2001A&A...379..501H -
Astronomy and Astrophysics, volume 379, 501-514 (2001/11-4)
Qualitative reproduction of stellar H2O maser morphology. I. Results at a single stellar phase.
HUMPHREYS E.M.L., YATES J.A., GRAY M.D., FIELD D. and BOWEN G.H.
Abstract (from CDS):
We attempt to reproduce the observed morphologies of stellar H2O maser emission by combining a hydrodynamic pulsation model of a long-period variable (LPV) star with an H2O maser model. These numerical simulations yield synthetic maser lineshapes and interferometry images as a function of stellar pulsation phase. The results at a single stellar phase are presented here for 22, 321, 325 and 183GHz masers. We compare our simulated data with the observed features of stellar H2O masers, and make predictions of the existence of new masers in the circumstellar environment. We also predict the appearance of 183, 321 and 325GHz maser images which may be observable in future using the Atacama Large Millimetre Array (ALMA). These simulations correctly locate the shell of 22GHz masers in the region of the circumstellar envelope (CE) in which material is being accelerated to form the steadily-outflowing stellar wind.
Abstract Copyright:
∼
Journal keyword(s):
masers - radiative transfer - stars: AGB and post-AGB - stars: mass-loss - hydrodynamics - circumstellar matter
(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases
Other object types:
*
(HD,AG,...),
**
(ADS,CCDM,...),
IR
(DIRBE,IRAS,...),
V*
(ASASSN,V*,...),
Mas
([PCC93],[WCP90],...),
Mi*
(2017ARep),
LP*
(2022yCat),
LP?
(2018A&A),
PM*
(2002A&A),
NIR
(2MASS),
MIR
(WISEA)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
ra dec : right ascension and declination (unit and frame defined according to your Output Options)
Grey values are increasing the original precision due to the computation of frame transformations
(wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
[error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
position angle (in degrees North celestial pole to East)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
ra dec : right ascension and declination (unit and frame defined according to your Output Options)
Grey values are increasing the original precision due to the computation of frame transformations
(wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
[error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
position angle (in degrees North celestial pole to East)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
ra dec : right ascension and declination (unit and frame defined according to your Output Options)
Grey values are increasing the original precision due to the computation of frame transformations
(wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
[error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
position angle (in degrees North celestial pole to East)
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
(redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
[error] : error of the corresponding value displayed before
(wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or '∼'(unknown)
quality : flag of quality ( A=best quality -> E=worst quality, ∼=unknown quality)
References (702 between 1850 and 2024) (Total 702)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow
new references on this object
Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description . Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .
To bookmark this query, right click on this link: simbad:objects in 2001A&A...379..501H and select 'bookmark this link' or equivalent in the popup menu