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OH
SZY95A - A survey of main-line OH maser emission from semiregular variables.
Interferometry data
Short title
: Szymczak et al. (1995A)
Authors
: Szymczak, M. Le Squeren, A. M. Sivagnanam, P. Tran Minh, F. Fournier, A.
Journal
: Astronomy and Astrophysics, v.297, p.494
Bibcode
:
1995A&A...297..494S
BiBTeX
Abstract
We have made a high sensitivity (~0.15Jy) search in the OH main-lines for maser emission from a sample of 181 semiregular variables. OH emission was observed towards five stars. Two new OH lines were detected and one tentatively. About 10% of semiregulars with distances less than 300pc have associated OH maser emission. The OH semiregulars show much redder near and far infrared colors than similar non-OH stars. On the average, their mass loss rates and OH luminosities are slightly lower than in the long period Mira variables. Basing on the optical and infrared properties of the semiregulars and long period variables we confirmed that properties of the SRa stars are intermediate between those of SRb and Mira variables. The occurrence of strongly polarized, low luminosity OH main-line maser only, together with relatively low efficiency of pumping by the infrared photons, provides evidence that the semiregulars are less evolved than the Mira-type variables. This can support the existence of an evolutionary sequence of SRb-SRa-Mira variables. However, the expansion velocities of some OH semiregulars are higher than those observed in most type I OH Miras and their pulsational properties may suggest that they are in a peculiar evolutionary phase.
Comments:
Velocity resolution: 0.56 km/s
Upper limit for non-detections: 0.15 Jy (3σ)
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Table (CSV)
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Detection table from Szymczak et al. (1995A)
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individual components
ID
Obs. RA
Obs. Dec
l
b
Source name
Frequency
V
low
V
up
V
peak
V
peak(2)
F
peak
F
peak(2)
List
Ref.
(J2000)
(J2000)
(deg.)
(deg.)
(MHz)
(km/s)
(km/s)
(km/s)
(km/s)
(Jy)
(Jy)
1
07 55 40.4
-28 38 56
245.438221
-0.146964
IRAS 07536-2830
1665
34.3
34.3
0.300
ENG15
SZY95A
2
07 55 40.4
-28 38 56
245.438221
-0.146964
IRAS 07536-2830
1667
34.3
34.3
0.700
ENG15
SZY95A
3
11 00 33.5
-18 19 27
269.267575
37.195651
IRAS 10580-1803
1665
1.7
1.7
2.500
ENG15
SZY95A
4
11 00 33.5
-18 19 27
269.267575
37.195651
IRAS 10580-1803
1667
1.7
19.7
1.7
19.7
4.500
0.2
ENG15
SZY95A
5
13 02 38.1
+05 11 08
310.358355
67.895706
IRAS 13001+0527
1665
11.2
23.6
11.2
23.6
0.300
1.9
ENG15
SZY95A
6
13 02 38.1
+05 11 08
310.358355
67.895706
IRAS 13001+0527
1667
10.8
24.0
10.8
24.0
3.300
2.6
ENG15
SZY95A
7
13 49 2.4
-28 22 05
318.023907
32.809984
IRAS 13462-2807
1665
33.6
36.3
33.6
36.3
4.900
9.9
ENG15
SZY95A
8
13 49 2.4
-28 22 05
318.023907
32.809984
IRAS 13462-2807
1667
36.1
43.4
36.1
43.4
32.000
7
ENG15
SZY95A
9
14 24 11.2
+25 42 15
34.277868
69.214385
IRAS 14219+2555
1665
-0.2
-0.2
0.400
ENG15
SZY95A
10
22 05 41.6
+35 20 52
88.713383
-16.285059
IRAS 22035+3506
1667
1.4
1.4
0.130
ENG15
SZY95A
Non-detection table from Szymczak et al. (1995A)
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Group name
Different Line detections
IRAS source
IRAS coordinates (RA, Dec)
IRAS source distance (arcsec)
IRAS flux density (F12,F25,F60,F100)
2MASS source
2MASS coordinates (RA, Dec)
2MASS source distance (arcsec)
2MASS magnituted (J,H,K)
GCVS source
GCVS coordinates (RA, Dec)
GCVS source distance (arcsec)
GCVS parameters
WISE source
WISE coordinates (RA, Dec)
WISE source distance (arcsec)
WISE magnitudes (w1, w2, w3, w4)
Akari IRC source
Akari IRC coordinates (RA, Dec)
Akari IRC source distance (arcsec)
Akari IRC fluxes (S09, S18)
Akari FIS source
Akari FIS coordinates (RA, Dec)
Akari FIS source distance (arcsec)
Akari FIS fluxes (S65, S90, S140, S160)
Continuum source
Continuum coordinates (RA, Dec)
Continuum source distance (arcsec)
Continuum parameters
Bolocam GPS
BGPS coordinates (RA, Dec)
BGPS source distance (arcsec)
BGPS parameters
EGO source
EGO coordinates (RA, Dec)
EGO source distance (arcsec)
EGO parameters
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2
O maser detection
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SPIRE color (250-500 um)
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UKIDSS K
2MASS K
select MAX(oh_data.ra_hms) as ra_hms,MAX(oh_data.dec_dms) as dec_dms,MAX(oh_data.source_name) as source_name,MAX(oh_data.ra) as ra,MAX(oh_data.dec) as dec,MAX(oh_data.l) as l,MAX(oh_data.b) as b,MAX(oh_data.vlow) as vlow,MAX(oh_data.vup) as vup,MAX(oh_data.vpeak) as vpeak,MAX(oh_data.vpeak_e) as vpeak_e,MAX(oh_data.vpeak2) as vpeak2,MAX(oh_data.vpeak2_e) as vpeak2_e,MAX(oh_data.dv) as dv,MAX(oh_data.other_name) as other_name,MAX(oh_data.peak) as peak,MAX(oh_data.peak_e) as peak_e,MAX(oh_data.peak2) as peak2,MAX(oh_data.peak2_e) as peak2_e,MAX(oh_data.int) as int,MAX(oh_data.int_e) as int_e,MAX(oh_data.rms) as rms,MAX(oh_data.date) as date,MAX(oh_data.date2) as date2,MAX(oh_data.telescope_ref) as telescope_ref,MAX(oh_data.units) as units,MAX(oh_data.beam) as beam,MAX(oh_data.ref) as ref,MAX(oh_data.list_ref) as list_ref,MAX(oh_data.ascii) as ascii,MAX(oh_data.image) as image,MAX(oh_data.id) as id,MAX(oh_data.date_txt) as date_txt,MAX(oh_data.freq) as freq FROM oh_data WHERE ref ilike 'SZY95A' AND detected=true AND hide=false GROUP BY ref
select oh_data.ra_hms,oh_data.dec_dms,oh_data.source_name,oh_data.ra,oh_data.dec,oh_data.l,oh_data.b,oh_data.vlow,oh_data.vup,oh_data.vpeak,oh_data.vpeak_e,oh_data.vpeak2,oh_data.vpeak2_e,oh_data.dv,oh_data.other_name,oh_data.peak,oh_data.peak_e,oh_data.peak2,oh_data.peak2_e,oh_data.int,oh_data.int_e,oh_data.rms,oh_data.date,oh_data.date2,oh_data.telescope_ref,oh_data.units,oh_data.beam,oh_data.ref,oh_data.list_ref,oh_data.ascii,oh_data.image,oh_data.id,oh_data.date_txt,oh_data.freq FROM oh_data WHERE ref ilike 'SZY95A' AND detected=true AND hide=false ORDER BY detected DESC,id
