the gas density threshold required for star formation, we define the edge of a galaxy as the outermost radial location associated with a significant drop in either past or ongoing in situ star formation. We explore ∼1000 low-inclination galaxies with a wide range in morphology (dwarfs to ...
Star formation is the key to understanding galaxy formation. Knowledge of the initial mass function, the rate of star formation, and its efficiency are essential inputs to understanding the large-scale structure of the universe. For galaxies, viewed as ensembles of stars, are the beacons that ...
内容提示: MNRAS 000, 1–14 (2019) Preprint 11 September 2019 Compiled using MNRAS L A T E X style f i le v3.0Star formation at the edge of the Local Group: a risingstar formation history in the isolated galaxy WLM ?Saundra M. Albers, 1 † Daniel R. Weisz, 1 ‡ Andrew A. ...
von Hippel, C. Simpson, & N. Manset ed., Astrophysical Ages and Times Scales Vol. 245 of Astronomical Society of the Pacific Confer- ence Series, Galaxy Formation One Star at a Time: New Information From the Kinematics of Field Stars in the Galaxy. pp 149-+...
cluster shows a nebular-dominated spectrum, low metallicity, high gas density and high electron temperature, hinting at a top-heavy initial mass function. These observations provide our first spectrophotometric view of a typical galaxy in its early stages, in a 600-million-year-old Universe....
We present the results of a CO line survey of 30 galaxies at moderate redshift (<italic>z</italic> ~ 0.2−0.6), with the IRAM 30 m telescope, with the goal to follow galaxy evolution and in particular the star formation efficiency (SFE) as defined by t
Observations of the interstellar medium are key to deciphering the physical processes regulating star formation in galaxies. However, observational uncertainties and detection limits can bias the interpretation unless carefully modeled. Here I re-analyze
The most distant galaxies detected were seen when the Universe was a scant 5% of its current age. At these times, progenitors of galaxies such as the Milky Way were about 10,000 times less massive. Using the James Webb Space Telescope (JWST) combined wit
We analyze the star formation properties of 16 infrared-selected, spectroscopically confirmed galaxy clusters at 1 z Spitzer/IRAC Shallow Cluster Survey (ISCS). We present new spectroscopic confirmation for six of these high-redshift clusters, five of which are at z > 1.35. Using infrared ...
Based on observations collected at the European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme(s) 105.B-0299. This paper makes use of the following ALMA data: ADS/JAO.ALMA#2019.1.01492.S. ALMA is a partnership of ESO (representing its member states), ...