2005A&A...430L..61T


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.20CET21:56:25

2005A&A...430L..61T - Astronomy and Astrophysics, volume 430, L61-64 (2005/2-2)

Evidence for a hot dust-free inner disk around 51 Oph.

THI W.-F., VAN DALEN B., BIK A. and WATERS L.B.F.M.

Abstract (from CDS):

We report on the observation of CO bandhead emission around 51 Oph (Δv=2). A high resolving power (R≃10000) spectrum was obtained with the infrared spectrometer ISAAC mounted on VLT-ANTU. Modeling of the profile suggests that the hot (Tgas=2000-4000K) and dense (nH>1010cm–3) molecular material as probed by the CO bandhead is located in the inner AU of a Keplerian disk viewed almost edge-on. Combined with the observation of cooler gas (Tgas=500-900K) by ISO-SWS and the lack of cold material, our data suggest that the disk around 51 Oph is essentially warm and small. We demonstrate the presence of a dust-free inner disk that extents from the inner truncation radius until the dust sublimation radius. The disk around 51 Oph may be in a rare transition state toward a small debris disk object.

Abstract Copyright:

Journal keyword(s): stars: formation - accretion, accretion disks - planetary systems: protoplanetary disks

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* AB Aur Ae* 04 55 45.8459978418 +30 33 04.293281305 7.20 7.16 7.05 6.96 6.70 A0Ve 901 2
2 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1603 1
3 V* TW Hya TT* 11 01 51.9054298616 -34 42 17.031550898   11.94 10.50 10.626 9.18 K6Ve 1449 1
4 * c Oph Be* 17 31 24.9541340 -23 57 45.513592 4.75 4.81 4.81 4.74 4.72 A0V 250 0
5 HD 163296 Ae* 17 56 21.2882188601 -21 57 21.872343282 7.00 6.93 6.85 6.86 6.67 A1Vep 734 0

    Equat.    Gal    SGal    Ecl

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2019.11.20-21:56:25

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