#author("2022-05-12T04:34:12+00:00","default:wwwadm","wwwadm")
[[IoA_Seminar]]
#contents
* 講演リスト [#occ7a02f]
** No. 381: 10 May 2022 (Tue) 16:15 - 17:15 [#q621959c]
*** Speaker: 西村優里（東京大学天文学教室） ／ Yuri Nishimura (University of Tokyo, Department of Astronomy) [#ic3c24b1]
*** Title: Molecular spectroscopy in local and high-redshift galaxies: What do "dense gas tracers" mean? [#o0879c29]
Language: Japanese
Abstract:
Thanks to the technical advancement of (sub)millimeter observing
facilities, a great number of molecular lines are now routinely observed
with high sensitivity and high angular resolution. These molecular lines
and line ratios are useful tools for studying physical, kinematic, and
chemical properties of extragalactic systems. To fully exploit line
diagnostics, it is important to relate different size scale observations:
detailed understanding of nearby systems by spatially-resolved observations
is essential to better interpretation of more distant objects which cannot
be observed at the same physical resolution.
In this talk, I will present (1) 10 pc-scale multiline mapping toward a
Galactic star-forming region W3(OH); (2) spatially- and spectrally-resolved
HCN and HCO+ observations of local (ultra)luminous infrared galaxies from
the CONquest sample (for more detail on CONquest, see Falstad+2021); and
(3) ALMA Band 3 (rest-frame ~350 GHz) line survey toward the Cloverleaf, a
gravitationally-lensed quasar at z=2.56. I will first discuss which
molecular emission arises from which part of the molecular cloud, and then
focus on how galactic-scale dynamics, such as outflows, can alter line
ratios.
![[PukiWiki]](image/pukiwiki.png "[PukiWiki]")
