Žirafa (sazvežđe)
Žirafa (lat. Camelopardalis) je sazvežđe severne hemisfere koje su početkom 17. veka definisali holandski astronom Petar Plancije i nemački astronom Jakob Barč,[3][1] kako bi pokrili deo neba između Velikog medveda i Kasiopeje koji su stari Grci ostavili prazan jer u njemu nema nijedne zvezde sjajnije od 4. magnitude. Latinski naziv sazvežđa se ponekad zapisuje i kao Camelopardalus ili Camelopardus.
| Sazvežđe | |
 | |
| Latinsko ime | Camelopardalis |
|---|---|
| Skraćenica | Cam[1] |
| Genitiv | Camelopardalis[1] |
| Simbolizuje | žirafu[1] |
| Rektascenzija | 6 |
| Deklinacija | +70[2] |
| Površina | 757 sq. deg. (18) |
| Najsjajnija zvezda | Beta Žirafe (4,03m) |
| Meteorski rojevi | nema |
| Susedna sazvežđa | |
| Vidljivo u rasponu +90° i −10°. U najboljem položaju za posmatranje u 21:00 čas u februaru. | |
Zvezde uredi
Uprkos svojoj veličini (18. najveće sazveđže po površini), u Žirafi nema sjajnih zvezda — najsjajnija je beta Žirafe magnitude 4,03. U pitanju je dvojna zvezda čija je glavna komponenta žuti superdžin G klase, a nalazi se na oko 1000 svetlosnih godina od Sunčevog sistema. Druga po sjajnosti je CS Žirafe magnitude 4,21. U pitanju je takođe dvojna zvezda, primarna komponenta je plavobeli superdžin B klase. Alfa Žirafe je sa magnitudom 4,3 treća po sjajnosti, radi se o superdžinu O klase koji ubrzano gubi masu.
Objekti dubokog neba uredi
NGC 2403 je spiralna galaksija magnitude 8,4 koju je u 18. veku otkrio Vilhelm Heršel. NGC 1502 je Otvoreno jato 6. magnitude u čijem se centru nalaze dve binarne zvezde. IC 342 je spiralna galaksija koja leži u blizini galaktičkog ekvatora, što otežava njeno posmatranje. U Žirafi se nalaze još i planetarna maglina NGC 1501 i mala galaksija NGC 2655.
Reference uredi
- ^ a b v g Ridpath 2001, str. 92–93.
- ^ „Camelopardalis, constellation boundary”. The Constellations. International Astronomical Union. Pristupljeno 14. 2. 2014.
- ^ Knowledge Encyclopedia Space!. Dorling Kindersley Ltd. 2015. str. 164. ISBN 9780241245347.
Literatura uredi
- Levy, David H. (2005), Deep Sky Objects
, Prometheus Books, ISBN 1-59102-361-0 - Norton, Arthur P. (1973), Norton's Star Atlas, str. 118–119, ISBN 0-85248-900-5
- Rey, H. A. (1997), The Stars—A New Way To See Them , Houghton Mifflin, ISBN 0-395-24830-2
- Ridpath, Ian (2001), Stars and Planets Guide, Princeton University Press, ISBN 0-691-08913-2
- Ridpath, Ian (2007), Stars and Planets Guide, Wil Tirion (4th izd.), Princeton University Press, ISBN 978-0-691-13556-4
- Staal, Julius D.W. (1988), The New Patterns in the Sky, McDonald and Woodward Publishing Company, ISBN 0-939923-04-1
- Wilkins, Jamie; Dunn, Robert (2006), 300 Astronomical Objects: A Visual Reference to the Universe (1st izd.), Firefly Books, ISBN 978-1-55407-175-3
- Allen, Richard Hinckley (1963) [1899]. Star Names: Their Lore and Meaning (reprint izd.). New York City: Dover Publications. ISBN 978-0-486-21079-7.
- Fischer, Debra; Driscoll, Peter; Isaacson, Howard; Giguere, Matt; Marcy, Geoffrey W.; Valenti, Jeff; Wright, Jason T.; Henry, Gregory W.; Johnson, John Asher; Howard, Andrew; Peek, Katherine; McCarthy, Chris (2009). „Five Planets and an Independent Confirmation of HD 196885 Ab from Lick Observatory”. The Astrophysical Journal. 703 (2): 1545—56. Bibcode:2009ApJ...703.1545F. S2CID 15524804. arXiv:0908.1596
. doi:10.1088/0004-637X/703/2/1545. - Garnavich, P. (1998). „Supernova 1998cf in NGC 3504”. IAU Circular. 6914 (6914): 1. Bibcode:1998IAUC.6914....1G.
- Gizis, J. E.; Monet, D. G.; Reid, I. N.; Kirkpatrick, J. D.; Burgasser, Adam J. (2000). „Two Nearby M Dwarf Binaries from 2MASS”. Monthly Notices of the Royal Astronomical Society. 311 (2): 385—88. Bibcode:2000MNRAS.311..385G. doi:10.1046/j.1365-8711.2000.03060.x .
