1996A&A...310..456P

Query : 1996A&A...310..456P

1996A&A...310..456P - Astronomy and Astrophysics, volume 310456-473 (1996/6-2)

ROSAT X-ray observations of the young cluster IC 348.

PREIBISCH T., ZINNECKER H. and HERBIG G.H.

Abstract (from CDS):

We have observed the young stellar cluster IC 348 in X-rays for the first time. In very deep pointings with the ROSAT PSPC and HRI we have detected a total of 116 X-ray sources. Most sources appear to be embedded (AV≃5) in their parent molecular cloud. We use near-infrared (J,H,K) photometric data from the study of Lada & Lada (1995) to derive individual extinctions in order to calculate the X-ray luminosities. We find 56 stars to be probable new cluster members, presumably weak line T Tauri stars, because of their X-ray properties. Since previously 49 Hα emission line stars and 17 proper motion members were known, this nearly doubles the number of known member stars in IC 348. The early type (B5-F5) stars do not appear to be intrinsic X-ray emitters. The late type stars display similar X-ray properties as those in other star forming regions. The weak line T Tauri stars seem to be stronger X-ray emitters than the classical T Tauri stars, but this difference may be caused by a selection effect. The total integrated X-ray luminosity in IC 348 is at least 1.6x1032erg/s in the ROSAT band (0.1-2.4keV). The possible influence of the X-radiation on the ionization state of the cloud and on its further evolution is briefly discussed. We report the detection of several large X-ray flares in IC 348 on timescales of typically a few hours. For some sources we also find variability on time scales of several years by comparing their count rates in the two pointed ROSAT observations and the ROSAT All Sky Survey. About 45% of the X-ray sources show considerable variability on long or short time scales.

Abstract Copyright: ∼

Journal keyword(s): X-rays: stars - open clusters: individual: IC 348 - pre-main-sequence stars: pre-main-sequence - stars: coronae

Nomenclature: Table 1: [PZH96] NNN (Nos 1-116). Table 5: IfAHA NN N=31 among (Nos 5-58)

