Matches in SemOpenAlex for { <https://semopenalex.org/work/W3100165268> ?p ?o ?g. }
- W3100165268 endingPage "L28" @default.
- W3100165268 startingPage "L28" @default.
- W3100165268 abstract "The He II lambda 1640 emission line has been suggested as a direct probe of Population III (Pop III) stars at high-redshift, since it can arise from highly energetic ionizing photons associated with hot, metal free stars. We use the HST WFC3/F130N IR narrowband filter to probe He II lambda 1640 emission in galaxy IOK-1 at z=6.96. The sensitivity of this measurement is >5x deeper than for previous measurements. From this deep narrowband imaging, combined with broadband observations in the F125W and F160W filters, we find the He II flux to be 1.2+/- 1.0x 10^-18 ergs/s/cm^2, corresponding to a 1sigma upper limit on the Pop III star formation rate (SFR) of ~ 0.5 M_sun/yr for the case of a Salpeter IMF with 50-500M_sun and mass loss. Given that the broadband measurements can be fit with a UV continuum spectral flux density of ~ 4.85x 10^-10x lambda ^-2.46 ergs/s/cm^2/A, which corresponds to an overall SFR of ~16+/-2.6 M_sun/yr, massive Pop III stars represent < 6% of the total star formation. This measurement places the strongest limit yet on metal-free star formation at high redshift, although the exact conversion from He II luminosity to Pop III SFR is highly uncertain due to the unknown IMF, stellar evolution, and photoionization effects. Although we have not detected He II lambda 1640 at more than the 1.2sigma level, our work suggests that a > 3sigma level detection is possible with JWST." @default.
- W3100165268 created "2020-11-23" @default.
- W3100165268 creator A5000095367 @default.
- W3100165268 creator A5002795789 @default.
- W3100165268 creator A5003656561 @default.
- W3100165268 creator A5014522902 @default.
- W3100165268 creator A5025532100 @default.
- W3100165268 creator A5027226774 @default.
- W3100165268 creator A5041588252 @default.
- W3100165268 creator A5067196911 @default.
- W3100165268 creator A5067199828 @default.
- W3100165268 creator A5077018414 @default.
- W3100165268 date "2011-07-07" @default.
- W3100165268 modified "2023-10-18" @default.
- W3100165268 title "PROBING POPULATION III STARS IN GALAXY IOK-1 AT <i>z</i> = 6.96 THROUGH He II EMISSION" @default.
- W3100165268 cites W1572126587 @default.
- W3100165268 cites W1622230873 @default.
- W3100165268 cites W1797061140 @default.
- W3100165268 cites W1968646907 @default.
- W3100165268 cites W1969070606 @default.
- W3100165268 cites W1969393539 @default.
- W3100165268 cites W1975314963 @default.
- W3100165268 cites W1986303447 @default.
- W3100165268 cites W2019428480 @default.
- W3100165268 cites W2023968025 @default.
- W3100165268 cites W2029178265 @default.
- W3100165268 cites W2029492108 @default.
- W3100165268 cites W2033994097 @default.
- W3100165268 cites W2040912209 @default.
- W3100165268 cites W2041225095 @default.
- W3100165268 cites W2058983697 @default.
- W3100165268 cites W2072886111 @default.
- W3100165268 cites W2078875989 @default.
- W3100165268 cites W2079227246 @default.
- W3100165268 cites W2088292047 @default.
- W3100165268 cites W2104311895 @default.
- W3100165268 cites W2114150813 @default.
- W3100165268 cites W2117503363 @default.
- W3100165268 cites W2136969532 @default.
- W3100165268 cites W2142238829 @default.
- W3100165268 cites W2149072120 @default.
- W3100165268 cites W2157504125 @default.
- W3100165268 cites W2160253850 @default.
- W3100165268 cites W3023613093 @default.
- W3100165268 cites W3098337129 @default.
- W3100165268 cites W3099338243 @default.
- W3100165268 cites W3100168510 @default.
- W3100165268 cites W3100621008 @default.
- W3100165268 cites W3101625444 @default.
- W3100165268 cites W3101867535 @default.
- W3100165268 cites W3102093540 @default.
- W3100165268 cites W3102587696 @default.
- W3100165268 cites W3102948242 @default.
- W3100165268 cites W3104592512 @default.
- W3100165268 cites W3104904830 @default.
- W3100165268 cites W3105075406 @default.
- W3100165268 cites W3105098764 @default.
- W3100165268 cites W3105870208 @default.
- W3100165268 cites W3106192025 @default.
- W3100165268 cites W3106308495 @default.
- W3100165268 cites W3106526798 @default.
- W3100165268 cites W3125814071 @default.
- W3100165268 cites W4292508449 @default.
- W3100165268 cites W4300521843 @default.
- W3100165268 doi "https://doi.org/10.1088/2041-8205/736/2/l28" @default.
- W3100165268 hasPublicationYear "2011" @default.
- W3100165268 type Work @default.
- W3100165268 sameAs 3100165268 @default.
- W3100165268 citedByCount "29" @default.
- W3100165268 countsByYear W31001652682012 @default.
- W3100165268 countsByYear W31001652682013 @default.
- W3100165268 countsByYear W31001652682014 @default.
- W3100165268 countsByYear W31001652682015 @default.
- W3100165268 countsByYear W31001652682017 @default.
- W3100165268 countsByYear W31001652682018 @default.
- W3100165268 countsByYear W31001652682020 @default.
- W3100165268 countsByYear W31001652682021 @default.
- W3100165268 countsByYear W31001652682022 @default.
- W3100165268 crossrefType "journal-article" @default.
- W3100165268 hasAuthorship W3100165268A5000095367 @default.
- W3100165268 hasAuthorship W3100165268A5002795789 @default.
- W3100165268 hasAuthorship W3100165268A5003656561 @default.
- W3100165268 hasAuthorship W3100165268A5014522902 @default.
- W3100165268 hasAuthorship W3100165268A5025532100 @default.
- W3100165268 hasAuthorship W3100165268A5027226774 @default.
- W3100165268 hasAuthorship W3100165268A5041588252 @default.
- W3100165268 hasAuthorship W3100165268A5067196911 @default.
- W3100165268 hasAuthorship W3100165268A5067199828 @default.
- W3100165268 hasAuthorship W3100165268A5077018414 @default.
- W3100165268 hasBestOaLocation W31001652681 @default.
- W3100165268 hasConcept C120665830 @default.
- W3100165268 hasConcept C121332964 @default.
- W3100165268 hasConcept C12287442 @default.
- W3100165268 hasConcept C125857072 @default.
- W3100165268 hasConcept C1276947 @default.
- W3100165268 hasConcept C144024400 @default.
- W3100165268 hasConcept C149923435 @default.
- W3100165268 hasConcept C150846664 @default.