The Swift Deep Galactic Plane Survey (DGPS) Phase I Catalog

Creators: O'Connor, B.; Kouveliotou, C.; Evans, P. A.; Gorgone, N.; van Kooten, A. J.; Gagnon, S.; Yang, H.; Baring, M. G.; Bellm, E.; Beniamini, P.; Brink, J.; Buckley, D. A. H.; Cenko, S. B.; Egbo, O. D.; Göğüş, E.; Granot, J.; Hailey, C.; Hare, J.; Harrison, F.¹; Hartmann, D.; van der Horst, A. J.; Huppenkothen, D.; Kaper, L.; Kargaltsev, O.; Kennea, J. A.; Mukai, K.; Slane, P. O.; Stern, D.^{2, 1}; Troja, E.; Wadiasingh, Z.; Wijers, R. A. M. J.; Woudt, P.; Younes, G.

1. California Institute of Technology
2. Jet Propulsion Lab

Abstract

The Swift Deep Galactic Plane Survey (DGPS) is a Swift Key Project consisting of 380 tiled pointings covering ∼40 deg² of the Galactic plane between longitude 10 < ∣l∣ < 30 deg and latitude ∣b∣ < 0.5 deg. Each pointing has a 5 ks exposure, yielding a total of 1.9 Ms spread across the entire survey footprint. Phase I observations were carried out between 2017 March and 2021 May. The survey is complete to depth Lₓ > 10³⁴ erg s⁻¹ to the edge of the Galaxy. The main survey goal is to produce a rich sample of new X-ray sources and transients, while also covering a broad discovery space. Here, we introduce the survey strategy and present a catalog of sources detected during Phase I observations. In total, we identify 928 X-ray sources, of which 348 are unique to our X-ray catalog. We report on the characteristics of sources in our catalog and highlight sources newly classified and published by the DGPS team.

Copyright and License

© 2023. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

Acknowledgement

The authors thank the anonymous referee for constructive feedback that improved the manuscript. B.O. and C.K. acknowledge support from multiple grants to follow-up DGPS sources: NASA grants 80NSSC17K0335, 80NSSC20K0389, 80NSSC19K0916, 80NSSC22K1398, and 80NSSC22K0583, Chandra awards GO9-20057X and GO2-23038X, and award number 46939-1-CCNS 22317F. P.B.'s research was supported by a grant (No. 2020747) from the United States–Israel Binational Science Foundation (BSF), Jerusalem, Israel. J.H. and Z.W. acknowledge support from NASA under award No. 80GSFC21M0002.

This work made use of data supplied by the UK Swift Science Data Centre at the University of Leicester. This research has made use of the XRT Data Analysis Software (XRTDAS) developed under the responsibility of the ASI Science Data Center (ASDC), Italy. This research has made use of the VizieR catalog access tool, CDS, Strasbourg, France (https://vizier.cds.unistra.fr). The original description of the VizieR service was published in Ochsenbein et al. (2000). This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. This research has made use of data obtained from the Chandra Source Catalog, provided by the Chandra X-ray Center (CXC) as part of the Chandra Data Archive. This research has made use of data obtained from the 4XMM XMM-Newton serendipitous source catalog compiled by the 10 institutes of the XMM-Newton Survey Science Centre selected by ESA. This research has made use of data and/or software provided by the High Energy Astrophysics Science Archive Research Center (HEASARC), which is a service of the Astrophysics Science Division at NASA/GSFC.

Facilities

Swift (XRT) - Swift Gamma-Ray Burst Mission

Software References

HEASoft, XRTDAS, swifttools (Evans et al. 2023), PIMMS, Astropy (Astropy Collaboration et al. 2013)

Files

OConnor_2023_ApJS_269_49.pdf

Files (3.6 MB)

Name	Size	Download all
OConnor_2023_ApJS_269_49.pdf md5:ab3c0f4a6f38df89f01923b95bfd7bfa	3.6 MB	Preview Download

	All versions	This version
Views	0	0
Downloads	0	0
Data volume	0 Bytes	0 Bytes