ROTATIONAL VELOCITY DETERMINATIONS FOR 118 δ SCUTI VARIABLES

ROTATIONAL VELOCITY DETERMINATIONS FOR 118 δ SCUTI VARIABLES
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118 δ SCUTI 变量的旋转速度测定

DOI:
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发表时间:
2008
期刊:
影响因子:
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通讯作者:
E. Hintz
E. Hintz
中科院分区:
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文献类型:
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作者:
Tabitha C. Bush;E. Hintz

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提出了一种校准方法,用于确定金属线在4500 Å附近的FWHM测量中118个δ Scuti变量的投影转速。所使用的校准关系来源于对29颗恒星的测量。在44颗亮度超过8等、赤纬- 1°以北但在Rodríguez星表中没有值的恒星中(Rodríguez, E., López González, M. J., & López de Coca, P. 2000, A&AS, 144, 469),我们给出了38颗的值。此外,我们还提供了10颗小于- 1°或小于8等的恒星的新的投影转速vsin i值,总共有48颗以前没有公布过的恒星的vsin i值。
A calibration method is presented for the determination of projected rotational velocities of 118 δ Scuti variables from FWHM measurements of metal lines near 4500 Å. The calibration relation used was derived from measurements of 29 stars. Of the 44 stars brighter than 8th magnitude and north of −1° declination which did not have values in the Rodríguez catalog (Rodríguez, E., López González, M. J., & López de Coca, P. 2000, A&AS, 144, 469) we present values for 38. In addition, we present new projected rotational velocity, vsin i, values for 10 stars south of −1° or fainter than 8th magnitude for a total of 48 vsin i values for stars with no previously published values.