1999A&A...343..883N

Query : 1999A&A...343..883N

1999A&A...343..883N - Astronomy and Astrophysics, volume 343883-893 (1999/3-3)

Search for X-ray emission from bona-fide and candidate brown dwarfs.

NEUHAEUSER R., BRICENO C., COMERON F., HEARTY T., MARTIN E.L., SCHMITT J.H.M.M., STELZER B., SUPPER R., VOGES W. and ZINNECKER H.

Abstract (from CDS):

Following the recent classification of the X-ray detected object V410 x-ray 3 with a young brown dwarf candidate (Briceno et al., 1998AJ....115.2074B) and the identification of an X-ray source in Chamaeleon as young bona-fide brown dwarf (Neuhaeuser & Comeron, 1998Sci...282...83N), we investigate all ROSAT All-Sky Survey and archived ROSAT PSPC and HRI pointed observations with bona-fide or candidate brown dwarfs in the field of view with exposure times ranging from 0.13 to 221ks, including dedicated 64 ks and 42 ks deep ROSAT HRI pointed observations on the low-mass star BRI 0021-0214 and the brown dwarf Calar 3, respectively. Out of 26 bona-fide brown dwarfs, one is newly detected in X-rays, namely ρ Oph GY 202. Also, four out of 57 brown dwarf candidates studied here are detected in X-rays, namely the young Taurus brown dwarf candidates MHO-4, MHO-5, V410 Anon 13, and V410 x-ray 3. The M9.5-type star BRI 0021-0214 is not detected. In the appendix, we also present catalogued, but as yet unnoticed B- and R-band data for some of the objects studied here.

Abstract Copyright: ∼

Journal keyword(s): X-rays: stars - stars: low-mass, brown dwarfs - stars: late-type

CDS comments: CRBR 14 = CRBR 2317.3-1925, 15 = 2317.5-1729, 28 = 2321.6-1918, 33 = 2322.8-1233, p.890 : EC 95 = [EC92] 95

