Arm [Far Near] Arm location
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Note (1): For source details see:
a = Caswell et al. (Paper I, 2010MNRAS.404.1029C 2010MNRAS.404.1029C)
b = Green et al. (Paper II, 2010MNRAS.409..913G 2010MNRAS.409..913G)
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Name Source name (LLL.lll+BB.BBB)
16- 80 A65 --- Note Text of the note
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History:
From electronic version of the journal
References:
Caswell et al., Paper I 2010MNRAS.404.1029C 2010MNRAS.404.1029C (Galactic centre and l=345-6)
Green et al., Paper II 2010MNRAS.409..913G 2010MNRAS.409..913G (l=6-20)
Caswell et al., Paper III 2011MNRAS.417.1964C 2011MNRAS.417.1964C (l=330-345)
Green et al., Paper IV 2012MNRAS.420.3108G 2012MNRAS.420.3108G (l=186-330)
(End) Patricia Vannier [CDS] 13-May-2014