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- W4372317706 abstract "Actively accreting young stellar objects show H$alpha$ emission line in their spectra. We present the results of survey for H$alpha$ emission-line stars in the star-forming region IC~5070 taken with 2-m Himalyan {it Chandra} Telescope. Based on the H$alpha$ slitless spectroscopy data, we identified 131 emission-line stars in $sim$ 0.29 square degrees area of the IC~5070 region. Using Gaia Early Data Release 3, we estimated the mean proper motion and parallax of the emission-line stars. We also estimated the mean distance and reddening toward the region using the emission-line stars, that are $sim$ 833 pc and $sim$2 mag, respectively. By examining the locations of these stars in the color-magnitude diagrams constructed using Gaia and PanSTARRS1 data, we found that a majority of the H$alpha$ emitters are young low-mass ($<$ 1.5 $Modot$) stars. We also compared our catalog of emission-line stars with the available young stellar catalogs and found that most of them are Class~{II}/ flat spectrum sources with the spectral type ranging from K to M. Based on the proper motion/ parallax values and locations on the color-magnitude diagrams, about 20 emission-line stars are flagged as non-members. The relative proper motion of the emission-line stars with respect to the ionizing source suggest the possibility of the `rocket effect' scenario in the remnant cloud (BRC~31)." @default.
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- W4372317706 date "2023-05-05" @default.
- W4372317706 modified "2023-10-09" @default.
- W4372317706 title "Survey of $$hbox {H}{varvec{alpha }}$$ emission-line stars in the star-forming region IC 5070" @default.
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- W4372317706 doi "https://doi.org/10.1007/s12036-023-09935-x" @default.
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