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Probable association of T Tauri stars with the L1014 dense core

Atsuko Morita·Makoto Watanabe·Koji Sugitani·Yoichi Itoh·Mariko Uehara·Chie Nagashima·Noboru Ebizuka·Takashi Hasegawa·Kenzo Kinugasa·Motohide Tamura
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Abstract

Using the Wide Field Grism Spectrograph 2 (WFGS2), we have carried out slit-less spectroscopy, g'r'i' photometry, and slit spectroscopy on the L1014 dense core. We detected three Halpha emission line stars. We interpret one as weak-line T Tauri star (WTTS) and the others as classical T Tauri stars (CTTS). Since their g'-i' colors and/or classified spectral types are consistent with those of T Tauri stars and two of them show less extinction than the cloud, these three stars are likely to be T Tauri stars associated with L1014. Adopting an age range for T Tauri stars, 1-10 Myr, the color-magnitude diagram suggests a distance of ~400-900 pc, rather than the previously assumed distance, 200 pc. This could strongly affect on the mass estimate of L1014-IRS, which is thought to be either a very young protostar or proto-brown dwarf.

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Atsuko Morita, Makoto Watanabe, Koji Sugitani, Yoichi Itoh, Mariko Uehara, Chie Nagashima, Noboru Ebizuka, Takashi Hasegawa, Kenzo Kinugasa, Motohide Tamura. 2006-10-16. Probable association of T Tauri stars with the L1014 dense core. https://doi.org/10.1093/pasj%2F58.5.l41

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