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H
2
O
BAY17 - H
2
O masers and protoplanetary disk dynamics in IC 1396 N
Interferometry data
Short title
: Bayandina et al. (2017)
Authors
: Bayandina, O. S.Val'tts, I. E.Kurtz, S. E.Rudnitskij, G. M.Alakoz, A. V.
Journal
: Astronomy Reports, Volume 61, Issue 6, pp.487-502
Bibcode
:
2017ARep...61..487B
Target type
: BRC
Abstract
We report H2O maser line observations of the bright-rimmed globule IC 1396 N using a ground-space interferometer with the 10-m RadioAstron radio telescope as the space-based element. The source was not detected on projected baselines >2.3. Earth diameters, which indicates a lower limit on the maser size of L > 0.03 AU and an upper limit on the brightness temperature of 6.25 × 1012 K. Fringe-rate maps are prepared based on data from ground-ground baselines. Positions, velocities and flux densities of maser spots were determined. Multiple low-velocity features from -4.5 km/s to +0.7 km/s are seen, and two high-velocity features of V LSR = -9.4 km/s and V LSR = +4.4 km/s are found at projected distances of 157 AU and 70 AU, respectively, from the strongest low-velocity feature at V LSR = +0.3 km/s. Maser components from the central part of the spectrum fall into four velocity groups but into three spatial groups. Three spatial groups of low-velocity features detected in the 2014 observations are arranged in a linear structure about 200 AU in length. Two of these groups were not detected in 1996 and possibly are jets which formed between 1996 and 2014. The putative jet seems to have changed direction in 18 years, which we explain by the precession of the jet under the influence of the gravity of material surrounding the globule. The jet collimation can be provided by a circumstellar protoplanetary disk. There is a straight line orientation in the
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Detection table from Bayandina et al. (2017)
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individual components
ID
Obs. RA
Obs. Dec
RA offset
Dec offset
l
b
Group id
#
Maser spot
Source name
Image
Descr.
Line
V
peak
F
peak
Epoch
Telescope
Detection
Class
Dist. (parallax)
Date
(J2000)
(J2000)
(mas)
(mas)
(deg.)
(deg.)
H
2
O
(km/s)
(Jy)
#
Yes
/
No
(kpc)
1
+21 40 41.75
+58 16 11.9
99.9818861
4.1709517
G99.982+4.170
IC 1396 N
Image
Descr
22 GHz
;
RA
+H
2
O
+CH
3
OH I
-CH
3
OH II
+OH
GALAXY
Jul - Dec 2014
+21 40 41.755052
+58 16 11.84082
75.9 mas
-59.1 mas
99.981884
4.170932
1
1
IC 1396 N
0.7
0.3
10.10.2014
+21 40 41.7556987
+58 16 11.84912
85.6 mas
-50.8 mas
99.981886
4.170933
2
2
IC 1396 N
0.6
0.5
10.10.2014
+21 40 41.7549853
+58 16 11.84072
74.9 mas
-59.2 mas
99.981883
4.170932
3
3
IC 1396 N
0.5
0.7
10.10.2014
+21 40 41.7552587
+58 16 11.85032
79 mas
-49.6 mas
99.981886
4.170934
4
4
IC 1396 N
0.3
0.8
10.10.2014
+21 40 41.7551053
