Title: The Molecular Gas Properties in Luminous infrared galaxy and Low Surface Brightness Galaxy
Speaker: Tianwen Cao 曹天文
Institute: Xiamen University
Time: 14:30-16:30, Thursday, November, 03
Location: Physics Building 552
Tencent Meeting ID: 576-3815-8985
Luminous Infrared Galaxies and Low Surface Brightness Galaxies are two extreme cases in Kennicutt-Schmidt Law. They provide ideal labs for knowing star formation conditions. CO can trace molecular gas over a range of densities/temperatures and is related to star formation. Taking advantage of the data from ALMA, We studied the warm gas traced by CO(6-5) in a Luminous Infrared Galaxy NGC5135 and discussed the possible heating mechanisms of the Mid-J CO emission line. We investigated the star formation and molecular gas content in Low Surface Brightness Galaxies by JCMT, APEX, and IRAM observations.
I will review our results about the star formation and molecular gas properties in these two kinds of galaxies.
I am interested in sub-millimeter astrophysics and working on Low Surface Brightness Galaxies.
I explore the molecular gas content, chemical evolution, and stellar population of Low Surface Brightness Galaxies.
2010-2014, Bachelor of Space Science and Technology, Shandong University, Weihai, China.
2014 - 2022, PhD. Astrophysics, National Astronomical Observatories of China, Chinese Academy of Sciences (NAOC), China.
2017-2018, visiting student,Chinese Academy of Sciences South America Center for Astronomy (CASSACA), Chile.
2018-2019, visiting student, Pontificia Universidad Catolica de Chile, Santiago (PUC), Chile.
1. Cao, Tianwen; Lu, Nanyao; Xu, C. Kevin. et al (2018), ApJ, 866, 117C: “ALMA Observation of NGC 5135: The Circumnuclear CO (6-5) and Dust Continuum Emission at 45 pc Resolution”
2. Cao, Tian-Wen; Wu, Hong; Du, Wei. et al (2017), AJ, 154, 116C: “Molecular Gas and Star-formation in Low Surface Brightness Galaxies”
3. Cao, Tian-Wen; Yang, Ming; Wu, Hong; Zhang, et al. (2016), Ap&SS, 361, 293C: “Spectral identiﬁcation of the u-band variable sources in two LAMOST ﬁelds”
4. Lu, Nanyao; Cao, Tianwen; Díaz-Santos, Tanio. et al. (2018), ApJ, 864, 38L: “CO (7-6), [C I] 370 m, and [N II] 205 m Line Emission of the QSO BRI 1335-0417 at Redshift 4.407"