Rieko MOMOSE

JSPS Fellow (Carnegie Observatories)

About Rieko MOMOSE

I am an Astronomer and currently a postdoc researcher at Carnegie Observatories. My primarily interest is in the galaxy formation and evolution across cosmic time. I am also interested in how different galaxy populations link each other. Particularly, I try to unveil these questions in terms of the gas cycle in and around galaxies. I have studied the interstellar, circumngalactic and intergalactic medium (ISM, CGM and IGM) based on observational data. I also investigated it with numerical simulations. I present my research in detail below. I also do a number of outreach activities, giving talks in stargazing and public lectures.

What's NEW! Our latest results was press released from the University of Tokyo (Sorry only in Japanese).

　

AFFILIATION
Carnegie Observatories
ADRESS
813 Santa Barbara Street, Pasadena, California, 91101 USA
TEL
+1 (626) 577-1122
E-MAIL
rmomose@carnegiescience.edu

Research & Interests

CV

Apr. 2022 -- Present
JSPS fellow (RRA), Carnegie Observatories
Aug. 2021 -- Mar. 2022
Project Researcher, Kavli IPMU, The University of Tokyo
Apr. 2018 -- Jul. 2021
JSPS fellow (RPD), Department of Astronomy, School of Science, The University of Tokyo
Nov. 2015 -- Mar. 2018
Assistant Research Scholar (MOST fellow), National Tsing Hua University in Taiwan
Apr. 2015 -- Oct. 2015
Research Experts, National Astronomical Observatory of Japan
Apr. 2014 -- Mar. 2015
Project Researcher, Institute for Cosmic Ray Research, The University of Tokyo
Apr. 2012 -- Mar. 2014
ICRR Fellow, Institute for Cosmic Ray Research, The University of Tokyo
Apr. 2009 -- Mar. 2012
PhD. Student, Dept. of Astronomy, University of Tokyo
Apr. 2007 -- Mar. 2009
MSc, Dept. of Astronomy, University of Tokyo
Apr. 2003 -- Mar. 2007
BSc, Dept of Education, Tokyo Gakugei University

Updated CV is found in here (last update is May 2022)

Research

IGM

The link between the IGM and galaxies is key to understanding the evolution of baryonic matter and galaxies. In order to shed more light on the IGM–galaxy connection, I have conducted a cross-correlation (CC) analysis with cosmological hydrodynamical simulations (Shimizu et al. 2019) and observations in archive (Lee et al. 2016, 2018), particularly focusing on the difference of CC functions depending on galactic properties, such as mass, star formation rate and populations (Momose et al. 2021a, b, c). The results of Momose et al. 2021c had been press released.

CGM

The process of galaxy formation and evolution must be closely coupled with the scale of the CGM. In order to identify a key parameter that determines the CGM scale, I have investigated the connection of CGM-galaxy with Lyα emission as a tracer of the CGM. The extended Lyα emission feature around a galaxy is called the Lyα halos (LAHs). I have explored LAHs especially around Lyα emitters (LAE) and quasars. You can find those of results in Momose et al. 2014, 2016, 2019.

ISM

Quantitative studies of star formation in galaxies have yielded the empirical correlation between star formation rate and surface gas density, which is known as Kennicutt-Schmidt law (KS law: Schmidt 1959, Kennicutt 1998). One of unresolved questions in this area is to assess the variation of such an empirical correlation in different galactic environments. In order to address this question, I have studied the KS law (at a resolution of 500 pc) within 10 nearby galaxies using CO(J=1–0) line data together with its difference on galactic structures. Please read Momose et al. 2010, 2013.

Others

I am also interested in several topics.