+58 16 11.84112
76.7 mas
-58.8 mas
99.981884
4.170932
5
5
IC 1396 N
0.2
0.7
10.10.2014
+21 40 41.7558187
+58 16 11.84402
87.4 mas
-55.9 mas
99.981885
4.170932
6
6
IC 1396 N
0.1
0.6
10.10.2014
+21 40 41.7555987
+58 16 11.83832
84.1 mas
-61.6 mas
99.981884
4.170931
7
7
IC 1396 N
0.0
0.5
10.10.2014
+21 40 41.755432
+58 16 11.85052
81.6 mas
-49.4 mas
99.981886
4.170933
8
8
IC 1396 N
-0.1
0.5
10.10.2014
+21 40 41.7555187
+58 16 11.84922
82.9 mas
-50.7 mas
99.981886
4.170933
9
9
IC 1396 N
-0.2
0.5
10.10.2014
+21 40 41.755392
+58 16 11.84202
81 mas
-57.9 mas
99.981884
4.170932
10
10
IC 1396 N
-0.3
0.4
10.10.2014
+21 40 41.7608653
+58 16 11.87642
163.1 mas
-23.5 mas
99.981900
4.170931
11
11
IC 1396 N
-1.2
0.5
10.10.2014
+21 40 41.7608587
+58 16 11.88532
163 mas
-14.6 mas
99.981901
4.170933
12
12
IC 1396 N
-1.3
0.5
10.10.2014
+21 40 41.7610653
+58 16 11.88512
166.1 mas
-14.8 mas
99.981902
4.170933
13
13
IC 1396 N
-1.4
0.6
10.10.2014
+21 40 41.7613653
+58 16 11.88612
170.6 mas
-13.8 mas
99.981902
4.170932
14
14
IC 1396 N
-1.5
0.7
10.10.2014
+21 40 41.7613253
+58 16 11.88242
170 mas
-17.5 mas
99.981902
4.170932
15
15
IC 1396 N
-1.7
0.6
10.10.2014
+21 40 41.7615387
+58 16 11.88862
173.2 mas
-11.3 mas
99.981903
4.170933
16
16
IC 1396 N
-1.8
0.5
10.10.2014
+21 40 41.7616987
+58 16 11.88672
175.6 mas
-13.2 mas
99.981903
4.170932
17
17
IC 1396 N
-1.9
0.4
10.10.2014
+21 40 41.7698253
+58 16 11.97922
297.5 mas
79.3 mas
99.981933
4.170940
18
18
IC 1396 N
-2.1
0.3
10.10.2014
+21 40 41.7695387
+58 16 11.98532
293.2 mas
85.4 mas
99.981934
4.170941
19
19
IC 1396 N
-2.3
0.4
10.10.2014
+21 40 41.769512
+58 16 11.97772
292.8 mas
77.8 mas
99.981933
4.170940
20
20
IC 1396 N
-2.4
0.5
10.10.2014
+21 40 41.7692187
+58 16 11.97642
288.4 mas
76.5 mas
99.981932
4.170940
21
21
IC 1396 N
-2.5
0.4
10.10.2014
+21 40 41.7548453
+58 16 11.84732
72.8 mas
-52.6 mas
99.981884
4.170934
22
22
IC 1396 N
-3.0
0.4
10.10.2014
+21 40 41.7548587
+58 16 11.84432
73 mas
-55.6 mas
99.981884
4.170933
23
23
IC 1396 N
-3.1
0.5
10.10.2014
+21 40 41.754972
+58 16 11.84532
74.7 mas
-54.6 mas
99.981884
4.170933
24
24
IC 1396 N
-3.2
0.6
10.10.2014
+21 40 41.7552853
+58 16 11.85642
79.4 mas
-43.5 mas
99.981887
4.170935
25
25
IC 1396 N
-3.3
0.5
10.10.2014
+21 40 41.7547787
+58 16 11.84082
71.8 mas
-59.1 mas
99.981883
4.170932
26
26
IC 1396 N
-3.4
0.5
10.10.2014
+21 40 41.755052
+58 16 11.84642
75.9 mas
-53.5 mas
99.981885
4.170933
27
27
IC 1396 N
-3.6
0.4
10.10.2014
+21 40 41.7555387
+58 16 11.85182
83.2 mas
-48.1 mas
99.981886
4.170934
28
28
IC 1396 N
-3.7
0.4
10.10.2014
+21 40 41.7555987
+58 16 11.85612
84.1 mas
-43.8 mas
99.981887
4.170934
29
29
IC 1396 N
-4.4
0.3
10.10.2014
+21 40 41.755052
+58 16 11.84382
75.9 mas
-56.1 mas
99.981884
4.170933
30
30
IC 1396 N
-4.5
0.3
10.10.2014
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DSS colored
2MASS colored
WISE colored
