J/MNRAS/426/3419 UKIDSS GCS Praesepe members (Boudreault+, 2012)
Astrometric and photometric initial mass functions from the UKIDSS
Galactic Clusters Survey. III. Praesepe.
Boudreault S., Lodieu N., Deacon N.R., Hambly N.C.
<Mon. Not. R. Astron. Soc., 426, 3419-3434 (2012)>
=2012MNRAS.426.3419B 2012MNRAS.426.3419B
ADC_Keywords: Clusters, open ; Photometry, infrared ; Proper motions
Keywords: techniques: photometric - brown dwarfs - stars: low-mass -
stars: luminosity function, mass function -
open clusters and associations: individual: Praesepe - infrared: stars
Abstract:
Over the past decades open clusters have been the subject of many
studies. Such studies are crucial considering that the universality of
the initial mass function is still a subject of current
investigations. Praesepe is an interesting open cluster for the study
of the stellar and substellar mass function (MF), considering its
intermediate age and its nearby distance. Here we present the results
of a wide-field, near-infrared study of Praesepe using the Data
Release 9 of the United Kingdom Infrared Telescope Infrared Deep Sky
Survey Galactic Clusters Survey. We obtained cluster candidates of
Praesepe based on a 3σ astrometric and five-band photometric
selection.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 132 1116 Praesepe member candidates based on our astrometric
and photometric selection
table3.dat 49 1116 Physical parameters of the candidates, i.e. mass
and effective temperature
table4.dat 132 18 Praesepe member candidates based on our astrometric
and photometric selection using YJHK photometry
(top lines) and using JHK photometry (last 2 lines)
table6.dat 108 682 Praesepe member candidates identified to have
membership probabilities calculated from proper
motions greater than 0.5
table8.dat 111 9 Seven Praesepe member candidates identified as
likely variables, with two doubtful candidates
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See also:
II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)
I/257 : Proper Motions in Praesepe (Wang+, 1995)
J/A+A/298/115 : ROSAT study of Praesepe (Randish+, 1995)
J/A+AS/109/29 : Very low mass stars in Praesepe (Hambly+, 1995)
J/A+A/354/881 : Praesepe + Hyades Am stars RV (Debernardi+ 200)
J/A+A/375/989 : JHK photometry of Praesepe low-mass stars (Bouvier+, 2001)
J/AJ/124/1570 : JHKs photometry in Praesepe (Adams+, 2002)
J/AJ/134/2340 : Praesepe & Coma Berenices clusters Membership (Kraus+, 2007)
J/A+A/510/A27 : Very low mass stars in Praesepe (Boudreault+, 2010)
J/MNRAS/408/2457 : Low-mass stars and brown dwarfs in Praesepe (Baker+, 2010)
J/MNRAS/413/2218 : Stellar rotation in Hyades and Praesepe (Delorme+, 2011)
J/MNRAS/422/1495 : UKIDSS GCS Pleiades members (Lodieu+ 2012)
J/MNRAS/426/3403 : UKIDSS GCS alpha Persei members (Lodieu+ 2012)
J/MNRAS/431/3222 : UKIDSS GCS Upper Sco members (Lodieu, 2013)
http://www.ukidss.org/surveys/surveys.html : UKIDSS Surveys
Byte-by-byte Description of file: table2.dat table4.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Seq [1/1116]? Sequential number, empty for table4
6- 7 I2 h RAh Right ascension (J2000.0)
9- 10 I2 min RAm Right ascension (J2000.0)
12- 16 F5.2 s RAs Right ascension (J2000.0)
18 A1 --- DE- Declination sign (J2000.0)
19- 20 I2 deg DEd Declination (J2000.0)
22- 23 I2 arcmin DEm Declination (J2000.0)
