Searching for Planetary Transits in the Field of Open Cluster NGC 6819

RA Street; Keith Douglas Horne; TA Lister; A Penny; Y Tsapras; A Quirrenbach; N Sa zadeh; D Mitchell; J Cooke; Andrew Collier Cameron

Searching for Planetary Transits in the Field of Open Cluster NGC 6819

RA Street, Keith Douglas Horne, TA Lister, A Penny, Y Tsapras, A Quirrenbach, N Sa zadeh, D Mitchell, J Cooke, Andrew Collier Cameron

School of Physics and Astronomy

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

Abstract

We present results from our survey for planetary transits in the field of the intermediate-age (similar to2.5 Gyr), metal-rich ([Fe/H]similar to+0.07) open cluster NGC 6819. We have obtained high-precision time-series photometry for over 38 000 stars in this field and have developed an effective matched-filter algorithm to search for photometric transits. This algorithm identified 8 candidate stars showing multiple transit-like events, plus 3 stars with single eclipses. On closer inspection, while most are shown to be low-mass stellar binaries, some of these events could be the result of brown dwarf companions. The data for one of the single-transit candidates indicate a minimum radius for the companion similar to that of HD 209458b.

Original language	English
Pages (from-to)	1287-1297
Number of pages	11
Journal	Monthly Notices of the Royal Astronomical Society
Volume	340
Issue number	4
Publication status	Published - 21 Apr 2003

Keywords

methods : data analysis
binaries : eclipsing
stars : low-mass, brown dwarfs
planetary systems
open clusters and associations : general
open clusters and associations : individual : NGC 6819
PHOTOMETRY
PROGRAM

Cite this

@article{ee2483aa8d3b46b3b11011b87021bd1a,

title = "Searching for Planetary Transits in the Field of Open Cluster NGC 6819",

abstract = "We present results from our survey for planetary transits in the field of the intermediate-age (similar to2.5 Gyr), metal-rich ([Fe/H]similar to+0.07) open cluster NGC 6819. We have obtained high-precision time-series photometry for over 38 000 stars in this field and have developed an effective matched-filter algorithm to search for photometric transits. This algorithm identified 8 candidate stars showing multiple transit-like events, plus 3 stars with single eclipses. On closer inspection, while most are shown to be low-mass stellar binaries, some of these events could be the result of brown dwarf companions. The data for one of the single-transit candidates indicate a minimum radius for the companion similar to that of HD 209458b.",

keywords = "methods : data analysis, binaries : eclipsing, stars : low-mass, brown dwarfs, planetary systems, open clusters and associations : general, open clusters and associations : individual : NGC 6819, PHOTOMETRY, PROGRAM",

author = "RA Street and Horne, {Keith Douglas} and TA Lister and A Penny and Y Tsapras and A Quirrenbach and {Sa zadeh}, N and D Mitchell and J Cooke and Cameron, {Andrew Collier}",

year = "2003",

month = apr,

day = "21",

language = "English",

volume = "340",

pages = "1287--1297",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

TY - JOUR

T1 - Searching for Planetary Transits in the Field of Open Cluster NGC 6819

AU - Street, RA

AU - Horne, Keith Douglas

AU - Lister, TA

AU - Penny, A

AU - Tsapras, Y

AU - Quirrenbach, A

AU - Sa zadeh, N

AU - Mitchell, D

AU - Cooke, J

AU - Cameron, Andrew Collier

PY - 2003/4/21

Y1 - 2003/4/21

N2 - We present results from our survey for planetary transits in the field of the intermediate-age (similar to2.5 Gyr), metal-rich ([Fe/H]similar to+0.07) open cluster NGC 6819. We have obtained high-precision time-series photometry for over 38 000 stars in this field and have developed an effective matched-filter algorithm to search for photometric transits. This algorithm identified 8 candidate stars showing multiple transit-like events, plus 3 stars with single eclipses. On closer inspection, while most are shown to be low-mass stellar binaries, some of these events could be the result of brown dwarf companions. The data for one of the single-transit candidates indicate a minimum radius for the companion similar to that of HD 209458b.

AB - We present results from our survey for planetary transits in the field of the intermediate-age (similar to2.5 Gyr), metal-rich ([Fe/H]similar to+0.07) open cluster NGC 6819. We have obtained high-precision time-series photometry for over 38 000 stars in this field and have developed an effective matched-filter algorithm to search for photometric transits. This algorithm identified 8 candidate stars showing multiple transit-like events, plus 3 stars with single eclipses. On closer inspection, while most are shown to be low-mass stellar binaries, some of these events could be the result of brown dwarf companions. The data for one of the single-transit candidates indicate a minimum radius for the companion similar to that of HD 209458b.

KW - methods : data analysis

KW - binaries : eclipsing

KW - stars : low-mass, brown dwarfs

KW - planetary systems

KW - open clusters and associations : general

KW - open clusters and associations : individual : NGC 6819

KW - PHOTOMETRY

KW - PROGRAM

UR - http://www.scopus.com/inward/record.url?scp=0142074217&partnerID=8YFLogxK

UR - http://ukads.nottingham.ac.uk/cgi-bin/nph-bib_query?bibcode=2003MNRAS.340.1287S&db_key=AST&high=3ef2e66b4121313

M3 - Article

SN - 0035-8711

VL - 340

SP - 1287

EP - 1297

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

Searching for Planetary Transits in the Field of Open Cluster NGC 6819

Abstract

Keywords

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