Simbad objects: 161

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Number of rows : 161
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 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1553 0
2 RX J034104.9+321232 X 03 41 05.0 +32 12 32           ~ 1 0
3 IRAS 03385+3149 IR 03 41 38.7 +31 58 58           ~ 6 0
4 RX J034217.2+314108 X 03 42 17.3 +31 41 08           ~ 1 0
5 RX J034242.7+320341 X 03 42 42.7 +32 03 41           ~ 1 0
6 RX J034307.7+321028 X 03 43 07.7 +32 10 28           ~ 1 0
7 EM* LkHA 85 Or* 03 43 28.2008932683 +32 01 59.382218295   17.5   14.94 13.61 M1.75 35 0
8 RX J034333.2+320623 X 03 43 33.3 +32 06 23           ~ 1 0
9 RX J034336.3+323151 X 03 43 36.4 +32 31 51           ~ 1 0
10 HD 281153 SB* 03 43 41.0070962760 +32 37 32.081877984   9.62 9.10     G0 14 0
11 EM* LkHA 86 Or* 03 43 44.6175338292 +32 08 17.764361951   18.0   14.65   M0 70 0
12 IRAS 03406+3144 FIR 03 43 47.7 +31 53 29           ~ 4 0
13 RX J034348.6+321551 X 03 43 48.6 +32 15 51           ~ 2 0
14 RX J034348.8+320731 X 03 43 48.8 +32 07 31           ~ 1 0
15 Cl* IC 348 LRL 147 TT* 03 43 49.3983138360 +32 10 39.895299732       16.36 14.76 M3.5 40 0
16 RX J034349.3+321805 X 03 43 49.4 +32 18 05           ~ 1 0
17 Cl* IC 348 LRL 22 Or* 03 43 51.2427819350 +32 13 09.201638506   14.26 12.96     G5 42 0
18 Cl* IC 348 LRL 256 Y*O 03 43 55.2696870168 +32 07 53.319253980   21.96 20.10     M5 40 0
19 Cl* IC 348 LRL 47 Or* 03 43 55.5111436392 +32 09 32.174778929   16.3 14.68     K0 40 0
20 Cl* IC 348 LRL 142 TT* 03 43 56.2018875938 +32 08 36.216775903   19.14 17.19 15.95 14.60 M1.6 45 0
21 HH 211 Y*O 03 43 56.52 +32 00 52.8           ~ 414 0
22 IC 348 3 * 03 43 58.0316277552 +32 09 47.110716324   12.09 11.34     F8 21 0
23 EM* LkHA 87 Or* 03 43 58.5607078344 +32 17 27.518005176   18.5   15.85 14.36 M3.75 34 0
24 NAME FGN ISM 03 43 58.8 +32 01 52           ~ 27 0
25 EM* LkHA 88 Or* 03 43 58.9057446502 +32 11 27.160275403   18.5       M1 48 0
26 EM* LkHA 89 Or* 03 43 59.0844245478 +32 14 21.310056732       17.27 15.82 M3.5 46 0
27 Cl* IC 348 LRL 87 TT* 03 43 59.7124432448 +32 14 02.928291694       15.50 14.19 M0.75 45 0
28 RX J034400.3+321558 X 03 44 00.3 +32 15 58           ~ 1 0
29 Cl* IC 348 CB 35 Or* 03 44 02.1762774093 +32 19 39.984311154       15.73 14.11 M1.6 35 0
30 Cl* IC 348 LRL 160 TT* 03 44 02.5848330600 +32 01 34.958271324       16.98 15.10 ~ 25 0
31 RX J034403.9+320240 X 03 44 04.0 +32 02 40           ~ 3 0
32 RX J034404.7+322503 X 03 44 04.8 +32 25 03           ~ 1 0
33 Cl* IC 348 LRL 56 Or* 03 44 05.0014616799 +32 09 53.781355926   16.78 15.08     K3 45 0
34 RX J034405.2+320711 X 03 44 05.3 +32 07 11           ~ 1 0
35 Cl* IC 348 LRL 156 TT* 03 44 06.7856574768 +32 07 54.097683672   21.00 18.81 17.27 15.48 M4.25 54 0
36 HD 281160 * 03 44 08.4690100008 +32 07 16.556383164   10.40 9.94     A0 46 0
37 Cl* IC 348 LRL 44 Or* 03 44 08.8568176499 +32 16 10.551860405           K0 37 0
38 IC 348 5 AB? 03 44 09.1481558976 +32 07 09.353022348   10.54 10.02 9.41   A2 42 0
39 Cl* IC 348 H 59 * 03 44 09.9949088616 +32 09 41.751001980   20.71 18.70   16.190 ~ 7 0
40 Cl* IC 348 LRL 163 TT* 03 44 11.2205918509 +32 08 16.224236320   20.92 18.75 17.38 15.076 M5.25 43 0
41 V* V692 Per Or* 03 44 11.2530785583 +32 06 12.148284860   19.01   15.72 14.244 M0 51 0
