Further Bright Peculiar A Stars

Cowley, A. P.; Cowley, C. R.; Hiltner, W. A.; Jaschek, M.; Jaschek, C.

doi:10.1086/128719

Cited by 21 publications

(28 citation statements)

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“…The v, b, and y light curves show similar effects. Cowley et al (1968) classified 36 Aur (ϭHR 2101 ϭ HD 40394) as a B9.5p Si, Fe star. Optical spectrophotometry (Adelman & Pyper 1983) indicates only mild peculiarities with weak l4200 and l5200 broad, continuum features.…”

Section: Hr 1297mentioning

confidence: 99%

uvbyPhotometry of the Magnetic Chemically Peculiar Stars HR 1297, 36 Aurigae, and HR 2722 and the Nonmagnetic Chemically Peculiar Stars HR 1576 and α Cancri

Adelman

Brunhouse²

1998

PUBL ASTRON SOC PAC

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ABSTRACT. Differential Strömgren uvby photometric observations from the Four College Automated Photoelectric Telescope are presented for the magnetic CP stars HR 1297, 36 Aur, and HR 2722 and the nonmagnetic CP stars HR 1576 and a Cnc. Both the moderately rotating HR 1576, a mercury-manganese star, and a Cnc, a metallic-line star, are nonvariable. For HR 1297 we refined Winzer's period to 1.06457 days. Our period of 14.366 days for 36 Aur is an alias of Winzer's period and is in keeping with the sharp-lined nature of this star. We found a more accurate period of 2.31523 days for the low-amplitude variable HR 2722.

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Section: Hr 1297mentioning

confidence: 99%

uvbyPhotometry of the Magnetic Chemically Peculiar Stars HR 1297, 36 Aurigae, and HR 2722 and the Nonmagnetic Chemically Peculiar Stars HR 1576 and α Cancri

Adelman

Brunhouse²

1998

PUBL ASTRON SOC PAC

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“…(5), (6), (22), (23) S 165 (8) (Bappu, 1973). Independently discovered by Dolidze (1959) and Stephenson (1966).…”

Section: Lss/lsmentioning

confidence: 99%

The Sixth Catalogue of galactic Wolf-Rayet stars, their past and present

Hucht

Conti

Lundström³

et al. 1981

Space Sci Rev

313

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“…HD 161701 (=HR 6620) has been classified as a HgMn binary star. The presence of the Hg ii line at 3984 Å in this star was detected by Cowley et al (1968), who classified it as Bp with the presence of Hg and Si, and later as B9p HgMn (Cowley et al 1969). Shortly after this, HD 161701 was reported as a single-lined spectroscopic binary by Hube (1969), A&A 561, A63 (2014) Fig.…”

Section: Introductionmentioning

confidence: 88%

HD 161701, a chemically peculiar binary with a HgMn primary and an Ap secondary

González

Saffe

Castelli

et al. 2013

A&A

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Context. In recent years, HgMn stars have attracted attention after in several of them surface chemical spots of different elements were discovered, whose origin and possible connection with binarity and magnetic fields is not clear yet. Aims. We perform a complete study of the HgMn binary HD 161701, including the determination of physical parameters and photospheric chemical abundances. Methods. We analyzed time series of high-resolution spectroscopic observations obtained with ESO's spectrograph FEROS and the spectro-polarimeter HARPS, in addition to a near-IR spectrum obtained with CRIRES. Radial velocity curves for both stars were combined with additional spectroscopic information to estimate absolute stellar parameters. A spectral separation technique was applied, which enabled us to conduct a detailed spectral analysis of both the HgMn primary and the low-luminosity secondary component, which turned out to be a peculiar star as well. Chemical abundances were determined by spectral synthesis. Using HARPS and FEROS spectra obtained at 11 rotational phases, we detected line profile variations in both stellar companions, indicating a nonuniform surface distribution of chemical composition.

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Further Bright Peculiar A Stars

Abstract: The completion of the observation and reclassification of the A stars in the Bright Star Catalogue (see Cowley 1968) has lead to the recognition of additional new peculiar and metallic-line A stars. These stars are listed in Table I with their new classifications.

Cited by 21 publications

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uvbyPhotometry of the Magnetic Chemically Peculiar Stars HR 1297, 36 Aurigae, and HR 2722 and the Nonmagnetic Chemically Peculiar Stars HR 1576 and α Cancri

uvbyPhotometry of the Magnetic Chemically Peculiar Stars HR 1297, 36 Aurigae, and HR 2722 and the Nonmagnetic Chemically Peculiar Stars HR 1576 and α Cancri

The Sixth Catalogue of galactic Wolf-Rayet stars, their past and present

HD 161701, a chemically peculiar binary with a HgMn primary and an Ap secondary

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