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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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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
#
Location
Source name
Image
Line
V
peak
F
peak
∫F dv
Telescope
Beam
Detection
Type
Date
(J2000)
(J2000)
(arcsec)
(arcsec)
(deg.)
(deg.)
CH
3
OH (class I)
(km/s)
(Jy/beam)
(Jy/beam*km/s)
(arcsec)
Yes
/
No
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
-9.6012 as
-2.4992 as
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
-8.7012 as
-2.2992 as
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
-6.7512 as
-3.9992 as
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
-6.0012 as
-3.7992 as
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
-5.1012 as
-2.8992 as
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
-4.3512 as
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
-3.7512 as
-2.3992 as
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
-3.3012 as
-1.5992 as
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
-2.8512 as
-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
-2.7012 as
5.5008 as
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
-2.1012 as
-1.7992 as
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
-1.5012 as
1.6008 as
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
-1.0512 as
-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
-1.0512 as
2.8008 as
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
3.0008 as
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
-2.9992 as
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
-2.7992 as
31.411606
0.305751
17
15b
G31.41+0.31
86.2(1.3)
34(4)
1212(12)
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X
DSS colored
2MASS colored
WISE colored
SDSS color
IRAC color I1,I2,I4
GLIMPSE 360
PACS color (70-160 um)
SPIRE color (250-500 um)
NVSS (1.4GHz)
ATLASGAL 870 um
ATLASGAL 870 um + Planck
Bolocam 1.1 mm
UKIDSS K
2MASS K
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.image) as image,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,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.image,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.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
