2007MNRAS.379.1658H

Query : 2007MNRAS.379.1658H

2007MNRAS.379.1658H - Mon. Not. R. Astron. Soc., 379, 1658-1664 (2007/August-3)

Molecular hydrogen emission from discs in the η Chamaeleontis cluster.

HOWAT S.K.R. and GREAVES J.S.

Abstract (from CDS):

Discs in the 6 Myr old cluster η Chamaeleontis were searched for emission from hot H2. Around the M3 star ECHA J0843.3-7905, we detect circumstellar gas orbiting at ∼2 au. If the gas is ultraviolet excited, the ro-vibrational line traces a hot gas layer supported by a disc of mass ∼0.03M☉, similar to the minimum mass solar nebula. Such a gas reservoir at 6 Myr would promote the formation and the inwards migration of gas giant planets.

Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS

Journal keyword(s): circumstellar matter - planetary systems: formation - infrared: stars

Simbad objects: 19

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Number of rows : 19
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* WY Ari Or* 02 56 37.5658451640 +20 05 37.249715436   13.29 12.46     K5/6e 90 0
2 V* DG Tau TT* 04 27 04.6921275888 +26 06 16.060169268 13.57 13.97 10.50 12.28   K6Ve 1092 1
3 RAFGL 5123 Y*O 04 31 34.07736 +18 08 04.9020           K3V/M3III 900 0
4 V* GG Tau Or* 04 32 30.3506925552 +17 31 40.494063144 14.84 14.78 13.40 11.54   M0e+M2.0e 793 1
5 EM* LkCa 15 Or* 04 39 17.7911622816 +22 21 03.390090984   13.01 12.03 11.61   K5:Ve 792 1
6 V* AB Aur Ae* 04 55 45.8458932216 +30 33 04.292077032 7.20 7.16 7.05 6.96 6.70 A0Ve 1176 2
7 V* V582 Mon TT* 06 41 10.3403165544 +09 28 33.487425336   17.404   17.21 16.45 K5e 206 0
8 V* EH Cha Or* 08 41 37.0144539384 -79 03 30.535583220     14.4 14.011   M3.5 62 0
9 V* EK Cha Or* 08 42 27.0967343784 -78 57 47.910415932   16.659 15.153 14.893   M4.5 84 0
10 Cl Mamajek 1 OpC 08 42 32.9 -78 57 47           ~ 392 0
11 V* EL Cha TT* 08 42 38.7832034688 -78 54 42.736732812   15.540 14.081 13.778   M3.0 69 0
12 V* ET Cha Or* 08 43 18.5853516024 -79 05 18.232481832     13.97     M4.0 99 0
13 V* EN Cha Or* 08 44 16.421808 -78 59 08.06316   16.425 14.967 14.688   M4.5 70 0
14 V* EP Cha Or* 08 47 01.6439909496 -78 59 34.380161016     11.1     K5IVe 109 0
15 V* EQ Cha TT* 08 47 56.7585043512 -78 54 53.185560516   14.777 13.308 12.802 10.795 M3 88 0
16 * bet Car PM* 09 13 11.97746 -69 43 01.9473 1.72 1.69 1.69 1.63 1.61 A1III- 229 1
17 V* TW Hya TT* 11 01 51.9053285064 -34 42 17.033218380   11.94 10.50 10.626 9.18 K6Ve 2144 1
18 Haro 1-6 Or* 16 26 03.0276684144 -24 23 36.188140848   14.15 14.01 12.38 10.80 K0 229 2
19 NAME IRAS 16293-2422B Y*O 16 32 22.63 -24 28 31.8           ~ 352 0

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