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ZTF J1901+5309: a 40.6-min orbital period eclipsing double white dwarf system

Coughlin, Michael W. and Burdge, Kevin and Phinney, E. Sterl and van Roestel, Jan and Bellm, Eric C. and Dekany, Richard G. and Delacroix, Alexandre and Duev, Dmitry A. and Feeney, Michael and Graham, Matthew J. and Kulkarni, S. R. and Kupfer, Thomas and Laher, Russ R. and Masci, Frank J. and Prince, Thomas A. and Riddle, Reed and Rosnet, Philippe and Smith, Roger and Serabyn, Eugene and Walters, Richard (2020) ZTF J1901+5309: a 40.6-min orbital period eclipsing double white dwarf system. Monthly Notices of the Royal Astronomical Society: Letters, 494 (1). L91-L96. ISSN 1745-3925.

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The Zwicky Transient Facility has begun to discover binary systems with orbital periods that are less than 1 h. Combined with dedicated follow-up systems, which allow for high-cadence photometry of these sources, systematic confirmation and characterization of these sources are now possible. Here, we report the discovery of ZTF J190125.42+530929.5, a 40.6-min orbital period, eclipsing double white dwarf binary. Both photometric modelling and spectroscopic modelling confirm its nature, yielding an estimated inclination of i=86.2^(+0.6)_(−0.2) deg and primary and secondary effective temperatures of {T}_(eff)=28000⁺⁵⁰⁰₋₅₀₀ and 17600⁺⁴⁰⁰₋₄₀₀, respectively. This system adds to a growing list of sources for future gravitational-wave detectors and contributes to the demographic analysis of double degenerates.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Coughlin, Michael W.0000-0002-8262-2924
Burdge, Kevin0000-0002-7226-836X
van Roestel, Jan0000-0002-2626-2872
Bellm, Eric C.0000-0001-8018-5348
Dekany, Richard G.0000-0002-5884-7867
Duev, Dmitry A.0000-0001-5060-8733
Graham, Matthew J.0000-0002-3168-0139
Kulkarni, S. R.0000-0001-5390-8563
Kupfer, Thomas0000-0002-6540-1484
Laher, Russ R.0000-0003-2451-5482
Masci, Frank J.0000-0002-8532-9395
Prince, Thomas A.0000-0002-8850-3627
Riddle, Reed0000-0002-0387-370X
Walters, Richard0000-0002-1835-6078
Alternate Title:ZTF J1901+5309: A 40.6-Minute Orbital Period Eclipsing Double White Dwarf System
Additional Information:© 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model ( Accepted 2020 March 6. Received 2020 March 5; in original form 2020 February 17. Published: 30 March 2020. MC is supported by the David and Ellen Lee Prize Postdoctoral Fellowship at the California Institute of Technology. SRK thanks the Heising-Simons Foundation for supporting his research with ZTF. Part of this work was carried out at the Jet Propulsion Laboratory, under contract with NASA. ESP’s research was funded in part by the Gordon and Betty Moore Foundation through Grant GBMF5076. Based on observations obtained with the Samuel Oschin Telescope 48-inch and the 60-inch Telescope at the Palomar Observatory as part of the ZTF project. ZTF is supported by the National Science Foundation under Grant No. AST-1440341 and a collaboration including Caltech, IPAC, the Weizmann Institute for Science, the Oskar Klein Center at Stockholm University, the University of Maryland, the University of Washington (UW), Deutsches Elektronen-Synchrotron and Humboldt University, Los Alamos National Laboratories, the TANGO Consortium of Taiwan, the University of Wisconsin at Milwaukee, and Lawrence Berkeley National Laboratories. Operations are conducted by Caltech Optical Observatories, IPAC, and UW. The KPED team thanks the National Science Foundation and the National Optical Astronomical Observatory for making the Kitt Peak 2.1-m telescope available. We thank the observatory staff at Kitt Peak for their efforts to assist Robo-AO KP operations. The KPED team thanks the National Science Foundation, the National Optical Astronomical Observatory, the Caltech Space Innovation Council, and the Murty family for support in the building and operation of KPED. In addition, they thank the CHIMERA project for use of the Electron Multiplying CCD (EMCCD).
Group:Astronomy Department, Infrared Processing and Analysis Center (IPAC), Zwicky Transient Facility
Funding AgencyGrant Number
David and Ellen Lee Postdoctoral ScholarshipUNSPECIFIED
Heising-Simons FoundationUNSPECIFIED
Gordon and Betty Moore FoundationGBMF5076
Infrared Processing and Analysis Center (IPAC)UNSPECIFIED
Weizmann Institute of ScienceUNSPECIFIED
Stockholm UniversityUNSPECIFIED
University of MarylandUNSPECIFIED
University of WashingtonUNSPECIFIED
Deutsches Elektronen-SynchrotronUNSPECIFIED
Humboldt UniversityUNSPECIFIED
Los Alamos National LaboratoryUNSPECIFIED
University of Wisconsin-MilwaukeeUNSPECIFIED
Lawrence Berkeley National LaboratoryUNSPECIFIED
Subject Keywords:(stars:) binaries: eclipsing – (stars:) white dwarfs
Issue or Number:1
Record Number:CaltechAUTHORS:20200415-072418764
Persistent URL:
Official Citation:Michael W Coughlin, Kevin Burdge, E Sterl Phinney, Jan van Roestel, Eric C Bellm, Richard G Dekany, Alexandre Delacroix, Dmitry A Duev, Michael Feeney, Matthew J Graham, S R Kulkarni, Thomas Kupfer, Russ R Laher, Frank J Masci, Thomas A Prince, Reed Riddle, Philippe Rosnet, Roger Smith, Eugene Serabyn, Richard Walters, ZTF J1901+5309: a 40.6-min orbital period eclipsing double white dwarf system, Monthly Notices of the Royal Astronomical Society: Letters, Volume 494, Issue 1, May 2020, Pages L91–L96,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102543
Deposited By: Tony Diaz
Deposited On:15 Apr 2020 16:10
Last Modified:15 Apr 2020 16:10

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