CDS

2000A&A...357..219P

Query : 2000A&A...357..219P

2000A&A...357..219P - Astronomy and Astrophysics, volume 357, 219-224 (2000/5-1)

ISOCAM observations of the Chamaeleon I dark cloud.

PERSI P., MARENZI A.R., OLOFSSON G., KAAS A.A., NORDH L., HULDTGREN M., ABERGEL A., ANDRE P., BONTEMPS S., BOULANGER F., BURGDORF M., CASALI M.M., CESARSKY C.J., COPET E., DAVIES J., FALGARONE E., MONTMERLE T., PERAULT M., PRUSTI T., PUGET J.L. and SIBILLE F.

Abstract (from CDS):

We present the results of an ISOCAM survey of the Chamaeleon I dark cloud conducted in two broad-band filters at 6.7 and 14.3µm. In an area of 0.59deg2. we have detected a total of 282 mid-IR sources with 103 sources observed in both filters. Combining the ISOCAM observations with the I, J, and Ks data obtained with DENIS, we have found 108 pre-main-sequence (PMS) stars in the region, of which 34 were previously unidentified. Several of these newly discovered young stellar objects are relatively faint suggesting a population in Cha I of very low mass objects that probably includes brown dwarfs in their early contraction phases. Finally, most of the PMS stars show the spectral index computed between 2.2 and 14.3µm typical of Class II sources. The luminosity function (LF) derived for our detected PMS stars is discussed.

Abstract Copyright: ∼

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

VizieR on-line data: <Available at CDS (J/A+A/357/219): table1 table2 table3 table4 tables.tex>

Nomenclature: Tables 1-4: ISO-ChaI NNN N=105 among (Nos 1-282).

