IS PZ MON A RED DWARF OR A RED GIANT?
Hipparcos data (ESA 1997) give for PZ Mon a parallax π = 0.71 +- 1.17 mas that is not in agreement with earlier estimations of distance to the star of 15-30 ps and with its status of K- dwarf. There are presented spectra of PZ Mon in the region 3750-6150 Α with resolution of 7 ≈ Α, which were carrie...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Odessa I. I. Mechnykov National University
2016-12-01
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| Series: | Odessa Astronomical Publications |
| Online Access: | http://oap.onu.edu.ua/article/view/86834 |
| _version_ | 1818963120225255424 |
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| author | N. I. Bondar' S. G. Sergeev |
| author_facet | N. I. Bondar' S. G. Sergeev |
| author_sort | N. I. Bondar' |
| collection | DOAJ |
| description | Hipparcos data (ESA 1997) give for PZ Mon a parallax π = 0.71 +- 1.17 mas that is not in agreement with earlier estimations of distance to the star of 15-30 ps and with its status of K- dwarf. There are presented spectra of PZ Mon in the region 3750-6150 Α with resolution of 7 ≈ Α, which were carried out in the Nasmith focus of 2.6 m reflector in the Crimean Astrophysical observatory. Intensities of molecular absorptions in this spectral range are determined relative a nearby continuum and their relations between absolute magnitudes are considered. The calculated Mν =6.74 and r=29 ps correspond to an earlier classiffication of PZ Mon as a red dwarf. |
| first_indexed | 2024-12-20T12:40:10Z |
| format | Article |
| id | doaj.art-1446601790ab42e794c93edd2c8cbe4d |
| institution | Directory Open Access Journal |
| issn | 1810-4215 |
| language | English |
| last_indexed | 2024-12-20T12:40:10Z |
| publishDate | 2016-12-01 |
| publisher | Odessa I. I. Mechnykov National University |
| record_format | Article |
| series | Odessa Astronomical Publications |
| spelling | doaj.art-1446601790ab42e794c93edd2c8cbe4d2022-12-21T19:40:29ZengOdessa I. I. Mechnykov National UniversityOdessa Astronomical Publications1810-42152016-12-01210171810.18524/1810-4215.2008.21.8683486834IS PZ MON A RED DWARF OR A RED GIANT?N. I. Bondar'0S. G. SergeevSRI "Crimean Astrophysical observatory" Nauchny, 98409, UkraineHipparcos data (ESA 1997) give for PZ Mon a parallax π = 0.71 +- 1.17 mas that is not in agreement with earlier estimations of distance to the star of 15-30 ps and with its status of K- dwarf. There are presented spectra of PZ Mon in the region 3750-6150 Α with resolution of 7 ≈ Α, which were carried out in the Nasmith focus of 2.6 m reflector in the Crimean Astrophysical observatory. Intensities of molecular absorptions in this spectral range are determined relative a nearby continuum and their relations between absolute magnitudes are considered. The calculated Mν =6.74 and r=29 ps correspond to an earlier classiffication of PZ Mon as a red dwarf.http://oap.onu.edu.ua/article/view/86834 |
| spellingShingle | N. I. Bondar' S. G. Sergeev IS PZ MON A RED DWARF OR A RED GIANT? Odessa Astronomical Publications |
| title | IS PZ MON A RED DWARF OR A RED GIANT? |
| title_full | IS PZ MON A RED DWARF OR A RED GIANT? |
| title_fullStr | IS PZ MON A RED DWARF OR A RED GIANT? |
| title_full_unstemmed | IS PZ MON A RED DWARF OR A RED GIANT? |
| title_short | IS PZ MON A RED DWARF OR A RED GIANT? |
| title_sort | is pz mon a red dwarf or a red giant |
| url | http://oap.onu.edu.ua/article/view/86834 |
| work_keys_str_mv | AT nibondar ispzmonareddwarforaredgiant AT sgsergeev ispzmonareddwarforaredgiant |