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Spectroscopic pre-main-sequence binaries. II. Haro 1-14c and Parenago 2494

Reipurth, B; Lindgren, Harri LU ; Mayor, M; Mermilliod, JC and Cramer, N (2002) In Astronomical Journal 124(5). p.2813-2820
Abstract
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... (More)
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. (Less)
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organization
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type
Contribution to journal
publication status
published
subject
keywords
: other, binaries : spectroscopic, stars : pre-main-sequence, stars : variables
in
Astronomical Journal
volume
124
issue
5
pages
2813 - 2820
publisher
The American Astronomical Society
external identifiers
  • wos:000178768200032
  • scopus:0141528815
ISSN
1538-3881
language
English
LU publication?
yes
id
ca443f57-5c1c-49c6-80ac-3570edcaa3b6 (old id 324858)
alternative location
http://www.iop.org/EJ/article/1538-3881/124/5/2813/202160.web.pdf?request-id=0b0887c0-9409-45f3-886f-53ca0f4d338c
date added to LUP
2007-11-12 10:01:22
date last changed
2017-01-01 05:00:49
@article{ca443f57-5c1c-49c6-80ac-3570edcaa3b6,
  abstract     = {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.},
  author       = {Reipurth, B and Lindgren, Harri and Mayor, M and Mermilliod, JC and Cramer, N},
  issn         = {1538-3881},
  keyword      = {: other,binaries : spectroscopic,stars : pre-main-sequence,stars : variables},
  language     = {eng},
  number       = {5},
  pages        = {2813--2820},
  publisher    = {The American Astronomical Society},
  series       = {Astronomical Journal},
  title        = {Spectroscopic pre-main-sequence binaries. II. Haro 1-14c and Parenago 2494},
  volume       = {124},
  year         = {2002},
}