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| Query : 2008A&A...483L...9V |
2008A&A...483L...9V - Astronomy and Astrophysics, volume 483, L9-12 (2008/5-3)
Is the silicate emission feature only influenced by grain size?
VOSHCHINNIKOV N.V. and HENNING T.
Abstract (from CDS):
The flattening of the 10µm silicate emission feature observed in the spectra of T Tauri and Herbig Ae/Be stars is usually interpreted as an indicator of grain growth. We show in this paper that a similar behaviour of the feature shape occurs when the porosity of composite grains varies. We modelled the fluffy aggregates with inclusions of different sizes with multi-layered spheres consisting of amorphous carbon, amorphous silicate, and vacuum. We also found that the inclusion of crystalline silicates in composite porous particles can lead to a shift of the known resonances and production of new ones.
Abstract Copyright: ∼
Journal keyword(s): line: profiles - stars: pre-main-sequence - stars: planetary systems: protoplanetary disks - stars: circumstellar matter - infrared: stars - ISM: dust, extinction
CDS comments: Table 1 star Tr 37 01-580 is a misprint for [SHB2004] NGC 7160 01-580.
Simbad objects: 49
| Number of rows : 49 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2024 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | V* FM Tau | Or* | 04 14 13.5841955640 | +28 12 49.168982592 | 14.44 | 13.80 | 13.64 | M0/2e | 216 | 0 | ||
| 2 | 2MASS J04181710+2828419 | TT* | 04 18 17.1069408984 | +28 28 41.928528396 | 22.175 | M6.4 | 86 | 0 | ||||
| 3 | V* IP Tau | Or* | 04 24 57.0824018640 | +27 11 56.539953888 | 14.50 | 12.46 | M0:Ve | 232 | 0 | |||
| 4 | [RRN96] GG Tau B | Y*? | 04 32 30.2766917736 | +17 31 30.449809020 | M6 | 49 | 1 | |||||
| 5 | V* GG Tau | Or* | 04 32 30.3506925552 | +17 31 40.494063144 | 14.84 | 14.78 | 13.40 | 11.54 | M0e+M2.0e | 736 | 1 | |
| 6 | V* GM Aur | Or* | 04 55 10.9815576936 | +30 21 59.373771876 | 14.59 | 13.351 | 12.242 | 11.798 | K3Ve | 689 | 0 | |
| 7 | V* AB Aur | Ae* | 04 55 45.8458932216 | +30 33 04.292077032 | 7.20 | 7.16 | 7.05 | 6.96 | 6.70 | A0Ve | 1067 | 2 |
| 8 | V* SU Aur | Or* | 04 55 59.3866872552 | +30 34 01.499608092 | 10.33 | 9.30 | 9.17 | G2IIIne | 591 | 0 | ||
| 9 | V* UX Ori | Ae* | 05 04 29.9878898040 | -03 47 14.286732072 | 10.25 | 10.93 | 8.70 | 9.62 | 9.43 | A4IVe | 363 | 1 |
| 10 | V* GW Ori | Or* | 05 29 08.3928710640 | +11 52 12.666457092 | 10.83 | 10.10 | 9.52 | G5/8Ve | 351 | 0 | ||
| 11 | HD 36112 | Ae* | 05 30 27.5285630040 | +25 19 57.076288752 | 8.57 | 8.27 | A8Ve | 469 | 0 | |||
| 12 | V* HK Ori | Ae* | 05 31 28.049808 | +12 09 10.30212 | 11.82 | 12.235 | 11.716 | 11.632 | 10.56 | A2?e+G0?e | 193 | 1 |
| 13 | HD 245185 | Ae* | 05 35 09.6034684104 | +10 01 51.465413208 | 10.05 | 10.07 | 9.93 | A0Vae | 127 | 0 | ||
| 14 | BD-06 1253 | Ae* | 05 36 25.4320468080 | -06 42 57.684730284 | 11.65 | 10.9 | 10.29 | A1e | 435 | 1 | ||
| 15 | HD 37357 | Ae* | 05 37 47.0794735560 | -06 42 30.209473224 | 8.96 | 8.85 | A3VankA1 | 109 | 0 | |||
| 16 | HD 37806 | Be* | 05 41 02.2930798296 | -02 43 00.731764812 | 7.67 | 7.93 | 7.90 | B9/9.5II/III | 160 | 0 | ||
| 17 | Hen 3-545 | Or* | 10 59 06.9715593000 | -77 01 40.309233240 | 12.91 | 11.136 | 9.596 | K4Ve | 216 | 0 | ||
| 18 | V* TW Hya | TT* | 11 01 51.9053285064 | -34 42 17.033218380 | 11.94 | 10.50 | 10.626 | 9.18 | K6Ve | 1892 | 1 | |
| 19 | V* HP Cha | TT* | 11 08 15.216432 | -77 33 53.17020 | 14.33 | 12.77 | 12.11 | K3+G5e | 114 | 0 | ||
| 20 | V* HP Cha A | * | 11 08 15.4974157248 | -77 33 53.446498956 | K6e | 85 | 0 | |||||
