|( )||( )||(kpc)|
|NGC 6266||5.14||10.8||6.9||-9.19||37.07||8.24||51||2-3||48-49||2c||1, 2, 3|
|M 28||4.75||14.4||5.6||-8.33||11.29||3.73||26||2-3||23-24||2c||1, 5|
|M 4||4.01||49.8||1.73||-6.9||1.0||1.0||6||1-3||3-5||5||1, 6|
|M 71||3.05||37.8||4.0||-5.6||0.11||0.30||14||1-7||10 3||4-9||7|
Notes. Columns 2-5 give the values
for central density (),
distance (d), and absolute visual magnitude ()
come from Harris (1996, version of
February 2003). For M 4, the values of
are computed for the distance and reddening of Richer
et al. (1997). Columns 6 and 7 are
the collision number, which is computed from
and the half mass from
(Kong et al. 2006).
are normalized to the value of M 4. Column 8 shows
the total number of sources detected within the half-mass radius.
Column 9 is the number of expected fore/background sources.
Column 10 gives the number of expected cluster members plus
error. Column 11 shows the number of X-ray sources (with
which have optical or/and radio counterparts associated with the
cluster, or spectrally confirmed qLMXBs. The last column gives the
reference paper. These globular clusters are ordered on the central
(a) For each cluster, the basic data for this table were extracted from: 1. Pooley et al. (2003); 2. Cocozza et al. (2008); 3. Trepl (2007); 4. Heinke et al. (2005); 5. Becker et al. (2003); 6. Bassa et al. (2004); 7. this work; 8. Bassa et al. (2008); 9. Kong et al. (2006). (b) NGC 288 was not observed long enough to reach this luminosity limit of erg s-1 in the 0.5-6.0 keV range. Its limiting luminosity is erg s-1. However, we keep this cluster's data, as a lower limit, since we have so few constraints on low-density clusters. (c) No information about the optical counterparts to X-ray sources.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.