2011ApJ...742....1D


Query : 2011ApJ...742....1D

2011ApJ...742....1D - Astrophys. J., 742, 1 (2011/November-3)

Detection of a bipolar molecular outflow driven by a candidate first hydrostatic core.

DUNHAM M.M., CHEN X., ARCE H.G., BOURKE T.L., SCHNEE S. and ENOCH M.L.

Abstract (from CDS):

We present new 230 GHz Submillimeter Array observations of the candidate first hydrostatic core Per-Bolo 58. We report the detection of a 1.3 mm continuum source and a bipolar molecular outflow, both centered on the position of the candidate first hydrostatic core. The continuum detection has a total flux density of 26.6±4.0 mJy, from which we calculate a total (gas and dust) mass of 0.11±0.05 M☉ and a mean number density of 2.0 ± 1.6x107/cm3. There is some evidence for the existence of an unresolved component in the continuum detection, but longer-baseline observations are required in order to confirm the presence of this component and determine whether its origin lies in a circumstellar disk or in the dense inner envelope. The bipolar molecular outflow is observed along a nearly due east-west axis. The outflow is slow (characteristic velocity of 2.9 km/s), shows a jet-like morphology (opening semi-angles ∼8° for both lobes), and extends to the edges of the primary beam. We calculate the kinematic and dynamic properties of the outflow in the standard manner and compare them to several other protostars and candidate first hydrostatic cores with similarly low luminosities. We discuss the evidence both in support of and against the possibility that Per-Bolo 58 is a first hydrostatic core, and we outline future work needed to further evaluate the evolutionary status of this object.

Abstract Copyright: ∼

Journal keyword(s): ISM: individual: Per-Bolo 58 - ISM: jets and outflows - stars: formation - stars: low-mass

Simbad objects: 12

goto Full paper

goto View the references in ADS

Number of rows : 12
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 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
2 NAME LDN 1451-mm cor 03 25 09.5 +30 23 51           ~ 53 0
3 JCMTSE J032525.9+304502 Y*O 03 25 25.9 +30 45 03           ~ 61 0
4 NGC 1333 OpC 03 29 09.2 +31 20 59           ~ 1575 1
5 SSTc2d J032923.5+313330 Y*O 03 29 23.47 +31 33 29.5           ~ 42 1
6 [EYG2006] Bolo 58 cor 03 29 25.5 +31 28 18           ~ 68 0
7 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1553 0
8 [CAD2012] CB 17 MMS smm 04 04 35.78 +56 56 03.4           ~ 20 0
9 [PCW91] Ced 110 IRS 10 Y*O 11 06 33.38 -77 23 34.6           ~ 79 1
10 SSTc2d J192134.8+112123 Y*O 19 21 34.82 +11 21 23.4           ~ 23 0
11 2MASS J20405664+6723047 Y*O 20 40 56.65 +67 23 04.8           ~ 38 0
12 NAME LDN 1014 IRS Y*O 21 24 07.58 +49 59 08.9           ~ 84 0

To bookmark this query, right click on this link: simbad:objects in 2011ApJ...742....1D and select 'bookmark this link' or equivalent in the popup menu