2004ApJ...612.1060S


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.27CEST07:42:13

2004ApJ...612.1060S - Astrophys. J., 612, 1060-1064 (2004/September-2)

Why a single-star model cannot explain the bipolar nebula of η Carinae.

SOKER N.

Abstract (from CDS):

I examine the angular momentum evolution during the 1837-1856 Great Eruption of the massive star η Carinae. I find that the new estimate of the mass blown during that eruption implies that the envelope of η Car substantially spun down during the 20 yr eruption. Single-star models, most of which require the envelope to rotate at close to the break-up velocity, cannot account for the bipolar nebula–the Homunculus–formed from matter expelled in that eruption. The kinetic energy and momentum of the Homunculus further constrain single-star models. I discuss how η Car can fit into a unified model for the formation of bipolar lobes in which two oppositely ejected jets inflate two lobes (or bubbles). These jets are blown by an accretion disk, which requires stellar companions in the case of bipolar nebulae around stellar objects.

Abstract Copyright:

Journal keyword(s): Stars: Binaries: Close - Stars: Circumstellar Matter - Stars: Individual: Constellation Name: η Carinae - Stars: Mass Loss - Stars: Winds, Outflows

Status at CDS:  

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 1931 1
2 NGC 2346 PN 07 09 22.5216571385 -00 48 23.611157830   11.76 11.58     A5V 551 0
3 ACO 780 ClG 09 18 30 -12 15.7           ~ 425 0
4 NGC 3372 HII 10 44 19.0 -59 53 21           ~ 883 2
5 * eta Car Em* 10 45 03.5455050 -59 41 03.951060 6.37 7.034 6.21 4.90 4.41 OBepec 2188 0
6 M 97 PN 11 14 47.7125021184 +55 01 08.485325068   15.414 15.777 15.960 16.194 ~ 329 1
7 WRAY 16-147 Sy* 14 11 52.0611401558 -51 26 24.183936749     14.20     ~ 220 1

    Equat.    Gal    SGal    Ecl

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2020.05.27-07:42:13

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