2011MNRAS.416..391F

Query : 2011MNRAS.416..391F

2011MNRAS.416..391F - Mon. Not. R. Astron. Soc., 416, 391-392 (2011/September-1)

Discovery of the nearby F6V star HR 3220 as a field blue straggler.

FUHRMANN K., CHINI R., HOFFMEISTER V.H. and STAHL O.

Abstract (from CDS):

We report the discovery of the nearby single-lined and metal-poor F6V star HR 3220 as a field blue straggler from a basic inconsistency of the τ ≃ 3 Gyr evolutionary age compared to its low iron-to-magnesium abundance ratio which implies that HR 3220 must be instead as old as τ ≃ 10 Gyr. Our finding is corroborated by the observational constraints of the spectroscopic and astrometric P= 899 d orbit, leading to a secondary mass MB ≃ 0.42+0.09_- 0.05M☉_ that matches the Rappaport et al. period-white dwarf mass relation and the case of a mass transfer system.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): blue stragglers - stars: fundamental parameters - stars: individual: HR 3220 - stars: solar-type - white dwarfs

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 Tau ** 05 07 27.0055682766 +18 38 42.179768546 5.79 5.65   4.5   G1V 316 0
2 * alf CMa SB* 06 45 08.91728 -16 42 58.0171 -1.51 -1.46 -1.46 -1.46 -1.43 A0mA1Va 1610 0
3 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1925 0
4 * B Car SB* 08 09 00.6369168474 -61 18 08.545898653   5.163 4.742     F6VFe-0.8CH-0.4 175 0
5 * alf Leo PM* 10 08 22.31099 +11 58 01.9516 0.88 1.24 1.40 1.37 1.47 B8IVn 891 1
6 HD 106516 SB* 12 15 10.55731 -10 18 44.6354 6.44 6.57 6.11     F9VFe-1.7CH-0.7 443 0
7 * del Aqr PM* 22 54 39.0062577912 -15 49 14.950434720 3.41 3.33 3.28 3.21 3.17 A3Vp 165 0

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