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The complete sample and mass loss rate of red supergiants in M31 and M33
报告题目:The complete sample and mass loss rate of red supergiants in M31 and M33
报 告  人:姜碧沩 教授(北京师范大学)
报告时间:2021-06-09 10:00:00
报告地点:天文楼212报告厅

英文论文:

Red supergiants (RSGs) are massive Population I stars, the major progenitor of supernovae. With strong stellar wind, RSGs are an important source of interstellar dust, in particularly for the high redshift galaxies in the early universe when low-mass stars have not evolved to the asymptotic giant branch phase. However, the estimation of contribution of RSGs to interstellar dust suffers large uncertainty mainly because there is no complete sample of RSGs in any galaxy. This talk will present our recent work on building a complete sample of RSGs in M31 and M33 using a novel method based on the near-infrared color-color diagram to remove the foreground dwarf stars. Furthermore, the mass loss rate of RSGs and their whole contribution to the interstellar dust in M31 and M33 are calculated with the complete sample. Discussions on the potential exploration of the sample and the relation of mass loss rate with stellar parameters will be presented as well.


百度百科:

姜(jiang)碧沩,杭州(zhou)师(shi)范本(ben)(ben)科大学(xue)(xue)天文系(xi)讲师(shi)。1989年毕业后(hou)于郑州(zhou)师(shi)范院(yuan)校天文系(xi),1997年于欧美全方位(wei)的(de)科学(xue)(xue)论(lun)述(shu)大技术学(xue)(xue)校高中(zhong)刷快理学(xue)(xue)博士生本(ben)(ben)科学(xue)(xue)位(wei),不停去(qu)做星(xing)际导电(dian)介质(zhi)和(he)恒星(xing)天文学(xue)(xue)的(de)科学(xue)(xue)论(lun)述(shu)。主(zhu)耍科学(xue)(xue)论(lun)述(shu)科研课题有:演进肺麟癌恒星(xing)的(de)星(xing)周气味和(he)玦(jue)尘,本(ben)(ben)星(xing)系(xi)群星(xing)系(xi)中(zhong)的(de)红超(chao)巨星(xing)河变和(he)的(de)质(zhi)量流动率,从红外到分光(guang)(guang)(guang)光(guang)(guang)(guang)度计(ji)的(de)星(xing)际消光(guang)(guang)(guang)规(gui)率,超(chao)新(xin)星(xing)遗址(zhi)的(de)消光(guang)(guang)(guang)和(he)玦(jue)尘。