- Hevelius, Johannes (1687). Catalogus Stellarum Fixarum (na jeziku: latinski). Gdaņsk, Poland: Gedani, typis J.-Z. Stollii.[mrtva veza]
- Jenniskens, Peter (2006). Meteor Showers and their Parent Comets. Cambridge, United Kingdom: Cambridge University Press. ISBN 978-0-521-85349-1.
- Jenniskens, Peter (septembar 2012). „Mapping Meteoroid Orbits: New Meteor Showers Discovered”. Sky & Telescope: 22.
- Kovtyukh, V. V.; Chekhonadskikh, F. A.; Luck, R. E.; Soubiran, C.; Yasinskaya, M. P.; Belik, S. I. (2010). „Accurate Luminosities for F-G Supergiants from Fe II/Fe I Line Depth Ratios”. Monthly Notices of the Royal Astronomical Society. 408 (3): 1568—75. Bibcode:2010MNRAS.408.1568K. doi:10.1111/j.1365-2966.2010.17217.x .
- Levy, David H. (2005). David Levy's Guide to Variable Stars. Cambridge, United Kingdom: Cambridge University Press. ISBN 978-0-521-60860-2.
- Matheson, P.; Jha, S.; Challis, P.; Kirshner, R.; Calkins, M. (2001). „Supernova 2001ac in NGC 3504”. IAU Circular. 7597 (7597): 3. Bibcode:2001IAUC.7597....3M.
- Moore, Patrick (2000). Exploring the Night Sky with Binoculars . Cambridge, United Kingdom: Cambridge University Press. ISBN 978-0-521-79390-2.
- Motz, Lloyd; Nathanson, Carol (1991). The Constellations: An Enthusiast's Guide to the Night Sky. London, United Kingdom: Aurum Press. ISBN 978-1-85410-088-7.
- Nogami, Daisaku; Masuda, Seiji; Kato, Taichi (1997). „The 1994 Superoutburst of the New SU UMa-type Dwarf Nova, SX Leonis Minoris”. Publications of the Astronomical Society of the Pacific. 109: 1114—21. Bibcode:1997PASP..109.1114N. doi:10.1086/133983 .
- O'Meara, Stephen James (2011). Deep-Sky Companions: The Secret Deep. Cambridge, United Kingdom: Cambridge University Press. ISBN 978-0-521-19876-9.
- Proctor, Richard Anthony (1870). A Star Atlas for the Library, the School and the Observatory. London, United Kingdom: Longmans, Green.
- Ridpath, Ian; Tirion, Wil (2001). Stars and Planets Guide. Princeton University Press. ISBN 0-691-08913-2.
- Robertson, J. W.; Honeycutt, R. K.; Turner, G. W. (1995). „RZ Leonis Minoris, PG 0943+521, and V1159 Orionis: Three Cataclysmic Variables with Similar and Unusual Outburst Behavior”. Publications of the Astronomical Society of the Pacific. 107: 443—49. Bibcode:1995PASP..107..443R. doi:10.1086/133572 .
- Russell, Henry Norris (oktobar 1922). „The New International Symbols for the Constellations”. Popular Astronomy. 30: 469—71. Bibcode:1922PA.....30..469R.
- Skiff, Brian A.; Lockwood, G.W. (1986). „The Photometric Variability of Solar-type Stars. V. The Standard Stars 10 and 11 Leonis Minoris”. Publications of the Astronomical Society of the Pacific. 98 (601): 338—41. Bibcode:1986PASP...98..338S. JSTOR 40678678. doi:10.1086/131763 .
- Thompson, Robert Bruce; Thompson, Barbara Fritchman (2007). Illustrated Guide to Astronomical Wonders: From Novice to Master Observer. North Sebastopol, California: O'Reilly Media. ISBN 978-0-596-52685-6.
- Wagman, Morton (2003). Lost Stars: Lost, Missing and Troublesome Stars from the Catalogues of Johannes Bayer, Nicholas Louis de Lacaille, John Flamsteed, and Sundry Others. Blacksburg, Virginia: The McDonald & Woodward Publishing Company. ISBN 978-0-939923-78-6.
- Wagner, R. Mark; Thorstensen, John R.; Honeycutt, R. K.; Howell, S. B.; Kaitchuck, R. H.; Kreidl, T. J.; Robertson, J. W.; Sion, E. M.; Starrfield, S. G. (1998). „A Photometric and Spectroscopic Study of the Cataclysmic Variable SX Leonis Minoris in Quiescence and Superoutburst”. The Astronomical Journal. 109 (2): 787—800. Bibcode:1998AJ....115..787W. doi:10.1086/300201 .
- Baldwin, Emily (25. 6. 2010). „Radio observations shed new light on Hanny's Voorwerp”. Astronomy Now. Pole Star Publications Ltd. Arhivirano iz originala 8. 3. 2012. g. Pristupljeno 8. 11. 2012.
