2011MNRAS.416.2341K

Query : 2011MNRAS.416.2341K

2011MNRAS.416.2341K - Mon. Not. R. Astron. Soc., 416, 2341-2358 (2011/September-3)

Confirmation of the VeLLO L1148-IRS: star formation at very low (column) density.

KAUFFMANN J., BERTOLDI F., BOURKE T.L., MYERS P.C., LEE C.W. and HUARD T.L.

Abstract (from CDS):

We report the detection of a compact (∼5 arcsec; about 1800 au projected size) CO outflow from L1148-IRS. This confirms that this Spitzer source is physically associated with the nearby ( ≈ 325 pc) L1148 dense core. Radiative transfer modelling suggests an internal luminosity of 0.08 to 0.13 L☉. This validates L1148-IRS as a Very Low Luminosity Object (VeLLO; L ≤ 0.1 L☉). The L1148 dense core has unusually low densities and column densities for a star-forming core. It is difficult to understand how L1148-IRS might have formed under these conditions. Independent of the exact final mass of this VeLLO (which is likely <0.24 M☉), L1148-IRS and similar VeLLOs might hold some clues about the isolated formation of brown dwarfs.

Based on observations with the IRAM 30-m telescope and the IRAM Plateau de Bure Interferometer.


Abstract Copyright: 2011 California Institute of Technology. Government sponsorship acknowledged. Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): brown dwarfs - stars: formation - stars: low-mass - ISM: individual objects: L1148 - ISM: jets and outflows - infrared: stars

Simbad objects: 31

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Number of rows : 31
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 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
2 LDN 1457 DNe 02 55.9 +19 35           ~ 85 1
3 SSTB213 J041757.77+274105.0 BD? 04 17 57.77 +27 41 05.0           ~ 9 1
4 IRAS 04191+1523 Y*O 04 22 00.43944 +15 30 21.2148           ~ 206 0
5 V* FU Tau Or* 04 23 35.3912162592 +25 03 02.745522180           M7.25 88 0
6 WISE J042838.78+265134.6 Y*O 04 28 38.78544 +26 51 34.6824           ~ 48 0
7 LDN 1521F DNe 04 28 39.3 +26 51 43           ~ 224 1
8 Bad 16 Or* 04 30 50.2774891944 +23 00 08.757461592       14.95   F1 147 0
9 NAME Per B SyG 04 37 04.37535450 +29 40 13.8179631   21.7       ~ 533 2
10 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
11 IRAS 04376+5413 NIR 04 41 37.5 +54 19 22           ~ 12 0
12 ICRF J054236.1+495107 Sy1 05 42 36.13789710 +49 51 07.2337139   18.45 17.80 17.210   ~ 1573 1
13 [PCW91] Ced 110 IRS 10 Y*O 11 06 33.38 -77 23 34.6           ~ 79 1
14 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
15 IRAS 16059-3857 Y*O 16 09 18.07 -39 04 53.4           ~ 57 0
16 [PB95] Oph B 11 PoC 16 24 12.9 -24 26 06           ~ 19 0
17 [GY92] 204 TT* 16 27 06.5924837856 -24 41 48.871282992       17.57 15.43 M5 113 0
18 NAME L328 IRS Y*? 18 16 59.50 -18 02 30.5           ~ 29 0
19 LDN 328 DNe 18 17 00 -18 01.9           ~ 52 0
20 SSTc2d J192134.8+112123 Y*O 19 21 34.82 +11 21 23.4           ~ 23 0
21 [LM99] L673-7 cor 19 21 35.5 +11 21 14           ~ 32 0
22 4C 73.18 BLL 19 27 48.4947009120 +73 58 01.572558816     16.06 15.11   ~ 562 2
23 EM* MWC 349 ** 20 32 45.499080 +40 39 36.74124   15.88 13.15 12.13   Bep 837 0
24 3C 418.0 Bla 20 38 37.03472279 +51 19 12.6624988   21.30 21.00 18.9   ~ 333 1
25 LDN 1148 DNe 20 40 31.6 +67 21 45           ~ 68 0
26 2MASS J20405664+6723047 Y*O 20 40 56.65 +67 23 04.8           ~ 38 0
27 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2541 1
28 LDN 1014 cor 21 24 05.9 +49 59 07           ~ 94 0
29 NAME LDN 1014 IRS Y*O 21 24 07.58 +49 59 08.9           ~ 84 0
30 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 3004 2
31 NAME Cepheus Flare MoC 23 34 +72.0           ~ 142 0

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