CaltechAUTHORS
  A Caltech Library Service

An 8.8 minute orbital period eclipsing detached double white dwarf binary

Burdge, Kevin B. and Coughlin, Michael W. and Fuller, Jim and Kaplan, David L. and Kulkarni, S. R. and Marsh, Thomas R. and Prince, Thomas A. and Bellm, Eric C. and Dekany, Richard G. and Duev, Dmitry A. and Graham, Matthew J. and Mahabal, Ashish A. and Masci, Frank J. and Laher, Russ R. and Riddle, Reed and Soumagnac, Maayane T. (2020) An 8.8 minute orbital period eclipsing detached double white dwarf binary. . (Unpublished) https://resolver.caltech.edu/CaltechAUTHORS:20201103-093416233

[img] PDF - Submitted Version
See Usage Policy.

1434Kb

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20201103-093416233

Abstract

We report the discovery of ZTF J2243+5242, an eclipsing double white dwarf binary with an orbital period of just 8.8 minutes, the second known eclipsing binary with an orbital period less than ten minutes. The system likely consists of two low-mass white dwarfs, and will merge in approximately 400,000 years to form either an isolated hot subdwarf or an R Coronae Borealis star. Like its 6.91min counterpart, ZTF J1539+5027, ZTF J2243+5242 will be among the strongest gravitational wave sources detectable by the space-based gravitational-wave detector The Laser Space Interferometer Antenna (LISA) because its gravitational-wave frequency falls near the peak of LISA's sensitivity. Based on its estimated distance of d = 2120⁺¹³¹₋₁₁₅pc, LISA should detect the source within its first few months of operation, and should achieve a signal-to-noise ratio of 87±5 after four years. We find component masses of M_A = 0.349^(+0.093)_(−0.074)M⊙ and M_B = 0.384^(+0.114)_(−0.074)M⊙, radii of R_A = 0.0308^(+0.0026)_(−0.0025)R⊙ and R_B = 0.0291^(+0.0032)_(−0.0024)R⊙, and effective temperatures of T_A = 22200⁺¹⁸⁰⁰₋₁₆₀₀K and T_B = 16200⁺¹²⁰⁰₋₁₀₀₀K. We determined all of these properties, and the distance to this system, using only photometric measurements, demonstrating a feasible way to estimate parameters for the large population of optically faint (r > 21m_(AB)) gravitational-wave sources which the Vera Rubin Observatory (VRO) and LISA should identify.


Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/2010.03555arXivDiscussion Paper
ORCID:
AuthorORCID
Burdge, Kevin B.0000-0002-7226-836X
Coughlin, Michael W.0000-0002-8262-2924
Fuller, Jim0000-0002-4544-0750
Kaplan, David L.0000-0001-6295-2881
Kulkarni, S. R.0000-0001-5390-8563
Marsh, Thomas R.0000-0002-2498-7589
Prince, Thomas A.0000-0002-8850-3627
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
Mahabal, Ashish A.0000-0003-2242-0244
Masci, Frank J.0000-0002-8532-9395
Laher, Russ R.0000-0003-2451-5482
Riddle, Reed0000-0002-0387-370X
Soumagnac, Maayane T.0000-0001-6753-1488
Additional Information:K.B.B thanks the National Aeronautics and Space Administration and the Heising Simons Foundation for supporting his research. M.W.C. acknowledges support from the National Science Foundation with grant number PHY-2010970. JF acknowledges support from an Innovator Grant from The Rose Hills Foundation, and the Sloan Foundation through grant FG-2018-10515. TRM was supported by the UK's Science and Technology Facilities Council through grant ST/T000406/1. Based on observations obtained with the Samuel Oschin Telescope 48-inch and the 60-inch Telescope at the Palomar Observatory as part of the Zwicky Transient Facility 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, 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 COO, IPAC, and UW. Some of the data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. Facilities: PO:1.2m (ZTF), Hale (CHIMERA), Keck:I (LRIS), Swift (XRT and UVOT) Software: Aplpy (Robitaille & Bressert 2012), Astropy (Astropy Collaboration et al. 2013), CU-VARBASE (https://github.com/johnh2o2/cuvarbase), LCURVE (Copperwheat et al. 2010), Lpipe (Perley 2019), Multinest (Feroz et al. 2009), Numpy (van der Walt et al. 2011).
Group:Astronomy Department, Infrared Processing and Analysis Center (IPAC), Zwicky Transient Facility
Funders:
Funding AgencyGrant Number
NASAUNSPECIFIED
Heising-Simons FoundationUNSPECIFIED
NSFPHY-2010970
Rose Hills FoundationUNSPECIFIED
Alfred P. Sloan FoundationFG-2018-10515
Science and Technology Facilities Council (STFC)ST/T000406/1
NSFAST-1440341
CaltechUNSPECIFIED
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
TANGO ConsortiumUNSPECIFIED
University of Wisconsin-MilwaukeeUNSPECIFIED
Lawrence Berkeley National LaboratoryUNSPECIFIED
W. M. Keck FoundationUNSPECIFIED
Subject Keywords:stars: white dwarfs; binaries: close
Record Number:CaltechAUTHORS:20201103-093416233
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20201103-093416233
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:106389
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:04 Nov 2020 17:34
Last Modified:04 Nov 2020 17:34

Repository Staff Only: item control page