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CCD Photometry, Light Curve Deconvolution, Period Analysis and Evolutionary Status of the HADS Variable V524 And

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Języki publikacji
EN
Abstrakty
EN
New multi-color BVIc CCD photometric data of V524 And, a pulsating variable long considered to be an SX Phe-type subdwarf system were acquired during 2018. Deconvolution of precise time-series light curve data was accomplished using discrete Fourier transformation and revealed a mean fundamental mode f0 of oscillation at 10.583 d-1 along with four other harmonics from 2f0 to 5f0. Following successive pre-whitening of each residual signal, no other statistically significant frequency shared by all band-passes was resolved. Potential period changes over time were evaluated using four new times-of-maximum light derived from the present study along with other values reported in the literature. Photometric data collected during the ROTSE-I (1999) and SuperWASP (2007-2008) surveys combined with CCD-derived V-mag data acquired from the AAVSO archives produced an additional sixty-six times-of-maximum measurements. Corresponding residuals from the observed minus calculated values indicate very little change in the primary pulsation period since 1999. However, a far more interesting finding from this secular analysis suggests an underlying sinusoidal-like variation of PB=6.41 yr consistent with a putative binary partner that may be a brown dwarf (M<0.07 M). An investigation with PARSEC models for generating stellar tracks and isochrones provided further insight into the evolutionary status and physical character of V524 And. This intrinsic variable associated with the Galactic disk has an estimated mass around 2 M with near-solar metallicity. These characteristics point to V524 And being a Population I HADS with an age approaching 1 Gyr rather than an SX Phe-type variable.
Czasopismo
Rocznik
Strony
283--304
Opis fizyczny
Bibliogr. 66 poz., rys., tab., wykr.
Twórcy
autor
  • UnderOak Observatory, Cedar Knolls, NJ 07927 and Desert Blooms Observatory, Benson, AZ 85602, USA
autor
  • Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
Bibliografia
  • Akerlof, C., et al. 2000, AJ, 119, 1901.
  • Alton, K.B., and Stępień, K. 2019, JAAVSO, 47, 53.
  • Amard, L., Palacios, A., Charbonnel, C., Gallet, F., Georgy, C., Lagarde, N., and Siess, L. 2019, A&A, 631, 77.
  • Andrae, R., et al. 2018, A&A, 616, A8.
  • Antonello, E., and Pastori, L. 1981, PASP, 93, 237.
  • Baade, W. 1956, PASP, 68, 5.
  • Baglin, A. 2003, Advances in Space Research, 31, 345.
  • Bailer-Jones, C.A.L. 2015, PASP, 127, 994.
  • Balona, L.A. 2018, MNRAS, 479, 183.
  • Balona, L.A., and Nemec, J.M. 2012, MNRAS, 426, 2413.
  • Berry, R., and Burnell, J. 2005, “The Handbook of Astronomical Image Processing”, 2nd Ed, Willmann-Bell, Richmond VA.
  • Breger, M. 1979, PASP, 91, 5.
  • Breger, M. 1990, Delta Scuti Newsletter, 2, 13.
  • Bressan, A., Marigo, P., Girardi, L., Salasnich, B., Dal Cero, C., Rubele, S., and Nanni, A. 2012, MNRAS, 427, 127.
  • Butters, O.W., et al. 2010, A&A, 520, L10.
  • Carollo, D., et al. 2010, ApJ, 712, 692.
  • Dworak, T.Z., and Zieba, S. 1975, IBVS, 1005.
  • Eker Z., et al. 2018, MNRAS, 479, 5491.
  • Flower, P.J. 1996, ApJ, 469, 355.
  • Frolov, M.S. 1969, Astronomicheskii Tsirkulyar, 505, 1.
  • Gaia Collaboration, et al. 2018, A&A, 616, A1.
  • Garg, A., et al. 2010, AJ, 140, 328.
  • Gilliland, R.L., et al. 2010, PASP, 122, 131.
  • Hübscher, J. 2015, IBVS, 6152.
  • Irwin, J.B. 1959, AJ, 64, 149.
  • Jordi, C., et al. 2010, A&A, 523, A48.
  • Joshi, S., and Joshi, Y.C 2015, Journal of Astrophysics and Astronomy, 36, 33.
