Stacklist (xmm4_dr11s.stacklist)

Description

The list of stacks includes information on the 1,475 groups of observations ("stacks") from which the stacked catalogue 4XMM-DR11s was compiled. Stacked source detection was performed on all observations in a stack simultaneously. The table provides information on the stack size, reference coordinates, and number of detected sources.

Attribution

Users of the catalogue are kindly asked to reference the catalogue papers Traulsen et al. 2020, A&A 641, A137 and 2019, A&A 624, A77, and to include the policy statement:

This research has made use of data obtained from the 4XMM XMM-Newton serendipitous stacked source catalogue 4XMM-DR10s compiled by the institutes of the XMM-Newton Survey Science Centre selected by ESA.

Columns

Name Type UCD Unit Description
stack_id short meta.id
meta.main
meta.ref

Stack identifier
n_observations short meta.number
meta.main

Number of observations in the stack
n_contrib_max short meta.number
meta.main

Maximum number of directly overlapping observations in the stack
n_sources_stack short meta.number
meta.main

Number of sources detected in the whole stack
ref_ra double pos.eq.ra
meta.main 		deg

Reference coordinates of the stack: Right ascension
ref_dec double pos.eq.dec
meta.main 		deg

Reference coordinates of the stack: Declination
area_est double phys.angArea
meta.main 		deg**2

Approximate area covered by the stack