NEAR-ULTRAVIOLET SPECTROSCOPY of STAR-FORMING GALAXIES from eBOSS: SIGNATURES of UBIQUITOUS GALACTIC-SCALE OUTFLOWS

The Astrophysical Journal 815.1 (2015): 48 reproduced by permission of the AAS

Detalles Bibliográficos
Autores: Zhu, G. B., Comparat, J., Kneib, J., Delubac, T., Raichoor, A., Dawson, K. S., Yèche, C., Zhou, X., Schneider, D. P.
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/674423
Acceso en línea:http://hdl.handle.net/10486/674423
https://dx.doi.org/10.1088/0004-637X/815/1/48
Access Level:acceso abierto
Palabra clave:Galaxies: evolution
Galaxies: ISM
Intergalactic medium
Quasars: absorption lines
Surveys
Ultraviolet: galaxies
Fisión
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spelling NEAR-ULTRAVIOLET SPECTROSCOPY of STAR-FORMING GALAXIES from eBOSS: SIGNATURES of UBIQUITOUS GALACTIC-SCALE OUTFLOWSZhu, G. B.Comparat, J.Kneib, J.Delubac, T.Raichoor, A.Dawson, K. S.Yèche, C.Zhou, X.Schneider, D. P.Galaxies: evolutionGalaxies: ISMIntergalactic mediumQuasars: absorption linesSurveysUltraviolet: galaxiesFisiónThe Astrophysical Journal 815.1 (2015): 48 reproduced by permission of the AASWe present rest-frame near-ultraviolet (NUV) spectroscopy of star-forming galaxies (SFGs) at 0.6 < z < 1.2 from the Extended Baryon Oscillation Spectroscopic Survey (eBOSS) in SDSS-IV. One of the eBOSS programs is to obtain 2″ (about 15 kpc) fiber spectra of about 200,000 emission-line galaxies (ELGs) at redshift z ≥ 0.6. We use the data from the pilot observations of this program, including 8620 spectra of SFGs at 0.6 < z < 1.2. The median composite spectra of these SFGs at 2200 A < λ < 4000 A feature asymmetric, preferentially blueshifted non-resonant emission, Fe ii∗, and blueshifted resonant absorption, e.g., Fe ii and Mg ii, indicating ubiquitous outflows driven by star formation at these redshifts. For the absorption lines, we find a variety of velocity profiles with different degrees of blueshift. Comparing our new observations with the literature, we do not observe the non-resonant emission in the small-aperture (<40 pc) spectra of local star-forming regions with the Hubble Space Telescope, and find the observed line ratios in the SFG spectra to be different from those in the spectra of local star-forming regions, as well as those of quasar absorption-line systems in the same redshift range. We introduce an outflow model that can simultaneously explain the multiple observed properties and suggest that the variety of absorption velocity profiles and the line ratio differences are caused by scattered fluorescent emission filling in on top of the absorption in the large-aperture eBOSS spectra. We develop an observation-driven, model-independent method to correct the emission infill to reveal the true absorption profiles. Finally, we show that the strengths of both the non-resonant emission and the emission-corrected resonant absorption increase with [O ii] λλ3727, 3730 rest equivalent width and luminosity, with a slightly larger dependence on the former. Our results show that the eBOSS and future dark-energy surveys (e.g., Dark Energy Spectroscopic Instrument survey and Prime Focus Spectrograph survey) will provide rich data sets of rest-frame NUV spectroscopy for astrophysical applicationsG.B.Z. started this work when he was visiting Princeton University in 2014 December and he would like to thank Michael Strauss and Jim Gunn for their hospitality. He also thanks Bruce Draine, Tim Heckman, Claus Leitherer, Jason X. Prochaska, and Rosie Wise for useful discussions. G.B.Z. acknowledges support provided by NASA through Hubble Fellowship grant #HST-HF2-51351 awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under contract NAS 5-26555. We thank an anonymous referee for helpful comments that have helped improve the paper. J.C. acknowledges financial support from MINECO (Spain) under project number AYA2012-31101. J.