Quasar Sightline and Galaxy Evolution (QSAGE) survey – I. The galaxy environment of O vi absorbers up to z = 1.4 around PKS 0232−04
Quasar Sightline and Galaxy Evolution (QSAGE) survey – I. The galaxy environment of O vi absorbers up to z = 1.4 around PKS 0232−04
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类星体视线和星系演化 (QSAGE) 调查 – I. PKS 0232−04 周围 z = 1.4 范围内 O vi 吸收体的星系环境
DOI:
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发表时间:
2018
影响因子:
4.8
通讯作者:
J. Prochaska
中科院分区:
文献类型:
--
作者:
R. Bielby;J. Stott;F. Cullen;T. Tripp;J. Burchett;M. Fumagalli;S. Morris;N. Tejos;R. Crain;R. Bower;J. Prochaska
We present the first results from a study of O vi absorption around galaxies at z < 1.44 using data from a near-infrared grism spectroscopic Hubble Space Telescope Large Programme, the Quasar Sightline and Galaxy Evolution (QSAGE) survey. QSAGE is the first grism galaxy survey to focus on the circumgalactic medium at z ∼ 1, providing a blind survey of the galaxy population. The galaxy sample is H α flux limited (f(H α) > 2 × 10−17 erg s−1 cm−2) at 0.68 < z < 1.44, corresponding to ≳0.2–0.8 M⊙ yr−1. In this first of 12 fields, we combine the galaxy data with high-resolution STIS and COS spectroscopy of the background quasar to study O vi in the circumgalactic medium. At z ∼ 1, we find O vi absorption systems up to b ∼ 350 kpc (∼4Rvir) from the nearest detected galaxy. Further, we find ${sim }50{{
m per cent}}$ of ≳1 M⊙ yr−1 star-forming galaxies within 2Rvir show no associated O vi absorption to a limit of at least N(O vi) = 1013.9 cm−2. That we detect O vi at such large distances from galaxies and that a significant fraction of star-forming galaxies show no detectable O vi absorption disfavours outflows from ongoing star formation as the primary medium traced by these absorbers. Instead, by combining our own low- and high-redshift data with existing samples, we find tentative evidence for many strong (N(O vi) > 1014 cm−2) O vi absorption systems to be associated with M⋆ ∼ 109.5–10 M⊙ mass galaxies (Mhalo ∼ 1011.5–12 M⊙ dark matter haloes), and infer that they may be tracing predominantly collisionally ionized gas within the haloes of such galaxies.
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DOI:
10.3847/1538-4357/aac884
发表时间:
2018-03
期刊:
The Astrophysical Journal
影响因子:
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作者:
J. Stern;C. Faucher-Giguère;J. Hennawi;Zachary Hafen;S. Johnson;D. Fielding
通讯作者:
J. Stern;C. Faucher-Giguère;J. Hennawi;Zachary Hafen;S. Johnson;D. Fielding
DOI:
10.1086/587486
发表时间:
2007-06
期刊:
The Astrophysical Journal Supplement Series
影响因子:
--
作者:
T. Tripp;K. Sembach;D. Bowen;B. Savage;E. Jenkins;N. Lehner;P. Richter
通讯作者:
T. Tripp;K. Sembach;D. Bowen;B. Savage;E. Jenkins;N. Lehner;P. Richter
影响因子:
4.8
作者:
T. Callingham;Marius Cautun;A. Deason;C. Frenk;Wenting Wang;F. G'omez;R. Grand;F. Marinacci
通讯作者:
T. Callingham;Marius Cautun;A. Deason;C. Frenk;Wenting Wang;F. G'omez;R. Grand;F. Marinacci
影响因子:
4.8
作者:
Bielby, R.;Crighton, N. H. M.;Cantalupo, S.
通讯作者:
Cantalupo, S.