Circumstellar material associated with solar-type pre-main-sequence stars - A possible constraint on the timescale for planet building

Journal Article · Mon May 01 04:00:00 EDT 1989 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/115085· OSTI ID:5813093

Strom, K M; Strom, S E; Edwards, S; Cabrit, S; Skrutskie, M F

The observed frequency distribution of near-IR excesses for a sample of 83 stars in the Taurus-Auriga star-forming complex is used to provide an estimate of the number of solar-type premain-sequence (PMS) stars surrounded by circumstellar disks. The results suggest that if all such PMS stars are initially surrounded by disks, then disk lifetimes must range from much less than 3 x 10 to the 6th yr to about 10 to the 7th yr, providing a constraint on the time available for planet building. PMS stars with small near-IR excesses, but significant mid-IR and far-IR excesses, provide some evidence for changes in disk structure with time. 55 refs.

• Research Organization: Massachusetts Univ., Amherst (USA)
• OSTI ID: 5813093
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 97; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCRETION DISKS
BALMER LINES
CONSTRAINTS
ENERGY SPECTRA
ERUPTIVE VARIABLE STARS
INFRARED SPECTRA
LIFETIME
MAIN SEQUENCE STARS
PLANETARY EVOLUTION
SOLAR SYSTEM EVOLUTION
SPECTRA
SPECTROPHOTOMETRY
STAR EVOLUTION
STARS
T TAURI STARS
VARIABLE STARS