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: |
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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 | ||||||||||||||||
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URI: | http://kups.ub.uni-koeln.de/id/eprint/68116 |
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