SPECTROSCOPY AND PHOTOMETRY FOR LOW-MASS STARS IN PRAESEPE

Authors
WILLIAMS SD STAUFFER JR PROSSER CF HERTER T
Citation
Sd. Williams et al., SPECTROSCOPY AND PHOTOMETRY FOR LOW-MASS STARS IN PRAESEPE, Publications of the Astronomical Society of the Pacific, 106(702), 1994, pp. 817-821
Citations number
21
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Publications of the Astronomical Society of the Pacific
ISSN journal
00046280 → ACNP
Volume
106
Issue
702
Year of publication
1994
Pages
817 - 821
Database
ISI
SICI code
0004-6280(1994)106:702<817:SAPFLS>2.0.ZU;2-T
Abstract
We have obtained spectral types, Halpha equivalent widths, and optical photometry for a small sample of late K and M dwarf candidate members of the Praesepe open cluster. At least for the small sample of stars we have observed, all of the Praesepe members later than M2 have Halph a in emission. The chromospheric activity of the Praesepe stars is ess entially the same as that for Hyades members of the same mass, as expe cted since the two clusters are thought to be the same age.