2004ApJ...616..283T

Query : 2004ApJ...616..283T

2004ApJ...616..283T - Astrophys. J., 616, 283-287 (2004/November-3)

Ambipolar-diffusion timescale, star formation timescale, and the ages of molecular clouds: is there a discrepancy.

TASSIS K. and MOUSCHOVIAS T.C.

Abstract (from CDS):

We reexamine critically the estimates of the duration of different phases of star formation and the lifetimes of molecular clouds based on the ages of T Tauri stars, age spreads of stars in clusters, and statistics of prestellar cores. We show that all available observational data are consistent with lifetimes of molecular clouds comparable to ~107 yr, as well as with the predictions of the theory of self-initiated, ambipolar-diffusion-controlled star formation. We conclude that there exists no observational support for either ``young'' molecular clouds or ``rapid'' star formation.

Abstract Copyright: ∼

Journal keyword(s): Accretion, Accretion Disks - ISM: Dust, Extinction - ISM: Clouds - ISM: Magnetic Fields - Magnetohydrodynamics: MHD - Stars: Formation

Simbad objects: 4

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Number of rows : 4
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 Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
2 NGC 3293 OpC 10 35 50.3 -58 14 04           ~ 327 0
3 NGC 6231 OpC 16 54 14.4 -41 48 53           ~ 562 0
4 M 21 OpC 18 04 10.1 -22 30 00           ~ 157 0

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