2017AJ....153..209R


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.06CET01:23:49

2017AJ....153..209R - Astron. J., 153, 209-209 (2017/May-0)

JVLA observations of young brown dwarfs.

RODRIGUEZ L.F., ZAPATA L.A. and PALAU A.

Abstract (from CDS):

We present sensitive 3.0 cm JVLA radio continuum observations of six regions of low-mass star formation that include twelve young brown dwarfs (BDs) and four young BD candidates. We detect a total of 49 compact radio sources in the fields observed, of which 24 have no reported counterparts and are considered new detections. Twelve of the radio sources show variability in timescales of weeks to months, suggesting gyrosynchrotron emission produced in active magnetospheres. Only one of the target BDs, FU Tau A, was detected. However, we detected radio emission associated with two of the BD candidates, WL 20S and CHLT 2. The radio flux densities of the sources associated with these BD candidates are more than an order of magnitude larger than expected for a BD and suggest a revision of their classification. In contrast, FU Tau A falls on the well-known correlation between radio luminosity and bolometric luminosity, suggesting that the emission comes from a thermal jet and that this BD seems to be forming as a scaled-down version of low-mass stars.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): ISM: jets and outflows - radio continuum: stars - stars: formation - stars: individual: FU Tau - stars: pre-main sequence - stars: pre-main sequence

Nomenclature: Table 2: [RZP2017] JHHMMSS.ss+DDMMSS.s N=50.

