The results of photoelectric photometry in the Vilnius seven-color system are given for 152 stars down to 12.2mag in the area of the molecular cloud MBM 12 and the dust clouds L1454 and L1457 in Aries. The results of photometric classification of stars are also given. The investigation of interstellar extinction in the area is described in the next paper, Straizys et al., Cat. <J/BaltA/11/231>.
Vilnius seven-color photometry has been obtained for 238 stars down to 13th mag in the area of the California Nebula in Perseus. For nearly all of the stars photometric spectral classes, luminosity classes, absolute magnitudes, interstellar reddenings, extinctions and distances are determined. The present paper contains the results of photometry and the parameters of the stars.
The area of the open cluster NGC 2395 in Gemini is investigated by CCD photometry in the Vilnius seven-color system. Magnitudes, color indices, photometric spectral types, color excesses, interstellar extinctions and distances are determined for the 163 stars down to V=15.75mag in the 25' diameter area.
In a 1.5 square degree area, centered at RA=21:44:30, DE=+65:58, we have determined magnitudes and color indices for 2140 stars in the Vilnius seven-color system down to V=17mag. This area includes a star-forming region with the open cluster NGC 7129 embedded in a dense dust cloud TGU 645 (LDN 1181), close to the Cepheus Flare, and a distant old open cluster NGC 7142 seen through a semi-transparent window. For most of the stars spectral and luminosity classes in the MK system, determined from the photometric data, are given.
Table 2 contains the results of photometry of 948 stars down to V=16.2mag in the Vilnius seven-color system at the North Ecliptic Pole. Photometric data are used to classify about 500 stars in spectral and luminosity classes. For the remaining stars one-dimensional spectral classes are given. The results of photometry and classification can be used to supplement the catalog of Gaia standard stars near the Ecliptic poles. To facilitate this, Table 3 presents the magnitudes of the SDSS and Gaia systems transformed from the Vilnius seven-color photometry.
The results of photoelectric photometry in the Vilnius seven-color system and photometric classification are given for 419 stars down to ~11.0mag in a 5x10sq. degree area in the direction of the Serpens Cauda dark clouds.
A catalog of spectral types, color excesses, interstellar extinctions and distances of 402 stars located in the Serpens Cauda dark cloud complex and the new results of photoelectric photometry in the Vilnius system of 56 fainter stars in the same area are presented.
The results of photoelectric photometry of 564 stars in the Vilnius seven-color system in three areas near the North America and Pelican nebulae are given. Photometric spectral types, absolute magnitudes, colour excesses, interstellar extinctions and distances of the stars are determined. We find that the dark cloud separating both nebulae is at 580pc distance. A number of stars immersed into the dark cloud have been found. It seems that the dark cloud extends to south down to 40deg declination. The area southwest of {alpha} Cyg in the declination zones 42 and 43deg is comparatively transparent at least up to 1kpc.
We present the results of CCD photometry in the seven-color Vilnius system for 302 stars in the 12x12 arcmin area in the vicinity of the dark cloud TGU H942 P7. Observational data were obtained in 2015-2016 with the 1.8m VATT telescope of the Vatican observatory on Mt Graham, Arizona. Using the Koenig & Leisawitz (2014ApJ...791..131K) classification scheme we identified 88 YSOs in this area. The majority of them are concentrated in dust clump P7 and the infrared cluster FSR 655. The other compact group of YSOs is located at RA=03:54:56, DEC=+53:45. These stars are probably members of small infrared cluster which we call SCB1.
The results of CCD photometry in the Vilnius seven-color system down to V=18mag are presented for 242 stars in the direction of the young open cluster IC 1805 that is located in the active star-forming region W4 in the Cas OB6 association. Photometric data were used to classify stars into spectral and luminosity classes, and to determine their interstellar reddenings, extinctions and distances.
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