Probing MACHOs by observation of M 31 pixel lensing with the 1.5 m Loiano telescope - (Research Note)

S. Calchi Novati; G. Covone; F. De Paolis; M. Dominik; Y. Giraud-Heraud; G. Ingrosso; Ph. Jetzer; L. Mancini; A. Nucita; G. Scarpetta; F. Strafella; A. Gould

doi:10.1051/0004-6361:20077075

Probing MACHOs by observation of M 31 pixel lensing with the 1.5 m Loiano telescope - (Research Note)

S. Calchi Novati, G. Covone, F. De Paolis, M. Dominik, Y. Giraud-Heraud, G. Ingrosso, Ph. Jetzer, L. Mancini, A. Nucita, G. Scarpetta, F. Strafella, A. Gould

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We analyse a series of pilot observations in order to study microlensing of (unresolved) stars in M 31 with the 1.5 m Loiano telescope, including observations on both identified variable source stars and reported microlensing events. We also look for previously unknown variability and discover a nova. We discuss an observing strategy for an extended campaign with the goal of determining whether MACHOs exist or whether all microlensing events are compatible with lens stars in M 31.

Original language	English
Pages (from-to)	115-119
Number of pages	5
Journal	Astronomy & Astrophysics
Volume	469
DOIs	https://doi.org/10.1051/0004-6361:20077075
Publication status	Published - Jul 2007

Keywords

gravitational lensing
Galaxy : Halo
galaxies : individual : M 31
LARGE-MAGELLANIC-CLOUD
MASSIVE VARIABILITY SURVEYS
LIGHT-CURVE CLASSIFICATION
AGAPE MICROLENSING SURVEY
UNRESOLVED STARS
ANDROMEDA GALAXY
NOVA POPULATION
CLASSICAL NOVAE
M31
CANDIDATES

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10.1051/0004-6361:20077075

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title = "Probing MACHOs by observation of M 31 pixel lensing with the 1.5 m Loiano telescope - (Research Note)",

abstract = "We analyse a series of pilot observations in order to study microlensing of (unresolved) stars in M 31 with the 1.5 m Loiano telescope, including observations on both identified variable source stars and reported microlensing events. We also look for previously unknown variability and discover a nova. We discuss an observing strategy for an extended campaign with the goal of determining whether MACHOs exist or whether all microlensing events are compatible with lens stars in M 31.",

keywords = "gravitational lensing, Galaxy : Halo, galaxies : individual : M 31, LARGE-MAGELLANIC-CLOUD, MASSIVE VARIABILITY SURVEYS, LIGHT-CURVE CLASSIFICATION, AGAPE MICROLENSING SURVEY, UNRESOLVED STARS, ANDROMEDA GALAXY, NOVA POPULATION, CLASSICAL NOVAE, M31, CANDIDATES",

author = "{Calchi Novati}, S. and G. Covone and {De Paolis}, F. and M. Dominik and Y. Giraud-Heraud and G. Ingrosso and Ph. Jetzer and L. Mancini and A. Nucita and G. Scarpetta and F. Strafella and A. Gould",

year = "2007",

month = jul,

doi = "10.1051/0004-6361:20077075",

language = "English",

volume = "469",

pages = "115--119",

journal = "Astronomy & Astrophysics",

issn = "0004-6361",

publisher = "EDP SCIENCES S A",

}

TY - JOUR

T1 - Probing MACHOs by observation of M 31 pixel lensing with the 1.5 m Loiano telescope - (Research Note)

AU - Calchi Novati, S.

AU - Covone, G.

AU - De Paolis, F.

AU - Dominik, M.

AU - Giraud-Heraud, Y.

AU - Ingrosso, G.

AU - Jetzer, Ph.

AU - Mancini, L.

AU - Nucita, A.

AU - Scarpetta, G.

AU - Strafella, F.

AU - Gould, A.

PY - 2007/7

Y1 - 2007/7

N2 - We analyse a series of pilot observations in order to study microlensing of (unresolved) stars in M 31 with the 1.5 m Loiano telescope, including observations on both identified variable source stars and reported microlensing events. We also look for previously unknown variability and discover a nova. We discuss an observing strategy for an extended campaign with the goal of determining whether MACHOs exist or whether all microlensing events are compatible with lens stars in M 31.

AB - We analyse a series of pilot observations in order to study microlensing of (unresolved) stars in M 31 with the 1.5 m Loiano telescope, including observations on both identified variable source stars and reported microlensing events. We also look for previously unknown variability and discover a nova. We discuss an observing strategy for an extended campaign with the goal of determining whether MACHOs exist or whether all microlensing events are compatible with lens stars in M 31.

KW - gravitational lensing

KW - Galaxy : Halo

KW - galaxies : individual : M 31

KW - LARGE-MAGELLANIC-CLOUD

KW - MASSIVE VARIABILITY SURVEYS

KW - LIGHT-CURVE CLASSIFICATION

KW - AGAPE MICROLENSING SURVEY

KW - UNRESOLVED STARS

KW - ANDROMEDA GALAXY

KW - NOVA POPULATION

KW - CLASSICAL NOVAE

KW - M31

KW - CANDIDATES

UR - http://www.scopus.com/inward/record.url?scp=34250901173&partnerID=8YFLogxK

U2 - 10.1051/0004-6361:20077075

DO - 10.1051/0004-6361:20077075

M3 - Article

SN - 0004-6361

VL - 469

SP - 115

EP - 119

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

ER -

Probing MACHOs by observation of M 31 pixel lensing with the 1.5 m Loiano telescope - (Research Note)

Abstract

Keywords

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Astrophysics at St Andrews: Astrophysics at St.Andrews

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Probing MACHOs by observation of M 31 pixel lensing with the 1.5 m Loiano telescope - (Research Note)

Abstract

Keywords

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Projects

Astrophysics at St Andrews: Astrophysics at St.Andrews

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