2011AJ....142...33A


Query : 2011AJ....142...33A

2011AJ....142...33A - Astron. J., 142, 33 (2011/July-0)

Infrared and optical polarimetry around the low-mass star-forming region NGC 1333 IRAS 4A.

ALVES F.O., ACOSTA-PULIDO J.A., GIRART J.M., FRANCO G.A.P. and LOPEZ R.

Abstract (from CDS):

We performed J- and R-band linear polarimetry with the 4.2 m William Herschel Telescope at the Observatorio del Roque de los Muchachos and with the 1.6 m telescope at the Observatório do Pico dos Dias, respectively, to derive the magnetic field geometry of the diffuse molecular cloud surrounding the embedded protostellar system NGC 1333 IRAS 4A. We obtained interstellar polarization data for about three dozen stars. The distribution of polarization position angles has low dispersion and suggests the existence of an ordered magnetic field component at physical scales larger than the protostar. Some of the observed stars present intrinsic polarization and evidence of being young stellar objects. The estimated mean orientation of the interstellar magnetic field as derived from these data is almost perpendicular to the main direction of the magnetic field associated with the dense molecular envelope around IRAS 4A. Since the distribution of the CO emission in NGC 1333 indicates that the diffuse molecular gas has a multi-layered structure, we suggest that the observed polarization position angles are caused by the superposed projection of different magnetic field components along the line of sight.

Abstract Copyright:

Journal keyword(s): ISM: clouds - ISM: individual: NGC 1333 - ISM: magnetic fields - polarization - stars: individual: 2MASS - techniques: polarimetric

Nomenclature: Table 5: [AAG2011] NN (Nos 1-34).

Simbad objects: 43

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Number of rows : 43
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 ASR 2 Y*O 03 29 02.8905446739 +31 16 00.956585602           M2.5V 20 0
2 V* V512 Per Or* 03 29 03.7567945196 +31 16 03.959183877           ~ 364 0
3 NAME HH 7-11 FIR 03 29 03.9 +31 16 06           ~ 339 0
4 ASR 8 Y*O 03 29 04.0654589569 +31 17 07.500180814           M7 16 0
5 2MASS J03290740+3110490 * 03 29 07.4023925028 +31 10 49.086549812           ~ 6 0
6 [AAG2011] 27 * 03 29 09.5780239882 +31 09 08.834991558           ~ 3 0
7 [JCC87] IRAS 4A Y*O 03 29 10.49 +31 13 30.8           ~ 638 1
8 [JCC87] IRAS 4 FIR 03 29 10.9 +31 13 26           ~ 473 0
9 NGC 1333 OpC 03 29 11 +31 18.6           ~ 1279 1
10 [JCC87] IRAS 4B Y*O 03 29 12.058 +31 13 02.05           ~ 573 0
11 2MASS J03291210+3108112 * 03 29 12.10 +31 08 11.2           ~ 2 0
12 [AAG2011] 1 * 03 29 14.5773668911 +31 06 38.109202834           ~ 2 0
13 2MASS J03291488+3109274 * 03 29 14.89 +31 09 27.5           ~ 4 0
14 [AAG2011] 3 * 03 29 15.0387456458 +31 08 06.785454623           ~ 2 0
15 2MASS J03291607+3107309 * 03 29 16.0709117082 +31 07 30.943095271           ~ 1 0
16 2MASS J03291625+3107346 * 03 29 16.2553144506 +31 07 34.668801131           ~ 1 0
17 2MASS J03291667+3116182 Y*O 03 29 16.6744784247 +31 16 18.164503709           M3.5 22 0
18 [AAG2011] 7 * 03 29 17.5193930774 +31 07 33.041142956           ~ 2 0
19 [AAG2011] 29 * 03 29 17.8264866942 +31 05 38.163632456           ~ 2 0
20 2MASS J03291792+3107076 * 03 29 17.9237369792 +31 07 07.553728161           ~ 1 0
21 [AAG2011] 9 * 03 29 18.2120222586 +31 07 55.608595454           ~ 2 0
22 [AAG2011] 10 * 03 29 18.6420222957 +31 09 59.571169768           ~ 3 0
23 [AAG2011] 11 * 03 29 20.0081289227 +31 09 54.276492108           ~ 3 0
24 [AAG2011] 12 * 03 29 20.1002712856 +31 08 53.606047406           ~ 2 0
25 [AAG2011] 30 * 03 29 20.5703851859 +31 06 12.060678209           ~ 2 0
26 EM* LkHA 271 Y*O 03 29 21.8748368520 +31 15 36.245029969   14.0 14.3     K4.0 60 0
27 2MASS J03292353+3107252 * 03 29 23.5448307229 +31 07 25.101826017           ~ 1 0
28 [AAG2011] 15 * 03 29 24.70 +31 04 12.0           ~ 1 0
29 2MASS J03292561+3108425 * 03 29 25.61 +31 08 42.5           ~ 2 0
30 2MASS J03292704+3108046 RG* 03 29 27.0401321128 +31 08 04.596309676           ~ 6 0
31 [AAG2011] 18 * 03 29 27.1573280054 +31 06 48.162825830           ~ 2 0
32 2MASS J03292899+3110003 RG* 03 29 28.9843494250 +31 10 00.351285885           ~ 7 0
33 [AAG2011] 31 * 03 29 29.0794012618 +31 06 09.128450108           ~ 2 0
34 [AAG2011] 20 * 03 29 29.6065383901 +31 08 47.722560099           ~ 3 0
35 [AAG2011] 21 * 03 29 30.80 +31 03 36.0           ~ 1 0
36 [AAG2011] 22 * 03 29 32.4051635742 +31 13 01.139782696           ~ 2 0
37 [AAG2011] 32 PM* 03 29 34.2016166506 +31 07 53.549604299           ~ 2 0
38 2MASS J03293974+3114525 * 03 29 39.7292144801 +31 14 52.647886403           ~ 1 0
39 [AAG2011] 34 * 03 29 40.4454215539 +31 12 46.750414004           ~ 2 0
40 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1154 0
41 BD+52 913 WD* 05 05 30.6182785658 +52 49 51.920797126 10.25 11.44 11.69 11.93 12.108 DA.8 1012 0
42 NAME the Pipe Nebula DNe 17 30 -25.0           ~ 357 1
43 BD+28 4211 HS* 21 51 11.0220905905 +28 51 50.366090892 8.922 10.25 10.58 10.656 10.831 sdO2VIIIHe5 753 0

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2021.09.22-13:32:32

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