Authors: Wielgus, M., et al.
Date: September 23, 2020
Primary Reference: Wielgus, M., et al. 2020, ApJ, DOI: 10.3847/1538-4357/abac0d
Data Product Code: 2020-D03-01
Brief Description:
We release a data set to accompany the Monitoring the Morphology of M87* in 2009–2017 with the Event Horizon Telescope paper (Wielgus et al. 2020). It contains timestamp, telescope codes, u-v coordinates, debiased visibility amplitude, and estimated RMS uncertainty of M87* data from the Event Horizon Telescope (EHT)'s 2011, 2012, and 2013 observation campaign. The data set is made public simultaneously with Wielgus et al. (2020).
The 2009 data set was previously used in Doeleman et al. (2012) and can be found here: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/other/Sci/338.355 . The 2012 visibility amplitude data set was previously used in Akiyama et al. (2015), but has been now updated (see Wielgus et al. for details) and is republished. The 2012 closure phase data set did not change and can be found here: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/ApJ/807/150 . The 2011 and 2013 data were never published before. Details of the data processing are documented in section 2 of Wielgus et al. (2020). The paper also uses EHT's 2017 data, which was described in details in EHTC et al. (2019).
All data are stored as self-described text files, which are located in
the "dat/" subdirectory. The tgz file is a gzipped tarball that
contains the whole repository. It is included in this repository for
convenience.
Station Code Table:
| Code | Station Name | Location |
|---|---|---|
AP |
APEX | Chile |
AZ |
Submillimeter Telescope | Arizona |
C1, C2, C3 |
Combined Array for Research in Millimeter-wave Astronomy, different subarrays | California |
CS |
Caltech Submillimeter Observatory | Hawai'i |
JC |
James Clerk Maxwell Telescope | Hawai'i |
SM |
Submillimeter Array | Hawai'i |
References:
- Wielgus, et al. 2020, ApJ, DOI: 10.3847/1538-4357/abac0d
- EHT Collaboration Data Portal Website
- The Event Horizon Telescope Collaboration, et al. 2019c, ApJL, 875, L3 (M87 Paper III)
- Doeleman, et al. 2012, Science, 338, 355
- 2009 visibility amplitude data
- Akiyama, et al. 2015, ApJ, 807, 150
- 2012 closure phase data