Simbad objects: 112

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Number of rows : 112
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023 		#notes
1 ISO-ChaI 1 * 11 02 16.1880355512 -77 46 33.111456960           F 6 0
2 V* CS Cha Or* 11 02 24.8763629208 -77 33 35.667131796   12.88 11.69   10.123 K2Ve 219 0
3 Hn 1 Y*O 11 02 32.6050296696 -77 29 13.031436624         13.10 M3+M5 42 0
4 Ass Cha T 1-8 TT* 11 02 55.0255671144 -77 21 50.814186624     16.25 15.17 13.40 M4.5e 56 0
5 ISO-ChaI 13 NIR 11 02 55.792 -77 24 30.41         18.09 ~ 6 0
6 Glass C TT* 11 03 11.5657030464 -77 21 04.321403100   12.59 11.48     G2V 29 0
7 ISO-ChaI 28 Y*O 11 03 41.8505636736 -77 26 52.113622920           M5.5e 18 0
8 V* GR Cha Or* 11 03 47.6427402312 -77 19 56.417579004         13.91 M5e 25 0
9 Hn 3 Y*O 11 03 56.8213107528 -77 21 32.974510752   17.05 15.44 15.03 12.57 M4IIIe 31 0
10 IRAS 11030-7702 TT* 11 04 22.7159038128 -77 18 08.299910700     17.89     K6/M0e 47 0
11 HH 48 HH 11 04 22.8 -77 18 08           ~ 41 0
12 Ass Cha T 1-10 Y*O 11 04 24.2478355560 -77 25 48.795988044   17.73 16.11     ~ 21 0
13 BYB 18 Y*O 11 04 42.5993270304 -77 41 57.167040408         13.63 M4.5e 56 0
14 Sz 13 Or* 11 04 57.0089116656 -77 15 57.049656948     18.91 16.65 14.68 M3e 42 0
15 CHXR 15 Y*O 11 05 42.8800288464 -77 26 51.567587304         13.51 M5+M5 33 0
16 CHSM 6314 * 11 05 53.9990769120 -77 43 27.167370528           ~ 4 0
17 CHSM 6738 * 11 06 04.0662917232 -77 39 23.793517512           ~ 4 0
18 Ass Cha T 2-21 TT* 11 06 15.3471261840 -77 21 56.720362608   12.58 11.01   9.35 G5Ve 130 0
19 CHXR 73 Y*O 11 06 28.7641341696 -77 37 33.140151012         15.78 M3e 48 1
20 ISO-ChaI 79 Y*O 11 06 39.4531299120 -77 36 05.253418332         17.83 M5e 26 0
21 Ass Cha T 2-22 Y*O 11 06 43.4642963688 -77 26 34.426398552         13.02 M3e 36 0
22 V* UX Cha Or* 11 06 45.0944158128 -77 27 02.383275420     14.78   12.07 K5Ve 58 0
23 IRAS 11051-7706 Y*O 11 06 46.025 -77 22 29.67           ~ 79 0
24 [PMG2001] NIR 76 Y*? 11 06 46.580 -77 22 32.56           ~ 55 0
25 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1099 1
26 CHXR 74 TT* 11 06 57.3114166800 -77 42 10.639632780         13.66 M3Ve 44 0
27 [PCW91] Ced 110 IRS 11 Y*O 11 06 58.030 -77 22 48.87           ~ 19 0
28 V* UY Cha Or* 11 06 59.0257686696 -77 18 53.404488720         12.97 M4Ve 61 0
29 IRAS 11057-7706 Y*O 11 07 09.19896 -77 23 04.9920           ~ 60 0
30 [CCE98] 2-21 Y*O 11 07 09.25152 -77 18 47.1420           M2.5 24 0
31 Hn 6 Y*O 11 07 11.4551582832 -77 46 39.344493324         13.31 M3e 37 0
32 CHXR 22 X 11 07 13.4 -77 43 47           ~ 4 0
33 V* GZ Cha Or* 11 07 16.22784 -77 23 06.8316           M1 26 0
34 [NC98] Cha HA 1 Y*O 11 07 16.6710048312 -77 35 53.212777692   22.8 21.0   16.38 M7.5/8e 84 0
35 [NC98] Cha HA 9 Y*? 11 07 18.5760916584 -77 32 51.561674700     23.1   17.57 M5.5e 50 0
36 V* DI Cha Or* 11 07 20.7276076008 -77 38 07.308086352   12.02 10.74 10.72   G2Ve 163 0
37 [CCE98] 2-24 Y*O 11 07 21.426 -77 22 11.76           M2 33 0
38 CHXR 25 Y*O 11 07 33.0013716528 -77 28 27.640402860   17.57 15.99 16.00 13.16 M3.5Ve 13 0