| 21 | V* WW Cha | Or* | 11 10 00.0802739160 | -76 34 57.963853416 | 14.74 | 14.10 | 10.95 | ~ | 154 | 0 | ||
| 22 | TWA 3 | ** | 11 10 27.894072 | -37 31 51.96612 | 13.53 | 12.05 | 11.61 | 9.29 | M4Ve+M4Ve | 211 | 0 | |
| 23 | TWA 3A | TT* | 11 10 27.9121410480 | -37 31 51.535547940 | 14.04 | 12.57 | 9.10 | M4Ve | 209 | 0 | ||
| 24 | V* DX Cha | Ae* | 12 00 05.0868602544 | -78 11 34.565724312 | 6.81 | 6.60 | A4V | 344 | 0 | |||
| 25 | THA 15-12 | Or* | 15 56 09.2066646912 | -37 56 06.126118692 | 13.12 | 11.93 | 11.45 | M0e | 421 | 0 | ||
| 26 | HD 142666 | TT* | 15 56 40.0221861696 | -22 01 40.005872148 | 9.41 | 9.37 | 8.82 | 8.31 | 8.01 | F0V_sh | 269 | 0 |
| 27 | HD 142527 | Ae* | 15 56 41.8882637904 | -42 19 23.248281828 | 9.04 | 8.34 | F6III | 642 | 1 | |||
| 28 | HD 144432 | Ae* | 16 06 57.9533126832 | -27 43 09.760564056 | 8.47 | 8.53 | 8.19 | 7.82 | 7.53 | A9/F0V | 245 | 1 |
| 29 | V* V856 Sco | Ae* | 16 08 34.2870044544 | -39 06 18.325711332 | 7.66 | 7.41 | 7.05 | 6.92 | A9V_sh | 388 | 0 | |
| 30 | V* V866 Sco | Or* | 16 11 31.345632 | -18 38 25.96200 | 13.98 | 12.63 | 12.81 | K0e+K5e | 281 | 0 | ||
| 31 | Haro 1-16 | Or* | 16 31 33.4634997336 | -24 27 37.158728076 | 14.02 | 12.80 | K3e | 224 | 0 | |||
| 32 | HD 150193 | Ae* | 16 40 17.9243127240 | -23 53 45.193372692 | 9.69 | 9.32 | 8.79 | 8.41 | A3Va(e) | 321 | 0 | |
| 33 | V* AK Sco | Ae* | 16 54 44.8491575376 | -36 53 18.566586456 | 9.80 | 9.63 | 9.00 | F5V | 274 | 1 | ||
| 34 | HD 163296 | Ae* | 17 56 21.2881851168 | -21 57 21.871819008 | 7.00 | 6.93 | 6.85 | 6.86 | 6.67 | A3VaekA1mA1 | 1111 | 0 |
| 35 | HD 179218 | Ae* | 19 11 11.2538919456 | +15 47 15.636008472 | 7.55 | 7.476 | 7.39 | 7.25 | 7.21 | A0Ve | 255 | 0 |
| 36 | [SHB2004] Trumpler 37 73-758 | TT* | 21 35 08.3759832216 | +57 36 02.691484740 | 17.06 | 15.85 | 14.76 | K6.5 | 8 | 0 | ||
| 37 | [MSR2009] IC1396A-38 | TT* | 21 36 57.6721143408 | +57 27 33.140300940 | 18.684 | 16.92 | 15.211 | 13.999 | K6 | 21 | 0 | |
| 38 | [SHB2004] Trumpler 37 11-2037 | TT* | 21 37 07.0355466816 | +57 27 00.832158108 | 18.871 | 16.03 | 15.09 | 13.687 | K4.5 | 19 | 0 | |
| 39 | 2MASS J21371591+5726591 | TT* | 21 37 15.9198472632 | +57 26 59.224079616 | 18.328 | 15.48 | 14.240 | 13.345 | K2 | 17 | 0 | |
| 40 | [SHB2004] Trumpler 37 14-183 | Y*O | 21 37 38.5106073936 | +57 31 40.850378472 | 19.838 | 16.61 | 15.648 | 14.431 | K7.0(K5) | 15 | 0 | |
| 41 | 2MASS J21380350+5741349 | TT* | 21 38 03.5014015944 | +57 41 34.927818108 | 19.414 | 16.616 | 15.266 | 14.019 | G9 | 16 | 0 | |
| 42 | [SHB2004] Trumpler 37 12-2113 | TT* | 21 38 27.4440026385 | +57 27 20.637220350 | 18.79 | 17.14 | 16.019 | 14.67 | K6 | 14 | 0 | |
| 43 | 2MASS J21382804+5730464 | TT* | 21 38 28.0689027312 | +57 30 46.385959608 | 18.588 | 16.768 | 15.320 | 14.012 | K5.5 | 12 | 0 | |
| 44 | 2MASS J21383470+5741274 | TT* | 21 38 34.7174096016 | +57 41 27.416989464 | 18.31 | 16.94 | 15.52 | M2.5 | 8 | 0 | ||
| 45 | 2MASS J21384446+5718091 | TT* | 21 38 44.4751678176 | +57 18 09.091587744 | 18.539 | 16.571 | 15.299 | 14.437 | K5.5 | 17 | 0 | |
| 46 | 2MASS J21391213+5736164 | TT* | 21 39 12.1416997248 | +57 36 16.396038576 | 18.403 | 15.956 | 15.09 | 13.668 | K4.5 | 16 | 0 | |
| 47 | 2MASS J21404450+5731314 | TT* | 21 40 44.4981171312 | +57 31 31.452319380 | 17.97 | 16.71 | 15.69 | K7 | 14 | 0 | ||
| 48 | 2MASS J21522113+6245034 | Y*O | 21 52 21.1347154584 | +62 45 03.445002576 | 14.31 | 13.89 | 13.22 | A7 | 8 | 0 | ||
| 49 | 2MASS J21533707+6228469 | Y*O | 21 53 37.0541006256 | +62 28 46.918673904 | 18.38 | 17.392 | 15.755 | 15.05 | K4.5 | 12 | 0 |
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