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Spectroscopic pre-m...
Spectroscopic pre-main-sequence binaries. II. Haro 1-14c and Parenago 2494
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Reipurth, B (författare)
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- Lindgren, Harri (författare)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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Mayor, M (författare)
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Mermilliod, JC (författare)
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Cramer, N (författare)
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(creator_code:org_t)
- 2002
- 2002
- Engelska.
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Ingår i: The Astronomical Journal. - 1538-3881. ; 124:5, s. 2813-2820
- Relaterad länk:
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- In the course of a long-term radial velocity survey of about 100 southern pre-main-sequence (PMS) stars, we have discovered two spectroscopic PMS binaries. One is the weak-lined T Tauri star Haro 1-14c in the Ophiuchus clouds, which has a spectral type of K3 and is a member of the visual Haro 1-14 binary with a separation of 12."9. Haro 1-14c is a single-lined spectroscopic binary with a very long period of 591 days. The other is Parenago 2494, a weak-lined T Tauri star with a spectral type of K0 located in the Orion cluster. It is a double-lined spectroscopic binary with a period of 19.5 days. Our photometric monitoring shows that P2494 is a low-amplitude variable with a period of 5.77 days. We have determined accurate orbital elements for both binaries. We further discuss five low-amplitude velocity variable stars, which are possibly additional spectroscopic PMS binaries.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- : other
- binaries : spectroscopic
- stars : pre-main-sequence
- stars : variables
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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