Dust correction factors over 0 < z < 3 in massive star-forming galaxies derived from a stacking analysis of Herschel data

Dust correction factors over 0 < z < 3 in massive star-forming galaxies derived from a stacking analysis of Herschel data
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根据赫歇尔数据的叠加分析得出的大质量恒星形成星系中超过 0 < z < 3 的尘埃校正因子

DOI:
10.1051/0004-6361/201424607
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发表时间:
2014
影响因子:
6.5
通讯作者:
I. Oteo
I. Oteo
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
I. Oteo

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我们使用Herschel/PACS中的叠加分析来研究通常用于估计高红移大质量恒星形成(SF)星系的总恒星形成率(SFR)的几个尘埃校正因子的准确性。我们还分析了叠加对SFR和恒星质量之间关系的暗示以及特定SFR(sSFR = SFR/M)的红移演化。我们发现,大质量SF星系的尘埃性质随红移而变化,即z = 2−3的星系比z = 1 f或给定UV连续谱斜率和恒星质量的星系衰减得更大。因此,一个单一的IRX-β或尘埃质量关系不能用来恢复在0 z 3的大质量SF星系的总SFR。这可能对更高红移的研究有影响,在那里,一个单一的IRX-β关系推导出的局部星爆通常被认为是有效的。然而,我们发现的证据表明,当地的关系可能是有效的,至少到z 1,在那里更蓝,质量较小的星系可以通过堆叠检测。光谱能量分布与恒星布居模板的拟合程序给出了在这里研究的所有红移下的尘埃校正SFR的高估值(约0.3 - 0.5 dex的logSFR)。我们发现,在log(M_∞/M_∞)≥ 10的大质量星系中,星星形成的主序斜率比以前的研究结果更平坦,并且很好地恢复了以前研究中大质量星系sSFR的红移演化.
We use a stacking analysis in Herschel/PACS to study the accuracy of several dust-correction factors that are typically employed to estimate the total star-formation rate (SFR) of high-redshift, massive, star-forming (SF) galaxies. We also analyze what stacking suggests about the relation between SFR and stellar mass and the redshift evolution of the specific SFR (sSFR = SFR/M∗). We find that the dust properties of massive SF galaxies evolve with redshift, that is, galaxies at z ∼ 2−3 are more attenuated than at z ∼ 1f or a given UV continuum slope and stellar mass. As a consequence, a single IRX-β or dust-mass relation cannot be used to recover the total SFR of massive SF galaxies at 0 z 3. This might have implications for studies at higher redshifts, where a single IRX-β relation derived for local starbursts is usually assumed to be valid. However, we find evidence that the local relations might be valid at least up to z ∼ 1, where bluer and less massive galaxies can be detected through stacking. The spectral energy distribution fitting procedure with stellar population templates gives overestimated values (about 0.3‐0.5 dex in logSFR) of the dust-corrected SFR at all redshifts studied here. We find that the slope of the main-sequence of star formation is flatter than previously found in massive galaxies with log(M∗/M� ) ≥ 10, and the redshift evolution of the sSFR reported in previous works in massive galaxies is well recovered.
DOI: 10.1086/516593
发表时间: 2007-01
期刊: The Astrophysical Journal Supplement Series
影响因子: --
作者:
M. Zamojski;D. Schiminovich;R. Rich;B. Mobasher;A. Koekemoer;P. Capak;Y. Taniguchi;S. Sasaki;S. Sasaki;H. McCracken;Y. Mellier;E. Bertin;H. Aussel;H. Aussel;D. Sanders;O. Fèvre;O. Ilbert;M. Salvato;D. Thompson;J. Kartaltepe;N. Scoville;N. Scoville;T. Barlow;K. Forster;P. Friedman;D. C. Martin;P. Morrissey;S. Neff;M. Seibert;T. Small;T. Wyder;L. Bianchi;J. Donas;T. Heckman;Young-Wook Lee;B. F. Madore;B. Milliard;A. Szalay;B. Welsh;Sukyoung K. Yi
通讯作者: M. Zamojski;D. Schiminovich;R. Rich;B. Mobasher;A. Koekemoer;P. Capak;Y. Taniguchi;S. Sasaki;S. Sasaki;H. McCracken;Y. Mellier;E. Bertin;H. Aussel;H. Aussel;D. Sanders;O. Fèvre;O. Ilbert;M. Salvato;D. Thompson;J. Kartaltepe;N. Scoville;N. Scoville;T. Barlow;K. Forster;P. Friedman;D. C. Martin;P. Morrissey;S. Neff;M. Seibert;T. Small;T. Wyder;L. Bianchi;J. Donas;T. Heckman;Young-Wook Lee;B. F. Madore;B. Milliard;A. Szalay;B. Welsh;Sukyoung K. Yi
S.Bildhauer:“全球不均匀宇宙中的宇宙微波背景”皇家天文学会月刊。
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