The opacity of the intergalactic medium measured along quasar sightlines at z~6
We publicly release a new sample of 34 medium resolution quasar spectra at 5.77 ≤ z em ≤ 6.54 observed with the Echellette Spectrograph and Imager on the Keck telescope. This quasar sample represents an ideal laboratory to study the intergalactic medium (IGM) during the end stages of the epoch of re...
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Weitere Verfasser: | , |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2018 August 30
|
| In: |
The astrophysical journal
Year: 2018, Jahrgang: 864, Heft: 1 |
| ISSN: | 1538-4357 |
| DOI: | 10.3847/1538-4357/aad4fd |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.3847/1538-4357/aad4fd Verlag, Volltext: https://doi.org/10.3847%2F1538-4357%2Faad4fd 
|
| Verfasserangaben: | Anna-Christina Eilers, Frederick B. Davies, and Joseph F. Hennawi |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1670630137 | ||
| 003 | DE-627 | ||
| 005 | 20220816203010.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 190806s2018 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.3847/1538-4357/aad4fd |2 doi | |
| 035 | |a (DE-627)1670630137 | ||
| 035 | |a (DE-599)KXP1670630137 | ||
| 035 | |a (OCoLC)1341235383 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Eilers, Anna-Christina |e VerfasserIn |0 (DE-588)1172448450 |0 (DE-627)1041211031 |0 (DE-576)514628235 |4 aut | |
| 245 | 1 | 4 | |a The opacity of the intergalactic medium measured along quasar sightlines at z~6 |c Anna-Christina Eilers, Frederick B. Davies, and Joseph F. Hennawi |
| 246 | 3 | 3 | |a at z ~ 6 |
| 264 | 1 | |c 2018 August 30 | |
| 300 | |a 22 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Gesehen am 01.09.2020 | ||
| 520 | |a We publicly release a new sample of 34 medium resolution quasar spectra at 5.77 ≤ z em ≤ 6.54 observed with the Echellette Spectrograph and Imager on the Keck telescope. This quasar sample represents an ideal laboratory to study the intergalactic medium (IGM) during the end stages of the epoch of reionization, and constrain the timing and morphology of the phase transition. For a subset of 23 of our highest signal-to-noise ratio spectra (S/N > 7, per 10 km s−1 pixel), we present a new measurement of the Lyα forest opacity spanning the redshift range 4.8 ≲ z ≲ 6.3. We carefully eliminate spectral regions that could be causing biases in our measurements due to additional transmitted flux in the proximity zone of the quasars, or extra absorption caused by strong intervening absorption systems along the line of sight. We compare the observed evolution of the IGM opacity with redshift to predictions from a hydrodynamical simulation with uniform ultraviolet background (UVB) radiation, as well as two semi-numerical patchy reionization models, one with a fluctuating UVB and another with a fluctuating temperature field. Our measurements show a steep rise in opacity at z ≳ 5.0 and an increased scatter and thus support the picture of a spatially inhomogeneous reionization process, consistent with previous work. However, we measure significantly higher optical depths at 5.3 ≲ z ≲ 5.7 than previous studies, which reduces the contrast between the highest opacity Gunn-Peterson troughs and the average opacity trend of the IGM, which may relieve some of the previously noted tension between these measurements and reionization models. | ||
| 700 | 1 | |a Davies, Frederick B. |0 (DE-588)1192316126 |0 (DE-627)1670632318 |4 oth | |
| 700 | 1 | |a Hennawi, Joseph F. |0 (DE-588)1100381996 |0 (DE-627)859333345 |0 (DE-576)469668407 |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |t The astrophysical journal |d London : Institute of Physics Publ., 1995 |g 864(2018,1) Artikel-Nummer 53, 22 Seiten |h Online-Ressource |w (DE-627)269019219 |w (DE-600)1473835-1 |w (DE-576)077662733 |x 1538-4357 |7 nnas |a The opacity of the intergalactic medium measured along quasar sightlines at z~6 |
| 773 | 1 | 8 | |g volume:864 |g year:2018 |g number:1 |g extent:22 |a The opacity of the intergalactic medium measured along quasar sightlines at z~6 |
| 856 | 4 | 0 | |u https://doi.org/10.3847/1538-4357/aad4fd |x Verlag |x Resolving-System |3 Volltext |
| 856 | 4 | 0 | |u https://doi.org/10.3847%2F1538-4357%2Faad4fd |x Verlag |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20190806 | ||
| 993 | |a Article | ||
| 994 | |a 2018 | ||
| 998 | |g 1172448450 |a Eilers, Anna-Christina |m 1172448450:Eilers, Anna-Christina |d 130000 |e 130000PE1172448450 |k 0/130000/ |p 1 |x j | ||
| 999 | |a KXP-PPN1670630137 |e 3504254181 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"recId":"1670630137","title":[{"title":"The opacity of the intergalactic medium measured along quasar sightlines at z~6","title_sort":"opacity of the intergalactic medium measured along quasar sightlines at z~6"}],"name":{"displayForm":["Anna-Christina Eilers, Frederick B. Davies, and Joseph F. Hennawi"]},"language":["eng"],"type":{"media":"Online-Ressource","bibl":"article-journal"},"physDesc":[{"extent":"22 S."}],"note":["Gesehen am 01.09.2020"],"person":[{"display":"Eilers, Anna-Christina","role":"aut","given":"Anna-Christina","family":"Eilers","roleDisplay":"VerfasserIn"},{"role":"oth","display":"Davies, Frederick B.","given":"Frederick B.","family":"Davies"},{"given":"Joseph F.","display":"Hennawi, Joseph F.","role":"oth","family":"Hennawi"}],"origin":[{"dateIssuedDisp":"2018 August 30","dateIssuedKey":"2018"}],"id":{"doi":["10.3847/1538-4357/aad4fd"],"eki":["1670630137"]},"relHost":[{"pubHistory":["Vol. 447 (1995) [?]-"],"type":{"media":"Online-Ressource","bibl":"periodical"},"language":["eng"],"name":{"displayForm":["publ. in coll. with the American Astronomical Society. S. Chandrasekhar, managing ed"]},"part":{"year":"2018","extent":"22","volume":"864","text":"864(2018,1) Artikel-Nummer 53, 22 Seiten","issue":"1"},"disp":"The opacity of the intergalactic medium measured along quasar sightlines at z~6The astrophysical journal","title":[{"subtitle":"an international review of spectroscopy and astronomical physics","title_sort":"astrophysical journal","title":"The astrophysical journal"}],"recId":"269019219","titleAlt":[{"title":"The astrophysical journal / 1"},{"title":"ApJ"}],"id":{"issn":["1538-4357"],"eki":["269019219"],"zdb":["1473835-1"]},"origin":[{"publisherPlace":"London ; Chicago, Ill. [u.a.]","dateIssuedDisp":"[1995?]-","publisher":"Institute of Physics Publ. ; Univ. of Chicago Press"}],"note":["Gesehen am 18.01.2022","Fortsetzung der Druck-Ausgabe"],"physDesc":[{"extent":"Online-Ressource"}]}],"titleAlt":[{"title":"at z ~ 6"}]} | ||
| SRT | |a EILERSANNAOPACITYOFT2018 | ||