2022ApJ...930..126F

Query : 2022ApJ...930..126F

2022ApJ...930..126F - Astrophys. J., 930, 126-126 (2022/May-2)

The Low-redshift Lyman Continuum Survey. II. New Insights into LyC Diagnostics.

FLURY S.R., JASKOT A.E., FERGUSON H.C., WORSECK G., MAKAN K., CHISHOLM J., SALDANA-LOPEZ A., SCHAERER D., McCANDLISS S.R., XU X., WANG B., OEY M.S., FORD N.M., HECKMAN T., JI Z., GIAVALISCO M., AMORIN R., ATEK H., BLAIZOT J., BORTHAKUR S., CARR C., CASTELLANO M., DE BARROS S., DICKINSON M., FINKELSTEIN S.L., FLEMING B., FONTANOT F., GAREL T., GRAZIAN A., HAYES M., HENRY A., MAUERHOFER V., MICHEVA G., OSTLIN G., PAPOVICH C., PENTERICCI L., RAVINDRANATH S., ROSDAHL J., RUTKOWSKI M., SANTINI P., SCARLATA C., TEPLITZ H., THUAN T., TREBITSCH M., VANZELLA E. and VERHAMME A.

Abstract (from CDS):

The Lyman continuum (LyC) cannot be observed at the epoch of reionization (z >= 6) owing to intergalactic H I absorption. To identify LyC emitters (LCEs) and infer the fraction of escaping LyC, astronomers have developed various indirect diagnostics of LyC escape. Using measurements of the LyC from the Low-redshift Lyman Continuum Survey (LzLCS), we present the first statistical test of these diagnostics. While optical depth indicators based on Lyα, such as peak velocity separation and equivalent width, perform well, we also find that other diagnostics, such as the [O III]/[O II] flux ratio and star formation rate surface density, predict whether a galaxy is an LCE. The relationship between these galaxy properties and the fraction of escaping LyC flux suggests that LyC escape depends strongly on H I column density, ionization parameter, and stellar feedback. We find that LCEs occupy a range of stellar masses, metallicities, star formation histories, and ionization parameters, which may indicate episodic and/or different physical causes of LyC escape.

Journal keyword(s): Reionization - Galactic and extragalactic astronomy - Hubble Space Telescope - Ultraviolet astronomy - Emission line galaxies

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	NGC 2363A	HII	07 28 42.8	+69 11 21						~	588	3

Query : 2022ApJ...930..126F

Basic data :

NGC 2363A -- HII Region
Other object types:	`HII ()`, `G (Mrk)`
ICRS coord. (ep=J2000) :	`07 28 42.8 +69 11 21 [ ] D 2006ApJS..164...81M`
FK4 coord. (ep=B1950 eq=1950) :	`07 23 25.1 +69 17 29 [ ]`
Gal coord. (ep=J2000) :	`146.4481 +28.5181 [ ]`

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Mrk 71 NGC 2363A

References (588 between 1850 and 2026) (Total 588)
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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Data at NED - NASA/IPAC Extragalactic Database : NGC 2363A

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