25- 28 F4.1 arcsec DEs Declination (J2000.0)
29 A1 -- Note [a] Possible multiple (1)
30- 35 F6.3 mag Zmag ?=- UKIDSS Z-band magnitude
37- 41 F5.3 mag e_Zmag ? rms uncertainty on Zmag
43- 48 F6.3 mag Ymag ?=- UKIDSS Y-band magnitude
50- 54 F5.3 mag e_Ymag ? rms uncertainty on Ymag
56- 61 F6.3 mag Jmag UKIDSS J-band magnitude
63- 67 F5.3 mag e_Jmag rms uncertainty on Jmag
69- 74 F6.3 mag Hmag UKIDSS H-band magnitude
76- 80 F5.3 mag e_Hmag rms uncertainty on Hmag
82- 87 F6.3 mag K1mag UKIDSS K-band magnitude from first epoch
89- 93 F5.3 mag e_K1mag rms uncertainty on K1mag
95-100 F6.3 mag K2mag UKIDSS K-band magnitude from second epoch
102-106 F5.3 mag e_K2mag rms uncertainty on K2mag
108-113 F6.2 mas/yr pmRA Proper motion in right ascension
115-119 F5.2 mas/yr e_pmRA Error on the proper motion in right ascension
121-126 F6.2 mas/yr pmDE Proper motion in declination
128-132 F5.2 mas/yr e_pmDE Error on the proper motion in declination
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Note (1): a: A visual inspection of the ZY JHK1K2 images suggests a possible
companion.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Seq [1/1116] Sequential number
6- 7 I2 h RAh Right ascension (J2000.0)
9- 10 I2 min RAm Right ascension (J2000.0)
12- 16 F5.2 s RAs Right ascension (J2000.0)
18 A1 --- DE- Declination sign (J2000.0)
19- 20 I2 deg DEd Declination (J2000.0)
22- 23 I2 arcmin DEm Declination (J2000.0)
25- 28 F4.1 arcsec DEs Declination (J2000.0)
30- 34 F5.3 Msun Mass Mass
36- 40 F5.3 Msun e_Mass rms uncertainty on Mass
42- 45 I4 K Teff Effective temperature
47- 49 I3 K e_Teff ?=- rms uncertainty on Teff
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [UGCS]
6- 25 A20 --- Name UGCS designation, JHHMMSS.ss+DDMMSS.ss
27- 30 F4.2 --- Memb [0/1] Membership probability
32- 37 F6.3 mag Zmag UKIDSS Z magnitude
39- 43 F5.3 mag e_Zmag rms uncertainty on Zmag
45- 50 F6.3 mag Ymag ?=- UKIDSS Y magnitude
52- 56 F5.3 mag e_Ymag ?=- rms uncertainty on Ymag
58- 63 F6.3 mag Jmag UKIDSS J magnitude
65- 69 F5.3 mag e_Jmag rms uncertainty on Jmag
71- 76 F6.3 mag Hmag UKIDSS H magnitude
78- 82 F5.3 mag e_Hmag rms uncertainty on Hmag
84- 89 F6.3 mag K1mag UKIDSS K magnitude from first epoch
91- 95 F5.3 mag e_K1mag rms uncertainty on K1mag
97-102 F6.3 mag K2mag UKIDSS K magnitude from second epoch
104-108 F5.3 mag e_K2mag rms uncertainty on K2mag
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right ascension (J2000.0)
4- 5 I2 min RAm Right ascension (J2000.0)
7- 11 F5.2 s RAs Right ascension (J2000.0)
13 A1 --- DE- Declination sign (J2000.0)
14- 15 I2 deg DEd Declination (J2000.0)
17- 18 I2 arcmin DEm Declination (J2000.0)
20- 23 F4.1 arcsec DEs Declination (J2000.0)
25- 30 F6.3 mag Kmag UKIDSS K magnitude
32- 36 F5.3 mag e_Kmag rms uncertainty on Kmag
38- 43 F6.3 mag K1-K2 K1-K2 magnitude difference
45-111 A67 --- Com Comments on each object after visual inspection
of the UKIDSS ZYJHK1K2 images
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History:
From electronic version of the journal
References:
Lodieu et al., Paper I 2012MNRAS.422.1495L 2012MNRAS.422.1495L, Cat. J/MNRAS/422/1495
Lodieu et al., Paper II 2012MNRAS.426.3403L 2012MNRAS.426.3403L, Cat. J/MNRAS/426/3403
Lodieu et al., Paper IV 2013MNRAS.431.3222L 2013MNRAS.431.3222L, Cat. J/MNRAS/431/3222
(End) Patricia Vannier [CDS] 25-Apr-2013