39 CHXR 76 Or* 11 07 35.1774430800 -77 34 49.286652024   20.04 18.15   14.39 M4e 45 0
40 CHXR 26 Y*O 11 07 36.869 -77 33 33.52         15.18 M3.5e 26 0
41 V* HK Cha Or* 11 07 42.3364909752 -77 33 59.394350844   21.9 19.8   15.26 ~ 78 0
42 Ass Cha T 1-15 Or* 11 07 43.6610412264 -77 39 41.134236408   17.05 15.34   12.67 K5Ve 71 0
43 CHSM 11070 * 11 07 51.1512976200 -77 10 00.013722636           ~ 3 0
44 V* HL Cha Or* 11 07 52.2574621728 -77 36 57.037742172   21.5 19.51   15.07 ~ 47 0
45 RX J1108.2-7728 Y*O 11 07 55.775088 -77 27 25.52724   15.26 13.40 13.07 11.04 K3Ve 55 0
46 Ass Cha T 1-16 Or* 11 07 57.9428053584 -77 38 44.977882344   15.1 14.2   13.04 K4-7 68 0
47 Sz 23 Or* 11 07 58.0951794888 -77 42 41.352365124   15.8 18.04   14.63 M4Ve 63 0
48 CHXR 30 X 11 08 00.3 -77 17 32           ~ 9 0
49 V* VW Cha Or* 11 08 01.502064 -77 42 28.87524 13.91 14.165 12.761 12.653 10.69 K7+M0 179 0
50 ESO-HA 562 Or* 11 08 02.8789169712 -77 38 42.580139640     17.61   14.41 M0.5+M0.5 45 0
51 HD 97048 Ae* 11 08 03.3109731720 -77 39 17.490777444 9.03 8.76 9.00   8.64 A0Vep 521 0
52 BRAN 341B RNe 11 08 03.4 -77 39 19           ~ 27 0
53 V* HP Cha TT* 11 08 15.216432 -77 33 53.17020   14.33 12.77 12.11   K3+G5e 105 0
54 V* HP Cha A * 11 08 15.4974157248 -77 33 53.446498956           K6e 83 0
55 Ass Cha T 1-19 Y*O 11 08 16.4948745984 -77 44 37.199315580   18.40 16.53   13.12 M4Ve 51 0
56 ISO-ChaI 138 LM* 11 08 18.4691867664 -77 30 40.891618332         16.77 ~ 38 0
57 ISO-ChaI 143 Y*? 11 08 22.3647237024 -77 30 27.783619596         15.51 M5e 43 0
58 ISO-ChaI 144 Em* 11 08 24.1193575992 -77 41 47.438803392   21.3 19.18   14.85 ~ 48 0
59 CHSM 12496 * 11 08 25.7863253832 -76 55 56.863821900           K1.5 3 0
60 ISO-ChaI 147 Y*? 11 08 26.4697073400 -77 15 55.074237156         16.81 M5.75 25 0
61 NAME Cha IR Nebula TT* 11 08 38.702 -77 43 51.54           M5.5 72 0
62 Ass Cha T 1-20 Or* 11 08 39.0261275112 -77 16 04.163889324   18.44 16.28 15.822 13.17 K5Ve 81 0
63 V* HQ Cha Or* 11 08 39.5017287912 -77 34 16.733892756   21.7 19.75   15.06 ~ 65 0
64 HJM C 1-10 Y*O 11 08 40.6993664280 -76 36 07.845356304   17.34 15.50 14.96 12.60 K8Ve 23 0
65 CHSM 13217 * 11 08 43.0329211512 -76 27 46.821492684           ~ 5 0
66 Sz 28 Y*O 11 08 50.9098459272 -76 25 13.681141392   16.4     14.60 M4Ve 36 0
67 V* HR Cha Or* 11 08 54.1972860288 -77 32 11.656356468     19.1   15.01 M5.25e 37 0
68 CHXR 78 X 11 08 54.2 -77 32 11           ~ 5 0
69 V* VY Cha Or* 11 08 54.6059374368 -77 02 13.006464720   14.8     13.60 K8Ve 68 0
70 CHSM 13713 * 11 08 54.7449966120 -76 39 41.589779436           G5.7 3 0
71 V* HS Cha Or* 11 08 54.9599362056 -76 32 41.148693636     20.12 18.616 16.650 M5.5e 33 0
72 Hn 7 Em* 11 09 05.1044667264 -77 09 58.026125412         13.96 M5e 24 0
73 V* HT Cha V* 11 09 07.9033211208 -76 49 10.632479160           ~ 5 0
74 Sz 30 TT* 11 09 11.72304 -77 29 12.4836   14.89 13.28 13.02 11.032 M2.5+M2 52 0
75 [CCE98] 1-74 TT* 11 09 17.6942588064 -76 27 57.926988648   15.48 13.92   11.72 K4Ve 41 0
76 V* HU Cha Or* 11 09 18.12888 -76 30 29.2500         14.99 M1/2e 50 0
