2015MNRAS.449..119D

Query : 2015MNRAS.449..119D

2015MNRAS.449..119D - Mon. Not. R. Astron. Soc., 449, 119-128 (2015/May-1)

6.7-GHz methanol maser associated outflows: an evolutionary sequence.

DE VILLIERS H.M., CHRYSOSTOMOU A., THOMPSON M.A., URQUHART J.S., BREEN S.L., BURTON M.G., ELLINGSEN S.P., FULLER G.A., PESTALOZZI M., VORONKOV M.A. and WARD-THOMPSON D.

Abstract (from CDS):

We present a continuing study of a sample 44 molecular outflows, observed in 13CO lines, closely associated with 6.7-GHz methanol masers, hence called methanol maser associated outflows (MMAOs). We compare MMAO properties with those of outflows from other surveys in the literature. In general, MMAOs follow similar trends, but show a deficit in number at low masses and momenta, with a corresponding higher fraction at the high end of the distributions. A similar trend is seen for the dynamical time-scales of MMAOs. We argue that the lack of relatively low mass and young flows in MMAOs is due to the inherent selection-bias in the sample, i.e. its direct association with 6.7-GHz methanol masers. This implies that methanol masers must switch on after the onset of outflows (hence accretion), and not before a sufficient abundance of methanol is liberated from icy dust mantles. Consequently the average dynamical age of MMAOs is older than for the general population of molecular outflows. We propose an adjusted evolutionary sequence of outflow and maser occurrence in the hot core phase, where methanol masers turn on after the onset of the outflow phase.

Journal keyword(s): masers - stars: evolution - stars: formation - stars: massive - stars: protostars - ISM: jets and outflows

Simbad objects: 1

Full paper

View the references in ADS

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	W 43	SFR	18 47 32	-01 56.5						~	604	0

Query : 2015MNRAS.449..119D

Basic data :

W 43 -- Star Forming Region
Other object types:	`Rad (ASB,3C,...)`, `Cl* ([KPS2012])`, `SFR (2013MNRAS)`, `MoC (SRBY)`, `SNR (SNR)`, `PoC ([MSM95])`
ICRS coord. (ep=J2000) :	`18 47 32.4 -01 56 31 (Optical) [ ] E 2013A&A...558A..53K`
FK4 coord. (ep=B1950 eq=1950) :	`18 44 56.4 -01 59 52 [ ]`
Gal coord. (ep=J2000) :	`030.7593 -00.0186 [ ]`
Proper motions mas/yr :	`0.30 -10.12 [0.54 0.54 90] D` `2013A&A...558A..53K`
Radial velocity / Redshift / cz :	`V(km/s) 91.2 [~] / z(~) 0.000304 [~] / cz 91.21 [~] D 1973ApJ...181..781F`
Angular size (arcmin):	`6.3 6.3 90 (Rad) D` `2009ApJ...699.1092H`

Overlay

points in this preview

2MASS DSS

All

(CDSPortal)

Send to

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

An access of full data is available using the icon Vizier near the identifier of the catalogue

`ASB 46`	`GAL 030.8+00.02`	`SNR G030.8-00.0`	`[HC69] 10`
`3C 390.2`	`LMH 35`	`SNR G030.8-00.2`	`[KCW94] 031.280+00.063`
`CTB 59`	`MM 35`	`SRBY 171`	`[KPS2012] MWSC 2993`
`GAL 030.8+00.0`	`NRAO 581`	`W 43`	`[MSM95] G30.79 FIR 6`

References (604 between 1850 and 2026) (Total 604)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

Follow new references on this object

Collections of Measurements

Observing logs

External archives :

Data at NED - NASA/IPAC Extragalactic Database : W 43

Link by name to the catalogue in VizieR :

3C 390.2

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

The annotation server is currently not available. Sorry for any inconvenience

To bookmark this query, right click on this link: simbad:objects in 2015MNRAS.449..119D and select 'bookmark this link' or equivalent in the popup menu