Pulkovo compilation of radial velocities for 35495 stars in a common system.
Not Available
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Infrared spectroscopy of Nova Cassiopeiae 1993. II - Evolution of the dust
We present IR spectroscopy of the nova V705 Cas (1993), obtainedfollowing the dust formation episode. There is 'UIR' emission at 3.3,3.4, 8.2, 8.7, and 11.4 microns, and silicate emission at 9.7 microns.The UIR features are unlike those seen in most other objects displayingUIR emission, but are broadly similar to those present in the infraredspectra of the nova V842 Cen and some post-AGB stars. The 3.4/3.3 fluxratio is large compared with that usually seen in the spectra of objectsdisplaying the UIR features, and the '7.7' feature appears at 8.2microns. We determine the beta-index for nova dust for the first time;the beta-index changed over the period 1994 August 22 (day 251; beta =0.8) to 1994 October/November (day 300/341; beta = 0.3), suggesting thatgrain growth continued to occur. The grains attained dimensions of atleast 0.5 micron. We estimate that about 10 exp -8 solar mass of carbondust condensed in the ejecta. The profile of the 9.7-micron silicateemission feature was somewhat narrower than in other novae displayingthis feature, suggesting that the silicate in V705 Cas may have beenamorphous.
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Infrared spectroscopy of Nova Cassiopeiae 1993 - I. The pre-dust phase
We present infrared spectroscopy of Nova Cassiopeiae 1993 (V705 Cas) inthe period before dust formation. We find strong emission in thefirst-overtone CO bands before the nova reached maximum light - theearliest detection of a molecule in a nova. Our observations suggest thepresence of a relatively cool (<~4500 K), neutral zone in the ejecta,as required by chemical modelling of nova winds. CO formation is likelyto have been dominated by the H_2 route rather than by direct radiativeassociation of C and O. We suggest that radiative cooling of the ejectedmaterial by CO could play a major role in the grain formation process.
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Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.
We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.
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Photometry of Stars in the Field of Nova Cassiopeiae 1993
Not Available
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Nova Cassiopeiae 1993
IAUC 5905 available at Central Bureau for Astronomical Telegrams.
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The light variation of the AP star HD 221568 (Osawa's star) in then spectral regions
The intermediate longperiodic Ap star HD 221568 has been observed duringthe span from 1976 till 1981 in ten spectral regions (3450 Å -7650 Å). The star shows typical rotational double wavelightcurves. The properties of the amplitude-wavelength relation aresimilar to those of some cooler shortperiodic Ap stars. The estimatedvariation of the flux in the visible spectral region indicates expectedvariability with large amplitude in the UV spectral region.
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Lists of photometric AM candidates
The Geneva photometric m parameter (Nicolet and Cramer, 1982) is used inorder to select Am photometric candidates from the Rufener (1981)catalogue. Two lists are given, the first containing field stars and thesecond cluster stars. According to the photometric criteria thediffusion process probably responsible for the Am phenomenon takes placerather quickly as Am candidates are present in young clusters. It isconfirmed that the phenomenon is enhanced by low rotational velocity andhigh metallicity. The age seems to slightly affect the Am phenomenon.
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The absolute magnitude of the AM stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1981A&A....93..155G&db_key=AST
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Properties of AM stars in the Geneva photometric system
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980A&A....92..289H&db_key=AST
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UBVRI photometry of 225 AM stars
UBVRI photometry of 225 Am stars taken from Mendoza's (1974) catalog ispresented. The results are compared with those obtained by Feinstein(1974) for 21 of the stars and with the values of Johnson et al. (1966).It is assumed that in the first approximation the (V-I) color index ofan unreddened Am star is equal to that of a normal main-sequence star; astandard main sequence is defined for A and early F stars, and thefive-color photometry is analyzed by means of plots of U-V vs. V-I, B-Vvs. V-I, and V-R vs. V-I. Mean color deficiencies of Am stars areexamined, and it is suggested that an unreddened star located below themain-sequence A0-F2 line in the (V-I, U-V) plane is a photometric Amstar. It is concluded that: (1) photometric Am stars have colordeficiencies (as a function of V-I) which, on the average, are 0.07 magin (U-V) color index and 0.025 mag in (B-V) color index; (2) Am starswith V-R less than 0.25 mag may also have a color deficiency of about0.01 mag; (3) Am stars with V-R greater than 0.3 mag may have a colorexcess of approximately 0.01 mag; and (4) Am stars with V-R between 0.25and 0.3 mag may have normal colors.
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Multicolor photometry of metallic-line stars. III. A photometric catalogue
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974RMxAA...1..175M&db_key=AST
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Catalogue of AM stars with known spectral types
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1973A&AS...10..385H&db_key=AST
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Catalogue des étoiles mesurées dans le système photométrique de l'Observatoire de Genève
Not Available
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Catalogue et bibliographie des étoiles A à spectre particulier - Deuxième supplément
Not Available
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Catalogue et bibliographie des étoiles A à spectre particulier Premier supplément
Not Available
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Peculiar and Metallic-Line a - Stars in a Galactic Zone.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1959ApJ...129...88S&db_key=AST
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INHABITED SKY