  • Jurcsik, J., et al. 2005, A&A, 430, 1049.
  • Kuzmin, M.L. 2008, Peremennye Zvezdy Prilozhenie, 8, 16.
  • Laney, C.D., Joner, M., and Rodriguez, E. 2003, ASP Conference Series, 292, 203.
  • Leavitt, H.S., and Pickering, E.C. 1912, Harvard College Observatory Circular, 173, 1.
  • Lee, Y.-H., Kim, S.S., Shin, J., Lee, J., and Jin, H. 2008, PASJ, 60, 551.
  • Lenz, P., and Breger, M. 2005, Communications in Asteroseismology, 146, 53.
  • Lindegren, L., et al. 2016, A&A, 595, A4.
  • Longmore, A.J., Fernely, J.A., and Jameson, R.F. 1986, MNRAS, 220, 279.
  • McNamara, D.H. 2000, ASP Conference Series, 210, 373.
  • McNamara, D.H. 2011, AJ, 142, 110.
  • Murphy, S.J., Bedding, T.R., Shibahashi,H., Kurtz, D.W., and Kjeldsen, H. 2014, MNRAS, 441, 2515.
  • Neeley, J.R., et al. 2015, ApJ, 808, 11.
  • Nemec, J.M., Balona, L.A., Murphy, S.J., Kinemuchi, K., and Jeon, Y.-B. 2017, MNRAS, 466, 1290.
  • Niu, J.-S., Fu, J.-N., and Zong, W.-K. 2013, Research in Astronomy and Astrophysics, 13, 1181.
  • Niu, J.-S., et al. 2017, MNRAS, 467, 3122.
  • Oosterhoff, P.Th. 1939, Observatory, 62, 104.
  • Paunzen, E., and Vanmunster, T. 2016, Astron. Nachr., 337, 239.
  • Poretti, E. 2003a, A&A, 409, 1031.
  • Poretti, E. 2003b, ASP Conference Series, 292, 145.
  • Schlafly, E.F., and Finkbeiner, D.P. 2011, ApJ, 737, 103.
  • Schwarzenberg-Czerny, A. 1996, ApJ, 460, L107.
  • Serenelli, A., Scott, P., Villante, F., Vincent, A.C., Asplund, M., Basu, S., Grevesse, N., and PeñaGaray, C. 2016, MNRAS, 463, 2.
  • Templeton, M.R., Samolyk, G., Dvorak, S., Poklar, R., Butterworth, N., and Gerner, H. 2009, PASP, 121, 1076.
  • Torres, G. 2010, AJ, 140, 1158.
  • Vagnozzi, S., Freese, K., and Zurbuchen, T.H. 2017, ApJ, 839, 55V.
  • von Steiger, R., and Zurbuchen, T. H. 2016, ApJ, 816, 13.
  • Walker, G., et al. 2003, PASP, 115, 1023.
  • Warner, B. 2007, Minor Planet Bulletin, 34, 113.
  • Wesselink, W.J. 1946, Bulletin of the Astronomical Institutes of the Netherlands, 10, 91.
  • Wils, P., et al. 2011, IBVS, 5977.
  • Wils, P., et al. 2012, IBVS, 6015.
  • Wils, P., et al. 2013, IBVS, 6049.
  • Wils, P., et al. 2014, IBVS, 6122.
  • Wils, P., et al. 2015, IBVS, 6150.
  • Xiong, D.R., Deng, L., Zhang, C., and Wang, K. 2016, MNRAS, 457, 3163.
  • Zacharias, N., et al. 2010, AJ, 139, 2184.
  • Zasche, P., Liakos, A., Niarchos, P., Wolf, M., Manimanis, V., and Gazeas, K. 2009, New Astronomy, 14, 121.
  • Zhao, G., Zhao, Y.-H., Chu, Y.-Q., Jing, Y.-P, and Deng, L.-C. 2012, Research in Astronomy and Astrophysics, 12, 723.
  • Ziaali, E., Bedding, T.R., Murphy, S.J., Van Reeth, T., and Hey, D.R. 2019, MNRAS, 486, 4348.
Uwagi
Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-86ffb910-320c-44a0-8332-f62bf3148ab7
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