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Metallicities and dust content of proximate damped Lyman alpha systems in the Sloan Digital Sky Survey
Metallicities dust content proximate damped Lyman alpha systems
2011/1/11
Composite spectra of 85 proximate absorbers (log N(HI)>20 and velocity difference between the absorption and emission redshift, dv<10,000 km/s) in the SDSS are used to investigate the trends of metal ...
The HETDEX Pilot Survey III: The Low Metallicities of High-Redshift Lyman Alpha Galaxies
galaxies evolution
2010/11/9
We present the results of Keck/NIRSPEC spectroscopic observations of three Ly emitting galaxies (LAEs)at z∼ 2.3 discoveredwith the HETDEX pilot survey. We detectH , [O III], and H emission fro...
Metallicities of galaxies in the nearby Lynx-Cancer void
Metallicities of galaxies nearby Lynx-Cancer void
2010/11/16
Does the void environment have a sizable effect on the evolution of dwarf galaxies? If yes, the best probes should be the most fragile least massive dwarfs.We compiled a sample of about one hundred dw...
Metallicities of Young Open Clusters I: NGC 7160 and NGC 2232
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/24
We present a moderate-resolution spectroscopic analysis of the 10-25 Myr clusters NGC 7160 and NGC 2232, using observations obtained with the WIYN 3.5-m telescope. Both NGC 7160 and NGC 2232 are found...
Gravities and metallicities of stars with protoplanetary disks
stars Gravities metallicities protoplanetary disks
2009/7/1
Gravities and metallicities of stars with protoplanetary disks。
Radial gradients and metallicities in the galactic disk
Radial gradients metallicities galactic disk
2009/6/11
Radial gradients and metallicities in the galactic disk。