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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 The 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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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
: other, binaries : spectroscopic, stars : pre-main-sequence, stars : variables
in
The Astronomical Journal
volume
124
issue
5
pages
2813 - 2820
publisher
IOP Publishing
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
2016-04-01 12:17:28
date last changed
2022-12-11 01:17:38
@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}},
  keywords     = {{: other; binaries : spectroscopic; stars : pre-main-sequence; stars : variables}},
  language     = {{eng}},
  number       = {{5}},
  pages        = {{2813--2820}},
  publisher    = {{IOP Publishing}},
  series       = {{The Astronomical Journal}},
  title        = {{Spectroscopic pre-main-sequence binaries. II. Haro 1-14c and Parenago 2494}},
  url          = {{http://www.iop.org/EJ/article/1538-3881/124/5/2813/202160.web.pdf?request-id=0b0887c0-9409-45f3-886f-53ca0f4d338c}},
  volume       = {{124}},
  year         = {{2002}},
}