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CH3OH_I
ARA08 - Thermal Methanol Observations of the Outflow from the G31.41+0.31 Hot Molecular Core
Interferometry data
Short title
: Araya et al. (2008)
Authors
: Araya, E. Hofner, P. Kurtz, S. Olmi, L. Linz, H.
Journal
: The Astrophysical Journal, Volume 675, Issue 1, pp. 420-426 (2008).
Bibcode
:
2008ApJ...675..420A
Target type
: High_mass_SFR,Outflows
Transitions
: OH_1665,SiO_1-0v0,CH3OH_9(I),CH3OH_23.4(I),CH3OH_25-30_GHz(I),CH3OH_36(I),CH3OH_44(I),CH3OH_95(I),CH3OH_132(I),CH3OH_6(II),CH3OH_23.1(II)
Abstract
The G31.41+0.31 region hosts one of the most prominent hot molecular cores known. Coincident with the hot molecular core is an outflow whose orientation has been controversial. We report VLA-C observations of thermal methanol (7
0
-6
1
A
+
, 44 GHz) toward the position of the G31.41+0.31 hot molecular core. Our goals are to clarify the orientation of the outflow and to study the properties of a molecular outflow from a very young region of massive star formation. We confirm that the outflow is indeed associated with the hot molecular core. Our observations strongly suggest that the outflow is oriented in the northeast-southwest direction. The outflow is massive (gtrsim15 M
&sun
), with a dynamical time of the order of ~4 × 10
3
yr, and has a wide-angle bipolar morphology.
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:
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Detection table from Araya et al. (2008)
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individual components
ID
Obs. RA
Obs. Dec
RA offset
Dec offset
l
b
Group id
#
Maser spot
Source name
Image
Line
V
peak
F
peak
∫F dv
Telescope
Beam
Detection
Class
Dist. (parallax)
Date
(J2000)
(J2000)
(mas)
(mas)
(deg.)
(deg.)
CH
3
OH (class I)
(km/s)
(Jy/beam)
(Jy/beam*km/s)
(arcsec)
Yes
/
No
(kpc)
1
+18 47 34.6
-01 12 46
31.412393
0.305921
G31.412+0.307
G31.41+0.31
Image
44 GHz (I)
;
NRAOVLA
0.63 x 0.49
+H
2
O
+CH
3
OH I
+CH
3
OH II
+OH
SFR
2004 March 22
+18 47 33.96
-01 12 48.5
-9601.2 mas
-2499.2 mas
31.410559
0.307977
1
1
G31.41+0.31
99.5(1.3)
23(4)
77(7)
+18 47 34.02
-01 12 48.3
-8701.2 mas
-2299.2 mas
31.410722
0.307779
2
2
G31.41+0.31
95.5(1.3)
108(4)
407(8)
+18 47 34.15
-01 12 50
-6751.2 mas
-3999.2 mas
31.410549
0.307082
3
3
G31.41+0.31
92.9(1.3)
34(5)
44(8)
+18 47 34.2
-01 12 49.8
-6001.2 mas
-3799.2 mas
31.410693
0.306922
4
4
G31.41+0.31
94.2(1.3)
419(3)
1265(8)
+18 47 34.26
-01 12 48.9
-5101.2 mas
-2899.2 mas
31.411030
0.306814
5
5
G31.41+0.31
95.5(1.3)
44(4)
133(8)
+18 47 34.31
-01 12 45.9
-4351.2 mas
100.8 mas
31.411867
0.307009
6
HMC
G31.41+0.31
98.05(0.06)
782(13)
6600(104)
+18 47 34.35
-01 12 48.4
-3751.2 mas
-2399.2 mas
31.411325
0.306543
7
6
G31.41+0.31
102.2(1.3)
244(6)
906(11)
+18 47 34.38
-01 12 47.6
-3301.2 mas
-1599.2 mas
31.411579
0.306534
8
7
G31.41+0.31
100.9(1.3)
50(9)
248(11)
+18 47 34.41
-01 12 46.2
-2851.2 mas
-199.2 mas
31.411982
0.306600
9
8
G31.41+0.31
102.2(1.3)
70(6)
165(10)
+18 47 34.42
-01 12 40.5
-2701.2 mas
5500.8 mas
31.413410
0.307285
10
9
G31.41+0.31
100.9(1.3)
32(4)
84(8)
+18 47 34.46
-01 12 47.8
-2101.2 mas
-1799.2 mas
31.411682
0.306212
11
10
G31.41+0.31
100.9(1.3)
96(5)
284(8)
+18 47 34.5
-01 12 44.4
-1501.2 mas
1600.8 mas
31.412598
0.306494
12
11
G31.41+0.31
99.5(1.3)
55(4)
178(8)
+18 47 34.53
-01 12 46.1
-1051.2 mas
-99.2 mas
31.412235
0.306168
13
12
G31.41+0.31
95.5(1.3)
22(4)
52(8)
+18 47 34.53
-01 12 43.2
-1051.2 mas
2800.8 mas
31.412952
0.306535
14
13
G31.41+0.31
102.2(1.3)
52(4)
127(9)
+18 47 34.55
-01 12 43
-751.2 mas
3000.8 mas
31.413039
0.306486
15
14
G31.41+0.31
98.2(1.3)
78(7)
87(8)
+18 47 34.59
-01 12 49
-151.2 mas
-2999.2 mas
31.411632
0.305578
16
15a
G31.41+0.31
99.5(1.3)
381(4)
1763(13)
+18 47 34.55
