2020ApJ...905L..21U

Query : 2020ApJ...905L..21U

2020ApJ...905L..21U - Astrophys. J., 905, L21-L21 (2020/December-3)

Pulsational pair-instability and the mass gap of Population III black holes: effects of overshooting.

UMEDA H., YOSHIDA T., NAGELE C. and TAKAHASHI K.

Abstract (from CDS):

Since the discovery of GW190521, several proposals have been put forward to explain the formation of a black hole (BH) in the mass gap caused by (pulsational) pair-instability (PPI), M = 65-130 M☉. We calculate the mass ejection of Population III stars by the PPI process using a stellar evolution and hydrodynamical code. If a relatively small, but reasonable, value is adopted for the overshooting parameter, the stars do not become red supergiants during the PPI phase. We show that in this case most of the hydrogen envelope remains after the mass ejection by PPI. We find that the BH mass could be at most around 110 M☉ below the mass range of pair-instability supernovae.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Stellar evolution - Massive stars - Stellar mass loss - Population III stars - Black holes

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 GrW 190521 GWE ~ ~           ~ 409 0

Query : 2020ApJ...905L..21U

Basic data :
GrW 190521 -- Gravitational Wave Event
Other object types: otypes_help 		GWE (GrW)
ICRS coord. (ep=J2000) : 		No Coord.

Identifiers (2) :
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GrW 190521 030229 GrW 190521

References (409 between 1850 and 2026) (Total 409)
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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