A LYMAN BREAK GALAXY IN THE EPOCH OF REIONIZATION FROM HUBBLE SPACE TELESCOPE GRISM SPECTROSCOPY

被引：14

作者：

Rhoads, James E. ^{[1
]}

Malhotra, Sangeeta ^{[1
]}

Stern, Daniel ^{[2
]}

Dickinson, Mark ^{[3
]}

Pirzkal, Norbert ^{[4
]}

Spinrad, Hyron ^{[5
]}

Reddy, Naveen ^{[6
]}

Hathi, Nimish ^{[7
]}

Grogin, Norman ^{[4
]}

Koekemoer, Anton ^{[4
]}

Peth, Michael A. ^{[4
,8
]}

Cohen, Seth ^{[1
]}

Zheng, Zhenya ^{[1
]}

Budavari, Tamas ^{[8
]}

Ferreras, Ignacio ^{[9
]}

Gardner, Jonathan P. ^{[10
]}

Gronwall, Caryl ^{[11
,12
]}

Haiman, Zoltan ^{[13
]}

Kuemmel, Martin ^{[14
]}

Meurer, Gerhardt ^{[15
]}

Moustakas, Leonidas ^{[2
]}

Panagia, Nino ^{[4
,16
]}

Pasquali, Anna ^{[17
]}

Sahu, Kailash ^{[4
]}

Alighieri, Sperello di Serego ^{[16
]}

Somerville, Rachel ^{[18
]}

Straughn, Amber ^{[10
]}

Walsh, Jeremy ^{[19
]}

Windhorst, Rogier ^{[1
]}

Xu, Chun ^{[20
]}

Yan, Haojing ^{[21
]}

机构：

[1] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA

[2] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[3] Natl Opt Astron Observ, Tucson, AZ 85726 USA

[4] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[5] Univ Calif Berkeley, Berkeley, CA 94720 USA

[6] Univ Calif Riverside, Riverside, CA 92521 USA

[7] Observ Carnegie Inst Washington, Pasadena, CA 91101 USA

[8] Johns Hopkins Univ, Baltimore, MD USA

[9] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England

[10] NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Observat Cosmol Lab, Greenbelt, MD 20771 USA

[11] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA

[12] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA

[13] Columbia Univ, New York, NY USA

[14] Univ Sternwarte, D-81679 Munich, Germany

[15] Univ Western Australia, Int Ctr Radio Astron Res, Nedlands, WA 6009, Australia

[16] INAF Osservatorio Astrofis Catania, Catania, Italy

[17] Heidelberg Univ, Zentrum Astron, Astron Rechen Inst, D-69120 Heidelberg, Germany

[18] Rutgers State Univ, Piscataway, NJ USA

[19] European So Observ, Garching, Germany

[20] Acad Sinica, Shanghai Inst Tech Phys, Shanghai 200083, Peoples R China

[21] Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA

来源：

ASTROPHYSICAL JOURNAL | 2013年 / 773卷 / 01期

关键词：

galaxies: evolution; galaxies: formation; galaxies: high-redshift; LY-ALPHA EMITTERS; ULTRA DEEP FIELD; SIMILAR-TO; 7; EXTRAGALACTIC LEGACY SURVEY; LUMINOSITY FUNCTION; EMITTING GALAXIES; KECK SPECTROSCOPY; SLITLESS SPECTROSCOPY; WFC3/IR OBSERVATIONS; CANDIDATE GALAXIES;

D O I：

10.1088/0004-637X/773/1/32

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present observations of a luminous galaxy at z = 6.573-the end of the reionization epoch-which has been spectroscopically confirmed twice. The first spectroscopic confirmation comes from slitless Hubble Space Telescope Advanced Camera for Surveys grism spectra from the PEARS survey (Probing Evolution And Reionization Spectroscopically), which show a dramatic continuum break in the spectrum at rest frame 1216 angstrom. The second confirmation is done with Keck + DEIMOS. The continuum is not clearly detected with ground-based spectra, but high wavelength resolution enables the Ly alpha emission line profile to be determined. We compare the line profile to composite line profiles at z = 4.5. The Ly alpha line profile shows no signature of a damping wing attenuation, confirming that the intergalactic gas is ionized at z = 6.57. Spectra of Lyman breaks at yet higher redshifts will be possible using comparably deep observations with IR-sensitive grisms, even at redshifts where Ly alpha is too attenuated by the neutral intergalactic medium to be detectable using traditional spectroscopy from the ground.

引用

页数：7

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