Simbad objects: 74

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Number of rows : 74

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 3C 48 QSO 01 37 41.2995845985 +33 09 35.079126038   16.62 16.20     ~ 2566 2
2 [PZR2014b] IC 348-SMM2E Y*O 03 43 57.73 +32 03 10.1           ~ 22 0
3 QSO B0400+258 QSO 04 03 05.58606763 +26 00 01.5028075     18 19.00   ~ 185 1
4 HD 283447 Or* 04 14 12.9232870093 +28 12 12.378540314 13.17 12.07 10.68 9.45 8.67 K3Ve 386 0
5 [RZP2017] J042327.62+250608.8 Rad 04 23 27.62 +25 06 08.8           ~ 1 0
6 [RZP2017] J042328.87+250240.0 Rad 04 23 28.87 +25 02 40.0           ~ 1 0
7 [RZP2017] J042331.84+250208.1 Rad 04 23 31.84 +25 02 08.1           ~ 1 0
8 V* FU Tau Or* 04 23 35.3912144972 +25 03 02.741853087           M7.25 58 0
9 V* FU Tau B BD* 04 23 35.73792 +25 02 59.6328       22.16 19.11 L0.3 32 0
10 [RZP2017] J042335.88+250434.3 Rad 04 23 35.88 +25 04 34.3           ~ 1 0
11 [RZP2017] J042336.09+250427.7 Rad 04 23 36.09 +25 04 27.7           ~ 1 0
12 [RZP2017] J042336.57+250052.8 Rad 04 23 36.57 +25 00 52.8           ~ 1 0
13 [RZP2017] J042339.62+250430.4 Rad 04 23 39.62 +25 04 30.4           ~ 1 0
14 [RZP2017] J042340.75+250410.6 Rad 04 23 40.75 +25 04 10.6           ~ 1 0
15 [RZP2017] J042341.44+250425.3 Rad 04 23 41.44 +25 04 25.3           ~ 1 0
16 [RZP2017] J042348.81+250526.8 Rad 04 23 48.81 +25 05 26.8           ~ 1 0
17 [RZP2017] J043205.71+181302.5 Rad 04 32 05.71 +18 13 02.5           ~ 1 0
18 2MASS J04321606+1812464 TT* 04 32 16.0655428266 +18 12 46.383508261   19.20 17.595     M6.5 74 0
19 [RZP2017] J043217.24+181425.2 Rad 04 32 17.24 +18 14 25.2           ~ 1 0
20 [RZP2017] J043217.45+181422.0 Rad 04 32 17.45 +18 14 22.0           ~ 1 0
21 [RZP2017] J043217.64+181006.9 Rad 04 32 17.64 +18 10 06.9           ~ 1 0
22 2MASS J04322946+1814002 Y*O 04 32 29.4619553839 +18 14 00.196497278           ~ 13 1
23 V* HP Tau Or* 04 35 52.7821592361 +22 54 23.158368128 17.39 14.9 14.90     K2-5e 196 1
24 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3650 0
25 2MASS J05351294-0502086 LM* 05 35 12.9503221177 -05 02 08.769312491         17.393 M6.5 4 0
26 V* V2282 Ori Or* 05 35 16.15536 -05 00 02.5848           ~ 20 0
27 [TKT2002b] IRS 3 IR 05 35 18.275 -05 00 33.93           ~ 3 1
28 V* V1733 Ori Or* 05 35 20.7615750178 -04 58 34.207122165         14.27 K8 13 0
29 [RZP2017] J053522.05-050047.8 Rad 05 35 22.05 -05 00 47.8           ~ 1 0
30 [TSO2008] 13 Y*O 05 35 22.4451 -05 01 14.123           ~ 45 1
31 [THT2009] MMS 6-main mm 05 35 23.420 -05 01 30.54           ~ 5 0
32 [TSO2008] 14 mm 05 35 23.420 -05 01 30.35           ~ 59 0
33 [MGM2012] 2433 Y*O 05 35 23.500 -05 01 29.58           ~ 8 0
34 [THT2009] IRS 3 Y*O 05 35 23.50 -05 01 29.0           ~ 3 0
35 TKK 755 LM* 05 35 23.82 -04 59 24.9           M7.75 3 0
36 2MASS J05352431-0501204 Y*O 05 35 24.32 -05 01 20.5           ~ 7 0
37 IRAS 05329-0505 Y*O 05 35 26.746 -05 03 55.08           ~ 72 0
38 TKK 870 Y*O 05 35 28.19 -05 03 41.2           ~ 34 0
39 HOPS 383 Y*O 05 35 29.8407 -04 59 51.006           ~ 44 0
40 [RZP2017] J053530.11-050328.5 Rad 05 35 30.11 -05 03 28.5           ~ 1 0
41 GBS-VLA J053537.21-050055.2 Rad 05 35 37.21 -05 00 55.2           ~ 3 0
42 QSO B0539-057 QSO 05 41 38.08338 -05 41 49.4284     20.4 20.70   ~ 219 2
43 ICRF J054236.1+495107 Sy1 05 42 36.13789843 +49 51 07.2337251   18.45 17.80 17.210   ~ 1301 1
44 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3843 2
45 QSO B1622-253 QSO 16 25 46.89164010 -25 27 38.3267989   21.3 20.6 19.60   ~ 313 1
46 [GY92] 3 Y*O 16 26 21.9083577172 -24 44 39.720788042       17.95 15.62 M6.5 48 0
47 DoAr 25 TT* 16 26 23.6911216715 -24 43 13.886717283       12.65   K5 133 0
48 [RZP2017] J162624.45-244524.8 Rad 16 26 24.45 -24 45 24.8           ~ 1 0
49 [RZP2017] J162624.92-244334.2 Rad 16 26 24.92 -24 43 34.2           ~ 1 0
50 GBS-VLA J162657.84-244201.6 Rad 16 26 57.84 -24 42 01.6           ~ 2 0
51 [RZP2017] J162702.15-243844.6 Rad 16 27 02.15 -24 38 44.6           ~ 1 0
52 [RZP2017] J162702.72-243900.1 Rad 16 27 02.72 -24 39 00.1           ~ 1 0
53 [GY92] 193 Y*O 16 27 04.5152139620 -24 42 59.673480203       16.69 14.97 K6-M1 29 0
54 [GY92] 204 TT* 16 27 06.5924723987 -24 41 48.883697790       17.57 15.43 M5 85 0
55 WLY 1-43 Y*O 16 27 11.17992 -24 40 46.6680           ~ 56 0
56 GBS-VLA J162714.71-243919.7 Rad 16 27 14.71 -24 39 19.7           ~ 4 0
57 NAME WL 20S BD? 16 27 15.69 -24 38 45.7           ~ 13 0
58 WL 20 Y*O 16 27 15.69840 -24 38 43.4364           ~ 78 0
59 NAME WL 20E Y*O 16 27 15.87648 -24 38 43.3896           ~ 71 0
60 EM* SR 12 Or* 16 27 19.5054789229 -24 41 40.414828505     13.28 12.15 10.855 M0IVe 168 1
61 NAME SR 12C LM* 16 27 19.66704 -24 41 48.8292           M9.0 32 0
62 [B87] 1 Rad 19 01 18.2 -37 00 03           ~ 5 0
63 [RZP2017] J190118.82-370253.5 Rad 19 01 18.82 -37 02 53.5           ~ 1 0
64 [RZP2017] J190123.30-370215.5 Rad 19 01 23.30 -37 02 15.5           ~ 1 0
65 [RZP2017] J190126.44-365922.2 Rad 19 01 26.44 -36 59 22.2           ~ 1 0
66 2MASS J19012717-3659085 TT* 19 01 27.1761993631 -36 59 08.597306054   18.3 16.9     M 15 0
67 2MASS J19013357-3700304 Y*O 19 01 33.5769494372 -37 00 30.475478822           M6.5 44 0
68 [RZP2017] J190134.57-370302.9 Rad 19 01 34.57 -37 03 02.9           ~ 1 0
69 V* V709 CrA Or* 19 01 34.8590599569 -37 00 56.581106047   12.70 11.03     K1IV 59 0
70 [TS84] IRS 2 Y*O 19 01 41.569 -36 58 31.23           K2 78 0
71 CHLT 2 BD? 19 01 43.3 -36 59 12           ~ 9 0
72 [RZP2017] J190144.36-370154.7 Rad 19 01 44.36 -37 01 54.7           ~ 1 0
73 NAME CrA Dark Cloud MoC 19 01 51 -36 58.9           ~ 412 0
74 QSO B1921-293 BLL 19 24 51.05595514 -29 14 30.1210524   18.71 18.21 15.07   ~ 712 0

    Equat.    Gal    SGal    Ecl

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2021.03.06-01:23:49

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