Published November 20, 2012
| Version v1
Journal article
THE HOT R CORONAE BOREALIS STAR DY CENTAURI IS A BINARY
Creators
- 1. 543, 17th Main, IV Sector, HSR Layout, Bangalore 560102 (India)
- 2. W. J. McDonald Observatory, University of Texas, Austin, TX 78712-1083 (United States)
- 3. Instituto de Astrofísica de Canarias, C/Via Láctea s/n, E-38205 La Laguna (Spain)
- 4. Armagh Observatory, College Hill, Armagh BT61 9DG (United Kingdom)
- 5. Physics Department, University of Nebraska at Omaha, NE 68182-0266 (United States)
Description
The remarkable hot R Coronae Borealis (RCB) star DY Cen is revealed to be the first and only binary system to be found among the RCB stars and their likely relatives, including the extreme helium stars and the hydrogen-deficient carbon stars. Radial velocity determinations from 1982 to 2010 have shown that DY Cen is a single-lined spectroscopic binary in an eccentric orbit with a period of 39.67 days. It is also one of the hottest and most H-rich member of the class of RCB stars. The system may have evolved from a common envelope to its current form.
Availability note (English)
Available from http://dx.doi.org/10.1088/2041-8205/760/1/L3Additional details
Identifiers
Publishing Information
- Journal Title
- Astrophysical Journal Letters
- Journal Volume
- 760
- Journal Issue
- 1
- Journal Page Range
- [6 p.]
- ISSN
- 2041-8205
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 44037620
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- BINARY STARS; CARBON STARS; HELIUM; HYDROGEN; ORBITS; RADIAL VELOCITY; STAR EVOLUTION
- Descriptors DEC
- ELEMENTS; EVOLUTION; FLUIDS; GASES; MAIN SEQUENCE STARS; NONMETALS; RARE GASES; STARS; VELOCITY