Infrared Spectroscopy of Short-Period Cataclysmic Variables

Ishioka Ryoko; Sekiguchi Kazuhiro; Maehara Hiroyuki

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Infrared Spectroscopy of Short-Period Cataclysmic Variables

机译：短周期催化变量的红外光谱

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Wepresentnear-infraredspectraforfivedwarfnovaewithshortorbitalperiods.Weperformedfittingsofthespectralenergydistributions(SEDs)byassumingapower-lawdistributionfortheaccretiondiskandusingtemplatespectraoflate-typedwarfsforthesecondarystar.TwoareWZSgea€“orWXCet-typestars,whosespectrashowwaterabsorptionfeatures,andoneofthemshowsK$$;$$IandNa$$;$$Iabsorptionlinesinthe$$J$$-band.WefindthatthesecondarycontributionstotheoverallSEDarelargerinWZSgestarsthaninERUMastars.TheSEDfittingsuggestsM9andL1typedwarfcompanionsforourWZSgesystems,andanM2dwarfforourERUMastar.Wediscussthedirectrelationshipbetweenthehightemperaturesofsecondarystarsandhighmass-transferratesinERUMastars.SDSSJ013701.06a€“091234.9istheonlyobjectshowingaspectrumdominatedbythesecondarycomponent.ThespectrumstronglysuggeststhattheevolutionarypathofSDSSJ013701.06a€“091234.9isdifferentfromthatofordinaryCVs,andthisobjectisacandidateofEIPsc-likesystems.

机译：Wepresentnear-infraredspectraforfivedwarfnovaewithshortorbitalperiods.Weperformedfittingsofthespectralenergydistributions（的SED）byassumingapower-lawdistributionfortheaccretiondiskandusingtemplatespectraoflate-typedwarfsforthesecondarystar.TwoareWZSgea€“orWXCet-typestars，whosespectrashowwaterabsorptionfeatures，andoneofthemshowsK $$; $$ IandNa $$; $$ Iabsorptionlinesinthe $$Ĵ$$ - band.WefindthatthesecondarycontributionstotheoverallSEDarelargerinWZSgestarsthaninERUMastars.TheSEDfittingsuggestsM9andL1typedwarfcompanionsforourWZSgesystems，andanM2dwarfforourERUMastar。我们讨论了ERUMa星中次级星的高温与高质量传输率之间的直接关系。SDSSJ013701.06a“ 091234.9是唯一一个显示由次级分量主导的光谱的对象。该光谱强烈建议，从这个系统来，SDSSJ013701.06的系统演化路径可以从SD到091234.9。

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《PASJ: Publications of the Astronomical Society of Japan》 |2007年第5期|共页
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Ishioka Ryoko; Sekiguchi Kazuhiro; Maehara Hiroyuki;
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Infrared Spectroscopy of Short-Period Cataclysmic Variables

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