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NH3
KRA95 - Shock-excited NH 3 (3,3) Masers in the NGC 6334 Star-forming Region
Short title
: Kraemer & Jackson (1995)
Authors
: Kraemer, Kathleen E.Jackson, James M.
Journal
: Astrophysical Journal Letters v.439, p.L9
Bibcode
:
1995ApJ...439L...9K
Target type
: High_mass_SFR
Transitions
: NH3_(3,3)
Abstract
We report the discovery of four NH3 (3, 3) masers in the NGC 6334 star formation region. The masers are found in two of the seven far-infrared continuum sources where high-mass star formation is taking place in this molecular cloud. These masers occur at the ends of high-velocity molecular outflows no maser emission was found near regions without high-velocity outflows. The NH3 masers are not associated with any other type of maser. These results confirm that the NH3 (3, 3) masers are caused by shocks and probably mark the location where the molecular outflow jet impinges upon the ambient medium.
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Detection table from Kraemer & Jackson (1995)
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individual components
ID
Obs. RA
Obs. Dec
l
b
Group id
Source name
Image
Descr.
Line
V
peak
FWHM
F
peak
Telescope
Configuration
V
step
Beam
Detection
Class
Dist. (parallax)
Date
(J2000)
(J2000)
(deg.)
(deg.)
NH
3
(km/s)
(km/s)
(mJy)
(km/s)
(arcsec)
Yes
/
No
(kpc)
1
17 20 53.2
-35 47 2.5
351.4163
0.6454
G351.417+0.645
I ()
Image
Descr
(3,3)
;
8.7 (0.4)
6.20.9
267
NRAOVLA
C/D
2.45
6.2 x 4.1
+H
2
O
+CH
3
OH I
+CH
3
OH II
+OH
SFR_MIXED
1993 October 15-16
2
17 20 52.2
-35 47 15.6
351.4112
0.6464
G351.417+0.645
I (SW)
(3,3)
;
7.3 (0.2)
3.80.3
333
NRAOVLA
C/D
2.45
1.3
+H
2
O
+CH
3
OH I
+CH
3
OH II
+OH
SFR_MIXED
1993 October 15-16
3
17 20 55.7
-35 47 10.8
351.4191
0.6374
G351.417+0.645
I (SE)
(3,3)
;
5.8 (0.1)
4.10.2
238
NRAOVLA
C/D
2.45
1.3
+H
2
O
+CH
3
OH I
+CH
3
OH II
+OH
SFR_MIXED
1993 October 15-16
4
17 20 55.1
-35 46 44.8
351.4240
0.6429
G351.417+0.645
I (NE)
(3,3)
;
6.4 (0.2)
3.30.4
482
NRAOVLA
C/D
2.45
1.8
+H
2
O
+CH
3
OH I
+CH
3
OH II
+OH
SFR_MIXED
1993 October 15-16
5
17 19 57.6
-36 05 31.5
351.0563
0.6234
G351.056+0.623
V (E)
Image
Descr
(3,3)
;
6.5 (1.0)
6.01.0
71
NRAOVLA
C/D
2.45
7.3 x 4.6
1993 October 15-16
6
17 19 55.1
-35 57 36.7
351.1596
0.7058
G351.161+0.699
V (W)
(3,3)
;
7.7 (0.2)
2.60.5
114
NRAOVLA
C/D
2.45
5.1 x 3.3
+H
2
O
+CH
3
OH I
+CH
3
OH II
+OH
SFR_MIXED
1993 October 15-16
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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
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select MAX(nh3_data_all.ra_hms) as ra_hms,MAX(nh3_data_all.dec_dms) as dec_dms,MAX(nh3_data_all.source_name) as source_name,MAX(nh3_data_all.ra) as ra,MAX(nh3_data_all.dec) as dec,MAX(nh3_data_all.l) as l,MAX(nh3_data_all.b) as b,MAX(nh3_data_all.grp) as grp,MAX(nh3_data_all.other_name) as other_name,MAX(nh3_data_all.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(nh3_data_all.line) as line,MAX(nh3_data_all.vrange) as vrange,MAX(nh3_data_all.vpeak) as vpeak,MAX(nh3_data_all.peak) as peak,MAX(nh3_data_all.fwhm) as fwhm,MAX(nh3_data_all.int) as int,MAX(nh3_data_all.rms) as rms,MAX(nh3_data_all.units) as units,MAX(nh3_data_all.units_rms) as units_rms,MAX(nh3_data_all.date_txt) as date_txt,MAX(nh3_data_all.telescope_ref) as telescope_ref,MAX(nh3_data_all.telescope_conf) as telescope_conf,MAX(nh3_data_all.v_step) as v_step,MAX(nh3_data_all.beam) as beam,MAX(nh3_data_all.beam_maj) as beam_maj,MAX(nh3_data_all.beam_min) as beam_min,MAX(nh3_data_all.beam_pa) as beam_pa,MAX(nh3_data_all.ref) as ref,MAX(nh3_data_all.list_ref) as list_ref,MAX(nh3_data_all.ascii) as ascii,MAX(nh3_data_all.url) as url,MAX(nh3_data_all.image) as image,MAX(nh3_data_all.image2) as image2,MAX(nh3_data_all.image3) as image3,MAX(nh3_data_all.descr) as descr,MAX(nh3_data_all.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(nh3_data_all.dist) as dist,1 as dist_parallax,MAX(nh3_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 nh3_data_all LEFT JOIN all_objects_withmet ON nh3_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 nh3_data_all.line=transitions."Line" WHERE ref ilike 'KRA95' AND detected=true AND hide=false GROUP BY ref
select nh3_data_all.ra_hms,nh3_data_all.dec_dms,nh3_data_all.source_name,nh3_data_all.ra,nh3_data_all.dec,nh3_data_all.l,nh3_data_all.b,nh3_data_all.grp,nh3_data_all.other_name,nh3_data_all.other_desc,nh3_data_all.thermal,nh3_data_all.line,nh3_data_all.vrange,nh3_data_all.vpeak,nh3_data_all.peak,nh3_data_all.fwhm,nh3_data_all.int,nh3_data_all.rms,nh3_data_all.units,nh3_data_all.units_rms,nh3_data_all.date_txt,nh3_data_all.telescope_ref,nh3_data_all.telescope_conf,nh3_data_all.v_step,nh3_data_all.beam,nh3_data_all.beam_maj,nh3_data_all.beam_min,nh3_data_all.beam_pa,nh3_data_all.ref,nh3_data_all.list_ref,nh3_data_all.ascii,nh3_data_all.url,nh3_data_all.image,nh3_data_all.image2,nh3_data_all.image3,nh3_data_all.descr,nh3_data_all.id,nh3_data_all.mjy_flag,nh3_data_all.rms_mjy_flag,nh3_data_all.dist,nh3_data_all.dist_parallax,nh3_data_all.date_txt,line_det,type,simbad_types_cat FROM nh3_data_all LEFT JOIN all_objects_withmet ON nh3_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 nh3_data_all.line=transitions."Line" WHERE ref ilike 'KRA95' AND detected=true AND hide=false ORDER BY detected DESC,id
