Search
References
Objects
User-defined list
Download data
Statistics
Papers & Acknowledgement
Citation tool
☰
Display data from paper
Select data type:
OH
PAL00 - Models of OH Maser Variations in U Herculis
Short title
: Palen & Fix (2000)
Authors
: Palen, Stacy Fix, John D.
Journal
: The Astrophysical Journal, Volume 531, Issue 1, pp. 391-400.
Bibcode
:
2000ApJ...531..391P
Abstract
Arecibo spectra of the main-line OH maser emission from U Her over more than a decade show variations of the OH emission over these timescales. These observations are combined with high spatial resolution VLBA maps to investigate the changes in the velocities of the maser components. Global properties of the dust shell, such as accelerations, variations in the pump, and shellwide magnetic field changes are examined as possibilities and eliminated. A solution to the problem involving plasma turbulence and the local magnetic field is introduced, and the relevant timescales of the turbulence are calculated. The turbulent velocity field causes variations on timescales that are too long (of order centuries), while the turbulent magnetic field causes variations on appropriate timescales of a few years. A line-of-sight model of the turbulence is developed and investigated. The complete exploration of this solution requires extensive theoretical and observational work. Possible avenues of investigation of the plasma turbulence model are presented. eprintid: arXiv:astro-ph/9909380
Comments:
Velocity resolution: 0.05 km/s
Download as
:
Table (CSV)
View as list of objects
Detection table from Palen & Fix (2000)
Export table to csv
Hide
/
Show
individual components
ID
Obs. RA
Obs. Dec
l
b
Group id
Source name
Frequency
V
range
V
peak
F
peak
List
Detection
Class
Dist. (parallax)
Ref.
(J2000)
(J2000)
(deg.)
(deg.)
(MHz)
(km/s)
(km/s)
(Jy)
Yes
/
No
(kpc)
1
16 25 47.5
+18 53 32.9
35.3451
40.3509
G35.345+40.351
U Her
1665
6.3
-17.2
16.200
ENG15
+H
2
O
+OH
+SiO
EVOLVED
PAL00
16 25 47.5
+18 53 32.9
35.3451
40.3509
G35.345+40.351
U Her
1667
9.0
-18.5
20.600
ENG15
+H
2
O
+OH
+SiO
EVOLVED
PAL00
Get selected data
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
Download UKIDSS K FITS
2MASS K
Download 2MASS K FITS
select MAX(oh_data_all.ra_hms) as ra_hms,MAX(oh_data_all.dec_dms) as dec_dms,MAX(oh_data_all.source_name) as source_name,MAX(oh_data_all.ra) as ra,MAX(oh_data_all.dec) as dec,MAX(oh_data_all.l) as l,MAX(oh_data_all.b) as b,MAX(oh_data_all.grp) as grp,MAX(oh_data_all.other_name) as other_name,MAX(oh_data_all.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(oh_data_all.freq) as freq,MAX(oh_data_all.vrange) as vrange,MAX(oh_data_all.vpeak) as vpeak,MAX(oh_data_all.peak) as peak,MAX(oh_data_all.fwhm) as fwhm,MAX(oh_data_all.int) as int,MAX(oh_data_all.rms) as rms,MAX(oh_data_all.units) as units,MAX(oh_data_all.units_rms) as units_rms,MAX(oh_data_all.date_txt) as date_txt,MAX(oh_data_all.telescope_ref) as telescope_ref,MAX(oh_data_all.telescope_conf) as telescope_conf,MAX(oh_data_all.v_step) as v_step,MAX(oh_data_all.beam) as beam,MAX(oh_data_all.beam_maj) as beam_maj,MAX(oh_data_all.beam_min) as beam_min,MAX(oh_data_all.beam_pa) as beam_pa,MAX(oh_data_all.ref) as ref,MAX(oh_data_all.list_ref) as list_ref,MAX(oh_data_all.ascii) as ascii,MAX(oh_data_all.url) as url,MAX(oh_data_all.image) as image,MAX(oh_data_all.image2) as image2,MAX(oh_data_all.image3) as image3,MAX(oh_data_all.descr) as descr,MAX(oh_data_all.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(oh_data_all.dist) as dist,1 as dist_parallax,MAX(oh_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 oh_data_all LEFT JOIN all_objects_withmet ON oh_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 oh_data_all.line=transitions."Line" WHERE ref ilike 'PAL00' AND detected=true AND hide=false GROUP BY ref
select oh_data_all.ra_hms,oh_data_all.dec_dms,oh_data_all.source_name,oh_data_all.ra,oh_data_all.dec,oh_data_all.l,oh_data_all.b,oh_data_all.grp,oh_data_all.other_name,oh_data_all.other_desc,oh_data_all.thermal,oh_data_all.freq,oh_data_all.vrange,oh_data_all.vpeak,oh_data_all.peak,oh_data_all.fwhm,oh_data_all.int,oh_data_all.rms,oh_data_all.units,oh_data_all.units_rms,oh_data_all.date_txt,oh_data_all.telescope_ref,oh_data_all.telescope_conf,oh_data_all.v_step,oh_data_all.beam,oh_data_all.beam_maj,oh_data_all.beam_min,oh_data_all.beam_pa,oh_data_all.ref,oh_data_all.list_ref,oh_data_all.ascii,oh_data_all.url,oh_data_all.image,oh_data_all.image2,oh_data_all.image3,oh_data_all.descr,oh_data_all.id,oh_data_all.mjy_flag,oh_data_all.rms_mjy_flag,oh_data_all.dist,oh_data_all.dist_parallax,oh_data_all.date_txt,line_det,type,simbad_types_cat FROM oh_data_all LEFT JOIN all_objects_withmet ON oh_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 oh_data_all.line=transitions."Line" WHERE ref ilike 'PAL00' AND detected=true AND hide=false ORDER BY detected DESC,id