42 2MASS J03441143+3219401 TT* 03 44 11.4409732659 +32 19 40.177024672       16.13 14.65 M3e 34 0
43 RX J034414.2+315547 X 03 44 14.2 +31 55 47           ~ 1 0
44 RX J034415.0+311631 X 03 44 15.1 +31 16 31           ~ 1 0
45 V* V693 Per Or* 03 44 16.4222464872 +32 09 55.247809434   15.91     12.801 K0 55 0
46 Cl* IC 348 LRL 169 TT* 03 44 17.7665725680 +32 04 47.700557652     20.00 18.09 15.683 M3.5 40 0
47 Cl* IC 348 LRL 93 TT* 03 44 17.9097378068 +32 12 20.285336942   18.52 16.82 15.59 13.938 M2.5 43 0
48 Cl* IC 348 LRL 31 Or* 03 44 18.1608524784 +32 04 57.035451324         15.357 G1 70 0
49 Cl* IC 348 LRL 30 Y*O 03 44 19.1233580656 +32 09 31.285007760   12.70 11.90 11.24 11.008 F0 63 0
50 * omi Per SB* 03 44 19.1337687984 +32 17 17.687367960 3.13 3.91 3.91 3.71 3.71 B1III 628 0
51 V* V903 Per Or* 03 44 20.0141051808 +32 06 45.600528744   21.19 19.25 17.77 15.836 M3.5 46 0
52 Cl* IC 348 LRL 128 Or* 03 44 20.1720816120 +32 08 56.557011696   19.97 18.06 16.76 14.815 M2 56 0
53 RX J034420.2+315936 X 03 44 20.2 +31 59 36           ~ 1 0
54 Cl* IC 348 LRL 119 TT* 03 44 21.2539658702 +32 05 02.506138236   20.11 18.01 16.82 15.134 M2.5 44 0
55 EM* LkHA 90 Or* 03 44 21.5539196675 +32 10 17.470529493   19.59   16.20 14.643 M1.5 62 0
56 Cl* IC 348 LRL 185 Or* 03 44 21.5569056777 +32 15 09.773869797         14.93 M3.4 39 0
57 V* V697 Per Or* 03 44 21.6112665672 +32 10 37.675312176   20.63 18.65 16.42 15.947 K7 67 0
58 V* V698 Per Or* 03 44 22.2859278240 +32 05 42.785030904   19.77   15.88 14.807 K8 60 0
59 EM* LkHA 91 Or* 03 44 22.3205644542 +32 12 00.717890611   18.33 16.89 16.35 14.615 M1 65 0
60 Cl* IC 348 LRL 72 TT* 03 44 22.5749858136 +32 01 53.703140988       16.01 14.40 M2.5 50 0
61 V* V699 Per Or* 03 44 23.6699049840 +32 06 46.527001704   18.88   15.83 14.199 M2.5 41 0
62 Cl* IC 348 LRL 38 Or* 03 44 23.9842320936 +32 11 00.057780492   14.66 13.47   11.991 G0 55 0
63 Cl* IC 348 LRL 45 Or* 03 44 24.2853531408 +32 10 19.515891900   16.76 15.12     K5 40 0
64 Cl* IC 348 LRL 10 Or* 03 44 24.6652850040 +32 10 15.076520436   12.53 11.59   10.416 F2 47 0
65 RX J034424.7+320352 X 03 44 24.7 +32 03 52           ~ 2 0
66 V* V908 Per Or* 03 44 25.55136 +32 11 30.7932       16.47 15.076 M0 37 0
67 V* V700 Per Or* 03 44 25.5711795131 +32 12 29.945102117   17.63   14.79 13.57 M0.5 46 0
68 EM* LkHA 92 Or* 03 44 26.0271631368 +32 04 30.453181536   17.13 15.06   12.686 ~ 88 0
69 [HL2013] 056.11124+32.13898 Y*? 03 44 26.72 +32 08 19.0   22.23 19.91     M6.7 10 0
70 Cl* IC 348 LRL 69 TT* 03 44 27.0166278274 +32 04 43.695835153   17.68 15.94 15.07 13.624 M1 54 0
71 V* V702 Per Or* 03 44 27.2458387344 +32 10 37.370975736         16.475 M4 39 0
72 Cl* IC 348 LRL 373 TT* 03 44 27.9739427640 +32 05 19.709673036     20.95 19.20 17.128 M6.3 23 0
73 V* V704 Per Or* 03 44 28.4664769992 +32 07 22.463552712   17.14   14.44 13.460 K6.5 52 0
74 EM* LkHA 93 Or* 03 44 29.7231564672 +32 10 39.845998632   19.02 17.05   14.287 K8 72 0
75 GSC 02359-00943 Y*O 03 44 29.9789178192 +32 25 58.900469628     11.68     A1 14 0
76 Cl* IC 348 LRL 104 Or* 03 44 29.9813410836 +32 19 22.760867695         14.71 M2.8 34 0
77 Cl* IC 348 LRL 19 Or* 03 44 30.8151422400 +32 09 55.805995692   12.65 11.80   10.813 A2 59 0
78 IC 348 OpC 03 44 31.1 +32 10 02           ~ 1476 1
79 Cl* IC 348 H 253 Or* 03 44 31.1842617480 +32 05 58.958804256         18.525 M0 29 0
