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| Query : 2013ApJ...778...12M |
2013ApJ...778...12M - Astrophys. J., 778, 12 (2013/November-3)
Copious amounts of hot and cold dust orbiting the main sequence a-type stars HD 131488 and HD 121191.
MELIS C., ZUCKERMAN B., RHEE J.H., SONG I., MURPHY S.J. and BESSELL M.S.
Abstract (from CDS):
We report two new dramatically dusty main sequence stars: HD 131488 (A1 V) and HD 121191 (A8 V). HD 131488 is found to have substantial amounts of dust in its terrestrial planet zone (LIR/Lbol~ 4x10–3), cooler dust farther out in its planetary system, and an unusual mid-infrared spectral feature. HD 121191 shows terrestrial planet zone dust (LIR/L bol~ 2.3x10–3), hints of cooler dust, and shares the unusual mid-infrared spectral shape identified in HD 131488. These two stars belong to sub-groups of the Scorpius-Centaurus OB association and have ages of ∼10 Myr. HD 131488 and HD 121191 are the dustiest main sequence A-type stars currently known. Early-type stars that host substantial inner planetary system dust are thus far found only within the age range of 5-20 Myr.
Abstract Copyright: ∼
Journal keyword(s): circumstellar matter - infrared: planetary systems - planets and satellites: formation - stars: individual (HD 131488, HD 121191) - stars: kinematics and dynamics
Simbad objects: 21
| Number of rows : 21 |
| 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 | BD+20 307 | SB* | 01 54 50.3440413288 | +21 18 22.461011784 | 9.57 | 9.01 | G0 | 113 | 0 | |||
| 2 | HD 15407 | PM* | 02 30 50.6559832920 | +55 32 54.256925724 | 7.43 | 6.95 | F5V | 86 | 0 | |||
| 3 | * 29 Per | Pu* | 03 18 37.7416927200 | +50 13 19.834697676 | 6.232 | 5.074 | 5.157 | B3V | 167 | 0 | ||
| 4 | V* V488 Per | BY* | 03 28 18.6829779012 | +48 39 48.191915231 | 13.83 | 12.83 | 11.95 | K0 | 60 | 0 | ||
| 5 | Cl Melotte 22 | OpC | 03 46 38.0 | +24 10 41 | ~ | 3679 | 0 | |||||
| 6 | HD 23514 | * | 03 46 38.3922026460 | +22 55 11.199934340 | 9.95 | 9.93 | 9.43 | 8.96 | 8.84 | F5V | 157 | 0 |
| 7 | V* EF Cha | dS* | 12 07 05.5212746160 | -78 44 28.014866520 | 7.74 | 7.46 | A9III/IV | 54 | 0 | |||
| 8 | ASAS J120900-5120.8 | Ro* | 12 09 02.2532918136 | -51 20 40.988644584 | 12.11 | 11.49 | 9.905 | K3IV(e) | 46 | 0 | ||
| 9 | NAME Lower Centaurus Crux | As* | 12 19 | -57.1 | ~ | 565 | 1 | |||||
| 10 | HD 113766 | ** | 13 06 35.83622 | -46 02 02.0178 | F3/5V | 112 | 0 | |||||
| 11 | HD 119193 | V* | 13 42 54.6335904000 | -50 47 24.844966620 | 8.073 | 6.410 | M0III | 34 | 0 | |||
| 12 | HD 121191 | * | 13 55 18.8785853760 | -53 31 42.712006116 | 8.40 | 8.16 | A5IV/V | 44 | 0 | |||
| 13 | * tet Cen | PM* | 14 06 40.94752 | -36 22 11.8371 | 3.94 | 3.04 | 2.05 | 1.29 | 0.76 | K0-IIIb | 262 | 1 |
| 14 | HD 130157 | * | 14 47 13.6499854233 | -21 19 29.544326147 | 7.677 | 6.034 | K4/5III | 31 | 0 | |||
| 15 | HD 130163 | * | 14 47 46.9396067376 | -39 55 35.041449648 | 6.93 | 6.92 | A1V | 38 | 0 | |||
| 16 | HD 131488 | * | 14 55 08.0288316288 | -41 07 13.401374232 | 8.09 | 8.00 | A1V | 55 | 0 | |||
| 17 | NAME Upper Centaurus Lupus | MGr | 15 24 | -41.9 | ~ | 567 | 1 | |||||
| 18 | HD 145263 | Or* | 16 10 55.1057129784 | -25 31 21.669357756 | 9.39 | 8.98 | F2V | 89 | 0 | |||
| 19 | NAME Galactic Center | reg | 17 45 39.60213 | -29 00 22.0000 | ~ | 16269 | 0 | |||||
| 20 | HD 166191 | * | 18 10 30.3388577208 | -23 34 00.266472840 | 8.86 | 8.38 | F3/5V | 41 | 0 | |||
| 21 | HD 172555 | PM* | 18 45 26.9009806435 | -64 52 16.534807985 | 4.967 | 4.767 | A7V | 321 | 0 |
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