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Outputs (6)

RE 0618 + 7 5 - A very short-period, binary dMe system (1993)
Journal Article
Jeffries, R., Elliott, K., Kellett, B., & Bromage, G. (1993). RE 0618 + 7 5 - A very short-period, binary dMe system. Monthly Notices of the Royal Astronomical Society, 265(1), https://doi.org/10.1093/mnras/265.1.81

We report on the discovery of a new, very short-period, chromospherically active, late-type binary system. Observations performed with the ROSAT Wide Field Camera revealed the EUV source RE 0618 + 75, and subsequent optical spectroscopy identified th... Read More about RE 0618 + 7 5 - A very short-period, binary dMe system.

The Kinematics of Active Late Type Stars Observed by the ROSAT Wide-Field Camera (1993)
Journal Article
Jeffries, R., & Jewell, S. (1993). The Kinematics of Active Late Type Stars Observed by the ROSAT Wide-Field Camera. Monthly Notices of the Royal Astronomical Society, 264(1), https://doi.org/10.1093/mnras/264.1.106

A sample of single, main-sequence late-type stars detected during the ROSAT Wide Field Camera EUV all-sky survey is kinematically investigated. It is confirmed that the galactic velocity dispersion of magnetically active objects, as defined by the ra... Read More about The Kinematics of Active Late Type Stars Observed by the ROSAT Wide-Field Camera.

Prominence activity on the rapidly rotating field star HD 197890 (1993)
Journal Article
Jeffries, R. D. (1993). Prominence activity on the rapidly rotating field star HD 197890. Monthly Notices of the Royal Astronomical Society, 262(2), https://doi.org/10.1093/mnras/262.2.369

Time-resolved H αspectra are presented of the recently discovered, rapidly rotating young field star HD 197890. The observations contain rapid absorption and emission transients that cross the rotationally broadened Hα profile from blue to red on tim... Read More about Prominence activity on the rapidly rotating field star HD 197890.

The ROSAT Wide Field Camera all-sky survey of extreme-ultraviolet sources. I - The Bright Source Catalogue (1993)
Journal Article
Pounds, K., Allan, D., Barber, C., Barstow, M., Bertram, D., Branduardi-Raymont, G., …Wonnacott, D. (1993). The ROSAT Wide Field Camera all-sky survey of extreme-ultraviolet sources. I - The Bright Source Catalogue. Monthly Notices of the Royal Astronomical Society, 260(1), https://doi.org/10.1093/mnras/260.1.77

The first all-sky survey for cosmic sources of extreme-ultraviolet radiation has been carried out with the UK Wide Field Camera on ROSAT. A first reduction of the survey data has yielded a catalogue of 383 relatively bright EUV sources, forming the W... Read More about The ROSAT Wide Field Camera all-sky survey of extreme-ultraviolet sources. I - The Bright Source Catalogue.

Gliese 841A - an EUV-selected chromospherically active binary system (1993)
Journal Article
Jeffries, R., & Bromage, G. (1993). Gliese 841A - an EUV-selected chromospherically active binary system. Monthly Notices of the Royal Astronomical Society, 260(1), https://doi.org/10.1093/mnras/260.1.132

We report the discovery of a new short-period, main-sequence, chromospherically active late-type binary system. EUV observations performed by the ROSAT Wide Field Camera have identified the late-type star GL 841A as a possible very active star by vir... Read More about Gliese 841A - an EUV-selected chromospherically active binary system.