80 V* V705 Per dS* 03 44 31.1966304792 +32 06 22.152587220   11.3 10.6   9.474 F3V 54 0
81 Cl* IC 348 LRL 168 Or* 03 44 31.3437170592 +32 10 46.978426128     20.10   15.911 M4 38 0
82 V* V706 Per Or* 03 44 31.5283424472 +32 08 44.964075120   15.62     12.241 K2 51 0
83 RX J034431.6+320019 X 03 44 31.7 +32 00 19           ~ 1 0
84 V* V914 Per Or* 03 44 32.7392833320 +32 08 37.487918508   15.06 13.54   11.755 G6 55 0
85 V* V707 Per Or* 03 44 32.7642744360 +32 09 15.759004032   19.68   16.14 14.649 M3.25 31 0
86 V* V915 Per Or* 03 44 33.3034762440 +32 09 39.605988312   18.49 17.00 15.10 14.445 M2 33 0
87 V* V708 Per Or* 03 44 33.9795710937 +32 08 54.172955427   17.56     13.55 M0 56 0
88 HD 281159 Y*O 03 44 34.1873929 +32 09 46.137563 9.19 9.21 8.53 8.85 7.850 B5V 234 0
89 Cl* IC 348 LRL 74 TT* 03 44 34.2634660152 +32 10 49.723131864   19.72 17.66     M2.3 44 0
90 V* V917 Per Or* 03 44 34.8704549976 +32 06 33.722302284   16.45 15.63 14.55 13.338 K5.5 54 0
91 IC 348 12 Or* 03 44 35.3610354384 +32 10 04.591121088       10.06 9.098 A2 70 0
92 EM* LkHA 94 Or* 03 44 35.3648593200 +32 07 36.233093784   19.29 17.25     M0 57 0
93 Cl* IC 348 LRL 165 Or* 03 44 35.4519250704 +32 08 56.363890776     20.73 17.71 16.028 M5.25 55 0
94 RX J034435.4+315331 X 03 44 35.5 +31 53 31           ~ 1 0
95 RX J034435.4+321538 X 03 44 35.5 +32 15 38           ~ 1 0
96 Cl* IC 348 LRL 255 TT* 03 44 35.6861005656 +32 04 52.778664048   21.73 19.86 18.10 16.007 M4.8 33 0
97 V* V918 Per Or* 03 44 36.9359314800 +32 06 45.523043424   14.47 12.86 11.69 10.900 G3 63 0
98 V* V919 Per Or* 03 44 37.3854713040 +32 12 24.176014272       17.89 15.747 M2 58 0
99 V* V710 Per Or* 03 44 37.4061666426 +32 09 00.913479244   19.50   16.28 15.089 M1 50 0
100 EM* LkHA 95 Or* 03 44 37.8759632496 +32 08 04.185597552   19.05 17.14 15.72 14.049 K7 75 0
101 EM* LkHA 96 Or* 03 44 37.9729193436 +32 03 29.714819670   17.15   14.66 13.284 K6 74 0
102 V* V713 Per Or* 03 44 37.9990674624 +32 11 37.014975240   21.5     15.549 M4 49 0
103 V* V715 Per Or* 03 44 38.4495745560 +32 07 35.754473496   17.77   14.52 13.189 K6 61 0
104 V* V716 Per Or* 03 44 38.5380416738 +32 08 00.666727470   19.29   15.85 14.184 M1.25 74 0
105 Cl* IC 348 LRL 98 TT* 03 44 38.5972773432 +32 05 06.461204280   20.38 18.50 16.94 14.785 M2.6 38 0
106 V* V717 Per Or* 03 44 38.7071206632 +32 08 42.039773592   21.23 18.94 15.60 13.883 K3 39 0
107 Cl* IC 348 LRL 300 Y*O 03 44 38.9608743720 +32 03 19.740864492   20.94 19.57     M5 25 0
108 V* V921 Per Or* 03 44 39.1644477120 +32 09 18.248019876   16.085 14.541 14.341 12.203 G8 44 0
109 RX J034439.4+321905 X 03 44 39.5 +32 19 05           ~ 2 0
110 V* V923 Per Or* 03 44 40.1111621408 +32 11 34.175077050   17.85 15.98 14.79 13.635 K2 54 0
111 Cl* IC 348 LRL 454 LM* 03 44 41.5656037320 +32 10 39.321630588       19.07 17.827 M5.75 24 0
112 RX J034441.8+322317 X 03 44 41.9 +32 23 18           ~ 1 0
113 Cl* IC 348 LRL 42A Or* 03 44 42.0060140544 +32 08 59.984573172   20.21 18.97   14.794 M4 41 0
114 Cl* IC 348 LRL 42B Or* 03 44 42.1327411632 +32 09 02.059415748   21.06 19.08     M2 32 0
115 V* V924 Per Or* 03 44 42.6104595672 +32 06 19.468406916   17.73 16.12 15.10 13.970 M1 50 0
116 RX J034442.6+321759 X 03 44 42.7 +32 17 59           ~ 1 0
117 Cl* IC 348 LRL 153 Or* 03 44 42.7580308416 +32 08 33.763693236     19.94   15.760 M4 53 0
