2002A&A...389..572R


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST22:00:27

2002A&A...389..572R - Astronomy and Astrophysics, volume 389, 572-576 (2002/7-2)

VLA observations of water maser emission associated with SVS 13 and other sources in NGC 1333.

RODRIGUEZ L.F., ANGLADA G., TORRELLES J.M., MENDOZA-TORRES J.E., HASCHICK A.D. and HO P.T.P.

Abstract (from CDS):

The young stellar object SVS 13 is believed to power the chain formed by the HH 7-11 objects. Recent observations have revealed that in the radio continuum (3.6-cm) the source is a binary with components separated by about 0.3" in the east-west direction. The members of the binary are named VLA 4A (western component) and VLA 4B (eastern component). In an attempt to ascertain which of the two components of the binary is the most likely candidate to drive the outflow, we obtained accurate positions for the H2O maser spots toward this source, also known as H2O(A), derived from Very Large Array observations in its highest angular resolution A configuration. We detected a total of eleven spots over four observational sessions (made in the years 1983, 1985, 1988, and 1989). The spots are segregated in two velocity groups: a velocity group with vLSR similar to that of the ambient cloud (vLSR ≃8km/s), for which we detected five features (with vLSR in the range of 6.5 to 12.2km/s) and a blueshifted velocity group (six features with vLSR in the range of -25.4 to -5.6km/s). Remarkably, all the spots in the first velocity group are associated with VLA 4A, while all the spots in the blueshifted velocity group are associated with VLA 4B. We discuss the possible implications of this observation. We also present accurate positions of the H2O maser HH 7(B) and of the masers associated with IRAS4B (VLA 28) and IRAS7 (VLA 27, the exciting source of HH 6).

Abstract Copyright:

Journal keyword(s): ISM: Herbig-Haro objects - ISM: jets and outflows - masers - stars: pre-main sequence

Simbad objects: 14

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Number of rows : 14

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 [RAC97] VLA 2a Rad 03 27 58.63 +30 54 58.8           ~ 2 0
2 [RAC97] VLA 2b Rad 03 27 58.64 +30 55 00.3           ~ 2 0
3 NAME HH 7-11 MMS 3 smm 03 29 01.964 +31 15 38.04           ~ 50 0
4 [RAC97] VLA 3 smm 03 29 03.372 +31 16 01.60           ~ 29 0
5 NAME NGC 1333 H2O Maser Mas 03 29 03.7 +31 16 03           ~ 9 0
6 [RAC97] VLA 4a Rad 03 29 03.715 +31 16 04.14           ~ 17 0
7 [RAC97] VLA 4b Rad 03 29 03.740 +31 16 04.15           ~ 19 0
8 V* V512 Per Or* 03 29 03.7567945196 +31 16 03.959183877           ~ 348 0
9 NAME HH 7-11 FIR 03 29 03.9 +31 16 06           ~ 332 0
10 HH 6 HH 03 29 11.2 +31 18 34           ~ 62 0
11 NGC 1333 OpC 03 29 11 +31 18.6           ~ 1219 1
12 [KJD2006] SMM J032917+31184 Y*O 03 29 11.3 +31 18 25           ~ 52 0
13 NAME HH 7-11(C) Mas 03 29 11.4 +31 13 18           ~ 13 0
14 [JCC87] IRAS 4B Y*O 03 29 12.058 +31 13 02.05           ~ 553 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-22:00:27

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