-P.K. and T.D. acknowledge support from the LIDA ERC advanced grant. A.R. acknowledges funding from the P2IO LabEx (ANR-10-LABX-0038) in the framework “Investissements d’Avenir” (ANR-11-IDEX-0003-01) managed by the French National Research Agency (ANR)Institute of Physics PublishingDepartamento de Física TeóricaFacultad de Ciencias20152015-12-10research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/674423https://dx.doi.org/10.1088/0004-637X/815/1/48reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/6744232026-06-23T12:46:27Z
dc.title.none.fl_str_mv NEAR-ULTRAVIOLET SPECTROSCOPY of STAR-FORMING GALAXIES from eBOSS: SIGNATURES of UBIQUITOUS GALACTIC-SCALE OUTFLOWS
title NEAR-ULTRAVIOLET SPECTROSCOPY of STAR-FORMING GALAXIES from eBOSS: SIGNATURES of UBIQUITOUS GALACTIC-SCALE OUTFLOWS
spellingShingle NEAR-ULTRAVIOLET SPECTROSCOPY of STAR-FORMING GALAXIES from eBOSS: SIGNATURES of UBIQUITOUS GALACTIC-SCALE OUTFLOWS
Zhu, G. B.
Galaxies: evolution
Galaxies: ISM
Intergalactic medium
Quasars: absorption lines
Surveys
Ultraviolet: galaxies
Fisión
title_short NEAR-ULTRAVIOLET SPECTROSCOPY of STAR-FORMING GALAXIES from eBOSS: SIGNATURES of UBIQUITOUS GALACTIC-SCALE OUTFLOWS
title_full NEAR-ULTRAVIOLET SPECTROSCOPY of STAR-FORMING GALAXIES from eBOSS: SIGNATURES of UBIQUITOUS GALACTIC-SCALE OUTFLOWS
title_fullStr NEAR-ULTRAVIOLET SPECTROSCOPY of STAR-FORMING GALAXIES from eBOSS: SIGNATURES of UBIQUITOUS GALACTIC-SCALE OUTFLOWS
title_full_unstemmed NEAR-ULTRAVIOLET SPECTROSCOPY of STAR-FORMING GALAXIES from eBOSS: SIGNATURES of UBIQUITOUS GALACTIC-SCALE OUTFLOWS
title_sort NEAR-ULTRAVIOLET SPECTROSCOPY of STAR-FORMING GALAXIES from eBOSS: SIGNATURES of UBIQUITOUS GALACTIC-SCALE OUTFLOWS
dc.creator.none.fl_str_mv Zhu, G. B.
Comparat, J.
Kneib, J.
Delubac, T.
Raichoor, A.
Dawson, K. S.
Yèche, C.
Zhou, X.
Schneider, D. P.
author Zhu, G. B.
author_facet Zhu, G. B.
Comparat, J.
Kneib, J.
Delubac, T.
Raichoor, A.
Dawson, K. S.
Yèche, C.
Zhou, X.
Schneider, D. P.
author_role author
author2 Comparat, J.
Kneib, J.
Delubac, T.
Raichoor, A.
Dawson, K. S.
Yèche, C.
Zhou, X.
Schneider, D. P.
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Física Teórica
Facultad de Ciencias
dc.subject.none.fl_str_mv Galaxies: evolution
Galaxies: ISM
Intergalactic medium
Quasars: absorption lines
Surveys
Ultraviolet: galaxies
Fisión
topic Galaxies: evolution
Galaxies: ISM
Intergalactic medium
Quasars: absorption lines
Surveys
Ultraviolet: galaxies
Fisión
description The Astrophysical Journal 815.1 (2015): 48 reproduced by permission of the AAS
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-12-10
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/674423
https://dx.doi.org/10.1088/0004-637X/815/1/48
url http://hdl.handle.net/10486/674423
https://dx.doi.org/10.1088/0004-637X/815/1/48
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Institute of Physics Publishing
publisher.none.fl_str_mv Institute of Physics Publishing
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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