Multiwavelength Imaging of Edge-on Protoplanetary Disks: Quantifying the Growth of Circumstellar Dust
Young, edge-on circumstellar disks are uniquely valuable laboratories for the study of planet formation. In these objects, the central star is occulted from direct view, significant PSF artifacts are absent, and the disk is clearly seen as a central dust lane flanked by faint disk reflected light. The detailed morphology of these nebulae and its variation with wavelength provide crucial information on the disk internal structure and the properties of its constituent dust grains. A key observable is the slope defining the wavelength dependence of the dust scattering opacity, which becomes shallower when grain growth has taken place; multiwavelength resolved disk images are the key dataset enabling such measurements. Recent analyses of three different edge-on disks have revealed a diversity in their dust properties that is indicative of different degrees of dust grain evolution having taken place in each system. This characterization of disk grain growth, when applied comparatively to a larger sample of these objects, would enable the construction of an evolutionary sequence of young disks at successive stages on the road to planet formation. In pursuit of this goal, we have identified a sample of 15 edge-on disks previously discovered by HST or groundbased telescopes, but for which high fidelity, high spatial resolution images do not yet exist in both the optical and near-infrared. We propose broad-band multicolor imaging with NICMOS of all these targets, and ACS imaging of nine of these targets In combination with existing data, the proposed images will form a complete database of high resolution optical/near-IR images for these 15 disk systems. Scattered light modeling will be used to derive the disk structure and dust properties, yielding results that will be of fundamental importance for our understanding of grain properties during protoplanetary disk evolution.
This program seeks to observe faint, fully nebulous young stellar disks in a
variety of different optical and near-IR wavelengths. The brighter sources are
observed at a maximum number of wavelengths such that adequate S/N
is achieved within 1 orbit per object for each instrument. For some of the
fainter objects, we spend an entire orbit at one or two wavelengths to
maximize S/N. This is a program to obtain wide-band photometry, so no
narrow-band filters are used. Typically, we take a few CR-split
exposures per orbit for ACS and 2-3 dithers per wavelength for NICMOS.
Filters used are F110W, F160W, and F205W for NICMOS and F555W and F814W
for ACS. In some cases, the source observed has a bright optical
companion. For these targets, we have specified orients to avoid the
diffraction spikes overlying our faint, nebulous primary source.
STAR FORMATION
12
false
0.0
false
false
false
false
false
false
SUPPORTED
STAR
HERBIG AE/BE
PROTOPLANETARY DISK
YSO
J=11.29 +/- 0.03, H=10.31 +/- 0.03, K=8.92 +/- 0.02
HBC 313
LKHA 233
J2000
22 34 41.0100
+40 40 3.60
J2000
STAR
YSO
T TAURI STAR
PROTOPLANETARY DISK
J=10.6 +/- 0.02, H=9.84 +/- 0.02, K=9.5 +/- 0.02
HBC 9
GS 1230-718
J2000
02 56 7.9900
+20 03 24.30
J2000
STAR
PROTOPLANETARY DISK
T TAURI STAR
J=16.5+/- 0.15, H=16.0+/-0.15, K=16.1 +/- 0.3, TYPE=M0.5
00 00 0.0000
+00 00 0.00
J2000
STAR
YSO
T TAURI STAR
PROTOPLANETARY DISK
J2000
04 18 58.2900
+28 12 23.90
J2000
STAR
YSO
T TAURI STAR
PROTOPLANETARY DISK
J=14.68 mag, H=13.02 mag, K=11.88 mag, SIZE=1"
J2000
04 29 5.0200
+26 49 7.90
J2000
STAR
YSO
PROTOPLANETARY DISK
PP-13
J2000
04 10 40.9600
+38 07 51.20
J2000
STAR
YSO
T TAURI STAR
PROTOPLANETARY DISK
CB-26 IRS
IRAS 04559+5200
J2000
04 59 50.7400
+52 04 43.80
J2000
STAR
YSO
HERBIG AE/BE
PROTOPLANETARY DISK
TYPE=A5, Companion edge-on disk is ~3 mag fainter
IRAS-15462-2551
GSC-06782-01589
J2000
15 49 15.4250
-26 00 52.50
J2000
