2005A&A...433..787J


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.06CET01:59:24

2005A&A...433..787J - Astronomy and Astrophysics, volume 433, 787-795 (2005/4-3)

First microlensing candidate towards M 31 from the Nainital Microlensing Survey.

JOSHI Y.C., PANDEY A.K., NARASIMHA D. and SAGAR R.

Abstract (from CDS):

We report our first microlensing candidate NMS-E1 towards M 31 from the data accumulated during the four years of Nainital Microlensing Survey. Cousin R and I band observations of ∼13'x13' field in the direction of M 31 have been carried out since 1998 and data is analysed using the pixel technique proposed by the AGAPE collaboration. NMS-E1 lies in the disk of M 31 at α=0h43m33.3s and δ=+41°06'44'', about 15.5 arcmin to the South-East direction of the center of M 31. The degenerate Paczynski fit gives a half intensity duration of ∼59-days. The photometric analysis of the candidate shows that it reached R∼20.1mag at the time of maximum brightness and the colour of the source star was estimated to be (R-I)0∼1.1mag. The microlensing candidate is blended by red variable stars; consequently the light curves do not strictly follow the characteristic Paczynski shape and achromatic nature. However its long period monitoring and similar behaviour in R and I bands supports its microlensing nature.

Abstract Copyright:

Journal keyword(s): cosmology: dark matter - Galaxy: halo - galaxies: Local Group - gravitational lensing - methods: data analysis

Nomenclature: NMS EN (No. E1).

Simbad objects: 7

goto Full paper

goto View the reference in ADS

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 MEGA-ML 12 Lev 00 41 26.90 +40 49 42.1           ~ 5 0
2 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10604 1
3 MEGA-ML 16 Lev 00 42 51.42 +41 23 53.7     22.00     ~ 13 0
4 NMS E1 Lev 00 43 33.3 +41 06 44           ~ 3 0
5 MEGA-ML 10 Lev 00 43 54.87 +41 10 33.3           ~ 7 0
6 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5398 1
7 NAME Galactic Bulge reg ~ ~           ~ 3255 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2005A&A...433..787J and select 'bookmark this link' or equivalent in the popup menu


2019.12.06-01:59:24

© Université de Strasbourg/CNRS

    • Contact