Candidate Population III stellar complex at z = 6.629 in the MUSE Deep Lensed Field
Candidate Population III stellar complex at z = 6.629 in the MUSE Deep Lensed Field
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MUSE 深透镜视场中 z = 6.629 处的候选族 III 恒星复合体
DOI:
10.1093/mnrasl/slaa041
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发表时间:
2020
影响因子:
--
通讯作者:
Sani, E
中科院分区:
文献类型:
--
作者:
Vanzella, E;Meneghetti, M;Caminha, G B;Castellano, M;Calura, F;Rosati, P;Grillo, C;Dijkstra, M;Gronke, M;Sani, E
We discovered a strongly lensed (μ ≳ 40) Ly α emission atz= 6.629 (S/N ≃ 18) in the MUSE Deep Lensed Field (MDLF) targeting the Hubble Frontier Field (HFF) galaxy cluster MACS J0416. Dedicated lensing simulations imply that the Ly α emitting region necessarily crosses the caustic. The arc-like shape of the Ly α extends 3 arcsec on the observed plane and is the result of two merged multiple images, each one with a de-lensed Ly α luminosityL≲ 2.8 × 1040erg s−1arising from a confined region (≲150 pc effective radius). A spatially unresolvedHubble Space Telescope(HST) counterpart is barely detected at S/N ≃ 2 after stacking the near-infrared bands, corresponding to an observed (intrinsic) magnitudem1500≳ 30.8 (≳35.0). The inferred rest-frame Ly α equivalent width is EW0> 1120 Å if the IGM transmission isTIGM< 0.5. The low luminosities and the extremely large Ly α EW0match the case of a Population III (Pop III) star complex made of several dozens stars (∼104M⊙) that irradiate an Hiiregion crossing the caustic. While the Ly α and stellar continuum are among the faintest ever observed at this redshift, the continuum and the Ly α emissions could be affected by differential magnification, possibly biasing the EW0estimate. The aforementioned tentativeHSTdetection tends to favour a large EW0, making such a faint Pop III candidate a key target for theJames Webb Space Telescopeand Extremely Large Telescopes.
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DOI:
10.3847/2041-8213/aade4b
发表时间:
2018-09
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
M. Maseda;R. Bacon;M. Franx;J. Brinchmann;J. Schaye;L. Boogaard;N. Bouché;R. Bouwens;S. Cantalupo;T. Contini;T. Hashimoto;H. Inami;R. Marino;S. Muzahid;T. Nanayakkara;J. Richard;K. Schmidt;A. Verhamme;L. Wisotzki
通讯作者:
M. Maseda;R. Bacon;M. Franx;J. Brinchmann;J. Schaye;L. Boogaard;N. Bouché;R. Bouwens;S. Cantalupo;T. Contini;T. Hashimoto;H. Inami;R. Marino;S. Muzahid;T. Nanayakkara;J. Richard;K. Schmidt;A. Verhamme;L. Wisotzki
DOI:
10.1088/0004-637x/728/1/52
发表时间:
2010
期刊:
The Astrophysical Journal
影响因子:
--
作者:
P. Laursen;J. Sommer;A. Razoumov
通讯作者:
A. Razoumov
影响因子:
4.8
作者:
E. Visbal;Z. Haiman;G. Bryan
通讯作者:
G. Bryan
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
H. Inami;R. Bacon;J. Brinchmann;J. Richard;T. Contini;S. Conseil;S. Hamer;M. Akhlaghi;N. Bouché;B. Clément;G. Desprez;A. Drake;T. Hashimoto;F. Leclercq;M. Maseda;L. Michel;M. Paalvast;L. Tresse;E. Ventou;W. Kollatschny;L. Boogaard;H. Finley;R. Marino;J. Schaye;L. D. Lyon;L. Observatory;U. Porto;U. Toulouse;Universitat Gottingen;E. Zurich;L. I. A. Potsdam
通讯作者:
L. I. A. Potsdam
DOI:
10.1051/0004-6361/201629297
发表时间:
2016
期刊:
arXiv: Astrophysics of Galaxies
影响因子:
--
作者:
G. Caminha;C. Grillo;P. Rosati;I. Balestra;A. Mercurio;E. Vanzella;A. Biviano;K. Caputi;C. Delgado;W. Karman;M. Lombardi;M. Meneghetti;B. Sartoris;P. Tozzi
通讯作者:
P. Tozzi