Small-Amplitude Red Variables in the AAVSO Photoelectric Program: Light Curves and Periods
Small-amplitude red variables (SARVs) are M giants or supergiants which are pulsating with small amplitudes (up to 2.5 mag) and with time scales of 20-200 days or more. This paper reports on a 10-yr study of about two dozen SARVs, carried out through the American Association of Variable Star Observe...
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| Veröffentlicht in: | Publications of the Astronomical Society of the Pacific 1996-02, Vol.108 (720), p.139-145 |
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| creator | Percy, John R. Desjardins, Adrien Yu, Lawrence Landis, Howard J. |
| description | Small-amplitude red variables (SARVs) are M giants or supergiants which are pulsating with small amplitudes (up to 2.5 mag) and with time scales of 20-200 days or more. This paper reports on a 10-yr study of about two dozen SARVs, carried out through the American Association of Variable Star Observers (AAVSO) photoelectric photometry program. It has provided detailed information on the regularity, period, and amplitude of these stars. Most have well-defined periods in the 20-200 day range.Several also have a long secondary period. One (W Boo) appears to have two periods with a ratio of 2.3. |
| doi_str_mv | 10.1086/133703 |
| format | Article |
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This paper reports on a 10-yr study of about two dozen SARVs, carried out through the American Association of Variable Star Observers (AAVSO) photoelectric photometry program. It has provided detailed information on the regularity, period, and amplitude of these stars. Most have well-defined periods in the 20-200 day range.Several also have a long secondary period. 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This paper reports on a 10-yr study of about two dozen SARVs, carried out through the American Association of Variable Star Observers (AAVSO) photoelectric photometry program. It has provided detailed information on the regularity, period, and amplitude of these stars. Most have well-defined periods in the 20-200 day range.Several also have a long secondary period. One (W Boo) appears to have two periods with a ratio of 2.3.</abstract><pub>American Institute of Physics</pub><doi>10.1086/133703</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| source | Jstor Complete Legacy; Institute of Physics Journals; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | Astronomical magnitude Astronomical photometry Autocorrelation Light curves Mathematical minima Stars Supergiant stars Variable stars Visible spectrum Weak minimum |
| title | Small-Amplitude Red Variables in the AAVSO Photoelectric Program: Light Curves and Periods |
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