2007ApJ...666.1219L


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.06CET01:14:57

2007ApJ...666.1219L - Astrophys. J., 666, 1219-1225 (2007/September-2)

Hubble and Spitzer observations of an edge-on circumstellar disk around a brown dwarf.

LUHMAN K.L., ADAME L., D'ALESSIO P., CALVET N., McLEOD K.K., BOHAC C.J., FORREST W.J., HARTMANN L., SARGENT B. and WATSON D.M.

Abstract (from CDS):

We present observations of a circumstellar disk that is inclined close to edge-on around a young brown dwarf in the Taurus star-forming region. Using data obtained with SpeX at the NASA Infrared Telescope Facility, we find that the slope of the 0.8-2.5 µm spectrum of the brown dwarf 2MASS J04381486+2611399 cannot be reproduced with a photosphere reddened by normal extinction. Instead, the slope is consistent with scattered light, indicating that circumstellar material is occulting the brown dwarf. By combining the SpeX data with mid-infrared photometry and spectroscopy from the Spitzer Space Telescope and previously published millimeter data from Scholz and coworkers, we construct the spectral energy distribution (SED) for 2MASS J04381486+2611399 and model it in terms of a young brown dwarf surrounded by an irradiated accretion disk. The presence of both silicate absorption at 10 µm and silicate emission at 11 µm constrains the inclination of the disk to be ∼70°, i.e., ∼20° from edge-on. Additional evidence of the high inclination of this disk is provided by our detection of asymmetric bipolar extended emission surrounding 2MASS J04381486+2611399 in high-resolution optical images obtained with the Hubble Space Telescope. According to our modeling for the SED and images of this system, the disk contains a large inner hole that is indicative of a transition disk (Rin~58R*~0.275 AU) and is somewhat larger than expected from embryo ejection models (Rout=20-40 AU vs. Rout<10-20 AU).

Abstract Copyright:

Journal keyword(s): Accretion, Accretion Disks - Stars: Planetary Systems: Protoplanetary Disks - Stars: Formation - Stars: Low-Mass, Brown Dwarfs - Stars: Pre-Main-Sequence

Simbad objects: 17

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Number of rows : 17

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* BU Ari Or* 02 56 07.9958235242 +20 03 24.205215669   15.14 14.15 14.50   M1:IIIe 53 1
2 V* FM Tau Or* 04 14 13.5839505100 +28 12 49.166941548 14.44   13.80 13.64   M0/2e 196 0
3 V* FS Tau Or* 04 22 02.1925017485 +26 57 30.331063489 17.57   14.10 15.63   M3.5e+M0e 263 0
4 2MASS J04270266+2605304 Y*O 04 27 02.66593 +26 05 30.3790           ~ 136 0
5 V* V1213 Tau Or* 04 31 37.47192 +18 12 24.4800           K7 528 0
6 NAME HK Tau B TT* 04 31 50.58 +24 24 16.4           M1 71 0
7 IRAS 04302+2247 Y*O 04 33 16.50096 +22 53 20.4000           ~ 144 0
8 ITG 3 Y*O 04 38 14.8833303682 +26 11 39.971794234       20.33 17.84 M7e 53 0
9 V* HV Tau C TT* 04 38 35.5121708248 +26 10 41.334466864         14.90 K6 89 0
10 IRAS S04414+2506 BD* 04 44 27.1421731772 +25 12 16.439761677           M7e 65 0
11 COUP 419 Y*O 05 35 11.320 -05 24 26.54           M0 56 0
12 CD-25 11111A TT* 15 49 15.3254009805 -26 00 54.700830998   13.37 12.81 12.73   A5Ve 28 0
13 CD-25 11111 ** 15 49 15.3888 -26 00 52.452           A5Ve+A2IVe 26 0
14 CD-25 11111B TT* 15 49 15.526320 -26 00 50.11812   13.37 12.81 14.02   A2IVe 26 0
15 JCMTSF J162706.3-243702 PoC 16 27 06.5 -24 37 12           ~ 17 0
16 CRBR 2422.8-3423 Y*O 16 27 24.61320 -24 41 03.4080           ~ 83 1
17 BKLT J162813-243139 Y*O 16 28 13.74000 -24 31 39.4608           ~ 49 0

    Equat.    Gal    SGal    Ecl

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