1999ApJ...517L..35H

Query : 1999ApJ...517L..35H

1999ApJ...517L..35H - Astrophys. J., 517, L35-L38 (1999/May-3)

MACHO mass determination based on space telescope observation.

HONMA M.

Abstract (from CDS):

We investigate the possibility of lens mass determination for a caustic crossing microlensing event based on a space telescope observation. We demonstrate that the parallax due to the orbital motion of a space telescope causes a periodic fluctuation of the light curve, from which the lens distance can be derived. Since the proper motion of the lens relative to the source is also measurable for a caustic crossing event, one can find a full solution for microlensing properties of the event, including the lens mass. To determine the lens mass with sufficient accuracy, the light curve near the caustic crossing should be observed within uncertainty of ∼1%. We argue that the Hubble Space Telescope observation of the caustic crossing supplied with ground-based observations of the full light curve will enable us to determine the mass of MACHOs, which is crucial for understanding the nature of MACHOs.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Dark Matter - Galaxy: Halo - Galaxy: Structure - Cosmology: Gravitational Lensing - Stars: Low-Mass, Brown Dwarfs

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 MACHO 208.15683.4237 * 00 45 35.3 -72 52 33           ~ 65 0

Query : 1999ApJ...517L..35H

Basic data :
MACHO 208.15683.4237 -- Star
Other object types: otypes_help 		Lev (), * (MACHO)
ICRS coord. (ep=J2000) : 		00 45 35.3 -72 52 33 [ ] D ~
FK4 coord. (ep=B1950 eq=1950) : 		00 43 43.9 -73 08 57 [ ]
Gal coord. (ep=J2000) : 		303.5330 -44.2456 [ ]
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Identifiers (2) :
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MACHO 208.15683.4237 MACHO 98-SMC-1

References (65 between 1850 and 2026) (Total 65)
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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MACHO 208.15683.4237 MACHO 98-SMC-1

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