118 Cl* IC 348 LNB 79 V* 03 44 43.4197218144 +32 08 17.260135260   16.11 14.69 13.77 12.864 M1.7 29 0
119 Cl* IC 348 LRL 52 Or* 03 44 43.5105308400 +32 07 42.945773592       17.01 14.926 M1 58 0
120 V* V925 Per Or* 03 44 44.5778212224 +32 08 12.548048892   21.22 19.19   15.496 M2 59 0
121 EM* LkHA 97 Or* 03 44 44.7116833560 +32 04 02.467777548   18.01 16.22   13.166 M0 54 0
122 Cl* IC 348 LRL 112 TT* 03 44 44.9591277823 +32 13 36.323274370       17.40 15.36 M3.7 37 0
123 V* V927 Per Or* 03 44 50.6461079256 +32 19 06.465850176   12.27 11.22 8.10   A0 38 0
124 IRAS 03417+3207 IR 03 44 51.7 +32 16 38           ~ 3 0
125 RX J034452.0+315850 X 03 44 52.1 +31 58 50           ~ 1 0
126 RX J034452.0+320049 X 03 44 52.1 +32 00 49           ~ 1 0
127 Cl* IC 348 LRL 184 TT* 03 44 53.7419516616 +32 06 52.031097396     19.74 18.04 16.03 M4 29 0
128 RX J034455.8+320543 X 03 44 55.8 +32 05 43           ~ 1 0
129 EM* LkHA 98 TT* 03 44 56.1385232231 +32 09 15.223950537       14.69 5.26 K0 71 0
130 RX J034458.4+325923 X 03 44 58.4 +32 59 23           ~ 1 0
131 RX J034500.1+321738 X 03 45 00.2 +32 17 38           ~ 1 0
132 RX J034501.5+321421 X 03 45 01.5 +32 14 21           ~ 1 0
133 Cl* IC 348 LRL 79 Or* 03 45 01.5148923919 +32 10 51.321599373     12.64 14.26 13.26 K0 45 0
134 Cl* IC 348 LRL 150 TT* 03 45 02.8447341192 +32 07 00.659597448       17.49 15.45 ~ 23 0
135 RX J034503.7+320931 X 03 45 03.8 +32 09 31           ~ 1 0
136 RX J034505.9+320303 X 03 45 06.0 +32 03 03           ~ 1 0
137 Cl* IC 348 LRL 20 Or* 03 45 07.6252811275 +32 10 27.913871715   13.85 12.67     G1 48 0
138 IC 348 18 Or* 03 45 07.7253850946 +32 00 27.242747336   14.30 13.03     K0V 34 0
139 Cl* IC 348 LRL 11 TT* 03 45 07.9636953768 +32 04 01.910300376           ~ 34 0
140 RX J034514.5+322559 X 03 45 14.6 +32 25 59           ~ 1 0
141 EM* LkHA 99 Or* 03 45 16.3442390893 +32 06 19.907375114   18.5       M2.4 51 0
142 RX J034518.4+321212 X 03 45 18.5 +32 12 12           ~ 1 0
143 RX J034518.6+321936 X 03 45 18.7 +32 19 36           ~ 1 0
144 EM* LkHA 100 TT* 03 45 20.4569705531 +32 06 34.435701593   18.5   14.90 13.42 M1 56 0
145 Cl* IC 348 LRL 10373 Or* 03 45 22.1524403736 +32 02 03.926132952         15.12 M5.0 16 0
146 RX J034524.0+322445 X 03 45 24.1 +32 24 45           ~ 1 0
147 GSC 02360-00562 * 03 45 24.7511541744 +32 09 48.785018328     15.20 14.75   ~ 1 0
148 2MASS J03453061+3201557 TT* 03 45 30.6147330050 +32 01 55.667597178       14.42 13.28 ~ 26 0
149 RX J034533.5+315642 X 03 45 33.6 +31 56 42           ~ 1 0
150 RX J034534.3+320325 X 03 45 34.3 +32 03 25           ~ 1 0
151 Cl* IC 348 F 23 * 03 45 38.4563689608 +32 26 59.464213224   12.76 11.91     G2IV-V 6 0
152 HD 281158 Y*? 03 46 23.7088775256 +32 15 19.327376664   10.01 9.68     B9 24 0
153 RX J034628.7+322655 X 03 46 28.7 +32 26 55           ~ 1 0
154 RX J034725.3+322848 X 03 47 25.4 +32 28 48           ~ 1 0
155 NAME Flame Nebula HII 05 41 42.7 -01 54 44           ~ 715 1
156 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1498 0
157 NGC 2024 Cl* 05 41 43 -01 50.5           ~ 1198 1
158 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
159 Cl* IC 348 F 21 * ~ ~   12.32 11.64     G0 2 0
160 Cl* IC 348 F 24 * ~ ~   9.87 9.12     B5 2 0
161 IfAHA 18 Em* ~ ~           ~ 1 0

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