2006A&A...454L...5D

Query : 2006A&A...454L...5D

2006A&A...454L...5D - Astronomy and Astrophysics, volume 454L5-8 (2006/7-4)

Astrochemical confirmation of the rapid evolution of massive YSOs and explanation for the inferred ages of hot cores.

DOTY S.D., VAN DISHOECK E.F. and TAN J.C.

Abstract (from CDS):

To understand the roles of infall and protostellar evolution on the envelopes of massive young stellar objects (YSOs). The chemical evolution of gas and dust is traced, including infall and realistic source evolution. The temperatures are determined self-consistently. Both ad/desorption of ices using recent laboratory temperature-programmed-desorption measurements are included. The observed water abundance jump near 100K is reproduced by an evaporation front which moves outward as the luminosity increases. Ion-molecule reactions produce water below 100K. The age of the source is constrained to t∼8±4x104yrs since YSO formation. It is shown that the chemical age-dating of hot cores at ∼fewx103-104yr and the disappearance of hot cores on a timescale of ∼105yr is a natural consequence of infall in a dynamic envelope and protostellar evolution. Dynamical structures of ∼350AU such as disks should contain most of the complex second generation species. The assumed order of desorption kinetics does not affect these results.

Abstract Copyright: ∼

Journal keyword(s): stars: formation - stars: individual: AFGL 2591 - ISM: molecules - molecular processes

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 RAFGL 2591 Y*O 20 29 24.8230 +40 11 19.590           ~ 640 0

Query : 2006A&A...454L...5D

Basic data :
RAFGL 2591 -- Young Stellar Object
Other object types: otypes_help 		Rad (), smm (BLAST,JCMTSE,...), IR (IRAS,RAFGL,...), Mas (2011MNRAS,[RMB2014]), mm (BGPS,[OHJ2020],...), MIR (AKARI,MSX6C,...), Y*O (2014MNRAS), out (2015MNRAS), HII (2011MNRAS), MoC ([HLB98]), NIR (2MASS)
ICRS coord. (ep=J2000) : 		20 29 24.8230 +40 11 19.590 (Radio) [ ] B 2019ApJ...885..131R
FK4 coord. (ep=B1950 eq=1950) : 		20 27 35.9111 +40 01 14.980 [ ]
Gal coord. (ep=J2000) : 		078.8866548 +00.7089337 [ ]
Proper motions mas/yr : 		-1.20 -4.80 [0.72 0.66 90] C 2019ApJ...885..131R
VLSR : 		-6 ~ ~ [7] (Rad) 2019ApJ...885..131R
Parallaxes (mas): 		0.300 [0.024] C 2019ApJ...885..131R
Angular size (arcmin): 		0.51 0.40 113 (mm) D 2010ApJS..188..123R
Fluxes (2) :
H 10.771 [0.042] E 2003yCat.2246....0C
K 6.575 [0.016] C 2003yCat.2246....0C
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Identifiers (25) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

2MASS J20292486+4011194 MSX6C G078.8867+00.7087 [C84c] 3 [SSS2011] BGPS G78.889+0.711
AKARI-IRC-V1 J2029249+401118 NAME AFGL 2591 N3 [ERG2015] 7226 [TCC2003] AFGL 2591 VLA 3
BGPS G078.888+00.709 NAME AFGL 2591 IRS [HLB98] Onsala 135 [TFT95b] Rad 202735.975+400114.709
BLAST J202925+401118 NAME NIRS 1 [MJF2000] A [TGJ91] AFGL 2591 NIRS 1
IRAS 20275+4001 RAFGL 2591 [OHJ2020] NOEMA1
JCMTSE J202924.5+401120 RAFGL 19 [RAB2011b] C1
JCMTSF J202924.5+401120 WISE J202925.03+401120.3 [RMB2014] G078.88+00.70

References (640 between 1850 and 2026) (Total 640)
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 : 1    Distance : 1    Plx : 1    PM : 1    SpT : 1   

   

Observing logs
Herschel : 78    ISO : 25   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : RAFGL 2591

Link by name to the catalogue in VizieR :

2MASS J20292486+4011194 AKARI-IRC-V1 J2029249+401118 IRAS 20275+4001 MSX6C G078.8867+00.7087 RAFGL 2591
RAFGL 19 WISE J202925.03+401120.3

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