2014MNRAS.442L...5M

Query : 2014MNRAS.442L...5M

2014MNRAS.442L...5M - Mon. Not. R. Astron. Soc., 442, L5-L8 (2014/July-3)

Destruction of wide binary stars in low-mass elliptical galaxies: implications for initial mass function estimates.

MACCARONE T.J.

Abstract (from CDS):

We discuss the effects of destruction of wide binaries in the nuclei of the lower mass giant elliptical galaxies. We show that the numbers of barium stars and extrinsic S stars should be dramatically reduced in these galaxies compared to what is seen in the largest elliptical galaxies. Given that the extrinsic S stars show strong Wing-Ford band and Nai D absorption, we argue that the recent claims of different initial mass functions from the most massive elliptical galaxies versus lower mass ellipticals may be the result of extrinsic S stars, rather than bottom-heavy initial mass function.

Abstract Copyright: © 2014 The Author Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): stars: chemically peculiar - supernovae: general - galaxies: stellar content

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 - 2026 		#notes
1 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 * rho02 Ari LP* 02 55 48.4979998 +18 19 53.902936 8.56 7.44 5.93 3.51 1.34 M6-III: 232 0
3 V* SU Mon S* 07 42 17.4566221488 -10 52 47.207840772   11.3 9.60     S5-6/7 56 0
4 NGC 4458 GiP 12 28 57.5613938232 +13 14 30.946545276 13.27 12.93 12.07     ~ 429 2
5 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
6 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
7 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0

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