J/A+A/597/A90 rho Oph proper motions and photometry (Ducourant+, 2017)
Proper motion survey and kinematic analysis of the rho Ophiuchi embedded
cluster.
Ducourant C., Teixeira R., Krone-Martins A., Bontemps S., Despois D.,
Galli P.A.B., Bouy H., Le Campion J.F., Rapaport M., Cuillandre J.C.
<Astron. Astrophys. 597, A90 (2017)>
=2017A&A...597A..90D 2017A&A...597A..90D (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open ; Positional data ; Photometry, infrared ;
Proper motions
Keywords: proper motion - reference systems - stars: formation -
open cluster and association: individual: rho Ophiuchi
Abstract:
We aim at performing a kinematic census of young stellar objects
(YSOs) in the rho Ophiuchi F core and partially in the E core of the
L1688 dark cloud.
We run a proper motion program at the ESO New Technology Telescope
(NTT) with the Son of ISAAC (SOFI) instrument over nine years in the
near-infrared. We complemented these observations with various public
image databases to enlarge the time base of observations and the field
of investigation to 0.5°x0.5°. We derived positions and
proper motions for 2213 objects. From these, 607 proper motions were
derived from SOFI observations with a ∼1.8mas/yr accuracy while the
remaining objects were measured only from auxiliary data with a mean
precision of about 3mas/yr.
We performed a kinematic analysis of the most accurate proper motions
derived in this work, which allowed us to separate cluster members
from field stars and to derive the mean properties of the cluster.
From the kinematic analysis we derived a list of 68 members and 14
candidate members, comprising 26 new objects with a high membership
probability.
Description:
Tables 6 lists the J,H,Ks photometry for the 68 kinematic members and
14 candidate members of the Rho Ophiuchi core from 2MASS or derived in
this work together with the AllWISE (W1,W2,W3,W4) photometry. Column
(1) provides identifications of the objects. Columns (2,4,6) presents
the J,H,Ks photometry from 2MASS and columns (3,5,7) their associated
standard errors; if predeceded by an asterisk the photometry was
derived in this work. Columns (8, 10, 12) list AllWISE (w1,w2,w3,w4)
photometry unless predeceded by an asterisk (WISE) and columns (9, 11,
13) the associated standard errors.
Tables 7 Lists the 68 members and 14 candidate members, their
astrometric solution and their membership probability. Column (1)
provides identifications of the objects. Columns (2,3) present the
J2000 Right ascension and Declination for the mean epochs given in
columns (7,8) (in years) and column (4) the mean standard error on
position (in mas). Columns (5,6) list the proper motions and internal
standard errors (in mas/yr). Column (9) presents the 2MASS Ks
photometry (*= this work), column (10) lists the number of different
epochs of observations used for the derivation of proper motions,
column (11) the time base of these observations and column (12) the
membership probability.
Tables 8 lists the evolutionary status of the 68 kinematic members and
14 candidate members. Columns (1) and (2) provide identifications of
the objects. Column (3) list the (RA,DE) positions extracted from
table 7, column (4) (status) lists the young stellar object status as
given by CDS-Simbad and Column (5) (Class) the SED class of the object
(classes preceded by an asterisk were assigned in this work). The
corresponding references are given in Column (6) . In Column (7) we
list the spectral type found in the litterature and in Col. (8) the
references. Note . a: this object is classified as class II by
Bontemps et al. (2001, Cat. J/A+A/372/173) but was classified as class
III by our algorithm. b: this object is classified as class I by
Bontemps et al. (2001, Cat. J/A+A/372/173) but was classified as class
II by our algorithm.
Note to all Tables. Objects not detected by 2MASS or WISE were
searched in the 2MASS 6X (Cutri & IPAC/WISE Science Data Center Team
2012, Cat. VII/233) and the UKIDSS (Lawrence et al., 2007, Cat.
