THE NEW ECLIPSING CV MASTER OTJ192328.22+612413.5—A POSSIBLE SW SEXTANTIS STAR
作者： M. R. Kennedy , P. Callanan , P. M. Garnavich , P. Szkody , S. Bouanane
DOI: 10.3847/0004-6256/152/1/27
关键词: Photometry (optics) 、 Brightness 、 Orbital period 、 Emission spectrum 、 Astrophysics 、 Light curve 、 Physics 、 Balmer series 、 Dwarf nova 、 Cataclysmic variable star
摘要: We present optical photometry and spectroscopy of the new eclipsing cataclysmic variable MASTER OTJ192328.22+612413.5, discovered by team. find orbital period to be P = 0.16764612(5) day/4.023507(1) hr. The depth eclipse (2.9 ± 0.1 mag) suggests that system is nearly edge on, modeling confirms inclination between 813 836. brightness outside varies observations, with a change 1.6 mag. Spectroscopy reveals double-peaked Balmer emission lines. By using spectral features matching late M-type companion, we bound distance 750 250 pc, depending on companion's type. source displays 2 mag changes timescales days. amplitude these changes, along spectrum at faint state, suggest possibly dwarf nova. lack any high-excitation He ii lines this not magnetically dominated. light curve in both quiescence outburst resembles Lanning 386, implying OTJ192328.22+612413.5 possible cross nova SW Sextantis star.
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sci-hub.se 参考文章(29)
N. R. Lomb, Least-squares frequency analysis of unequally spaced data Astrophysics and Space Science. ,vol. 39, pp. 447- 462 ,(1976) , 10.1007/BF00648343
Pablo Rodríguez-Gil, Jorge Casares, Ignacio G. Martínez-Pais, Pasi Hakala, Danny Steeghs, Evidence of Magnetic Accretion in an SW Sextantis Star: Discovery of Variable Circular Polarization in LS Pegasi* The Astrophysical Journal. ,vol. 548, ,(2001) , 10.1086/318922
J. D. Scargle, Studies in astronomical time series analysis. II - Statistical aspects of spectral analysis of unevenly spaced data The Astrophysical Journal. ,vol. 263, pp. 835- 853 ,(1982) , 10.1086/160554
I. Hubeny, A computer program for calculating non-LTE model stellar atmospheres Computer Physics Communications. ,vol. 52, pp. 103- 132 ,(1988) , 10.1016/0010-4655(88)90177-4
Steve Brady, John R. Thorstensen, Michael D. Koppelman, Jose Luis Prieto, Peter M. Garnavich, Alec Hirschauer, Michael Florack, The Eclipsing Cataclysmic Variable Lanning 386: Dwarf Nova, SW Sextantis Star, or Both? Publications of the Astronomical Society of the Pacific. ,vol. 120, pp. 301- 310 ,(2008) , 10.1086/529209
I. Hubeny, T. Lanz, Non-LTE line-blanketed model atmospheres of hot stars. 1: Hybrid complete linearization/accelerated lambda iteration method The Astrophysical Journal. ,vol. 439, pp. 875- 904 ,(1995) , 10.1086/175226
JE Steiner, MP Diaz, The V Sagittae Stars Publications of the Astronomical Society of the Pacific. ,vol. 110, pp. 276- 282 ,(1998) , 10.1086/316139
Edward F. Schlafly, Douglas P. Finkbeiner, Measuring Reddening with Sloan Digital Sky Survey Stellar Spectra and Recalibrating SFD The Astrophysical Journal. ,vol. 737, pp. 103- ,(2011) , 10.1088/0004-637X/737/2/103
Christian Knigge, Isabelle Baraffe, Joseph Patterson, THE EVOLUTION OF CATACLYSMIC VARIABLES AS REVEALED BY THEIR DONOR STARS The Astrophysical Journal Supplement Series. ,vol. 194, pp. 28- ,(2011) , 10.1088/0067-0049/194/2/28
D. W. Hoard, Paula Szkody, Cynthia S. Froning, Knox S. Long, Christian Knigge, Observations of the SW Sextantis Star DW Ursae Majoris with the Far Ultraviolet Spectroscopic Explorer The Astronomical Journal. ,vol. 126, pp. 2473- 2486 ,(2003) , 10.1086/378605