Spectra of Markaryan galaxies V

Arakelyan, M. A.; Dibai, �. A.; Есипов, В. Ф.

doi:10.1007/bf01002158

Cited by 4 publications

(3 citation statements)

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“…This relation and the FOCAS total magnitudes were used to derive R magnitudes for all of the galaxies in our list; we report these in Table 1 only to the nearest 0.1mag due to the large scatter of the fit. Denisyuk et al 1976;(5) Arakelyan et al 1972;(6) Giovanelli & Haynes 1981;(7) Giovanelli & Haynes 1985;(8) Freudling et al 1991;(9) Giovanardi & Salpeter 1985(10) Schneider et al 1990(11) Mould et al 1993;(12) Bird et al 1993;(13) Tarenghi et al 1979;(14) Lipovetskii & Stepanyan 1986(15) Ulrich 1976(16) Huchra et al 1983;(17) White et al 1983;(18) Zabludoff et al 1990;(19) Zabludoff et al 1993a;(20) Schommer et al 1981;(21) Rood 1981 (22) Hopp et al 1995;(23) Dressler & Shectman 1988;(24) Palumbo et al 1983;(25) Huchtmeier & Richter 1989;(26) Strauss et al 1992;(27) Lawrence et al 1997;(28) Scodeggio & Gavazzi 1993;(29) Bothun et al 1985;(30) …”

Section: A2 Focasmentioning

confidence: 99%

Kinematics of the Hercules Supercluster

Barmby

Huchra

1998

The Astronomical Journal

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The Hercules Supercluster consists of the Abell clusters 2147, 2151, and 2152. Previous studies of the kinematics have been confounded by the difficulty of correctly assigning galaxies to the individual clusters, which are not well-separated. Our study has a total of 468 available velocities for galaxies in the region, 175 of them new. 414 galaxies are in the supercluster, about three times the number used in the previous supercluster study. We verify the existence of the three individual clusters and compute their individual dynamical parameters. We investigate several techniques for assigning galaxy membership to clusters in this crowded field. We use the KMM mixture-modeling algorithm to separate the galaxies into clusters; we find that A2152 has a higher mean velocity than previous studies have reported. A2147 and A2152 also have lower velocity dispersions: 821(+68)(-55) and 715(+81)(-61) km/s. The assignment of galaxies to either A2152 or A2147 requires velocity and position information. We study the kinematics of the supercluster using the two-body formalism of Beers, Geller, and Huchra (1982) and conclude that A2147 and A2151 are probably bound to each other, and that the supercluster as a whole may also be bound. The mass of the supercluster, if bound, is $(7.6\pm2.0)\times 10^{15} h^{-1} M_{\sun}$; with the supercluster luminosity, $(1.4\pm0.2) \times 10^{13} h^{-2} L_{\sun}$, this yields Omega = 0.34\pm0.1$.Comment: 61 pages, 14 figures, accepted to A

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Section: A2 Focasmentioning

confidence: 99%

Kinematics of the Hercules Supercluster

Barmby

Huchra

1998

The Astronomical Journal

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“…( 14) , (15) This E g is promising to absorb solar energy and produce electron-hole (e -h + ) pair which eventually converts H + to H 2 and/ or H 2 O to O 2 . (16) We have used Pt as a co-catalyst on Ag 3 SbS 3 film on fluorine-doped tin oxide (FTO) plate to study the effect of catalyst on H + reduction in acidic solution.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Preliminary Photoelectrochemical Study of Silver Antimony Sulfide Semiconductor

et al. 2014

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Silver antimony sulfide (Ag 3 SbS 3 ) has been synthesized in a solid state route from silver, antimony and sulfur powder precursors in sealed tube under an argon atmosphere and with a customized temperature program. The product was characterized by powder Xray diffraction (XRD) and found to be pyrargyrite, Ag 3 SbS 3 with a small band gap (E g ) of 2.0 eV and we investigated its ability to absorb solar energy and produce electron-hole (e -h + ) pairs for water splitting. We report a photoelectrochemical study with films on fluorine-doped tin oxide (FTO) substrate and with bulk solid electrodes prepared from pieces of pyrargyrite grown. The response from the solid electrodes was significantly different from the photocurrent observed from the films.

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“…A faint nucleus 17.5-18 m observed on the spectrograph slit at the 6-m prime focus. Emission lines had not previously been found [5,6].…”

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confidence: 97%