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Survey of Hα emission-line stars in the star-forming region IC 5070

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dc.contributor.author Panwar, Neelam
dc.contributor.author Jose, Jessy
dc.contributor.author Rishi, C
dc.date.accessioned 2024-03-05T07:32:59Z
dc.date.available 2024-03-05T07:32:59Z
dc.date.issued 2023-06
dc.identifier.uri https://doi.org/10.1007/s12036-023-09935-x
dc.identifier.uri http://localhost:8080/xmlui/handle/123456789/1478
dc.description.abstract Actively accreting young stellar objects show Hα emission line in their spectra. We present the results of survey for Hα emission-line stars in the star-forming region IC 5070 taken with 2-m Himalyan Chandra Telescope. Based on the Hα slitless spectroscopy data, we identified 131 emission-line stars in ∼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, which are ∼833 pc and ∼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 Hα emitters are young low-mass (<1.5 M ) 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). en_US
dc.language.iso en en_US
dc.publisher Journal Astrophysical Astronomy en_US
dc.relation.ispartofseries 1988;jaa44-42
dc.subject Hii regions: IC 5070 en_US
dc.subject stars: T-Tauri en_US
dc.subject stars: proper-motion en_US
dc.title Survey of Hα emission-line stars in the star-forming region IC 5070 en_US
dc.type Article en_US


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