18037-2423 SBE 1 Aa,Ab
18h 03m 40.33s -24° 22' 42.7" P.A. 222.00 sep 0.0 mag 7.60,7.70 Sp O7.5+B0
Coord 2000
18037-2423
Discov num
SBE 1
Comp
Aa,Ab
Coord arcsec 2000
18 03 40.33 -24 22 42.7
Date first
2014
Date last
2014
Obs
1
Pa first
222
Pa last
222
P.A. Now (θ)
222°
Sep first
0.0
Sep last
0.002
Sep. Now (ρ)
0.002"
Mag pri
7.60
Mag sec
7.70
delta mag (ΔM)
0.1
Spectral class
O7.5+B0 (blue/blue-white)
Pri motion ra
+002
Sec motion ra
-008
Pri motion dec
-004
Sec motion dec
+006
Notes
N
K
(See Notes, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
rPM=1.414
This double is not physical.
18037-2423 SYSTEM COMPONENTS
Show
name
SAO
coord
wds_name
last
obs
pa
sep
mag1
mag2
d_mag
orb
current
Show
18 03 40 -24 22 43
SBE 1 Aa,Ab
2014
1
222
0.0
7.60
7.70
0.10
<===
Show
18 03 40 -24 22 43
AEN 1 AB
2007
6
9
3.5
10.30
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation
Sagittarius
Gaia DR2
4066021251107926272
WDS 18037-2423 SBE 1 Aa,Ab : NOTES
discov_num
notes
refcode
SBE 1
Aa,Ab: Herschel 36 is a young massive system located at 1.3kpc in the
Hourglass high-mass star-forming region in the central part of the M8
nebula. The Ab component is comprised of two stars, spectral types O9V
and B0.5V, in a close orbit with period 1.54d. The Aa component is of
type O9.5V, and is the most luminous star of the system, dominating
its ionizing flux. Aa and Ab are in an orbit with estimated period
500d and projected semi-major axis 3.5mas. The minimum spectrosopic
predicted mass of the Aa+Ab1+Ab2 system is 45,2 Msun. Arias et al.
(2010, ApJ 710, L30) label the components A, B1, and B2 in their
spectroscopic study of the system.
SBe2014
REFERENCES
refcode
metd
author
reference
SBe2014
Kv j
Sanchez-Bermudez, J., Alberdi, A., Schodel, R., Hummel, C.A., Arias, J.I.,
2014A&A...572L...1S
SBe2014
Barba, R.H., Maiz Apellaniz, J., & Pott, J.-U.
SBe2014
A&A 572, L1, 2014
DISCOVERER
idgroup
discov
author
1
AEN
Allen, D.A.
WDS HISTORIC DATA
coord_2000
discov_num
comp
epoch
obs
pa
sep
mag_pri
mag_sec
spectr
notes
coord_arcsec_2000
18037-2423
SBE 1
Aa,Ab
2014
1
222
0.0
7.60
7.70
O7.5 B0
N
180340.33-242242.7
If you need more information about this double, apply for a
data request form to the WDS.
WDS 18037-2423 SBE 1 Aa,Ab : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 18037-2423 SBE 1 Aa,Ab : MEASURES
No records found.
WDS 18037-2423 : VIRTUAL EYEPIECE
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
WDS 18037-2423 : ALADIN DSS IMAGE @ 18h 03m 40.33s -24° 22' 42.7"
DSS color
DSS blue
2MASS
AllWISE
GALEX
SDSS9
XMM
PanSTARRS
WDS 18037-2423 SBE 1 Aa,Ab : NEIGHBORHOODS
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Show
name
coord_2000
discov#
comp
pa
sep
dist(')
Show
18037-2423
AEN 1
AB
9
3.5
Show
18037-2423
SBE 1
Aa,Ab
222
0.0
Show
18039-2422
SNA 78
69
0.0
3
Show
18039-2419
SNA 79
81
0.1
6
Show
18044-2421
TDT 662
121
1.8
10
Show
18044-2423
RBR 8
318
3.1
11
Show
18042-2415
BU 1126
AB
55
0.6
12
Show
18042-2415
HJ 5009
AB,C
21
4.6
12
Show
18042-2415
DAW 218
AB,D
138
24.9
12
Show
18047-2421
HJ 5010
351
3.1
15
Show
18026-2415
RST3149
AB
62
1.7
16
Show
18026-2415
ARG 31
AC
26
35.6
16
Show
18026-2415
BU 1462
AD
196
27.3
16
Show
18023-2452
RST3148
135
0.5
35
Show
18061-2412
B 376
AB
97
1.9
35
Show
18061-2412
SNA 81
Aa,Ab
116
0.0
35
Show
18061-2412
SNA 81
AC
225
6.6
35
Show
18061-2412
SNA 81
AD
8
7.9
35
Show
18056-2356
ARA2213
235
14.5
39
Show
18009-2413
RST3147
205
0.2
40
Show
18054-2343
TDT 672
103
1.6
46
Show
18057-2514
OCC1041
AB
-1
0.0
59
Show
18057-2514
OCC1041
AC
-1
0.0
59
Show
18049-2326
ARA2210
145
8.7
60
Show
18005-2341
SKF2528
DE
223
3.0
60
Show
18005-2341
ALD 110
AB
73
3.9
60
Show
18005-2341
SKF2528
AC
19
1.7
60
Show
18005-2341
SKF2528
AD
203
6.5
60
Show
18036-2523
OCC1035
-1
0.0
61
Show
18041-2523
OCC1036
AB
-1
0.0
61
Show
18041-2523
OCC1036
AC
-1
0.0
61
Show
18056-2328
ARA2212
155
10.0
62
Show
17592-2426
RST3143
260
2.5
62
Show
18055-2326
SKF2529
AB
56
1.8
63
Show
18055-2326
SKF2529
AC
271
1.5
63
Show
18055-2326
SKF2529
BC
251
3.1
63
Show
17598-2349
GUL 1
243
3.7
63
Show
18034-2526
OCC1034
-1
0.0
64
Show
18040-2529
HDO 148
15
4.6
67
Show
18004-2333
RST3146
228
0.5
67
Show
18022-2318
B 2851
156
10.5
68
Show
18051-2317
B 375
168
0.9
70
Show
17585-2425
B 366
43
1.5
71
Show
18029-2533
OCC1033
AB
-1
0.0
71
Show
18029-2533
OCC1033
AC
-1
0.1
71
Show
17586-2441
DAM 687
A,BC
205
12.3
71
Show
17586-2441
RST3139
BC
145
1.2
71
Show
18031-2535
RCH 3
359
0.0
73
Show
18064-2525
RCH 6
208
2.3
74
Show
18055-2312
ARA2211
89
10.8
76
Show
18041-2540
OCC1037
-1
0.1
78
WDS 18037-2423 : COMPONENTS
A
Ab
Ab
pa=219.4°
sep=0.00"
B
pa=8.1°
sep=3.53"
pa=8.1°
sep=3.53"
18037-2423 A
Coord arcsec 2000
180340.33-242242.7
Mag
10.3
Spectral class
O7.5 (blue)
PmRA
2.00
PmDE
-4.0
18037-2423 Ab
Coord arcsec 2000
180340.33-242242.7
Mag
7.7
Spectral class
B0 (blue-white)
PmRA
-8.00
PmDE
6.0
Calc delta mag
0.1
Calc coord
yes
18037-2423 B
Coord arcsec 2000
180340.37-242239.2
PmRA
-8.00
PmDE
6.0
Calc delta mag
7.6
Calc coord
yes