Matches in SemOpenAlex for { <https://semopenalex.org/work/W3100682178> ?p ?o ?g. }
- W3100682178 endingPage "140" @default.
- W3100682178 startingPage "140" @default.
- W3100682178 abstract "We present Keck/NIRSPEC spectroscopic observations of three Lyman alpha emitting galaxies (LAEs) at z ~ 2.3 discovered with the HETDEX pilot survey. We detect Halpha, [OIII], and Hbeta emission from two galaxies at z = 2.29 and 2.49, designated HPS194 and HPS256, respectively, representing the first detection of multiple rest-frame optical emission lines in galaxies at high-redshift selected on the basis of their Lyman alpha emission. The redshifts of the Lyman alpha emission from these galaxies are offset redward of the systemic redshifts by Delta_v = 162 +/- 37 (photometric) +/- 42 (systematic) km/s for HPS194, and Delta_v = 36 +/- 35 +/- 18 km/s for HPS256. An interpretation for HPS194 is that a large-scale outflow may be occurring in its interstellar medium. The emission line ratios imply that neither LAE hosts an active galactic nucleus. Using the upper limits on the [NII] emission we place meaningful constraints on the gas-phase metallicities in these two LAEs of Z < 0.17 and < 0.28 Zsol (1 sigma). Measuring the stellar masses of these objects via spectral energy distribution (SED) fitting (~ 10^10 and 6 x 10^8 Msol, respectively), we study the nature of LAEs in a mass-metallicity plane. At least one of these two LAEs appears to be more metal poor than continuum-selected star-forming galaxies at the same redshift and stellar mass, implying that objects exhibiting Lyman alpha emission may be systematically less chemically enriched than the general galaxy population. We use the SEDs of these two galaxies to show that neglecting the emission lines when fitting stellar population models to the observed photometry can result in overestimates of the population age by orders of magnitude, and the stellar mass by a factor of ~ 2. This effect is particularly important at z > 7, where similarly strong emission lines may masquerade in the photometry as a 4000 A break (abridged)." @default.
- W3100682178 created "2020-11-23" @default.
- W3100682178 creator A5008915976 @default.
- W3100682178 creator A5010251600 @default.
- W3100682178 creator A5017381535 @default.
- W3100682178 creator A5020342910 @default.
- W3100682178 creator A5031717109 @default.
- W3100682178 creator A5041943671 @default.
- W3100682178 creator A5049491652 @default.
- W3100682178 creator A5071420730 @default.
- W3100682178 creator A5077555623 @default.
- W3100682178 creator A5078390799 @default.
- W3100682178 creator A5080017076 @default.
- W3100682178 creator A5088888180 @default.
- W3100682178 date "2011-02-22" @default.
- W3100682178 modified "2023-09-26" @default.
- W3100682178 title "THE HETDEX PILOT SURVEY. III. THE LOW METALLICITIES OF HIGH-REDSHIFT Lyα GALAXIES" @default.
- W3100682178 cites W1485888419 @default.
- W3100682178 cites W1509944718 @default.
- W3100682178 cites W1520494241 @default.
- W3100682178 cites W1538590063 @default.
- W3100682178 cites W1540682879 @default.
- W3100682178 cites W1547987941 @default.
- W3100682178 cites W1590192245 @default.
- W3100682178 cites W1602680202 @default.
- W3100682178 cites W1614857317 @default.
- W3100682178 cites W1622230873 @default.
- W3100682178 cites W1801581886 @default.
- W3100682178 cites W1831692117 @default.
- W3100682178 cites W1939919849 @default.
- W3100682178 cites W1967876247 @default.
- W3100682178 cites W1972232491 @default.
- W3100682178 cites W1972507852 @default.
- W3100682178 cites W1972726718 @default.
- W3100682178 cites W1973977373 @default.
- W3100682178 cites W1975080613 @default.
- W3100682178 cites W1977417150 @default.
- W3100682178 cites W1986303447 @default.
- W3100682178 cites W1989210743 @default.
- W3100682178 cites W1989503195 @default.
- W3100682178 cites W1990491187 @default.
- W3100682178 cites W1991982448 @default.
- W3100682178 cites W1994033192 @default.
- W3100682178 cites W1994671833 @default.
- W3100682178 cites W1996459334 @default.
- W3100682178 cites W2000126425 @default.
- W3100682178 cites W2008462357 @default.
- W3100682178 cites W2011654732 @default.
- W3100682178 cites W2017533950 @default.
- W3100682178 cites W2017980472 @default.
- W3100682178 cites W2018148195 @default.
- W3100682178 cites W2018489450 @default.
- W3100682178 cites W2022930874 @default.
- W3100682178 cites W2024859124 @default.
- W3100682178 cites W2027302370 @default.
- W3100682178 cites W2029466024 @default.
- W3100682178 cites W2036036577 @default.
- W3100682178 cites W2040441522 @default.
- W3100682178 cites W2042369320 @default.
- W3100682178 cites W2043153949 @default.
- W3100682178 cites W2043464591 @default.
- W3100682178 cites W2044373083 @default.
- W3100682178 cites W2044447445 @default.
- W3100682178 cites W2048623741 @default.
- W3100682178 cites W2049822747 @default.
- W3100682178 cites W2053265856 @default.
- W3100682178 cites W2054851301 @default.
- W3100682178 cites W2058210847 @default.
- W3100682178 cites W2062713883 @default.
- W3100682178 cites W2067857092 @default.
- W3100682178 cites W2070499796 @default.
- W3100682178 cites W2074037441 @default.
- W3100682178 cites W2075063599 @default.
- W3100682178 cites W2079087882 @default.
- W3100682178 cites W2082592033 @default.
- W3100682178 cites W2083365390 @default.
- W3100682178 cites W2087250740 @default.
- W3100682178 cites W2100986230 @default.
- W3100682178 cites W2105369461 @default.
- W3100682178 cites W2105541361 @default.
- W3100682178 cites W2108179281 @default.
- W3100682178 cites W2114951275 @default.
- W3100682178 cites W2130290556 @default.
- W3100682178 cites W2151062050 @default.
- W3100682178 cites W2151475148 @default.
- W3100682178 cites W2156440026 @default.
- W3100682178 cites W2157917411 @default.
- W3100682178 cites W2158528198 @default.
- W3100682178 cites W2163212281 @default.
- W3100682178 cites W2167495287 @default.
- W3100682178 cites W2591864124 @default.
- W3100682178 cites W2793977486 @default.
- W3100682178 cites W2950620835 @default.
- W3100682178 cites W3098337129 @default.
- W3100682178 cites W3098784892 @default.
- W3100682178 cites W3099155372 @default.
- W3100682178 cites W3099592130 @default.
- W3100682178 cites W3100133847 @default.