Wyniki wyszukiwania - BazTech

Ograniczanie wyników

4 Acta Astronomica

Znaleziono wyników: 4

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: ISM: general

Sortuj według:

Ogranicz wyniki do:

Variable Intensities of Molecular Features in the Spectrum of AE Aur

Krełowski J., Galazutdinov G. A., Mulas G., Bondar A., Musaev F. A., Shapovalova A., Cecchi-Pestellini C., Beletsky Y., Lee B. C.

Acta Astronomica

2016

Vol. 66, No. 3

391--403

Using spectra of the star AE Aur (HD 34078), covering the period 1997-2015, we suggest that two strong molecular features of CH and CH+ underwent detectable changes of intensity. In the last five years both CH and CH+ declined sharply and systematically, with the CH/CH+ ratio steadily growing. No variations in the radial velocities of the observed interstellar features was detected during the covered period.

Stars with ISM Polarization Observed with HPOL. III

Weitenbeck A. J.

Acta Astronomica

2008

Vol. 58, No. 4

433--439

Polarization data are given for stars whose polarizations are mostly interstellar which were observed with the University of Wisconsin spectropolarimeter (HPOL) during 1995-2004.

ISM Polarization toward NGC 1502

Weitenbeck A., J., Halstead E. A., Carver A. J.

Acta Astronomica

2008

Vol. 58, No. 1

41--54

Visual polarimetry of field stars along the line of sight to the cluster NGC 1502 and several stars in the cluster itself have been obtained. Polarization varies from much less than 1% at a distance of 100-200 pc to over 6% for the cluster stars; the field direction is uniform to within about 10° from the nearest to the most distant stars. λmax for the most distant field stars is about 5000 Å, and for the cluster stars is about 4800 Å, implying that R significantly less than 3 for this region.

Stars with ISM Polarization Observed with HPOL. II

Weitenbeck A. J.

Acta Astronomica

2004

Vol. 54, No. 1

87--102

Polarization data are given for stars whose polarizations are mostly interstellar which were observed with the University of Wisconsin spectropolarimeter (HPOL) during 1995-2003. Several cases are found for which K in the Serkowski Law for ISM polarization is higher than allowed by published formulas.