2010ApJ...717L..57M


Query : 2010ApJ...717L..57M

2010ApJ...717L..57M - Astrophys. J., 717, L57-L61 (2010/July-1)

The age of the HD 15407 system and the epoch of final catastrophic mass accretion onto terrestrial planets around Sun-like stars.

MELIS C., ZUCKERMAN B., RHEE J.H. and SONG I.

Abstract (from CDS):

From optical spectroscopic measurements we determine that the HD 15407 binary system is ∼80 Myr old. The primary star, HD 15407A (spectral type F5 V), exhibits strong mid-infrared excess emission indicative of a recent catastrophic collision between rocky planetary embryos or planets in its inner planetary system. The synthesis of all known stars with large quantities of dust in their terrestrial planet zone indicates that for stars of roughly solar mass this warm dust phenomenon occurs at ages between 30 and 100 Myr. In contrast, for stars of a few solar masses, the dominant era of the final assembling of rocky planets occurs earlier, between 10 and 30 Myr age. The incidence of the warm dust phenomenon, when compared against models for the formation of rocky terrestrial-like bodies, implies that rocky planet formation in the terrestrial planet zone around Sun-like stars is common.

Abstract Copyright:

Journal keyword(s): circumstellar matter - infrared: planetary systems - planets and satellites: formation - stars: individual (HD 15407A, HD15407B) - stars: kinematics and dynamics

Simbad objects: 19

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Number of rows : 19
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 BD+20 307 SB* 01 54 50.3440413288 +21 18 22.461011784   9.57 9.01     G0 101 0
2 HD 15407B PM* 02 30 48.5961276552 +55 33 06.378657516   10.56 9.66 9.56   K2V 15 0
3 HD 15407 PM* 02 30 50.6559832920 +55 32 54.256925724   7.43 6.95     F5V 74 0
4 Cl Melotte 22 OpC 03 46 24 +24 06.8           ~ 3260 0
5 HD 23514 * 03 46 38.3922026460 +22 55 11.199934340 9.95 9.93 9.43 8.96 8.84 F5V 122 0
6 Cl Melotte 25 OpC 04 29 47 +16 56.9           ~ 2911 0
7 NGC 2232 OpC 06 27 33 -04 44.9           ~ 162 0
8 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 438 0
9 Cl* NGC 2422 PMS 1121 * 07 35 42.6918901416 -14 50 42.249024672 13.344 13.262 12.668 12.335 11.981 F9 15 0
10 NGC 2422 OpC 07 36 35 -14 29.3           ~ 233 0
11 2MASS J08090250-4858172 Y*O 08 09 02.5063872816 -48 58 17.289559668     13.13 12.73 12.32 G6-G7 31 0
12 NGC 2547 OpC 08 09 52.360 -49 10 35.01           ~ 372 0
13 NGC 2632 OpC 08 40 13 +19 37.3           ~ 1434 0
14 IC 2391 OpC 08 41 10 -52 59.5           ~ 787 0
15 NAME UMa Region reg 11 00 +50.0           ~ 322 0
16 V* EF Cha dS* 12 07 05.5212746160 -78 44 28.014866520   7.74 7.46     A9III/IV 46 0
17 HD 113766 ** 13 06 35.83622 -46 02 02.0178   7.91 7.56     F3/5V 100 1
18 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 13333 0
19 HD 172555 PM* 18 45 26.9009806435 -64 52 16.534807985   4.967 4.767     A7V 261 0

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2022.12.08-12:49:53

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