Spectral energy distribution fitting of hetdex pilot survey lyα emitters in cosmos and goods-n

Alex Hagen, Robin Ciardullo, Caryl Gronwall, Viviana Acquaviva, Joanna Bridge, Gregory R. Zeimann, Guillermo A. Blanc, Nicholas A. Bond, Steven L. Finkelstein, Mimi Song, Eric Gawiser, Derek B. Fox, Henry Gebhardt, A. I. Malz, Donald P. Schneider, Niv Drory, Karl Gebhardt, Gary J. Hill

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

We use broadband photometry extending from the rest-frame UV to the near-IR to fit the individual spectral energy distributions of 63 bright (L(Lyα) > 1043 erg s-1) Lyα emitting galaxies (LAEs) in the redshift range 1.9 < z < 3.6. We find that these LAEs are quite heterogeneous, with stellar masses that span over three orders of magnitude, from 7.5 < log M/M < 10.5.Moreover, although most LAEs have small amounts of extinction, some high-mass objects have stellar reddenings as large as E(B-V) 0.4. Interestingly, in dusty objects the optical depths for Lyα and the UV continuum are always similar, indicating that Lyα photons are not undergoing many scatters before escaping their galaxy. In contrast, the ratio of optical depths in low-reddening systems can vary widely, illustrating the diverse nature of the systems. Finally, we show that in the star-formation-rate-log-mass diagram, our LAEs fall above the "main-sequence" defined by z 3 continuum selected star-forming galaxies. In this respect, they are similar to submillimeter-selected galaxies, although most LAEs have much lower mass.

Original languageEnglish (US)
Article number59
JournalAstrophysical Journal
Volume786
Issue number1
DOIs
StatePublished - May 1 2014

Fingerprint

cosmos
spectral energy distribution
emitters
galaxies
optical thickness
optical depth
energy
continuums
star formation rate
stellar mass
erg
photometry
extinction
diagram
diagrams
broadband
stars
distribution
goods
photons

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Hagen, Alex ; Ciardullo, Robin ; Gronwall, Caryl ; Acquaviva, Viviana ; Bridge, Joanna ; Zeimann, Gregory R. ; Blanc, Guillermo A. ; Bond, Nicholas A. ; Finkelstein, Steven L. ; Song, Mimi ; Gawiser, Eric ; Fox, Derek B. ; Gebhardt, Henry ; Malz, A. I. ; Schneider, Donald P. ; Drory, Niv ; Gebhardt, Karl ; Hill, Gary J. / Spectral energy distribution fitting of hetdex pilot survey lyα emitters in cosmos and goods-n. In: Astrophysical Journal. 2014 ; Vol. 786, No. 1.
@article{ed569301e02341688800eba288180020,
title = "Spectral energy distribution fitting of hetdex pilot survey lyα emitters in cosmos and goods-n",
abstract = "We use broadband photometry extending from the rest-frame UV to the near-IR to fit the individual spectral energy distributions of 63 bright (L(Lyα) > 1043 erg s-1) Lyα emitting galaxies (LAEs) in the redshift range 1.9 < z < 3.6. We find that these LAEs are quite heterogeneous, with stellar masses that span over three orders of magnitude, from 7.5 < log M/M < 10.5.Moreover, although most LAEs have small amounts of extinction, some high-mass objects have stellar reddenings as large as E(B-V) 0.4. Interestingly, in dusty objects the optical depths for Lyα and the UV continuum are always similar, indicating that Lyα photons are not undergoing many scatters before escaping their galaxy. In contrast, the ratio of optical depths in low-reddening systems can vary widely, illustrating the diverse nature of the systems. Finally, we show that in the star-formation-rate-log-mass diagram, our LAEs fall above the {"}main-sequence{"} defined by z 3 continuum selected star-forming galaxies. In this respect, they are similar to submillimeter-selected galaxies, although most LAEs have much lower mass.",
author = "Alex Hagen and Robin Ciardullo and Caryl Gronwall and Viviana Acquaviva and Joanna Bridge and Zeimann, {Gregory R.} and Blanc, {Guillermo A.} and Bond, {Nicholas A.} and Finkelstein, {Steven L.} and Mimi Song and Eric Gawiser and Fox, {Derek B.} and Henry Gebhardt and Malz, {A. I.} and Schneider, {Donald P.} and Niv Drory and Karl Gebhardt and Hill, {Gary J.}",
year = "2014",
month = "5",
day = "1",
doi = "10.1088/0004-637X/786/1/59",
language = "English (US)",
volume = "786",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "1",

