J/ApJS/258/39 Kepler IRIS cat.: LCs in NGC6791 & NGC6819 fields (Colman+, 2022)
The Kepler IRIS catalog: image subtraction light curves for 9150 stars in and
around the open clusters NGC 6791 and NGC 6819.
Colman I.L., Bedding T.R., Huber D., Kjeldsen H.
<Astrophys. J. Suppl. Ser., 258, 39 (2022)>
=2022ApJS..258...39C 2022ApJS..258...39C
ADC_Keywords: Clusters, open; Photometry; Optical
Keywords: Astronomy databases ; Astronomy data analysis ;
Stellar photometry ; Open star clusters
Abstract:
The four-year Kepler mission collected long-cadence images of the open
clusters NGC 6791 and NGC 6819, known as "superstamps". Each
superstamp region is a 200 pixel square that captures thousands of
cluster members, plus foreground and background stars, of which only
the brightest were targeted for long- or short-cadence photometry
during the Kepler mission. Using image subtraction photometry, we have
produced light curves for every object in the Kepler Input Catalog
that falls on the superstamps. The Increased Resolution Image
Subtraction (IRIS) catalog includes light curves for 9150 stars, and
contains a wealth of new data: 8427 of these stars were not targeted
at all by Kepler, and we have increased the number of available
quarters of long-cadence data for 382 stars. The catalog is available
as a high-level science product on MAST, with both raw photometric
data for each quarter and corrected light curves for all available
quarters for each star. We also present an introduction to our
implementation of image subtraction photometry and the open-source
IRIS pipeline, alongside an overview of the data products,
systematics, and catalog statistics.
Description:
The "increased resolution image subtraction" (IRIS) pipeline, outlined
in Section 2.3, is open source and available on GitHub at
http://github.com/astrobel/kepler_iris. In this paper, we present the
Kepler IRIS Catalog, a collection of Kepler long-cadence light curves
for 5342 stars in the field of NGC6791 and 3808 stars for NGC6819.
These include 8427 KIC entries that were not targeted during the
nominal Kepler mission.
Objects:
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RA (ICRS) DE Designation(s)
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19 20 53 +37 46.7 NGC 6791 = Cl Berkeley 46
19 41 18 +40 11.4 NGC 6819 = Cl Melotte 223
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
kic.dat 74 9150 List of KIC stars; table added by CDS
fits/* . 9150 Individual FITS high-level science product (HLSP)
light curves (stitched)
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See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/A+A/492/171 : VIc light curves of NGC 6791 V20 (Grundahl+, 2008)
J/AJ/138/159 : NGC 6819 stellar radial-velocity & photometry (Hole+, 2009)
J/ApJ/729/L10 : KIC stars properties in NGC 6791 and NGC 6819 (Basu+, 2011)
J/A+A/525/A2 : Eclipsing binaries in NGC6791 (Brogaard+, 2011)
J/AJ/142/112 : KIC photometric calibration (Brown+, 2011)
J/ApJ/733/L9 : Stellar rotation for 71 NGC 6811 members (Meibom+, 2011)
J/AJ/146/58 : Eclipse timings for NGC 6819-259 (Jeffries+, 2013)
J/AJ/148/38 : WIYN open cluster study. LX. NGC 6819 RVs (Milliman+, 2014)
J/AJ/151/66 : Vel. of WOCS 24009 & WOCS 40007 in NGC 6819 (Brewer+, 2016)
J/MNRAS/469/3802 : Binary systems around Kepler red giants (Colman+, 2017)
J/ApJ/851/116 : Long-term var. of Kepler sun-like stars (Montet+, 2017)
J/ApJS/245/13 : CDIPS. I. LCs from TESS sectors 6 and 7 (Bouma+, 2019)
J/A+A/623/A80 : Open clusters in APOGEE and GALAH surveys (Carrera+, 2019)
J/AJ/158/163 : Li abund. values for stars in NGC 6819 (Deliyannis+, 2019)
J/ApJS/244/12 : Variable stars in M4 with K2 LCs (Wallace+, 2019)
J/AJ/161/231 : A list of ∼330000 stars Kepler missed (Wolniewicz+, 2021)
http://archive.stsci.edu/hlsp/iris : Kepler IRIS catalog on MAST
Byte-by-byte Description of file: kic.dat
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Bytes Format Units Label Explanations
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1 - 66 A66 --- FileName Name of the FITS file in subdirectory "fits"
68- 74 I7 --- KIC KIC number
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History:
LCs downloaded from http://archive.stsci.edu/hlsp/iris (Stitched script)
(End) Emmanuelle Perret [CDS] 18-May-2022