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HD 98618: A Star Closely Resembling our Sun

Jorge Melendez·Katie Dodds-Eden·Jose A. Robles·;·RSAA/Mt Stromlo Observatory·Caltech·UNMSM
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Abstract

Despite the observational effort carried out in the last few decades, no perfect solar twin has been found to date. An important milestone was achieved a decade ago by Porto de Mello & da Silva, who showed that 18 Sco is almost a solar twin. In the present work, we use extremely high resolution (R = 10^5) high S/N Keck HIRES spectra to carry out a differential analysis of 16 solar twin candidates. We show that HD 98618 is the second-closest solar twin and that the fundamental parameters of both HD 98618 and 18 Sco are very similar (within a few percent) to the host star of our solar system, including the likelihood of hosting a terrestrial planet within their habitable zone. We suggest that these stars should be given top priority in exoplanet and SETI surveys.

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Jorge Melendez, Katie Dodds-Eden, Jose A. Robles, ;, RSAA/Mt Stromlo Observatory, Caltech, UNMSM. 2006-04-07. HD 98618: A Star Closely Resembling our Sun. https://doi.org/10.1086/503898

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