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UBVI CCD photometry of M35 (NGC 2168)
UBVI CCD photometry has been obtained for the intermediate-age opencluster M35 (NGC 2168). From this new photometry we derived the clusterparameters (V_0 - M_V= 9.60 +/- 0.10 mag, E(B-V) = 0.255 +/- 0.024 mag),age (log t_age=8.3 +/-0.3) and a photometric abundance (Z ~ 0.008, i.e.[Fe/H] ~ - 0.3) from comparison with theoretical isochrones of thePadova group. A minimum binary frequency (35 +/- 5 per cent) wasestimated from the distribution of distance moduli of unevolved propermotion members. Faint photometric members were selected by usingdifferences in the reddening effect on colour indices.
| Colour excesses of F-G supergiants and Cepheids from Geneva photometry.
A reddening scale for F-G supergiants and Cepheids is presented.Supergiants with low reddenings or in clusters form the basis of thecalibration. In this sense, it is entirely empirical. The data have beenobtained in the Geneva photometric system. Comparisons with otherreddening scales show no disagreement. The only problem is with Fernie'sscale for Cepheids (1990), where a systematic trend exists. Its originis not clear. It is suggested to extend the number of supergiants withindependently obtained colour excesses in order to test the existence ofa possible luminosity dependence of the calibration. A period-colourrelation for Cepheids is deduced, on the basis of the present reddeningcorrections. It gives strong support for V473 Lyr being a secondovertone pulsator.
| Colour excesses and absolute magnitudes for non-Cepheid F-G supergiants from uvbybeta photometry
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1990A&A...239..205A&db_key=AST
| A proper-motion analysis of the cluster M35
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1986AJ.....91..557M&db_key=AST
| Relative proper motions in the region of the open cluster NGC 2168 (M35).
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971AJ.....76..475C&db_key=AST
| Untersuchungen uber die Eigenbewegungen von Sternhaufen IX,
Not Available
| Red indices in galactic clusters. II.Messier 35, NGC 2158, IC 2157, NGC 2129, 1817, 2266, 2281
Not Available
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Membro dei seguenti gruppi:
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Osservazione e dati astrometrici
| Costellazione: | Gemelli |
| Ascensione retta: | 06h09m00.87s |
| Declinazione: | +24°15'56.2" |
| Magnitudine apparente: | 8.584 |
| Moto proprio RA: | 3 |
| Moto proprio Dec: | -2.9 |
| B-T magnitude: | 10.373 |
| V-T magnitude: | 8.732 |
Cataloghi e designazioni:
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