Luminosity excesses in low-mass young stellar objects - a statistical study

Journal Article · Mon Feb 01 04:00:00 EST 1988 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/114653· OSTI ID:5237075

Strom, K M; Strom, S E; Kenyon, S J; Hartmann, L

This paper presents a statistical study in which the observed total luminosity is compared quantitatively with an estimate of the stellar luminosity for a sample of 59 low-mass young stellar objects (YSOs) in the Taurus-Auriga complex. In 13 of the analyzed YSOs, luminosity excesses greater than 0.20 are observed together with greater than 0.6 IR excesses, which typically contribute the bulk of the observed excess luminosity and are characterized by spectral energy distributions which are flat or rise toward long wavelengths. The analysis suggests that YSOs showing the largest luminosity excesses typically power optical jets and/or molecular outflows or have strong winds, as evidenced by the presence of O I emission, indicating a possible correlation between accretion and mass-outflow properties. 38 references.

• Research Organization: Massachusetts Univ., Amherst (USA); Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (USA)
• OSTI ID: 5237075
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 95; 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
ERUPTIVE VARIABLE STARS
INFRARED SPECTRA
LUMINOSITY
MASS TRANSFER
MATHEMATICS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLASMA JETS
PROTOSTARS
SPECTRA
STAR ACCRETION
STAR EVOLUTION
STARS
STATISTICS
STELLAR ACTIVITY
STELLAR WINDS
T TAURI STARS
VARIABLE STARS