2019A&A...624A.131J

Query : 2019A&A...624A.131J

2019A&A...624A.131J - Astronomy and Astrophysics, volume 624A131-131 (2019/4-1)

Beryllium-10 production in gaseous protoplanetary disks and implications for the astrophysical setting of refractory inclusions.

JACQUET E.

Abstract (from CDS):

Calcium-aluminum-rich inclusions (CAIs), the oldest known solids of the solar system, show evidence for the past presence of short-lived radionuclide beryllium-10, which was likely produced by spallation during protosolar flares. While such ¹⁰Be production has hitherto been modeled at the inner edge of the protoplanetary disk, I calculate here that spallation at the disk surface may reproduce the measured ¹⁰Be/⁹Be ratios at larger heliocentric distances. Beryllium-10 production in the gas prior to CAI formation would dominate that in the solid. Interestingly, provided the Sun's proton to X-ray output ratio does not decrease strongly, ¹⁰Be/⁹Be at the CAI condensation front would increase with time, explaining the reduced values in a (presumably early) generation of CAIs with nucleosynthetic anomalies. CAIs thus need not have formed very close to the Sun and may have condensed at 0.1-1AU where sufficiently high temperatures originally prevailed.

Abstract Copyright: © E. Jacquet 2019

Journal keyword(s): Sun: flares - meteorites, meteors, meteoroids - accretion, accretion disks - stars: protostars - cosmic rays - X-rays: stars

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	[EC2006] MM12	HII	05 35 13.41015	-05 24 11.1770						~	49	1

Query : 2019A&A...624A.131J

Basic data :

[EC2006] MM12 -- HII Region
Other object types:	`HII ()`, `Rad ([FRM2016],[SEM2016],...)`, `mm ([EC2006])`, `IR ([MWZ90])`
ICRS coord. (ep=J2000) :	`05 35 13.41015 -05 24 11.1770 (Radio) [ ] C 2016ApJ...822...93F`
FK4 coord. (ep=B1950 eq=1950) :	`05 32 45.97040 -05 26 04.7160 [ ]`
Gal coord. (ep=J2000) :	`209.01734855 -19.40141721 [ ]`

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`[EC2006] MM12`	`[MWZ90] OMC-1 FIR 4`	`[ZRK2004] 10`	`[ZRK2004b] 134-411`
`[FRM2016] 121`	`[SEM2016] 229`	`[ZRK2004] 134-411`

References (49 between 1850 and 2026) (Total 49)
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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