Universität zu Köln

Pfalzner, Susanne ORCID: 0000-0002-5003-4714, Dehghani, Shahrzad and Michel, Arnaud ORCID: 0000-0003-4099-9026 (2022). Most Planets Might Have More than 5 Myr of Time to Form. Astrophys. J. Lett., 939 (1). BRISTOL: IOP Publishing Ltd. ISSN 2041-8213

Full text not available from this repository.

Abstract

The lifetime of protoplanetary disks is a crucial parameter for planet formation research. Observations of disk fractions in star clusters imply median disk lifetimes of 1-3 Myr. This very short disk lifetime calls for planet formation to occur extremely rapidly. We show that young, distant clusters (<= 5 Myr, >200 pc) often dominate these types of studies. Such clusters frequently suffer from limiting magnitudes leading to an over-representation of high-mass stars. As high-mass stars disperse their disks earlier, the derived disk lifetimes apply best to high-mass stars rather than low-mass stars. Including only nearby clusters (<200 pc) minimizes the effect of limiting magnitude. In this case, the median disk lifetime of low-mass stars is with 5-10 Myr, thus much longer than often claimed. The longer timescales provide planets ample time to form. How high-mass stars form planets so much faster than low-mass stars is the next grand challenges.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Pfalzner, Susanne UNSPECIFIED orcid.org/0000-0002-5003-4714 UNSPECIFIED Dehghani, Shahrzad UNSPECIFIED UNSPECIFIED UNSPECIFIED Michel, Arnaud UNSPECIFIED orcid.org/0000-0003-4099-9026 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-681165
DOI:	10.3847/2041-8213/ac9839
Journal or Publication Title:	Astrophys. J. Lett.
Volume:	939
Number:	1
Date:	2022
Publisher:	IOP Publishing Ltd
Place of Publication:	BRISTOL
ISSN:	2041-8213
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language YOUNG CLUSTER; SPITZER VIEW; EVOLUTION; DISKS; DISCS; DIVERSITY; ACCRETION; LIFETIMES; DENSITY; STARS Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/68116