Simbad objects: 105

goto View the references in ADS

Number of rows : 105
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 V* DY Psc BY* 00 24 24.6317407560 -01 58 19.954412004     19.42 17.301 15.022 M9.5V 220 1
2 PC 0025+0447 BD* 00 27 41.9817343344 +05 03 41.691766608           L1.0 75 0
3 2MASS J01245068-3844389 LM* 01 24 50.6914305648 -38 44 39.018053976           M6 13 0
4 DENIS J020529.0-115925 BD* 02 05 29.3651195393 -11 59 29.721210536           L7V 156 0
5 Cl* Melotte 20 AP 270 LM* 03 20 43.4757498672 +50 59 39.654428856           ~ 11 0
6 Cl Melotte 20 MGr 03 26 50.6 +48 51 48           ~ 928 0
7 LP 944-20 LM* 03 39 35.2523500210 -35 25 43.641996333     18.69 16.39 13.288 M9.5Ve 308 0
8 Cl* Melotte 22 MHOBD 3 LM* 03 41 54.1570082112 +23 05 05.055811152         18.27 M8.0 12 0
9 V* V1186 Tau BY* 03 42 26.8135312248 +24 50 20.595026616           ~ 11 0
10 Cl* Melotte 22 PLIZ 8 LM* 03 43 00.1664960928 +24 43 52.633957620         18.80 M7.9 24 0
11 Cl* Melotte 22 PLIZ 16 LM* 03 43 40.28880 +24 30 11.3976         19.50 M8.3 22 0
12 Cl* Melotte 22 ROQUE 4 LM* 03 43 53.53224 +24 31 11.5140         20.25 M9.0 19 0
13 Cl* Melotte 22 PLIZ 11 LM* 03 44 12.6893899704 +25 24 35.024892084           ~ 6 0
14 Cl* Melotte 22 ROQUE 5 LM* 03 44 22.43797 +23 39 01.5879         20.19 M9.0 11 0
15 Cl* Melotte 22 PLIZ 9 LM* 03 44 35.1625882416 +25 13 43.002580476         18.66 M9.3 18 0
16 Cl* Melotte 22 MHOBD 4 * 03 44 41.61 +25 01 36.2           ~ 2 0
17 Cl* Melotte 22 MHOBD 1 LM* 03 44 52.4182779384 +24 36 49.680977616         17.95 M7.0 9 0
18 Cl* Melotte 22 CFHT 19 LM* 03 45 33.1643000928 +25 34 30.052938432           ~ 5 0
19 Cl* Melotte 22 PPL 1 LM* 03 45 41.2662793536 +23 54 10.005382296         18.21 M7.0 36 0
20 Cl* Melotte 22 BPL 79 LM* 03 45 50.6579275080 +24 09 03.709092348         18.67 M7.5 24 0
21 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
22 Cl* Melotte 22 BPL 108 LM* 03 46 42.9819870096 +24 24 50.880511620         18.27 M7.0 25 0
23 Cl* Melotte 22 BPL 132 LM* 03 47 12.0908330760 +24 28 32.037524220         19.06 M8.0 24 0
24 Cl* Melotte 22 TEIDE 1 LM* 03 47 17.9147300712 +24 22 31.746313740         19.26 M8.0 107 0
25 Cl* Melotte 22 BPL 142 LM* 03 47 23.9731284000 +22 42 37.388470572         17.87 M6.5 15 0
26 Cl* Melotte 22 MHOBD 5 * 03 47 27.7212400920 +22 09 38.916758916           ~ 9 0
27 Cl* Melotte 22 BPL 152 LM* 03 47 39.0098259096 +24 36 22.395849876       20.17 17.91 M6.0 33 0
28 Cl* Melotte 22 NPL 38 LM* 03 47 50.4210663240 +23 54 47.336427828         19.18 M8.0 9 0
29 Cl* Melotte 22 PPL 15 LM* 03 48 04.6585327824 +23 39 30.318163560         17.91 M6.5 108 0
30 Cl* Melotte 22 BPL 172 LM* 03 48 19.0040883048 +24 25 12.981418896         18.66 M7.5 27 0
31 Cl* Melotte 22 ROQUE 25 BD* 03 48 30.73544 +22 44 50.5385         21.80 L0.1 21 0
32 Cl* Melotte 22 BRB 16 LM* 03 48 31.51964 +24 34 37.5632         20.00 M9.0 14 0
33 Cl* Melotte 22 CFHT 5 LM* 03 48 44.6884267152 +24 37 23.627958744         17.02 M5.5 32 0
34 Cl* Melotte 22 NPL 40 LM* 03 48 49.04436 +24 20 25.6827         20.55 M9.8 13 0
35 Cl* Melotte 22 BRB 10 LM* 03 49 15.1194644712 +24 36 22.638966408         17.71 M6.5 32 0
36 Cl* Melotte 22 PLIZ 12 LM* 03 51 25.5680723568 +23 45 21.465842004         19.00 M8.0 66 0
37 Cl* Melotte 22 BRB 1 LM* 03 51 51.5439834336 +23 34 49.370818908         16.10 M4.9 39 0
38 Cl* Melotte 22 BRB 8 LM* 03 52 05.8178078136 +24 17 31.213029912       19.32 17.34 M5.6 20 0
39 Cl* Melotte 22 PLIZ 3 LM* 03 52 06.7084395888 +24 16 00.643676448         18.02 M6.0 28 0
40 Cl* Melotte 22 CFHT 6 LM* 03 52 07.8718816512 +23 59 13.769184300           M6.7 10 0
41 Cl* Melotte 22 PLIZ 15 LM* 03 52 18.6548951688 +24 04 27.555121740           ~ 11 0
42 Cl* Melotte 22 BRB 2 LM* 03 52 44.2852984752 +23 54 15.158247624       18.57 16.61 M4.9 26 0
43 Cl* Melotte 22 BRB 5 LM* 03 52 51.7858923696 +23 33 48.283557264       18.600 16.60 ~ 24 0
44 Cl* Melotte 22 BRB 6 LM* 03 53 09.6294213576 +23 33 47.961228600       18.77 16.50 ~ 21 0
45 Cl* Melotte 22 BPL 283 LM* 03 53 23.1548800968 +23 19 20.148390372         18.34 ~ 18 0
46 Cl* Melotte 22 PLIZ 6 LM* 03 53 55.1153189928 +23 23 36.301442892         17.752 M8.0 26 0
47 Cl* Melotte 22 CFHT 26 LM* 03 54 01.39844 +24 44 46.8838           ~ 4 0
48 Cl* Melotte 22 PLIZ 20 LM* 03 54 05.32560 +23 33 59.7708         19.571 M9.0 16 0
