2001A&A...376..907P


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.24CET19:25:30

2001A&A...376..907P - Astronomy and Astrophysics, volume 376, 907-916 (2001/9-4)

Sub-arcsec resolution near-infrared images of the Cederblad 110 region.

PERSI P., MARENZI A.R., GOMEZ M. and OLOFSSON G.

Abstract (from CDS):

We present the results of deep (Ks=18.9) sub-arcsec resolution (0.3") imaging observations of the Cederblad 110 region in the Chamaeleon I dark cloud. This region (roughly 5'x5') is characterized by the presence of six ISOCAM-detected young stellar objects (YSOs). Our images have recovered all these sources at near-infrared (near-IR) wavelengths. Ced 110 IRS4, the brightest object in the region, is associated with a remarkable near-IR bipolar nebulosity. Ced 110 IRS6 is resolved in a double system IRS6a and IRS6b with a separation of ∼2''(∼320AU at the distance of the Cha I cloud). We have combined 1.3 mm, far and mid-IR fluxes from the literature with our JHK data and obtained the spectral energy distributions (SEDs) for three (IRS4, IRS6a and ISO-ChaI86) of the six ISOCAM sources in the region. We modelled the SEDs of IRS6a and ISO-ChaI86 with a spherically symmetric dusty envelope, using the DUSTY code. These objects are clear Class I sources of the cloud. Finally, we report the detection of three new objects in this region (NIR 72, 84 and 89) with significant near-IR excess. If these sources are associated with the cloud, the derived luminosities and masses suggest that they are candidate young brown dwarfs of Chamaeleon I.

Abstract Copyright:

Journal keyword(s): stars: formation - stars: low-mass, brown dwarfs - stars: pre-main sequence - infrared: stars

VizieR on-line data: <Available at CDS (J/A+A/376/907): catalog.dat>

Nomenclature: Table 1: [PMG2001] NIR NNN (Nos 1-165). Fig.5, Table 1: [PCW91] Ced 110 IRS NNA (Nos 6A, 6B) added.

CDS comments: in ref list Hayakawa 1999PASJ...51..919H instead of PASP

Simbad objects: 40

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Number of rows : 40

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 HH 50 HH 11 05 49.6 -77 33 10           ~ 31 0
2 HH 49 HH 11 06 00.05 -77 33 36.0           ~ 34 0
3 [PMG2001] NIR 9 IR 11 06 09.2556814352 -77 22 05.434303278           ~ 1 0
4 2MASS J11061110-7722023 IR 11 06 11.11 -77 22 02.4           ~ 1 0
5 [PMG2001] NIR 16 IR 11 06 13.60 -77 23 27.2           ~ 2 0
6 Ass Cha T 2-21 TT* 11 06 15.3485848381 -77 21 56.737939872   12.58 11.01   9.35 G5Ve 125 0
7 [PMG2001] NIR 35 IR 11 06 23.94 -77 23 03.0           ~ 2 0
8 2MASS J11062475-7721057 IR 11 06 24.75 -77 21 05.7           ~ 1 0
9 [PCW91] Ced 110 IRS 10 Y*O 11 06 33.38 -77 23 34.6           ~ 60 1
10 2MASS J11063838-7721060 IR 11 06 38.39 -77 21 06.1           ~ 1 0
11 IRAS 11051-7706 Y*O 11 06 46.025 -77 22 29.67           ~ 71 0
12 [PMG2001] NIR 72 IR 11 06 46.453 -77 22 37.11           ~ 3 0
13 2MASS J11064647-7722099 IR 11 06 46.48 -77 22 10.0           ~ 1 0
14 [PMG2001] NIR 76 Y*? 11 06 46.580 -77 22 32.56           ~ 55 0
15 [PMG2001] NIR 74 IR 11 06 46.98 -77 22 38.3           ~ 2 0
16 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1009 1
17 [PMG2001] NIR 80 IR 11 06 48.01 -77 22 43.9           ~ 2 0
18 [PMG2001] NIR 84 IR 11 06 51.09 -77 20 07.1           ~ 2 0
19 2MASS J11065268-7721130 IR 11 06 52.69 -77 21 13.1           ~ 1 0
20 [PMG2001] NIR 89 Y*O 11 06 53.80 -77 23 59.9           ~ 6 0
21 2MASS J11065505-7724266 IR 11 06 55.05 -77 24 26.7           ~ 1 0
22 [PMG2001] NIR 93 IR 11 06 56.64 -77 22 05.5           ~ 2 0
23 [PCW91] Ced 110 IRS 11 Y*O 11 06 58.030 -77 22 48.87           ~ 19 0
24 [PMG2001] NIR 96 IR 11 06 58.15 -77 21 55.3           ~ 2 0
25 [PMG2001] NIR 101 IR 11 07 00.74 -77 22 11.1           ~ 2 0
26 [PMG2001] NIR 103 IR 11 07 01.93 -77 22 04.2           ~ 2 0
27 IRAS 11057-7706 Y*O 11 07 09.19896 -77 23 04.9920           ~ 59 0
28 [PCW91] Ced 110 IRS 6A IR 11 07 09.91 -77 23 06.3           ~ 6 0
29 [PCW91] Ced 110 IRS 6B IR 11 07 10.62 -77 23 06.7           ~ 1 0
30 [PMG2001] NIR 126 IR 11 07 14.14 -77 24 24.3           ~ 2 0
31 [PMG2001] NIR 129 IR 11 07 15.62 -77 24 44.2           ~ 2 0
32 V* GZ Cha Or* 11 07 16.22784 -77 23 06.8316           M1 25 0
33 [PMG2001] NIR 130 IR 11 07 16.85 -77 24 27.3           ~ 2 0
34 [PMG2001] NIR 134 IR 11 07 18.56 -77 23 19.4           ~ 2 0
35 [PMG2001] NIR 135 IR 11 07 19.36 -77 23 06.6           ~ 2 0
36 [PMG2001] NIR 136 IR 11 07 20.28 -77 24 35.6           ~ 2 0
37 [PMG2001] NIR 137 IR 11 07 20.72 -77 22 08.9           ~ 2 0
38 [CCE98] 2-24 Y*O 11 07 21.426 -77 22 11.76           M2 33 0
39 [PMG2001] NIR 140 IR 11 07 21.62 -77 22 16.4           ~ 2 0
40 [PMG2001] NIR 142 IR 11 07 22.04 -77 23 24.7           ~ 2 0

    Equat.    Gal    SGal    Ecl

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2021.02.24-19:25:30

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