77 V* HV Cha Or* 11 09 22.6489972128 -76 34 32.164757616         16.79 M0.75-M1.75 51 0
78 V* GM Cha Or* 11 09 28.55424 -76 33 28.1376           M3.5-M6.5 45 0
79 CHX 15b Y*O 11 09 40.0612946232 -76 28 39.236612160   15.68 14.04   11.66 K8Ve 36 0
80 V* HW Cha Or* 11 09 41.9146999920 -76 34 58.572141600           M0- 33 0
81 HJM C 7-1 Y*O 11 09 42.5612580768 -77 25 57.929074932         15.91 ~ 36 0
82 HJM C 1-24 TT* 11 09 46.1881553592 -76 34 46.503994080   11.93 18.41   14.72 M3.25e 56 1
83 BYB 43 Y*O 11 09 47.3883040248 -77 26 29.187831192         16.62 M3.25e 49 0
84 ISO-ChaI 206 * 11 09 47.70 -76 51 18.0           ~ 4 0
85 2MASS J11094866-7714383 Y*O 11 09 48.67 -77 14 38.3           M1 10 0
86 HD 97300 Ae* 11 09 50.0199904704 -76 36 47.718191232   9.41 9.20   8.82 B9V 170 1
87 HJM C 4-1 * 11 09 51.9907323912 -76 57 58.885494876           K1.5 6 0
88 ISO-ChaI 217 Y*O 11 09 52.1372780448 -76 39 12.876642648         16.63 ~ 44 0
89 Ced 112 RNe 11 09 52.4 -76 36 57           ~ 31 0
90 ISO-ChaI 220 Y*O 11 09 53.3244652320 -77 28 36.603732468           M5.75 28 0
91 Ass Cha T 1-23 Or* 11 09 53.4189070920 -76 34 25.652641116   13.9 19.50 15.10 13.52 G9IIIe 88 0
92 V* HX Cha Or* 11 09 54.062760 -76 29 25.54332       16.08 14.03 M3.5+M7 64 0
93 V* HY Cha Or* 11 09 54.3714582264 -76 31 11.437434660     21.6   17.27 M1.75e 26 0
94 HJM C 1-2 Or* 11 09 55.0429130952 -76 32 41.105143464         17.85 M0- 31 0
95 V* WX Cha Or* 11 09 58.666944 -77 37 09.03432   14.93 13.85 14.23 12.20 M1+M5 97 0
96 V* WW Cha Or* 11 10 00.0802739160 -76 34 57.963853416   14.74 14.10   10.95 ~ 147 0
97 HJM C 1-4 Y*O 11 10 03.6830951520 -76 33 29.218685616     18.78 16.1 14.72 K8e 56 0
98 V* FN Cha Or* 11 10 04.6714603680 -76 35 45.253161564     14.68 13.89 12.39 K5Ve 53 0
99 V* WY Cha Or* 11 10 07.0339153464 -76 29 37.674167388   15.29 13.87   11.62 K8Ve 82 1
100 2MASS J11100785-7727480 Y*? 11 10 07.8396430440 -77 27 48.063966876         17.79 M5.5 31 0
101 HJM C 1-8 Y*O 11 10 11.3918141448 -76 35 29.247545184         13.75 K5Ve 53 0
102 HJM C 6-2 Y*O 11 10 28.5085562328 -77 16 59.595145932     17.93   13.97 M3Ve 33 0
103 CHSM 17625 * 11 10 33.6704562672 -76 39 22.482497052           G1.7 3 0
104 ISO-ChaI 250 LM* 11 10 36.4196358816 -77 22 13.088141364         16.52 M4.75 19 0
105 Glass Q Y*O 11 10 37.8987149352 -77 32 39.881630256   16.89 14.97   11.90 K5.5+K7 69 0
106 ISO-ChaI 252 Y*? 11 10 41.3874327240 -77 20 47.961251340     22.4 20.06 17.27 ~ 34 0
107 Ass Cha T 1-27 Or* 11 10 49.5667074984 -77 17 51.754670016   16.80 16.64   13.84 M4Ve 76 0
108 V* WZ Cha Or* 11 10 53.3212598040 -76 34 32.057703048   16.41 15.48   13.07 M4Ve 65 0
109 V* IK Cha Or* 11 10 53.5796812512 -77 25 00.472704888         17.51 M4.5 31 0
110 HJM C 2-5 Y*O 11 10 55.9782007344 -76 45 32.646407688         13.95 M6e 45 0
111 HJM E 4-7 LM* 11 11 22.6240346520 -77 05 53.885035788         14.02 M4Ve 19 0
112 V* IM Cha Or* 11 12 03.5025776424 -77 26 00.841371900     20.08     M4.75 32 0

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2023.03.26-00:03:15

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