STAR
YSO
T TAURI STAR
PROTOPLANETARY DISK
J2000
16 27 5.9100
-24 37 8.20
J2000
STAR
YSO
T TAURI STAR
PROTOPLANETARY DISK
size=2, J > 21, H=18 +/- 0.2, K=13.3 +/- 0.1
J2000
16 27 24.6100
-24 41 3.30
J2000
STAR
YSO
T TAURI STAR
PROTOPLANETARY DISK
R=18.4, I=17.16, J=15.93, H=14.78, K=13.98
2MASSJ16281370-2431391
FLYING-SAUCER
J2000
16 28 13.7000
-24 31 39.00
J2000
STAR
A0-A3 III-I
DISK
DUST LANE
POST-AGB STAR
R=14.03, I=13.65, J=13.6 +/- 0.06, H=13 +/- 0.07, K=12.1 =/- 0.04
GOMEZ-HAMBURGER
J2000
18 09 13.3000
-32 10 48.00
J2000
STAR
YSO
PROTOPLANETARY DISK
Actually K band flux
J2000
21 24 7.5100
+49 59 9.00
J2000
STAR
YSO
T TAURI STAR
PROTOPLANETARY DISK
I band magnitude
ASR-41
J2000
03 28 51.3200
+31 17 40.00
J2000
STAR
YSO
T TAURI STAR
PROTOPLANETARY DISK
J magnitude
J2000
05 35 21.5700
-05 09 38.90
J2000
STAR
YSO
PROTOPLANETARY DISK
T TAURI STAR
V mag above is actually J band. J=14.76, H=13.56, K=12.71
J2000
20 57 5.9300
+77 36 54.60
J2000
STAR
YSO
T TAURI STAR
PROTOPLANETARY DISK
R=18.4, I=17.16, J=15.93, H=14.78, K=13.98
2MASSJ16281370-2431391
FLYING-SAUCER
J2000
16 28 13.7000
-24 31 39.00
J2000
NIC2
Imaging
No
No
F110W
NIC2
Imaging
No
No
F160W
NIC2
Imaging
No
No
F205W
ACS/WFC
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F555W
NIC2
Imaging
No
No
F110W
NIC2
Imaging
No
No
F160W
NIC2
Imaging
No
No
F205W
NIC2
Imaging
No
No
F110W
NIC2
Imaging
No
No
F160W
NIC2
Imaging
No
No
F205W
NIC2
Imaging
No
No
F110W
NIC2
Imaging
No
No
F160W
NIC2
Imaging
No
No
F205W
NIC2
Imaging
No
No
F110W
NIC2
Imaging
No
No
F160W
NIC2
Imaging
No
No
F205W
ACS/WFC
Imaging
No
No
F814W
ACS/WFC
Imaging
No
No
F555W
NIC2
Imaging
No
No
F110W
NIC2
Imaging
No
No
F160W
NIC2
Imaging
No
No
F205W
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Imaging
No
No
F555W
ACS/WFC
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No
No
F814W
NIC2
Imaging
No
No
F110W
NIC2
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No
No
F160W
NIC2
Imaging
No
No
F205W
NIC2
Imaging
No
No
F110W
NIC2
Imaging
No
No
F160W
NIC2
Imaging
No
No
F205W
ACS/WFC
Imaging
No
No
F814W
NIC2
Imaging
No
No
F110W
NIC2
Imaging
No
No
F160W
NIC2
Imaging
No
No
F205W
ACS/WFC
Imaging
No
No
F814W
ACS/WFC
Imaging
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No
F555W
ACS/WFC
Imaging
No
No
F814W
NIC2
Imaging
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No
F110W
NIC2
Imaging
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No
F160W
NIC2
Imaging
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No
F205W
NIC2
Imaging
No
No
F110W
NIC2
Imaging
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No
F160W
NIC2
Imaging
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F160W
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F205W
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F555W
ACS/WFC
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F814W
NIC2
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No
F110W
NIC2
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No
F160W
NIC2
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No
No
F205W
ACS/WFC
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F555W
ACS/WFC
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No
No
F814W
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F110W
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F160W
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F205W
NIC2
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F110W
NIC2
Imaging
No
No
F160W
NIC2
Imaging
No
No
F205W
ACS/WFC
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No
No
F555W
POS-TARG
DITHER
DITHER
0.75
NIC-XSTRIP-DITH
false
false
2
0
POS-TARG
NIC-SPIRAL-DITH
0
1
false
POS-TARG
DITHER
DITHER
1.13
NIC-XSTRIP-DITH
false
false
3
0
POS-TARG
NIC-SPIRAL-DITH
0
2
false
POS-TARG
DITHER
DITHER
1.13
NIC-XSTRIP-DITH
false
false
4
0
POS-TARG
NIC-SPIRAL-DITH
0
3
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