2001ApJ...561L..93F

Query : 2001ApJ...561L..93F

2001ApJ...561L..93F - Astrophys. J., 561, L93-L96 (2001/November-1)

The bright optical companion to the eclipsing millisecond pulsar in NGC 6397.

FERRARO F.R., POSSENTI A., D'AMICO N. and SABBI E.

Abstract (from CDS):

We report the optical identification of the companion to the eclipsing millisecond pulsar PSR J1740-5340 in the globular cluster NGC 6397. A bright variable star with an anomalous red color and optical variability (∼0.2 mag) that nicely correlates to the orbital period of the pulsar (∼1.35 days) has been found close to the pulsar position. The peculiar shape of the optical light curves is unprecedented for a millisecond pulsar companion and is a clear signature of tidal distortions.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: Close - Galaxy: Globular Clusters: Individual: NGC Number: NGC 6397 - pulsars: individual (PSR J1740-5340) - Stars: Evolution - Stars: Mass Loss - Stars: Neutron

Nomenclature: Fig.1: [FPD2001] A (Nos A-C).

Simbad objects: 6

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Number of rows : 6
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 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
2 PSR J1740-5340 Psr 17 40 44.589 -53 40 40.90   17.43   16.25   ~ 157 2
3 Cl* NGC 6397 SAW V16 El* 17 40 44.615 -53 40 41.59   17.36 16.65     ~ 22 1
4 V* LY Aqr Psr 20 51 07.52058 -08 27 37.6100           ~ 236 2
5 [FPD2001] B * ~ ~           ~ 1 0
6 [FPD2001] C * ~ ~           ~ 1 0

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