Rotational velocities of newly discovered, low-mass members of the Alpha Persei cluster
1989; IOP Publishing; Volume: 346; Linguagem: Inglês
10.1086/167996
ISSN1538-4357
AutoresJ. R. Stauffer, Lee Hartmann, B. F. Jones,
Tópico(s)Astrophysics and Star Formation Studies
Resumoview Abstract Citations (95) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Rotational Velocities of Newly Discovered, Low-Mass Members of the Alpha Persei Cluster Stauffer, John R. ; Hartmann, Lee W. ; Jones, Burton F. Abstract About 30 new, low-mass members of the young open cluster Alpha Persei are identified via a proper-motion study and subsequent photometric and spectroscopic observations. Membership in the cluster is confirmed for a number of the fainter proper-motion candidates from Heckman, Dieckvoss, and Kox (1956). Coordinates, finding charts, BVRI photometry, and rotational velocities are provided for most of the stars. At least two of the stars show peculiar H-alpha emission profiles, with weak but very broad emission wings, and relatively narrow absorption reversals. The rotational velocity distribution for low-mass stars in the Alpha Per cluster are compared with recently derived rotational velocity distributions for T Tauri stars, placing strong constraints on the mechanisms for angular momentum loss during pre-main-sequence evolution. Publication: The Astrophysical Journal Pub Date: November 1989 DOI: 10.1086/167996 Bibcode: 1989ApJ...346..160S Keywords: Angular Velocity; Open Clusters; Pre-Main Sequence Stars; Stellar Rotation; Stellar Spectrophotometry; Absorption Spectra; Color-Color Diagram; Echelle Gratings; H Alpha Line; Light Curve; Stellar Mass; Velocity Distribution; Astrophysics; CLUSTERS: OPEN; PHOTOMETRY; STARS: PRE--MAIN-SEQUENCE; STARS: ROTATION full text sources ADS | data products SIMBAD (34) GCPD (1)
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