2001AJ....121.1030H

Query : 2001AJ....121.1030H

2001AJ....121.1030H - Astron. J., 121, 1030-1039 (2001/February-0)

On age spreads in star-forming regions.

HARTMANN L.

Abstract (from CDS):

I consider current observational constraints on age spreads in star-forming regions and recent attempts to infer the star-forming histories of molecular cloud complexes. My analysis concentrates on low-mass pre-main-sequence stars on Hayashi tracks, which constitute the bulk of the stellar population. Current observational and theoretical uncertainties probably preclude any robust inferences of the detailed variation of star formation rates as a function of time. These results do not change the conclusion, supported again recently by the systematic study of Palla & Stahler, that star formation is rapid.

Abstract Copyright: ∼

Journal keyword(s): Stars: Circumstellar Matter - Stars: Formation - Stars: Pre-Main-Sequence

CDS comments: Par. 3 : pair Aa - Ab = [RRN96] GG Tau A and [RRN96] GG Tau a

Simbad objects: 10

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Number of rows : 10
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 IC 348 OpC 03 44 31.1 +32 10 02           ~ 1476 1
2 WK81 1 TT* 04 19 26.2675117776 +28 26 14.259575472   14.81 13.04 12.240   K7 249 1
3 V* GG Tau Or* 04 32 30.3506925552 +17 31 40.494063144 14.84 14.78 13.40 11.54   M0e+M2.0e 793 1
4 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
5 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2514 0
6 NAME Ori I As* 05 38 -02.8           ~ 653 0
7 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
8 NAME TW Hya Association As* 11 01.9 -34 42           ~ 1018 0
9 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
10 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1

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