2020ApJ...900..144X

Query : 2020ApJ...900..144X

2020ApJ...900..144X - Astrophys. J., 900, 144-144 (2020/September-2)

Potential impact of fast flavor oscillations on neutrino-driven winds and their nucleosynthesis.

XIONG Z., SIEVERDING A., SEN M. and QIAN Y.-Z.

Abstract (from CDS):

The wind driven by the intense neutrino emission from a protoneutron star (PNS) is an important site for producing nuclei heavier than the Fe group. Because of certain features in the neutrino angular distributions, the so-called fast flavor oscillations may occur very close to the PNS surface, effectively resetting the neutrino luminosities and energy spectra that drive the wind. Using the unoscillated neutrino emission characteristics from two core-collapse supernova simulations representative of relevant progenitors at the lower and higher mass end, we study the potential effects of fast flavor oscillations on neutrino-driven winds and their nucleosynthesis. We find that such oscillations can increase the total mass loss by factors up to ∼1.5-1.7 and lead to significantly more proton-rich conditions. The latter effect can greatly enhance the production of ⁶⁴Zn and the so-called light p-nuclei ⁷⁴Se, ⁷⁸Kr, and ⁸⁴Sr. Implications for abundances in metal-poor stars, Galactic chemical evolution in general, and isotopic anomalies in meteorites are discussed.

Journal keyword(s): Nucleosynthesis - Neutrino oscillations - Supernovae - Explosive nucleosynthesis

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	HE 1327-2326	Pe*	13 30 05.9394958608	-23 41 49.699340844	13.761	14.01	13.55	13.50	12.803	CEMP-no	258	0

Query : 2020ApJ...900..144X

Basic data :

HE 1327-2326 -- Chemically Peculiar Star

C* (), Pe* (2007AJ), * (UCAC3,UCAC4,...), PM* (2018yCat), NIR (2MASS)

13 30 05.9394958608 -23 41 49.699340844 (Optical) [ 0.0138 0.0094 90 ] A 2020yCat.1350....0G

13 27 21.3622779222 -23 26 23.787432989 [ 0.0138 0.0094 90 ]

314.2329858443797 +38.3247512770868 [ 0.0138 0.0094 90 ]

-52.470 45.515 [0.016 0.012 90] A 2020yCat.1350....0G

V(km/s) 61.74 [9.18] / z(spectroscopic) 0.000206 [0.000031] / cz 61.75 [9.18] (Opt) D 2022yCat.1355....0G

0.9411 [0.0154] A 2020yCat.1350....0G

CEMP-no C 2019A&A...623A.128H

U 13.761 [0.021] D 2007ApJS..168..128B

B 14.01 [0.02] D 2012yCat.1322....0Z

V 13.55 [0.05] D 2012yCat.1322....0Z

R 13.50 [0.06] E 2012yCat.1322....0Z

G 13.373862 [0.002764] C 2020yCat.1350....0G

I 12.803 [0.020] D 2007ApJS..168..128B

J 12.357 [0.023] C 2003yCat.2246....0C

H 12.068 [0.023] C 2003yCat.2246....0C

K 11.986 [0.021] C 2003yCat.2246....0C

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`UCAC3 133-153417`	`2MASS J13300595-2341497`	`TIC 423687511`	`Gaia DR2 6194815228636688768`
`HE 1327-2326`	`SPM3.2 4266486`	`UCAC4 332-067468`	`Gaia DR3 6194815228636688768`

References (258 between 1850 and 2026) (Total 258)
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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UCAC3 133-153417 2MASS J13300595-2341497 UCAC4 332-067468 Gaia DR2 6194815228636688768 Gaia DR3 6194815228636688768

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