painkillers 发表于 2025-3-26 22:54:26

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慢跑鞋 发表于 2025-3-27 01:43:13

A search for T-Tauri stars based on the IRAS Point Source Catalog,. In a few cases the presence of a pre-planetary circumstellar disk can be inferred from an analysis of the relative velocity of forbidden lines with respect to the stellar rest velocity, but further observations are required to obtain better statistics on the presence of circumstellar disks.

招惹 发表于 2025-3-27 08:50:13

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VAN 发表于 2025-3-27 11:22:54

https://doi.org/10.1007/978-1-4613-4364-6ometer..This project has been submitted as a routine program to the solar 90 cm telescope THEMIS, on which we propose to permanently install the photometer. The photometer can be adapted to any photometric telescope.

dainty 发表于 2025-3-27 15:27:00

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ROOF 发表于 2025-3-27 20:26:35

https://doi.org/10.1007/978-3-658-10153-4of planetary companions in perhaps very numerous multiple stellar systems, increasing the possible number of habitable planets in the Universe, if such quasi-circular stable planetary orbits are found around other numerous binaries.

套索 发表于 2025-3-28 00:48:24

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慢慢啃 发表于 2025-3-28 03:09:36

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Axillary 发表于 2025-3-28 07:43:25

Planetary accretion debris and IR excesses in open stellar clusters,

细查 发表于 2025-3-28 10:28:28

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查看完整版本: Titlebook: Bioastronomy; The Search for Extra Jean Heidmann,Michael J. Klein Conference proceedings 1991 Springer-Verlag Berlin Heidelberg 1991 Bioast