Table information for 'k2c9vst.events'

General

This table is available for ADQL queries and through the TAP endpoint.

Resource Description: The Kepler satellite has observed the Galactic center in a campaign lasting from April until the end of June 2016 (K2/C9). The main objective of the 99 hours for the microlensing program 097.C-0261(A) using the ESO VLT Survey Telescope (VST) was to monitor the superstamp (i.e., the actually downloaded region of K2/C9) in service mode for improving the event coverage and securing some color-information. Due to weather conditions, the majority of images were taken in the red band. These are part of the present release. The exact pointing strategy was adjusted to cover the superstamp with 6 pointings and to contain as many microlensing events from earlier seasons as possible. In addition, a two-point dither was requested to reduce the impact of bad pixels and detector gaps. Consequently, some events were getting more coverage and have been observed with different CCDs. The large footprint of roughly 1 square degree and the complementary weather conditions at Cerro Paranal have lead to the coverage of 147 events (this resource's events table), but ~60 of those were already at baseline.

For a list of all services and tables belonging to this table's resource, see Information on resource 'Coordinated microlensing survey observations with Kepler K2/C9 using VST'

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference http://archive.eso.org/wdb/wdb/eso/sched_rep_arc/query?progid=097.C-0261(A) either in addition to or instead of the service reference.

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:k2c9vst_events,
  year=2017,
  title={K2/C9 Microlensing Events},
  author={Hundertmark, M. and Korhonen, H. and Jørgensen, U. and Street, R and Penny, M. and Tsapras, Y. and Dominik, M. and Kerins, E. and Cassan, A. and Snodgrass, C. and Bachelet, E. and Bramich, D. and Bozza, V.},
  url={http://dc.zah.uni-heidelberg.de/tableinfo/k2c9vst.events},
  howpublished={{VO} resource provided by the {GAVO} Data Center}
}

Fields

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NameTable Head DescriptionUnitUCD
event_id Event Name Event name as specified by OGLE (http://ogle.astrouw.edu.pl/ogle4/ews/2015/ews.html) or MOA (http://www.phys.canterbury.ac.nz/moa/). Some event ids actually reference the same object. These have otherwise identical records. N/A meta.id;meta.main
raj2000 RA Right ascension of the event source as reported by the OGLE or MOA deg pos.eq.ra;meta.main
dej2000 Dec Right ascension of the event source as reported by the OGLE or MOA deg pos.eq.dec;meta.main
t_alert HJD Alert HJD of alert release. d time.event
t_0 t_0 Time of largest magnification estimated from a fit assuming a gravitational lens event of pointlike source and lens. d time.event;stat.fit
t_e t_e Event timescale (Einstein time assuming a gravitational lens event of pointlike source and lens). d time.event
u_0 u_0 Impact parameter in units of Einstein radii. N/A src.impactParam
a_0 A_0 Maximum magnification. N/A phot.flux;arith.ratio
flags flags Bitmask for flags: bit 0 -- during campaign; bit 1: In footprint (i.e., Kepler data could be available); bit 2: In superstamp (i.e., Kepler data available). N/A meta.code

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