-01 12 48.8
-751.2 mas
-2799.2 mas
31.411606
0.305751
17
15b
G31.41+0.31
86.2(1.3)
34(4)
1212(12)
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DSS colored
2MASS colored
WISE colored
PACS color (70-160 um)
SPIRE color (250-500 um)
GLIMPSE 360
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IRAC color I1,I2,I4
NVSS (1.4GHz)
ATLASGAL 870 um
ATLASGAL 870 um + Planck
Bolocam 1.1 mm
UKIDSS K
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2MASS K
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select MAX(met1_data_all.ra_hms) as ra_hms,MAX(met1_data_all.dec_dms) as dec_dms,MAX(met1_data_all.source_name) as source_name,MAX(met1_data_all.ra) as ra,MAX(met1_data_all.dec) as dec,MAX(met1_data_all.l) as l,MAX(met1_data_all.b) as b,MAX(met1_data_all.grp) as grp,MAX(met1_data_all.other_name) as other_name,MAX(met1_data_all.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(met1_data_all.line) as line,MAX(met1_data_all.vrange) as vrange,MAX(met1_data_all.vpeak) as vpeak,MAX(met1_data_all.peak) as peak,MAX(met1_data_all.fwhm) as fwhm,MAX(met1_data_all.int) as int,MAX(met1_data_all.rms) as rms,MAX(met1_data_all.units) as units,MAX(met1_data_all.units_rms) as units_rms,MAX(met1_data_all.date_txt) as date_txt,MAX(met1_data_all.telescope_ref) as telescope_ref,MAX(met1_data_all.telescope_conf) as telescope_conf,MAX(met1_data_all.v_step) as v_step,MAX(met1_data_all.beam) as beam,MAX(met1_data_all.beam_maj) as beam_maj,MAX(met1_data_all.beam_min) as beam_min,MAX(met1_data_all.beam_pa) as beam_pa,MAX(met1_data_all.ref) as ref,MAX(met1_data_all.list_ref) as list_ref,MAX(met1_data_all.ascii) as ascii,MAX(met1_data_all.url) as url,MAX(met1_data_all.image) as image,MAX(met1_data_all.image2) as image2,MAX(met1_data_all.image3) as image3,MAX(met1_data_all.descr) as descr,MAX(met1_data_all.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(met1_data_all.dist) as dist,1 as dist_parallax,MAX(met1_data_all.date_txt) as date_txt,MAX(line_det) as line_det,MAX(type) as type,MAX(simbad_types_cat) as simbad_types_cat FROM met1_data_all LEFT JOIN all_objects_withmet ON met1_data_all.grp=all_objects_withmet.group_name LEFT JOIN object_categories ON all_objects_withmet.group_name = object_categories.group_name_cat AND object_categories.tbl_cat = 'all_objects_withmet' LEFT JOIN transitions ON met1_data_all.line=transitions."Line" WHERE ref ilike 'ARA08' AND detected=true AND hide=false GROUP BY ref
select met1_data_all.ra_hms,met1_data_all.dec_dms,met1_data_all.source_name,met1_data_all.ra,met1_data_all.dec,met1_data_all.l,met1_data_all.b,met1_data_all.grp,met1_data_all.other_name,met1_data_all.other_desc,met1_data_all.thermal,met1_data_all.line,met1_data_all.vrange,met1_data_all.vpeak,met1_data_all.peak,met1_data_all.fwhm,met1_data_all.int,met1_data_all.rms,met1_data_all.units,met1_data_all.units_rms,met1_data_all.date_txt,met1_data_all.telescope_ref,met1_data_all.telescope_conf,met1_data_all.v_step,met1_data_all.beam,met1_data_all.beam_maj,met1_data_all.beam_min,met1_data_all.beam_pa,met1_data_all.ref,met1_data_all.list_ref,met1_data_all.ascii,met1_data_all.url,met1_data_all.image,met1_data_all.image2,met1_data_all.image3,met1_data_all.descr,met1_data_all.id,met1_data_all.mjy_flag,met1_data_all.rms_mjy_flag,met1_data_all.dist,met1_data_all.dist_parallax,met1_data_all.date_txt,line_det,type,simbad_types_cat FROM met1_data_all LEFT JOIN all_objects_withmet ON met1_data_all.grp=all_objects_withmet.group_name LEFT JOIN object_categories ON all_objects_withmet.group_name = object_categories.group_name_cat AND object_categories.tbl_cat = 'all_objects_withmet' LEFT JOIN transitions ON met1_data_all.line=transitions."Line" WHERE ref ilike 'ARA08' AND detected=true AND hide=false ORDER BY detected DESC,id
