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OH
SEV01B - A Shock-excited OH Maser in a Post-Asymptotic Giant Branch Envelope?
Interferometry data
Short title
: Sevenster & Chapman (2001B)
Authors
: Sevenster, Maartje N. Chapman, Jessica M.
Journal
: The Astrophysical Journal, Volume 546, Issue 2, pp. L119-L122.
Bibcode
:
2001ApJ...546L.119S
Abstract
We have observed a sample of OH 1612 MHz masing objects in all four OH ground-state transitions with the Australia Telescope Compact Array. One likely post-asymptotic giant branch (AGB) object is found to emit in the 1612, 1665, and 1720 MHz transitions. We discuss the evidence that this object may be an early post-AGB object and the possibility for such a circumstellar envelope to harbor a 1720 MHz maser. We argue that during a very brief period, just after the star has left the thermally pulsing phase of the AGB and the wind velocity starts to increase, post-AGB objects might show 1720 MHz emission. The best objects to search for such emission would be those that are masing at 1612 and 1665 MHz, but not at 1667 MHz nor in the 22 GHz H
2
O transition. eprintid: arXiv:astro-ph/0011114
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Detection table from Sevenster & Chapman (2001B)
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Non-detection table from Sevenster & Chapman (2001B)
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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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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.other_name) as other_name,MAX(oh_data.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(oh_data.line) as line,MAX(oh_data.vrange) as vrange,MAX(oh_data.vpeak) as vpeak,MAX(oh_data.peak) as peak,MAX(oh_data.fwhm) as fwhm,MAX(oh_data.int) as int,MAX(oh_data.rms) as rms,MAX(oh_data.units) as units,MAX(oh_data.units_rms) as units_rms,MAX(oh_data.date_txt) as date_txt,MAX(oh_data.telescope_ref) as telescope_ref,MAX(oh_data.beam) as beam,MAX(oh_data.beam_maj) as beam_maj,MAX(oh_data.beam_min) as beam_min,MAX(oh_data.beam_pa) as beam_pa,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.descr) as descr,MAX(oh_data.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(oh_data.dist) as dist,MAX(oh_data.date_txt) as date_txt,MAX(oh_data.freq) as freq FROM oh_data WHERE ref ilike 'SEV01B' 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.other_name,oh_data.other_desc,oh_data.thermal,oh_data.line,oh_data.vrange,oh_data.vpeak,oh_data.peak,oh_data.fwhm,oh_data.int,oh_data.rms,oh_data.units,oh_data.units_rms,oh_data.date_txt,oh_data.telescope_ref,oh_data.beam,oh_data.beam_maj,oh_data.beam_min,oh_data.beam_pa,oh_data.ref,oh_data.list_ref,oh_data.ascii,oh_data.image,oh_data.descr,oh_data.id,oh_data.mjy_flag,oh_data.rms_mjy_flag,oh_data.dist,oh_data.date_txt,oh_data.freq FROM oh_data WHERE ref ilike 'SEV01B' AND detected=true AND hide=false ORDER BY detected DESC,id