- Beck, Sara J. (16. 7. 2010). „Delta Scuti and the Delta Scuti variables”. Variable Star of the Season. AAVSO (American Association of Variable Star Observers). Pristupljeno 8. 11. 2012.
- „Leo Minor, Constellation Boundary”. The Constellations. International Astronomical Union. Pristupljeno 15. 10. 2012.
- Schneider, Jean. „Planet HD 82886 b”. The Extrasolar Planets Encyclopaedia. Paris Observatory. Pristupljeno 25. 10. 2012.
- „ESA/Hubble Picture of the Week: Galaxy in a spin”. Hubble website. Pristupljeno 23. 10. 2012.
- „IMO Meteor Shower Calendar 2012 | International Meteor Organization”. The International Meteor Organization. 1997—2012. Pristupljeno 31. 10. 2012.
- James, Andrew (7. 2. 2011). „'The '"Constellations : Part 2 Culmination Times"'”. Southern Astronomical Delights. Sydney, New South Wales. Pristupljeno 19. 10. 2012.
- „Hubble Zooms in on a Space Oddity”. European Southern Observatory. 10. 1. 2011. Pristupljeno 8. 11. 2012.
- Kaler, Jim. „Beta Leonis Minoris”. Stars. University of Illinois. Pristupljeno 30. 3. 2007.
- Kaler, Jim. „21 Leonis Minoris”. Stars. University of Illinois. Pristupljeno 15. 10. 2012.
- Kaler, Jim. „Praecipua”. Stars. University of Illinois. Pristupljeno 15. 10. 2012.
- Grant, Shawn. „Leo Minor”. Deepsky Online. Knoxville Observers. Arhivirano iz originala 1. 4. 2012. g. Pristupljeno 14. 11. 2012.
- McDonald Observatory (5. 12. 2005). „Astronomers Find Most Stable Optical Clock in Heavens; Aids Understanding of Stars' Lives”. Phys.Org. Arhivirano iz originala 23. 07. 2020. g. Pristupljeno 22. 10. 2012.
- Jet Propulsion Laboratory, California Institute of Technology. „Results for NGC 2859”. NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration. Pristupljeno 23. 10. 2012.
- Jet Propulsion Laboratory, California Institute of Technology. „Results for NGC 3003”. NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration. Pristupljeno 23. 10. 2012.
- Jet Propulsion Laboratory, California Institute of Technology. „Results for NGC 3344”. NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration. Pristupljeno 23. 10. 2012.
- Jet Propulsion Laboratory, California Institute of Technology. „Results for NGC 3486”. NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration. Pristupljeno 23. 10. 2012.
- Jet Propulsion Laboratory, California Institute of Technology. „Results for NGC 3504”. NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration. Pristupljeno 23. 10. 2012.
- Ridpath, Ian (1988). „Urania's Mirror”. Old Star Atlases. Pristupljeno 5. 11. 2012.
- Ridpath, Ian (1988). „Constellations – Part Two”. Star Tales. Pristupljeno 20. 10. 2012.
- Ridpath, Ian (1988). „Leo Minor”. Star Tales. Pristupljeno 5. 11. 2012.
- Ridpath, Ian (1988). „Chapter One Concluded...Filling the Remaining Gaps”. Star Tales. Pristupljeno 20. 10. 2012.
- Rincon, Paul (5. 8. 2008). „Teacher finds new cosmic object”. BBC News. Pristupljeno 19. 10. 2012.
- „Beta Leonis Minoris”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 8. 11. 2012.
- „SU Leonis Minoris – Variable Star of RS CVn type”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 20. 10. 2012.
- „SV Leonis Minoris – Variable Star of RS CVn type”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 20. 10. 2012.
- „21 Leonis Minoris – Variable Star of delta Sct type”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 15. 10. 2012.
- „37 Leonis Minoris”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 5. 11. 2012.
- „46 Leonis Minoris – Variable Star”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 2. 11. 2012.
- „GJ 356 B – Star in double system”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 20. 10. 2012.
- „HD 82886”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 19. 10. 2012.
- „LHS 2216 – High Proper Motion Star”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 21. 10. 2012.
- „R Leonis Minoris – Variable Star of Mira Ceti type”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 22. 10. 2012.
- „RY Leonis Minoris – Pulsating White Dwarf”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 22. 10. 2012.
- „S Leonis Minoris – Variable Star of Mira Ceti type”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 22. 10. 2012.
- „U Leonis Minoris – Semi-regular pulsating Star”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 22. 10. 2012.
- „Interacting Galaxy Pair Arp 107”. Spitzer Space Telescope website. Spitzer Science Center, California Institute of Technology. 9. 6. 2005. Pristupljeno 19. 10. 2012.
Spoljašnje veze uredi
Vikimedijina Ostava ima datoteke za članak:
- The Deep Photographic Guide to the Constellations: Camelopardalis
- Star Tales – Camelopardalis
- NASA – Voyager Interstellar Mission Characteristics
- Sazvežđe Žirafa Arhivirano na sajtu Wayback Machine (24. februar 2012) na TopAstronomer.com (jezik: engleski)
