2024ApJ...973L..55L

Query : 2024ApJ...973L..55L

2024ApJ...973L..55L - Astrophys. J., 973, L55 (2024/October-1)

JWST Observations of Starbursts: Massive Star Clusters in the Central Starburst of M82.

LEVY R.C., BOLATTO A.D., MAYYA D., CUEVAS-OTAHOLA B., TARANTINO E., BOYER M.L., BOOGAARD L.A., BOKER T., CRONIN S.A., DALE D.A., DONAGHUE K., EMIG K.L., FISHER D.B., GLOVER S.C.O., HERRERA-CAMUS R., JIMENEZ-DONAIRE M.J., KLESSEN R.S., LENKIC L., LEROY A.K., DE LOOZE I., MEIER D.S., MILLS E.A.C., OTT J., RELANO M., VEILLEUX S., VILLANUEVA V., WALTER F. and VAN DER WERF P.P.

Abstract (from CDS):

We present a near-infrared (NIR) candidate star cluster catalog for the central kiloparsec of M82 based on new JWST NIRCam images. We identify star cluster candidates using the F250M filter, finding 1357 star cluster candidates with stellar masses >104M⊙. Compared to previous optical catalogs, nearly all (87%) of the candidates we identify are new. The star cluster candidates have a median intrinsic cluster radius of ≈1 pc and stellar masses up to 106M⊙. By comparing the color-color diagram to dust-free YGGDRASIL stellar population models, we estimate that the star cluster candidates have AV ∼ 3-24 mag, corresponding to A2.5μm ∼ 0.3-2.1 mag. There is still appreciable dust extinction toward these clusters into the NIR. We measure the stellar masses of the star cluster candidates, assuming ages of 0 and 8 Myr. The slope of the resulting cluster mass function is β = 1.9 ± 0.2, in excellent agreement with studies of star clusters in other galaxies.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Star clusters - Young massive clusters - Young star clusters - Starburst galaxies - Infrared galaxies

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 5

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Number of rows : 5
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 NAME M 81-82 Group GrG 09 55 +69.1           ~ 758 0
2 MGG 11 Cl* 09 55 50.2 +69 40 45           ~ 72 0
3 MGG 9 Cl* 09 55 50.5 +69 40 45           ~ 27 0
4 2MASS J09555095+6940302 G 09 55 50.95632 +69 40 30.2016           ~ 1 0
5 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6

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