2019MNRAS.486.5482G

Query : 2019MNRAS.486.5482G

2019MNRAS.486.5482G - Mon. Not. R. Astron. Soc., 486, 5482-5491 (2019/July-2)

On the observed diversity of star formation efficiencies in Giant Molecular Clouds.

GRISDALE K., AGERTZ O., RENAUD F., ROMEO A.B., DEVRIENDT J. and SLYZ A.

Abstract (from CDS):

Observations find a median star formation efficiency per free-fall time in Milky Way Giant Molecular Clouds (GMCs) of the order of ε_ ff_∼1 per cent with dispersions of ∼0.5 dex. The origin of this scatter in εff is still debated and difficult to reproduce with analytical models. We track the formation, evolution and destruction of GMCs in a hydrodynamical simulation of a Milky Way-like galaxy and by deriving cloud properties in an observationally motivated way, we measure the distribution of star formation efficiencies which are in excellent agreement with observations. We find no significant link between εff and any measured global property of GMCs (e.g. gas mass, velocity dispersion). Instead, a wide range of efficiencies exist in the entire parameter space. From the cloud evolutionary tracks, we find that each cloud follows a unique evolutionary path which gives rise to a wide diversity in all properties. We argue that it is this diversity in cloud properties, above everything else, that results in the dispersion of εff.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): ISM: clouds - galaxies: evolution - galaxies: ISM - galaxies: star formation - galaxies:structure

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 2276 AG? 07 27 14.485 +85 45 16.20   12.3       ~ 393 0

Query : 2019MNRAS.486.5482G

Basic data :
NGC 2276 -- Active Galaxy Nucleus Candidate
Other object types: otypes_help 		G (2016A&A,APG,...), MIR (AKARI,WISE), IR (IRAS,PSCz), GiP (KPG), GiG ([CHM2007]), AG? (2020MNRAS), IG (VV), X (CXOU), NIR (2MASS)
ICRS coord. (ep=J2000) : 		07 27 14.485 +85 45 16.20 (Infrared) [ ] C 2006AJ....131.1163S
FK4 coord. (ep=B1950 eq=1950) : 		07 10 24.001 +85 50 54.24 [ ]
Gal coord. (ep=J2000) : 		127.670037 +27.709163 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 2407 [3] / z(~) 0.008062 [0.000010] / cz 2417.00 [3.00]
   D 1999PASP..111..438F
Morphological type: 		Sa-Sc D 2018ApJ...864..123M
Angular size (arcmin): 		1.243 1.069 95 (NIR) C 2006AJ....131.1163S
Fluxes (4) :
B 12.3 [~] E ~
J 10.084 [0.025] C 2006AJ....131.1163S
H 9.463 [0.034] C 2006AJ....131.1163S
K 9.077 [0.039] C 2006AJ....131.1163S
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 8
: 9 		: 21 Display criteria :

Identifiers (25) :
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NGC 2276 IRAS F07104+8550 UGC 3740 Z 363-27
AKARI-IRC-V1 J0727158+854516 KPG 127a UZC J072710.0+854520 [CHM2007] LDC 540 J072714.48+8545162
APG 25 LEDA 21039 VV 1189a [CHM2007] HDC 465 J072714.48+8545162
CGPG 0710.0+8551 2MASS J07271422+8545166 WISE J072714.01+854515.9 [VDD93] 58
CXOU J072713.0+854516 2MASX J07271448+8545162 ZW VII 134
IRAS 07101+8550 MCG+14-04-028 Z 0710.0+8551
IRAS 0710+858P15 PSCz Q07101+8550 Z 362-42

References (393 between 1850 and 2026) (Total 393)
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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Collections of Measurements Description of Measurements

Velocities : 10    Distance : 1   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : NGC 2276

Link by name to the catalogue in VizieR :

NGC 2276 AKARI-IRC-V1 J0727158+854516 APG 25 IRAS 07101+8550 IRAS 0710+858P15
IRAS F07104+8550 KPG 127a 2MASS J07271422+8545166 2MASX J07271448+8545162 UGC 3740
WISE J072714.01+854515.9

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