Star Formation in the Milky Way and Nearby Galaxies - Robert C ...
The integrated colors of galaxies, which are sensitive to their star formation histories, show a strongly bimodal dependence on stellar mass, with a relatively tight "red sequence" populated by galaxies with little or no current star formation, and a somewhat broader "blue sequence" or "blue cloud" of actively star-forming galaxies.
2024年1月7日 · model-independent, observational diagnostic for star and cluster formation and evolution, and for the evolutionary status of galaxies. 4. The distribution of star clusters shows three principal features in the UBVI CCD: a young cluster locus (YCL), a middle age plume (MAP), and an old globular cluster clump (OGC) 5.
[2412.01697] Galaxy Pairs in Cosmic Voids - arXiv.org
2024年12月2日 · We present a statistical analysis of different astrophysical properties of a sample of galaxy pairs in cosmic voids. The sample consists of 72 galaxy pairs with projected separations and relative radial velocities rp<100 h −1 kpc, ΔV < 500 kms −1 in the redshift range z<0.1.
Preferential occurrence of fast radio bursts in massive star-forming ...
2024年11月6日 · Fast radio bursts (FRBs) are millisecond-duration events detected from beyond the Milky Way. FRB emission characteristics favour highly magnetized neutron stars, or magnetars, as the sources 1, as...
Hypothesis is that the main-sequence is the locus of stars of different masses burning hydrogen in their cores. Can we now use the stellar structure equations to reproduce the observational data? lh set consists of nonlinear differential equations independent of M for the functions f1,f5...
Modelling emission lines in star-forming galaxies
2021年12月3日 · The locus of star-forming galaxies in the BPT plane is shown by the median [O III]/H β ratio (blue points with red borders). The median redshift of these 10 634 star-forming galaxies is z = 0.130.
mass-to-light ratios and the star formation histories of disc galaxies ...
2018年12月11日 · The input parameters (such as age and metallicity distribution) are the critical unknowns in producing a reliable colour locus for star-forming galaxies. Fortunately, new observations from GALEX to Spitzer combined with HST CMDs of nearby LSB galaxies (Schombert & McGaugh 2015) serve to guide those inputs.
Unveiling the uncharted Milky Way: Completing the galactic stellar …
6 天之前 · Two Earth-sized exoplanets orbiting nearby star detected. 10 hours ago. 0. New superionic conducting electrolyte could enhance stability of all-solid-state lithium metal batteries.
Star formation and AGN feedback in the local Universe: …
2022年9月21日 · In this paper, we combine data from the LOw Frequency ARray Two-meter Sky Survey (LoTSS) with data from one of the largest optical IFS surveys, Mapping Nearby Galaxies at Apache Point Observatory (MaNGA), to probe the star-forming properties of 307 local (z < 0.15) galaxies that host radio-detected AGN (RDAGN).
Where Are Stars Made? NASA’s Spitzer Spies a Hot Spot
2020年8月25日 · The Orion Nebula – another well-known star-forming region and a favorite observing target for amateur astronomers – occupies about the same size area in the sky. But W51 is actually much farther from Earth than Orion and thus much larger, and it’s about 75 times more luminous. While Orion contains four known O-type stars – the most ...