PACS color (70-160 um)
SPIRE color (250-500 um)
GLIMPSE 360
SDSS color
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(h2o_data_all.ra_hms) as ra_hms,MAX(h2o_data_all.dec_dms) as dec_dms,MAX(h2o_data_all.source_name) as source_name,MAX(h2o_data_all.ra) as ra,MAX(h2o_data_all.dec) as dec,MAX(h2o_data_all.l) as l,MAX(h2o_data_all.b) as b,MAX(h2o_data_all.grp) as grp,MAX(h2o_data_all.other_name) as other_name,MAX(h2o_data_all.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(h2o_data_all.line) as line,MAX(h2o_data_all.vrange) as vrange,MAX(h2o_data_all.vpeak) as vpeak,MAX(h2o_data_all.peak) as peak,MAX(h2o_data_all.fwhm) as fwhm,MAX(h2o_data_all.int) as int,MAX(h2o_data_all.rms) as rms,MAX(h2o_data_all.units) as units,MAX(h2o_data_all.units_rms) as units_rms,MAX(h2o_data_all.date_txt) as date_txt,MAX(h2o_data_all.telescope_ref) as telescope_ref,MAX(h2o_data_all.telescope_conf) as telescope_conf,MAX(h2o_data_all.v_step) as v_step,MAX(h2o_data_all.beam) as beam,MAX(h2o_data_all.beam_maj) as beam_maj,MAX(h2o_data_all.beam_min) as beam_min,MAX(h2o_data_all.beam_pa) as beam_pa,MAX(h2o_data_all.ref) as ref,MAX(h2o_data_all.list_ref) as list_ref,MAX(h2o_data_all.ascii) as ascii,MAX(h2o_data_all.url) as url,MAX(h2o_data_all.image) as image,MAX(h2o_data_all.image2) as image2,MAX(h2o_data_all.image3) as image3,MAX(h2o_data_all.descr) as descr,MAX(h2o_data_all.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(h2o_data_all.dist) as dist,1 as dist_parallax,MAX(h2o_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 h2o_data_all LEFT JOIN all_objects_withmet ON h2o_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 h2o_data_all.line=transitions."Line" WHERE ref ilike 'BAY17' AND detected=true AND hide=false GROUP BY ref
select h2o_data_all.ra_hms,h2o_data_all.dec_dms,h2o_data_all.source_name,h2o_data_all.ra,h2o_data_all.dec,h2o_data_all.l,h2o_data_all.b,h2o_data_all.grp,h2o_data_all.other_name,h2o_data_all.other_desc,h2o_data_all.thermal,h2o_data_all.line,h2o_data_all.vrange,h2o_data_all.vpeak,h2o_data_all.peak,h2o_data_all.fwhm,h2o_data_all.int,h2o_data_all.rms,h2o_data_all.units,h2o_data_all.units_rms,h2o_data_all.date_txt,h2o_data_all.telescope_ref,h2o_data_all.telescope_conf,h2o_data_all.v_step,h2o_data_all.beam,h2o_data_all.beam_maj,h2o_data_all.beam_min,h2o_data_all.beam_pa,h2o_data_all.ref,h2o_data_all.list_ref,h2o_data_all.ascii,h2o_data_all.url,h2o_data_all.image,h2o_data_all.image2,h2o_data_all.image3,h2o_data_all.descr,h2o_data_all.id,h2o_data_all.mjy_flag,h2o_data_all.rms_mjy_flag,h2o_data_all.dist,h2o_data_all.dist_parallax,h2o_data_all.date_txt,line_det,type,simbad_types_cat FROM h2o_data_all LEFT JOIN all_objects_withmet ON h2o_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 h2o_data_all.line=transitions."Line" WHERE ref ilike 'BAY17' AND detected=true AND hide=false ORDER BY detected DESC,id
