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J/MNRAS/463/1780     Exoplanet candidates in Praesepe (M 44) (Libralato+, 2016)

A PSF-based approach to Kepler/K2 data. II. Exoplanet candidates in Praesepe (M 44). Libralato M., Nardiello D., Bedin L.R., Borsato L., Granata V., Malavolta L., Piotto G., Ochner P., Cunial A., Nascimbeni V. <Mon. Not. R. Astron. Soc., 463, 1780-1796 (2016)> =2016MNRAS.463.1780L (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open ; Stars, double and multiple ; Planets ; Exoplanets ; Photometry Keywords: techniques: image processing - techniques: photometric - binaries: general - planetary systems - stars: variables: general - open clusters and associations: individual: NGC 2632 (M 44) Abstract: In this work we keep pushing K2 data to a high photometric precision, close to that of the Kepler main mission, using a PSF-based, neighbour-subtraction technique, which also overcome the dilution effects in crowded environments. We analyse the open cluster M 44 (NGC 2632), observed during the K2 Campaign 5, and extract light curves of stars imaged on module 14, where most of the cluster lies. We present two candidate exoplanets hosted by cluster members and five by field stars. As a by-product of our investigation, we find 1680 eclipsing binaries and variable stars, 1071 of which are new discoveries. Among them, we report the presence of a heartbeat binary star. Together with this work, we release to the community a catalogue with the variable stars and the candidate exoplanets found, as well as all our raw and detrended light curves. Description: We observed M 44 in seven nights (between 2015 March 27 and April 22) using the Asiago 67/92 cm Schmidt telescope on Mount Ekar. A SBIG STL-11000M camera, equipped with a Kodak KAI-11000M detector (4050x2672-pixel2 with a pixel scale of 0.8625-arcsec/pixel), is placed at the focus of the telescope and covers a field of view (FoV) of about 58x38-arcmin2. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 117 24462 M 44 input catalogue table4.dat 61 1680 Variable/exoplanet catalogue list.dat 112 4 List of fits images fits/* 0 4 Individual fits images lc/* 201 2199 Individual light curves
See also: J/MNRAS/463/1831 : Exoplanet candidates in M 67 (NGC 2682) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 9 F9.5 deg RAdeg Right ascension (J2000) 11- 20 F10.6 deg DEdeg Declination (J2000) 22- 29 F8.4 mag Nmag ?=-99.9999 Instrumental "white light" magnitude 31- 38 F8.4 mag Bmag ?=-99.9999 Calibrated B magnitude 40- 47 F8.4 mag Rmag ?=-99.9999 Calibrated R magnitude 49- 56 F8.4 mag Imag ?=-99.9999 Calibrated I magnitude 58- 65 F8.4 mag Jmag ?=-99.9999 Calibrated 2MASS J magnitude 67- 74 F8.4 mag Hmag ?=-99.9999 Calibrated 2MASS H magnitude 76- 83 F8.4 mag Kmag ?=-99.9999 Calibrated 2MASS H magnitude 85- 91 F7.2 mas/yr pmRA ?=-999.99 Proper motion along RA (pmRA*cosDE) 93- 99 F7.2 mas/yr pmDE ?=-999.99 Proper motion along DE 101-108 F8.4 mag Kpmag ?=-99.9999 Instrumental Kepler magnitude 110-114 I05 --- ID ID number of the star in the corresponding mAIC 116-117 I2 --- K2ch ?=0 K2 channel number
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 5 I05 --- ID ID number 7- 8 I2 --- K2ch K2 channel number 10- 16 F7.4 mag Kpmag Kepler magnitude 18- 28 F11.8 d Per Period (1) 30 I1 --- Flag [1/3] Light-curve classification flag (2) 32- 46 A15 --- Ref Reference for catalogues in the literature that already analysed the object (3) 48- 61 A14 --- Name EPIC or ESPG name if the star hosts one of the candidate exoplanets listed in Tables 1 and 2
Note (1): If Period = 74.82 d, the star could be either irregular/long-period variable or the observed variability is due to a systematic effect. Note (2): Flag as follows: 1 = candidate variable 2 = 'difficult-interpretation' object 3 = possible blend Note (3): References as follows: 1 = Agueros et al. (2011ApJ...740..110A) 2 = Bouvier et al. (2001, Cat. J/A+A/375/989) 3 = Breger et al. (2012AN....333..131B) 4 = Casewell et al. (2012ApJ...759L..34C) 5 = Delorme et al. (2011, Cat. J/MNRAS/413/2218) 6 = Douglas et al. (2014, Cat. J/ApJ/795/161) 7 = Drake et al. (2014, Cat. J/ApJS/213/9) 8 = Kovacs et al. (2014, Cat. J/MNRAS/442/2081) 9 = Li (2007AJ....133..518L) 10 = Liu et al. (2007PASJ...59..607L) 11 = Malavolta et al. (2016, Cat. J/A+A/588/A118) 12 = Mermilliod et al. (2009, Cat. J/A+A/498/949) 13 = Pepper et al. (2008, Cat. J/AJ/135/907) 14 = Quinn et al. (2012, Cat. J/ApJ/756/L33) 15 = Scholz et al. (2011MNRAS.413.2595S) 16 = GCVS (Samues et al., Cat. B/gcvs) 17 = VSX (Watson et al., Cat. B/vsx)
Byte-by-byte Description of file: list.dat
Bytes Format Units Label Explanations
1- 9 F9.5 deg RAdeg Right Ascension of center (J2000) 10- 18 F9.5 deg DEdeg Declination of center (J2000) 20- 23 F4.2 arcsec/pix scale Scale of the image 25- 28 I4 --- Nx Number of pixels along X-axis 30- 33 I4 --- Ny Number of pixels along Y-axis 35- 38 I4 Kibyte size Size of FITS file 40- 60 A21 --- FileName Name of FITS file, in subdirectory fits 62-112 A51 --- Title Title of the FITS file
Byte-by-byte Description of file: lc/*
Bytes Format Units Label Explanations
5- 21 F17.9 d Time Average BJD for a given K2 long-cadence reconstructed exposure 25- 36 F12.8 mag M1det Detrended K2 magnitude obtained with 1-pixel aperture photometry 40- 51 F12.8 mag M1raw Raw K2 magnitude obtained with 1-pixel aperture photometry 55- 66 F12.8 mag M2det Detrended K2 magnitude obtained with 1.5-pixel aperture photometry 70- 81 F12.8 mag M2raw Raw K2 magnitude obtained with 1.5-pixel aperture photometry 85- 96 F12.8 mag M3det Detrended K2 magnitude obtained with 2-pixel aperture photometry 100-111 F12.8 mag M3raw Raw K2 magnitude obtained with 2-pixel aperture photometry 115-126 F12.8 mag M4det Detrended K2 magnitude obtained with 2.5-pixel aperture photometry 130-141 F12.8 mag M4raw Raw K2 magnitude obtained with 2.5-pixel aperture photometry 145-156 F12.8 mag MPSFdet Detrended K2 magnitude obtained with PSF-fitting photometry 160-171 F12.8 mag MPSFraw Raw K2 magnitude obtained with PSF-fitting photometry 175-186 F12.4 pix X x position in the corresponding K2 long-cadence reconstructed exposure (in K2 pixel) 190-201 F12.4 pix Y y position in the corresponding K2 long-cadence reconstructed exposure (in K2 pixel)
History: From electronic version of the journal References: Libralato et al., Paper I 2016MNRAS.456.1137L Nardiello et al., Paper III 2016MNRAS.463.1831N, Cat. J/MNRAS/463/1831
(End) Patricia Vannier [CDS] 04-May-2018
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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