II/319) catalogues and attributed their identificators. A local
identificator (BXhhmmss.sss+dddmmss.ss) was attributed to the faintest
source not found in these catalogues.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 123 82 Photometry (J,H,Ks,W1,W2,W3,W4) of 68 members
and 14 candidate members
table7.dat 126 82 Astrometric parameters and membership probability
for 68 members and 14 candidate members
table8.dat 127 82 Evolutionary status of 68 members and 14
candidate members
refs.dat 128 23 References
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See also:
II/311 : WISE All-Sky Data Release (Cutri+ 2012)
II/328 : AllWISE Data Release (Cutri+ 2013)
II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 28 A28 --- Name Name
29 A1 --- f_Jmag [*] Flag on Jmag (G1)
30- 35 F6.3 mag Jmag ? 2MASS J magnitude
37- 41 F5.3 mag e_Jmag ? 2MASS standard e_or on J magnitude
43 A1 --- f_Hmag [*] Flag on Hmag (G1)
44- 49 F6.3 mag Hmag ? 2MASS H magnitude
51- 55 F5.3 mag e_Hmag ? 2MASS standard e_or on H magnitude
57 A1 --- f_Kmag [*] Flag on Kmag (G1)
58- 63 F6.3 mag Kmag 2MASS K magnitude
65- 69 F5.3 mag e_Kmag ? 2MASS standard error on K magnitude
71- 76 F6.3 mag W1mag ? ALLWISE W1 magnitude
78- 82 F5.3 mag e_W1mag ? ALLWISE standard error on W1 magnitude
84- 89 F6.3 mag W2mag ? ALLWISE W2 magnitude
91- 95 F5.3 mag e_W2mag ? ALLWISE standard error on W2 magnitude
97-102 F6.3 mag W3mag ? ALLWISE W3 magnitude
104-108 F5.3 mag e_W3mag ? ALLWISE standard error on W3 magnitude
110-115 F6.3 mag W4mag ? ALLWISE W4 magnitude
117-121 F5.3 mag e_W4mag ? ALLWISE standard error on W4 magnitude
123 A1 --- Memb [M/C] Flag : M=member, C=candidate member
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 28 A28 --- Name Name
30- 31 I2 h RAh Right Ascension (J2000) at epoch EpRA
33- 34 I2 min RAm Right Ascension (J2000)
36- 42 F7.4 s RAs Right Ascension (J2000)
44 A1 --- DE- Declination sign (J2000) at epoch EpDE
45- 46 I2 deg DEd Declination (J2000)
48- 49 I2 arcmin DEm Declination (J2000)
51- 56 F6.3 arcsec DEs Declination (J2000)
58- 59 I2 mas e_pos Standard error on positions
61- 65 F5.1 mas/yr pmRA Proper motion in RA*cos(DE)
67- 70 F4.1 mas/yr e_pmRA Standard error on proper motion
in RA*cos(DEC)
72- 76 F5.1 mas/yr pmDE Proper motion in RA*cos(DE)
78- 81 F4.1 mas/yr e_pmDE Standard error on proper motion in DE
83- 88 F6.1 yr EpRA Mean epoch in RA
90- 95 F6.1 yr EpDE Mean epoch in DE
97 A1 --- f_Ksmag [*] Note on Ksmag (G1)
98-103 F6.3 mag Ksmag 2MASS Ks magnitude
105-109 F5.3 mag e_Ksmag ? Error on Ks magnitude
111-113 I3 --- Nep Number of epochs of observations used
to derive proper motions
115-119 F5.1 yr Tbase Time base of observations used
to derive proper motions
121-124 F4.2 --- Prob Membership probability
126 A1 --- Memb [C/M] Flag : M=member, C=candidate member
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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- 28 A28 --- Name Name
30- 60 A31 --- OName Other name
62- 63 I2 h RAh Right Ascension (J2000) at epoch EpRA
65- 66 I2 min RAm Right Ascension (J2000) at epoch EpRA
68- 74 F7.4 s RAs Right Ascension (J2000) at epoch EpRA
75 A1 --- DE- Declination sign (J2000) at epoch EpDE
76- 77 I2 deg DEd Declination (J2000) at epoch EpDE
79- 80 I2 arcmin DEm Declination (J2000) at epoch EpDE
82- 87 F6.3 arcsec DEs Declination (J2000) at epoch EpDE
89- 94 F6.1 yr EpRA Mean epoch in RA
96-101 F6.1 yr EpDE Mean epoch in DE
103-105 A3 --- Status Young stellar object status as given by
CDS-Simbad
107 A1 --- f_SED [*] Note on SED (1)
108-110 A3 --- SED SED class
111 A1 --- n_SED [ab] Note on SED (2)
113-114 I2 --- r_SED ? Reference for SED
116-123 A8 --- SpType Spectral type found in the litterature
124-125 I2 --- r_SpType ? Reference for SpType
127 A1 --- Memb [M/C] Flag : M=member, C=candidate member
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Note (1): Classes preceded by an asterisk were assigned in this work
Note (2): Note on SED as follows:
a = this object is classified as class II by Bontemps et al. (2001,
Cat. J/A+A/372/173) but was classified as class III by our algorithm
b = this object is classified as class I by Bontemps et al. (2001,
Cat. J/A+A/372/173) but was classified as class II by our algorithm
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference number
4- 22 A19 --- BibCode BibCode
24- 49 A26 --- Aut Author's name
51-128 A78 --- Com Comments
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Global notes:
Note (G1): * when photometry results from this work.
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Acknowledgements:
Christine Ducourant, christine.ducourant(at)u-bordeaux.fr
(End) Patricia Vannier [CDS] 19-Sep-2016