GALEX AND PAN-STARRS1 DISCOVERY OF SN IIP 2010aq: THE FIRST FEW DAYS AFTER SHOCK BREAKOUT IN A RED SUPERGIANT STAR
GALEX AND PAN-STARRS1 DISCOVERY OF SN IIP 2010aq: THE FIRST FEW DAYS AFTER SHOCK BREAKOUT IN A RED SUPERGIANT STAR
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GALEX 和 PAN-STARRS1 发现 SN IIP 2010aq：红超巨星冲击爆发后的最初几天
DOI：
10.1088/2041-8205/720/1/l77
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Gezari S
中科院分区：
文献类型：
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作者：
Gezari S
We present the early UV and optical light curve of Type IIP supernova (SN) 2010aq at z= 0.0862, and compare it to analytical models for thermal emission following SN shock breakout in a red supergiant star. SN 2010aq was discovered in joint monitoring between the Galaxy Evolution Explorer (GALEX) Time Domain Survey (TDS) in the NUV and the Pan-STARRS1 Medium Deep Survey (PS1 MDS) in the g, r, i, and z bands. The GALEX and Pan-STARRS1 observations detect the SN less than 1 day after the shock breakout, measure a diluted blackbody temperature of 31, 000±6000 K 1 day later, and follow the rise in the UV/optical light curve over the next 2 days caused by the expansion and cooling of the SN ejecta. The high signal-to-noise ratio of the simultaneous UV and optical photometry allows us to fit for a progenitor star radius of 700±200R☉, the size of a red supergiant star. An excess in UV emission two weeks after shock breakout compared with SNe well fitted by model atmosphere-code synthetic spectra with solar metallicity is best explained by suppressed line blanketing due to a lower metallicity progenitor star in SN 2010aq. Continued monitoring of PS1 MDS fields by the GALEX TDS will increase the sample of early UV detections of Type II SNe by an order of magnitude and probe the diversity of SN progenitor star properties.
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DOI：
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发表时间：
2009
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发表时间：
1978
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影响因子：
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作者：
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DOI：
10.1111/j.1365-2966.2010.16626.x
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2009
影响因子：
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DOI：
10.1111/j.1365-2966.2010.16611.x
发表时间：
2010
影响因子：
4.8
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