CDS

2002A&A...385L...1S

Query : 2002A&A...385L...1S

2002A&A...385L...1S - Astronomy and Astrophysics, volume 385, L1-4 (2002/4-1)

Submilliarcsecond-resolution mapping of the 43 GHz SiO maser emission in the bipolar post-AGB nebula OH 231.8+4.2.

SANCHEZ CONTRERAS C., DESMURS J.F., BUJARRABAL V., ALCOLEA J. and COLOMER F.

Abstract (from CDS):

We present ∼0.3milliarcsec-resolution maps of the SiO (v=2, J=1-0) maser emission in the bipolar post-AGB nebula OH 231.8+4.2 obtained with the Very Long Baseline Array. These observations have provided for the first time the structure and kinematics of the close stellar environment in a proto-Planetary Nebula. Our observations reveal the SiO maser emission arising in several bright spots of less than ∼1013cm in size forming a structure elongated in the direction perpendicular to the symmetry axis of the nebula. Such a distribution is consistent with an equatorial torus with a radius of ∼6AU around the central star. A complex velocity gradient is found along the torus, which suggests rotation and infall of material towards the star. The rotation and infalling velocities deduced are of the same order and range between ∼7 and ∼10 km.s–1. From our data, we estimate the mass of the SiO torus and the central star, as well as a stringent upper limit to the present stellar mass-loss rate.

Abstract Copyright: ∼

Journal keyword(s): masers - stars: AGB and post-AGB - stars: mass-loss - circumstellar matter - stars: individual: OH 231.8+4.2 - stars: variables: general

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023 		#notes
1 OH 231.8+04.2 OH* 07 42 16.947 -14 42 50.20           M10III+A 530 0

Query : 2002A&A...385L...1S

Basic data :
OH 231.8+04.2 -- OH/IR Star
Origin of the objects types :

(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: 		OH* (), Mas (OH,[PCC93],...), MIR (AKARI,MSX5C,...), IR (GLMP,IRAS,...), Mi* (2003AstL), smm (JCMTSE,JCMTSF), V* (V*), * ([LFO93])
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)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) : 		07 42 16.947 -14 42 50.20 (Middle-IR) [ ] D 2012yCat.2311....0C
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)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) : 		07 39 59.010 -14 35 42.17 [ ]
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)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) : 		231.835226 +04.220231 [ ]
Spectral type is made of 3 parts: %coding is composed of 4 parts :
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality→E=worst quality, {� } =unknown quality %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type: 		M10III+A C 2004ApJ...616..519S
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!). sed-help-icon

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

The count displayed here is the number of children objects.
The list obtained by clicking the button may be larger, as some children may be linked with different references or probability.

%This number is the number of distinct objets linked, by using this button, you will obtain all links (may be more than one) from that object to his children

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The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (23) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

OH 231.87+04.2 JCMTSF J074216.8-144250 OH 231.8+04.2 WISE J074216.94-144250.2
AKARI-IRC-V1 J0742170-144248 MSX5C G231.8348+04.2193 OH 0739-14 [LFO93] 0739-14
AKARI-FIS-V1 J0742166-144247 NAME OH 231.8 RAFGL 5237 [PCC93] 123
GLMP 191 NAME Calabash Nebula V* QX Pup [TVH89] 22
IRAS 07399-1435 NAME Rotten Egg Nebula WB89 1045 [WWW74] G231.8+4.2
JCMTSE J074216.8-144250 OH 231.84+04.22 WISEA J074216.93-144249.7

References (530 between 1850 and 2023) (Total 530)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements


MK : 4   

   

Observing logs


herschel : 48   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : OH 231.8+04.2

Link by name to the catalogue in VizieR :

AKARI-IRC-V1 J0742170-144248 AKARI-FIS-V1 J0742166-144247 GLMP 191 IRAS 07399-1435 MSX5C G231.8348+04.2193
RAFGL 5237 V* QX Pup WISEA J074216.93-144249.7 WISE J074216.94-144250.2

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2023.09.30-08:26:13

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