2020MNRAS.499L.105M

Query : 2020MNRAS.499L.105M

2020MNRAS.499L.105M - Mon. Not. R. Astron. Soc., 499, L105-L110 (2020/November-3)

The discovery of the most UV-Ly α luminous star-forming galaxy: a young, dust- and metal-poor starburst with QSO-like luminosities.

MARQUES-CHAVES R., ALVAREZ-MARQUEZ J., COLINA L., PEREZ-FOURNON I., SCHAERER D., DALLA VECCHIA C., HASHIMOTO T., JIMENEZ-ANGEL C. and SHU Y.

Abstract (from CDS):

We report the discovery of BOSS-EUVLG1 at z = 2.469, by far the most luminous, almost un-obscured star-forming galaxy known at any redshift. First classified as a QSO within the Baryon Oscillation Spectroscopic Survey, follow-up observations with the Gran Telescopio Canarias reveal that its large luminosity, M_UV ≃ -24.40 and log(L_Lyα/erg s^–1) ≃ 44.0, is due to an intense burst of star formation, and not to an active galactic nucleus or gravitational lensing. BOSS-EUVLG1 is a compact (r_eff ≃ 1.2 kpc), young (4-5 Myr) starburst with a stellar mass log(M_*/M_☉) = 10.0 ± 0.1 and a prodigious star formation rate of ≃1000 M_☉ yr^–1. However, it is metal- and dust-poor [12 + log(O/H) = 8.13 ± 0.19, E(B - V) ≃ 0.07, log(L_IR/L_UV) < -1.2], indicating that we are witnessing the very early phase of an intense starburst that has had no time to enrich the ISM. BOSS-EUVLG1 might represent a short-lived (<100 Myr), yet important phase of star-forming galaxies at high redshift that has been missed in previous surveys. Within a galaxy evolutionary scheme, BOSS-EUVLG1 could likely represent the very initial phases in the evolution of massive quiescent galaxies, even before the dusty star-forming phase.

Journal keyword(s): galaxies: formation - 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	SDSS J122040.72+084238.1	QSO	12 20 40.728	+08 42 38.14						~	11	0

Query : 2020MNRAS.499L.105M

Basic data :

SDSS J122040.72+084238.1 -- Quasar

QSO (2014A&A), SBG (2020MNRAS), Opt (SDSS)

12 20 40.728 +08 42 38.14 (Optical) [ ] C 2014A&A...563A..54P

12 18 07.852 +08 59 16.72 [ ]

279.951025 +70.197742 [ ]

V(km/s) 253712 [186] / z(spectroscopic) 2.46579 [0.00062] / cz 739225.2 [185.9] (Opt) C 2015ApJS..219...12A

u (AB) 21.3807 [0.1335] D 2020ApJS..250....8L

g (AB) 20.9832 [0.0439] C 2020ApJS..250....8L

r (AB) 20.9349 [0.0547] C 2020ApJS..250....8L

i (AB) 20.7986 [0.0732] C 2020ApJS..250....8L

z (AB) 20.9514 [0.2266] D 2020ApJS..250....8L

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SDSS J122040.72+084238.1

References (11 between 1850 and 2026) (Total 11)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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