Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:1806.03650)
· References in the article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
A refined search for pulsations in white dwarf companions to millisecond pulsars
Authors:
Kilic, Mukremin; Hermes, J. J.; Córsico, A. H.; Kosakowski, Alekzander; Brown, Warren R.; Antoniadis, John; Calcaferro, Leila M.; Gianninas, A.; Althaus, Leandro G.; Green, M. J.
Affiliation:
AA(Department of Physics and Astronomy, University of Oklahoma, 440 W. Brooks St., Norman, OK 73019, USA; Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK 0000-0001-6098-2235), AB(Department of Physics and Astronomy, University of North Carolina, Chapel Hill NC 27599, USA), AC(Facultad de Ciencias Astronómicas y Geofísicas (UNLP), La Plata, Argentina), AD(Department of Physics and Astronomy, University of Oklahoma, 440 W. Brooks St., Norman, OK 73019, USA), AE(Smithsonian Astrophysical Observatory, 60 Garden St, Cambridge MA 02138, USA), AF(Dunlap Institute for Astronomy & Astrophysics, University of Toronto, 50 St. George Street, Toronto M5S 3H4, Canada 0000-0003-4453-3776), AG(Facultad de Ciencias Astronómicas y Geofísicas (UNLP), La Plata, Argentina), AH(Department of Physics and Astronomy, University of Oklahoma, 440 W. Brooks St., Norman, OK 73019, USA), AI(Facultad de Ciencias Astronómicas y Geofísicas (UNLP), La Plata, Argentina), AJ(Astronomy and Astrophysics Group, Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK 0000-0002-0948-4801)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 479, Issue 1, p.1267-1272 (MNRAS Homepage)
Publication Date:
09/2018
Origin:
OUP
Astronomy Keywords:
stars: oscillations, stars: variables: general, white dwarfs, pulsars: individual: PSR J1738+0333, PSR J1911- 5958A, PSR J2234+0611
Abstract Copyright:
2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society
DOI:
10.1093/mnras/sty1546
Bibliographic Code:
2018MNRAS.479.1267K

Abstract

We present optical high-speed photometry of three millisecond pulsars with low-mass (<0.3 M&sun;) white dwarf companions, bringing the total number of such systems with follow-up time-series photometry to five. We confirm the detection of pulsations in one system, the white dwarf companion to PSR J1738+0333, and show that the pulsation frequencies and amplitudes are variable over many months. A full asteroseismic analysis for this star is underconstrained, but the mode periods we observe are consistent with expectations for an M_{\star }=0.16 - 0.19 M_{&sun;} white dwarf, as suggested from spectroscopy. We also present the empirical boundaries of the instability strip for low-mass white dwarfs based on the full sample of white dwarfs, and discuss the distinction between pulsating low-mass white dwarfs and subdwarf A/F stars.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)


Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints