Author | dc.contributor.author | Rabinowitz, David | |
Author | dc.contributor.author | Tourtellotte, Suzanne | es_CL |
Author | dc.contributor.author | Rojo, Patricio | es_CL |
Author | dc.contributor.author | Hoyer, Sergio | es_CL |
Author | dc.contributor.author | Folatelli, Gastón | es_CL |
Author | dc.contributor.author | Coppi, Paolo | es_CL |
Author | dc.contributor.author | Baltay, Charles | es_CL |
Author | dc.contributor.author | Bailyn, Charles | es_CL |
Admission date | dc.date.accessioned | 2011-11-30T15:46:56Z | |
Available date | dc.date.available | 2011-11-30T15:46:56Z | |
Publication date | dc.date.issued | 2011-05-01 | |
Cita de ítem | dc.identifier.citation | ASTROPHYSICAL JOURNAL Volume: 732 Issue: 1 Article Number: 51 Published: MAY 1 2011 | es_CL |
Identifier | dc.identifier.issn | 0004-637X | |
Identifier | dc.identifier.other | DOI: 10.1088/0004-637X/732/1/51 | |
Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/125555 | |
General note | dc.description | Artículo de publicación ISI | es_CL |
Abstract | dc.description.abstract | We report the discovery of an eclipsing cataclysmic variable with eclipse depths > 5.7 mag, orbital period 94.657 minutes, and peak brightness V similar to 18 at J2000 position 17(h)25(m)54(s). 8, -64 degrees 38'39 ''. Detected by visual inspection of images from Yale University's QUEST camera on the European Southern Observatory 1.0 m Schmidt telescope at La Silla, we obtained light curves in B, V, R, I, z, and J with SMARTS 1.3 m and 1.0 m telescopes at Cerro Tololo and spectra from 3500 to 9000 angstrom with the SOAR 4.3 m telescope at Cerro Pachon. The optical light curves show a deep, 5-minute eclipse immediately followed by a shallow 38-minute eclipse and then sinusoidal variation. No eclipses appear in J. During the deep eclipse we measure V-J > 7.1, corresponding to a spectral type M8 or later secondary, consistent with the dynamical constraints. The estimated distance is 150 ps. The spectra show strong hydrogen emission lines, Doppler broadened by 600-1300 km s(-1), oscillating with radial velocity that peaks at mid deep eclipse with semi-amplitude 500 +/- 22 km s(-1). We suggest that LSQ172554.8-643839 is a polar with a low-mass secondary viewed at high inclination. No known radio or X-ray source coincides with the new object's location. | es_CL |
Patrocinador | dc.description.sponsorship | U.S. Department of Energy
National Aeronautics and Space Administration
Center of Excellence in Astrophysics and Associated Technologies PFB-06
Millennium Center for Supernova Science through Programa Bicentenario de Ciencia y Tecnologia de CONICYT P06-045-F
Programa Iniciativa Cientifica Milenio de MIDEPLAN | es_CL |
Lenguage | dc.language.iso | en | es_CL |
Publisher | dc.publisher | IOP PUBLISHING LTD | es_CL |
Keywords | dc.subject | binaries: eclipsing | es_CL |
Título | dc.title | DISCOVERY AND CHARACTERIZATION OF AN EXTREMELY DEEP-ECLIPSING CATACLYSMIC VARIABLE: LSQ172554.8-643839 | es_CL |
Document type | dc.type | Artículo de revista | |