2009MNRAS.394L..93M


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.05CEST07:22:33

2009MNRAS.394L..93M - Mon. Not. R. Astron. Soc., 394, L93-L96 (2009/March-3)

On the various origins of close-in extrasolar planets.

MARCHI S., ORTOLANI S., NAGASAWA M. and IDA S.

Abstract (from CDS):

The extrasolar planets (EPs) so far detected are very different to the planets in our own Solar System. Many of them have Jupiter-like masses and close-in orbits (the so-called hot planets, HPs), with orbital periods of only a few days. In this Letter, we present a new statistical analysis of the observed EPs, focusing on the origin of the HPs. Among the several HP formation mechanisms proposed so far, the two main formation mechanisms are type II migration and scattering. In both cases, planets form beyond the so-called snow line of the protoplanetary disc and then migrate inwards due to angular momentum and energy exchange with either the protoplanetary disc or companion planets. Although theoretical studies produce a range of observed features, no firm correspondence between the observed EPs and models has yet been established. In our analysis, by means of principal component analysis and hierarchical cluster analysis, we find convincing indications for the existence of two types of HPs, whose parameters reflect physical mechanisms of type II migration and scattering.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): planets and satellites: formation - planetary systems: formation - planetary systems: protoplanetary discs

Simbad objects: 12

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Number of rows : 12

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 BD+57 793b Pl 04 21 52.7044170433 +57 49 01.892074012           ~ 172 1
2 HD 41004Bb Pl 05 59 49.6473573887 -48 14 22.805780232           ~ 24 1
3 XO-4b Pl 07 21 33.1602110129 +58 16 05.111704885           ~ 50 1
4 HD 68988b Pl 08 18 22.1727278398 +61 27 38.597348068           ~ 39 1
5 HD 73256b Pl 08 36 23.0163309904 -30 02 15.441850007           ~ 39 1
6 HD 118203b Pl 13 34 02.5394311294 +53 43 42.698368523           ~ 33 1
7 BD+22 2716b Pl 14 33 06.3573673505 +21 53 40.982782397           ~ 121 1
8 HD 147506b Pl 16 20 36.3579144486 +41 02 53.109043943           ~ 212 1
9 HD 162020b Pl 17 50 38.3545681675 -40 19 06.080050505           ~ 51 1
10 CoRoT-3b Pl 19 28 13.2642482783 +00 07 18.614302248           ~ 114 1
11 BD+47 2846b Pl 19 28 59.3538131541 +47 58 10.216250846           ~ 268 1
12 BD+41 4831b Pl 23 39 05.8101319829 +42 27 57.503480354           ~ 67 1

    Equat.    Gal    SGal    Ecl

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2020.07.05-07:22:33

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