}

Hagen, A, Ciardullo, R, Gronwall, C, Acquaviva, V, Bridge, J, Zeimann, GR, Blanc, GA, Bond, NA, Finkelstein, SL, Song, M, Gawiser, E, Fox, DB, Gebhardt, H, Malz, AI, Schneider, DP, Drory, N, Gebhardt, K & Hill, GJ 2014, 'Spectral energy distribution fitting of hetdex pilot survey lyα emitters in cosmos and goods-n', Astrophysical Journal, vol. 786, no. 1, 59. https://doi.org/10.1088/0004-637X/786/1/59

Spectral energy distribution fitting of hetdex pilot survey lyα emitters in cosmos and goods-n. / Hagen, Alex; Ciardullo, Robin; Gronwall, Caryl; Acquaviva, Viviana; Bridge, Joanna; Zeimann, Gregory R.; Blanc, Guillermo A.; Bond, Nicholas A.; Finkelstein, Steven L.; Song, Mimi; Gawiser, Eric; Fox, Derek B.; Gebhardt, Henry; Malz, A. I.; Schneider, Donald P.; Drory, Niv; Gebhardt, Karl; Hill, Gary J.

In: Astrophysical Journal, Vol. 786, No. 1, 59, 01.05.2014.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Spectral energy distribution fitting of hetdex pilot survey lyα emitters in cosmos and goods-n

AU - Hagen, Alex

AU - Ciardullo, Robin

AU - Gronwall, Caryl

AU - Acquaviva, Viviana

AU - Bridge, Joanna

AU - Zeimann, Gregory R.

AU - Blanc, Guillermo A.

AU - Bond, Nicholas A.

AU - Finkelstein, Steven L.

AU - Song, Mimi

AU - Gawiser, Eric

AU - Fox, Derek B.

AU - Gebhardt, Henry

AU - Malz, A. I.

AU - Schneider, Donald P.

AU - Drory, Niv

AU - Gebhardt, Karl

AU - Hill, Gary J.

PY - 2014/5/1

Y1 - 2014/5/1

N2 - We use broadband photometry extending from the rest-frame UV to the near-IR to fit the individual spectral energy distributions of 63 bright (L(Lyα) > 1043 erg s-1) Lyα emitting galaxies (LAEs) in the redshift range 1.9 < z < 3.6. We find that these LAEs are quite heterogeneous, with stellar masses that span over three orders of magnitude, from 7.5 < log M/M < 10.5.Moreover, although most LAEs have small amounts of extinction, some high-mass objects have stellar reddenings as large as E(B-V) 0.4. Interestingly, in dusty objects the optical depths for Lyα and the UV continuum are always similar, indicating that Lyα photons are not undergoing many scatters before escaping their galaxy. In contrast, the ratio of optical depths in low-reddening systems can vary widely, illustrating the diverse nature of the systems. Finally, we show that in the star-formation-rate-log-mass diagram, our LAEs fall above the "main-sequence" defined by z 3 continuum selected star-forming galaxies. In this respect, they are similar to submillimeter-selected galaxies, although most LAEs have much lower mass.

AB - We use broadband photometry extending from the rest-frame UV to the near-IR to fit the individual spectral energy distributions of 63 bright (L(Lyα) > 1043 erg s-1) Lyα emitting galaxies (LAEs) in the redshift range 1.9 < z < 3.6. We find that these LAEs are quite heterogeneous, with stellar masses that span over three orders of magnitude, from 7.5 < log M/M < 10.5.Moreover, although most LAEs have small amounts of extinction, some high-mass objects have stellar reddenings as large as E(B-V) 0.4. Interestingly, in dusty objects the optical depths for Lyα and the UV continuum are always similar, indicating that Lyα photons are not undergoing many scatters before escaping their galaxy. In contrast, the ratio of optical depths in low-reddening systems can vary widely, illustrating the diverse nature of the systems. Finally, we show that in the star-formation-rate-log-mass diagram, our LAEs fall above the "main-sequence" defined by z 3 continuum selected star-forming galaxies. In this respect, they are similar to submillimeter-selected galaxies, although most LAEs have much lower mass.

UR - http://www.scopus.com/inward/record.url?scp=84898935212&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84898935212&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/786/1/59

DO - 10.1088/0004-637X/786/1/59

M3 - Article

AN - SCOPUS:84898935212

VL - 786

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 59

ER -