J/PAZh/38/763 XHIP-II: Clusters and associations (Francis+, 2012)
XHIP-II: Clusters and associations.
Francis C., Anderson E.
<Pis'ma Astron. Zh. 38, 763 (2012)>
=2012PAZh...38..763F 2012PAZh...38..763F
=2012AstL...38..681F 2012AstL...38..681F
ADC_Keywords: Clusters, open ; Stars, distances
Keywords: Open clusters and associations - solar neighbourhood
Abstract:
In the absence of complete kinematic data it has not previously been
possible to furnish accurate lists of member stars for all moving
groups. There has been an unresolved dispute concerning the apparent
inconsistency of the Hipparcos parallax distance to the Pleiades.
To find improved candidate lists for clusters and associations
represented among Hipparcos stars, to establish distances, and to cast
light on the Pleiades distance anomaly.
We use a six dimensional fitting procedure to identify candidates, and
plot CMDs for 20 of the nearest groups. We calculate the mean parallax
distance for all groups.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 75 47 Clusters and associations within 400pc
table2.dat 75 40 More distant clusters and associations
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See also:
B/ocl : Optically visible open clusters and Candidates (Dias+ 2002-12)
V/137 : Extended Hipparcos Compilation (XHIP) (Anderson+, 2012)
J/A+A/438/1163 : Catalogue of Open Cluster Data (COCD) (Kharchenko+, 2005)
J/A+A/440/403 : 109 new Galactic open clusters (Kharchenko+, 2005)
Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- Name Cluster name
20- 22 I3 --- N Number of members (1)
24- 26 I3 --- NvL ? van Leeuwen (2009A&A...497..209V 2009A&A...497..209V)
number of members
28- 31 F4.1 --- Sep Separation parameter, n (2)
33- 38 F6.1 pc RXHIP Cluster distance (1)
40- 45 F6.1 pc e_RXHIP rms uncertainty on RXHIP
47- 51 F5.1 pc RvL ? van Leeuwen (2009A&A...497..209V 2009A&A...497..209V) distance
53- 56 F4.1 pc e_RvL ? rms uncertainty on RvL
58- 60 I3 pc RD ? Dias et al. (2002A&A...389..871D 2002A&A...389..871D,
Cat. B/ocl) distance
62- 64 I3 pc RK ? Karchenko et al. (2005, J/A+A/438/1163 and
J/A+A/440/403) distance
66- 69 F4.1 pc r 1σ radius in pc
71- 75 F5.1 deg rd 1σ radius in degrees
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Note (1): The number of members, N, and cluster distance, RXHIP, are given
for the full candidate lists, including multiple stars and stars with
unknown radial velocity.
Note (2): Separation parameter, n, which describes the concentration of the
group and its kinematic separation from field stars.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 26-Nov-2012