2017MNRAS.467L..51Y

Query : 2017MNRAS.467L..51Y

2017MNRAS.467L..51Y - Mon. Not. R. Astron. Soc., 467, L51-L55 (2017/May-1)

Upper limits on the mass and luminosity of Population III-dominated galaxies.

YAJIMA H. and KHOCHFAR S.

Abstract (from CDS):

We here derive upper limits on the mass and luminosity of Population III (POPIII) dominated proto-galaxies based on the collapse of primordial gas under the effect of angular momentum loss via Lyα radiation drag and the gas accretion on to a galactic centre. Our model predicts that POPIII-dominated galaxies at z ∼ 7 are hosted by haloes with M_h ∼ 1.5 x 10⁸-1.1 x 10⁹ M_☉, that they have Lyα luminosities of L_Lyα ∼ 3.0 x 10⁴²-2.1 x 10⁴³ erg/s, stellar mass of M_star ∼ 0.8 x 10⁵-2.5 x 10⁶ M_☉ and outflowing gas with velocities V_out ∼ 40 km s^- 1^ due to Lyα radiation pressure. We show that the POPIII galaxy candidate CR7 violates the derived limits on stellar mass and Lyα luminosity and thus is unlikely to be a POPIII galaxy. POPIII-dominated galaxies at z ∼ 7 have He II line emission that is ∼1-3 orders of magnitude lower than that of Lyα, they have high Lyα equivalent width of >= 300 Å and should be found close to bright star-forming galaxies. The He II 1640 Å line is in comfortable reach of next generation telescopes, like the James Webb Space Telescope (JWST) or Thirty Meter Telescope (TMT).

Journal keyword(s): radiative transfer - stars: Population III - galaxies: evolution - galaxies: formation - galaxies: high-redshift - galaxies: high-redshift

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	COSMOS2015 338645	EmG	10 00 58.01148	+01 48 15.3000						~	101	0

Query : 2017MNRAS.467L..51Y

Basic data :

COSMOS2015 338645 -- Emission-line galaxy

EmG (2015ApJ,[MSS2015b],...), G (2014MNRAS), G? ([BDM2012])

10 00 58.01148 +01 48 15.3000 (Optical) [ ] C 2018ApJ...858...77H

09 58 23.14210 +02 02 42.5200 [ ]

237.35785109 +41.98705862 [ ]

V(km/s) 289607 [~] / z(emission) 6.607 [~] / cz 1980729 [~] (Opt) D 2022ApJ...926..230N

J 24.62 [0.10] D 2015ApJ...808..139S

H 25.08 [0.14] D 2015ApJ...808..139S

K 25.15 [0.15] D 2015ApJ...808..139S

r (AB) 30.9 [~] D 2021ApJ...911...78O

i (AB) 26.93 [~] D 2018ApJ...858...77H

z (AB) 25.30 [0.09] C 2022ApJ...926..230N

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`COSMOS2015 338645`	`[BDM2012] 30425`	`[HCS2018] J150.2417+01.8042`	`[NJZ2022] 29`
`HSCS J100058+014815`	`[BDM2012] 28400`	`[MSS2015b] CR7`

References (101 between 1850 and 2026) (Total 101)
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