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Published December 10, 2018 | Published + Submitted
Journal Article Open

A Search For Pulsations in the Optical Light Curve of the Nova ASASSN-17hx


We present high-speed optical observations of the nova ASASSN-17hx, taken both immediately after its discovery and close to its first peak in brightness, to search for second–minute pulsations associated with the convective eddy turnover timescale within the nova envelope. We do not detect any periodic signal with greater than 3σ significance. Through injection and recovery, we rule out periodic signals of fractional amplitude >7.08 × 10^(−4) on timescales of 2 s and fractional amplitude >1.06 × 10^(−3) on timescales of 10 minutes. Additional observations of novae are planned to further constrain ongoing simulations of the launch and propagation of nova winds.

Additional Information

© 2018 The American Astronomical Society. Received 2018 August 27; revised 2018 October 15; accepted 2018 October 15; published 2018 December 5. The authors gratefully acknowledge the support of the Caltech Optical Observatories and the Scialog workshop and grant. G.H. acknowledges the support of the National Science Foundation Career Award AST-1654815. K.J.S. is supported by NASA through the Astrophysics Theory Program (NNX17AG28G). B.D.M. is supported by the National Science Foundation (AST-1615084) and NASA (HST-AR-15041.001-A, GG008699). Laura Chomiuk is supported by a Cotrell Scholar Award of the Research Corporation and NSF-AST 1751874. The authors acknowledge with thanks the variable star observations from the AAVSO International Database contributed by observers worldwide and used in this research.

Attached Files

Published - Rosenthal_2018_ApJ_869_7.pdf

Submitted - 1810.07298.pdf


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