49 Cl* Melotte 22 CFHT 22 LM* 03 54 59.43547 +23 58 08.1190           ~ 4 0
50 Cl* Melotte 22 BRB 13 LM* 03 55 12.5863618464 +23 17 37.640681016         18.62 M7.0 16 0
51 [SS94] V410 X-ray 3 TT* 04 18 07.9729489560 +28 26 03.667161660     18.319     M6 82 0
52 2MASS J04181710+2828419 TT* 04 18 17.1069408984 +28 28 41.928528396     22.175     M6.4 93 0
53 2MASS J04312405+1800215 LM* 04 31 24.0577715784 +18 00 21.456961776   20.38 18.678   14.32 M7 84 0
54 2MASS J04321606+1812464 TT* 04 32 16.0659498216 +18 12 46.383640812   19.20 17.595     M6.5 97 0
55 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
56 HD 42581B BD* 06 10 34.80 -21 52 00.0           T6.5 549 0
57 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
58 Cl* NGC 2632 RP r1 * 08 40 54.6 +19 15 05         21.01 ~ 8 0
59 G 196-3 PM* 10 04 21.4627410744 +50 23 13.386435576       11.323   M3.0V 90 0
60 [CNK98] IR 1 IR 11 06 42.7 -77 35 57           ~ 3 0
61 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1266 1
62 [NC98] Cha HA 1 Or* 11 07 16.6710048312 -77 35 53.212777692   22.8 21.0   16.38 M7.5/8e 100 0
63 [CNK98] IR 2 IR 11 07 32.9 -77 37 53           ~ 3 0
64 V* HK Cha Or* 11 07 42.3364909752 -77 33 59.394350844   21.9 19.8   15.26 M5.25e 93 0
65 V* HL Cha Or* 11 07 52.2574621728 -77 36 57.037742172   21.5 19.51   15.07 M5.5e 59 0
66 [NC98] Cha HA 4 Or* 11 08 18.9694304592 -77 39 17.131209948   20.5 18.52   14.50 M5.5e 46 0
67 [NC98] Cha HA 5 Or* 11 08 24.1193575992 -77 41 47.438803392   21.3 19.18   14.85 M5.5e 60 0
68 V* HQ Cha Or* 11 08 39.5017287912 -77 34 16.733892756   21.7 19.75   15.06 M5.75e 80 0
69 [CNK98] IR 3 IR 11 08 41.2 -77 37 15           ~ 3 0
70 SIPS J1228-1547 BD* 12 28 15.23184 -15 47 34.2312       20.414 18.042 L5.5+L5.5 151 0
71 NAME Kelu-1 BD* 13 05 40.1642434199 -25 41 05.712165150         16.85 L2+L3.5 267 0
72 CRBR 2317.3-1925 Y*O 16 26 18.82056 -24 26 10.5216           M7 47 0
73 CRBR 2317.5-1729 LM* 16 26 18.98232 -24 24 14.2596           M6 51 0
74 [GY92] 5 Or* 16 26 21.5381846568 -24 26 00.994958844       18.30 15.80 M7 77 1
75 [GY92] 10 Y*O 16 26 22.18584 -24 23 52.3572           M8.5 33 0
76 [RR90] Oph 2320.8-1721 Y*O 16 26 22.26912 -24 24 07.0632           M8 72 0
77 [RR90] Oph 2321.6-1918 * 16 26 23.04696 -24 26 02.3640           ~ 9 0
78 [RR90] Oph 2322.8-1233 * 16 26 24.34704 -24 19 19.1316           ~ 6 0
79 [GY92] 31 Y*O 16 26 25.23384 -24 23 23.9208           M5.5 28 1
80 VSSG 29 LM* 16 26 27.8153977560 -24 26 41.853907500         17.85 M5 49 1
81 [GY92] 59 TT* 16 26 31.3666819344 -24 25 30.308255112         18.90 M3.75 23 1
82 [GY92] 64 Y*O 16 26 32.52576 -24 26 35.4480           M8 24 0
83 [GY92] 84 Y*O 16 26 38.80368 -24 23 22.7328           M6 22 0
84 [GY92] 107 * 16 26 42.7061416272 -24 22 22.984370400           M3 7 0
85 [RR90] Oph 2349.8-2601 Or* 16 26 51.2924609616 -24 32 42.001375272           M8.5 57 0
86 BBRCG 16 TT* 16 26 56.91984 -24 28 37.0740           ~ 17 0
87 BBRCG 21 Y*O 16 27 05.97624 -24 28 36.3252           M7 40 0
88 BBRCG 26 Or* 16 27 10.03536 -24 29 13.3008           ~ 24 0
89 YLW 47 TT* 16 27 38.3206405584 -24 36 58.594880844       17.69 15.52 M0 104 0
90 [GY92] 310 Or* 16 27 38.6295993720 -24 38 39.214842072         17.40 M8 70 0
91 ROX 27 TT* 16 27 39.4295731464 -24 39 15.527230272       15.76 14.03 M0+M4 137 0
92 [GY92] 326 TT* 16 27 42.7019158944 -24 38 50.619050052         17.30 M2 45 0
93 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
94 2MASS J18295785+0112514 Y*O 18 29 57.858 +01 12 51.40           ~ 65 3
95 [WMB97] 185815.3-370435 IR 19 01 37.8 -37 00 16           ~ 4 0
96 V* V710 CrA Or* 19 01 50.67792 -36 58 09.6132           K7: 131 0
97 NAME Corona Australis Cloud MoC 19 01 51 -36 58.9           ~ 554 0
98 2MASS J19015374-3700339 Y*O 19 01 53.7537206544 -37 00 34.050751956           M7.5 27 2
99 [FP2007] J190201.94-365400.1 Y*O 19 02 01.96 -36 54 00.0           ~ 8 0
100 2MASS J19020296-3700109 NIR 19 02 02.96 -37 00 10.9           ~ 3 0
101 [WMB97] 185853.3-370328 IR 19 02 15.7 -36 59 06           ~ 6 0
102 VB 10 PM* 19 16 57.6109547886 +05 09 01.600923413     17.30     M8V 499 1
103 [HDJ98] D4 * 21 21 01.93 -45 13 58.6           ~ 3 0
104 [HDJ98] D7 * 21 25 22.94 -46 38 21.0           ~ 3 0
105 [HDJ98] 12 * ~ ~           ~ 1 0

To bookmark this query, right click on this link: simbad:objects in 1999A&A...343..883N and select 'bookmark this link' or equivalent in the popup menu