2015ApJ...808...55Z

Query : 2015ApJ...808...55Z

2015ApJ...808...55Z - Astrophys. J., 808, 55 (2015/July-3)

Circumstellar magnetite from the LAP 031117 CO3.0 chondrite.

ZEGA T.J., HAENECOUR P., FLOSS C. and STROUD R.M.

Abstract (from CDS):

We report the first microstructural confirmation of circumstellar magnetite, identified in a petrographic thin section of the LaPaz Icefield 031117 CO3.0 chondrite. The O-isotopic composition of the grain indicates an origin in a low-mass (∼2.2 M☉), approximately solar metallicity red/asymptotic giant branch (RGB/AGB) star undergoing first dredge-up. The magnetite is a single crystal measuring 750x670 nm, is free of defects, and is stoichiometric Fe3O4. We hypothesize that the magnetite formed via oxidation of previously condensed Fe dust within the circumstellar envelope of its progenitor star. Using an empirically derived rate constant for this reaction, we calculate that such oxidation could have occurred over timescales ranging from approximately ∼9000-500,000 years. This timescale is within the lifetime of estimates for dust condensation within RGB/AGB stars.

Abstract Copyright: ∼

Journal keyword(s): circumstellar matter - stars: AGB and post-AGB - stars: evolution - stars: formation - stars: fundamental parameters - stars: winds, outflows

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 - 2026 		#notes
1 V* IK Tau OH* 03 53 28.8924743304 +11 24 21.895183368 16.99 14.463 16.171 14.101   M7-11 675 0

Query : 2015ApJ...808...55Z

Basic data :
V* IK Tau -- OH/IR Star
Other object types: otypes_help 		V* (ASAS,ASASSN,...), * (JP11,UCAC4,...), IR (IRAS,IRC,...), Mi* (2017ARep), Mas (OH,[PCC93],...), AB* (1997ApJS), OH* (1990ApJ), smm (JCMTSE), NIR (2MASS), MIR (WISE)
ICRS coord. (ep=J2000) : 		03 53 28.8924743304 +11 24 21.895183368 (Optical) [ 0.2522 0.1678 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		03 50 43.6915614051 +11 15 32.403638259 [ 0.2522 0.1678 90 ]
Gal coord. (ep=J2000) : 		177.9547828207614 -31.4118711059761 [ 0.2522 0.1678 90 ]
Proper motions mas/yr : 		29.249 -24.698 [0.312 0.215 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 46 [~] / z(~) 0.000153 [~] / cz 46.00 [~]
   D 2000MNRAS.317..460F
VLSR : 		36.16 29.9 42.2 [0.46] (Rad) 2021ApJS..253...44R
Parallaxes (mas): 		3.8356 [0.2739] A 2020yCat.1350....0G
Spectral type: 		M7-11 D 1973ApJ...186..989W
Fluxes (11) :
U 16.99 [~] C 2002yCat.2237....0D
B 14.463 [0.05] D 2012yCat.1322....0Z
V 16.171 [0.02] D 2012yCat.1322....0Z
R 14.101 [0.90] E 2012yCat.1322....0Z
G 8.838494 [0.058618] C 2020yCat.1350....0G
J 1.715 [0.226] D 2003yCat.2246....0C
H 0.075 [0.166] D 2003yCat.2246....0C
K -0.935 [0.164] D 2003yCat.2246....0C
g 15.260 [~] D 2020ApJS..249...18C
r 13.142 [0.01] E 2012yCat.1322....0Z
i 9.146 [0.05] D 2012yCat.1322....0Z
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Identifiers (23) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

OH 178.0-31.4 JCMTSE J035328.7+112420 UCAC4 508-006426 [TVH89] 9
ASAS J035329+1124.2 JP11 5529 V* IK Tau [WWV2004] J0353286+112422
ASASSN-V J035328.92+112421.8 2MASS J03532886+1124216 WISE J035328.95+112417.2 AAVSO 0347+11
IRAS F03507+1115 NML Tau ZTF J035328.94+112421.2 Gaia DR3 3303343395568710016
IRAS 03507+1115 RAFGL 529 [LFO93] 0350+11 Gaia DR2 3303343395568710016
IRC +10050 TIC 345457519 [PCC93] 49

References (675 between 1850 and 2026) (Total 675)
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 Description of Measurements

Velocities : 1    Distance : 1    Var : 8    Plx : 2    PM : 2    SpT : 5   

   

Observing logs
Herschel : 29    ISO : 6   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : V* IK Tau

Link by name to the catalogue in VizieR :

IRAS F03507+1115 IRAS 03507+1115 IRC +10050 2MASS J03532886+1124216 RAFGL 529
UCAC4 508-006426 V* IK Tau WISE J035328.95+112417.2 Gaia DR3 3303343395568710016 Gaia DR2 3303343395568710016

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