J/other/NewA/36.70 Astrometry of 3 vdBH open clusters (Orellana+, 2015)
A revisit to the regions of some van den Bergh open clusters using photometric
and astrometric parameters.
Orellana R.B., De Biasi M.S., Paiz L.G., Bustos Fierro I.H., Calderon J.H.
<New Astron., 36, 70-79 (2015)>
=2015NewA...36...70O 2015NewA...36...70O
ADC_Keywords: Clusters, open ; Positional data ; Proper motions
Keywords: (Galaxy:) open clusters and associations: general -
(Galaxy:) open clusters and associations: individual
(vdB80, vdB85, vdB130) - astrometry
Abstract:
We present results of a study that combines photometry and astrometry
for the open clusters vdB80, vdB85 and vdB130. We apply a model which
analyses the proper motion distribution and the stellar density to
find the kinematic parameters and stellar membership in the region of
the mentioned open clusters. The astrometric data are obtained from
UCAC4 catalogue.
Description:
The astrometric data used in this paper, stellar position and proper
motion, come from the UCAC4 Catalogue with positions over 113 million
stars and 105 million of them with proper motions.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 85 3 Centre coordinates, mean proper motion, number
of members N and diameters of the clusters
tablea4.dat 70 15 vdB80 astrometric members
tablea5.dat 70 9 vdB85 astrometric members
tablea6.dat 70 9 vdB130 astrometric members
tableb7.dat 41 23 vdB80. Identification of 23 photometric members
determined by Bonatto and Bica
(2009MNRAS.397.1915B 2009MNRAS.397.1915B) in the UCAC4 catalogue
tableb8.dat 37 14 vdB85. Identification of 14 sources from the
1995 1.5m telescope observations made by
Horner et al. (1997, Cat. J/AJ/113/1788) in the
UCAC4 catalogue
tableb9.dat 28 14 vdB130. Identification of 14 photometric members
determined by Racine (1974AJ.....79..945R 1974AJ.....79..945R) in
the UCAC4 catalogue
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See also:
I/322 : UCAC4 Catalogue (Zacharias+, 2012)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Cluster Cluster name
8- 16 F9.5 deg RAdeg Right ascension (J2000)
18- 24 F7.5 deg e_RAdeg rms uncertainty on RAdeg
26- 33 F8.5 deg DEdeg Declination (J2000)
35- 41 F7.5 deg e_DEdeg rms uncertainty on DEdeg
43- 47 F5.2 mas/yr pmRA Proper motion along RA (pmRA*cosDE)
49- 52 F4.2 mas/yr e_pmRA [0.2/0.5] rms uncertainty on pmRA
54- 58 F5.2 mas/yr pmDE Proper motion along DE
60- 63 F4.2 mas/yr e_pmDE [0.2/0.5] rms uncertainty on pmDE
65- 66 I2 --- N [9/15] Number of astrometric members
68- 69 I2 arcmin Diam Diameter
71- 77 A7 --- Tablea Name of the table with astrometric members
79- 85 A7 --- Tableb Name of the table with identifications
with the literature
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Byte-by-byte Description of file: tablea4.dat tablea5.dat tablea6.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq [1/108] Sequential number in cluster
5- 14 A10 --- UCAC4 UCAC4 designation
16- 26 F11.7 deg RAdeg Right ascension (J2000)
28- 30 I3 mas e_RAdeg [3/176] rms uncertainty on RAdeg
32- 42 F11.7 deg DEdeg Declination (J2000)
44- 46 I3 mas e_DEdeg [3/195] rms uncertainty on DEdeg
48- 51 F4.1 mas/yr pmRA Proper motion along RA (pmRA*cosDE)
53- 55 F3.1 mas/yr e_pmRA [0.8/9.9] rms uncertainty on pmRA
57- 60 F4.1 mas/yr pmDE Proper motion along DE
62- 65 F4.1 mas/yr e_pmDE [0.5/25] rms uncertainty on pmDE
67- 70 F4.2 --- PMemb [0.5/1] Membership probability
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Byte-by-byte Description of file: tableb7.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- UCAC4 UCAC4 designation
12- 17 F6.3 mag Jmag J magnitude
19- 23 F5.3 mag J-Ks J-Ks colour index
25- 30 F6.2 mas/yr pmRA Proper motion along RA (pmRA*cosDE)
32- 37 F6.2 mas/yr pmDE Proper motion along DE
39- 41 A3 --- Memb [Yes No] Astrometric member?
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Byte-by-byte Description of file: tableb8.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [HLL97] Name in Horner et al. (1997AJ....113.1788H 1997AJ....113.1788H,
Cat. J/AJ/113/1788)
4 A1 --- n_[HLL97] [abf] Note on [HLL97] (1)
6- 15 A10 --- UCAC4 UCAC4 designation
17- 22 F6.2 arcsec r Radius from HD 289120 (UCAC4 457-022546)
24- 27 F4.1 mas/yr pmRA Proper motion along RA (pmRA*cosDE)
29- 33 F5.1 mas/yr pmDE Proper motion along DE
35- 37 A3 --- Memb [Yes No] Astrometric member?
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Note (1): Notes (from Horner et al. (1997, Cat. J/AJ/113/1788) as follows :
a = nebulous object A
b = HD 289120, the central star illuminating the reflection nebula
f = V507 Mon, spectroscopic binary
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Byte-by-byte Description of file: tableb9.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Name Identification number in Racine
(1974AJ.....79..945R 1974AJ.....79..945R)
4- 13 A10 --- UCAC4 UCAC4 designation
15- 18 F4.1 mas/yr pmRA ?=- Proper motion along RA (pmRA*cosDE)
20- 24 F5.1 mas/yr pmDE ?=- Proper motion along DE
26- 28 A3 --- Memb [Yes No -] Astrometric member?
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 03-Jul-2015