A census of young stellar population associated with the Herbig Be star HD 200775
- Title
- A census of young stellar population associated with the Herbig Be star HD 200775
- Creator
- Saha P.; Gopinathan M.; Kamath U.; Lee C.W.; Puravankara M.; Mathew B.; Sharma E.
- Description
- The region surrounding the well-known reflection nebula, NGC 7023, illuminated by a Herbig Be star, HD 200775, located in the dark cloud L1174 is studied in this work. Based on the distances and proper motion values from Gaia DR2 of 20 previously known young stellar object (YSO) candidates, we obtained a distance of 335 11 pc to the cloud complex L1172/1174. Using polarization measurements of the stars projected on the cloud complex, we show additional evidence for the cloud to be at ?335 pc distance. Using this distance and proper motion values of the YSO candidates, we searched for additional comoving sources in the vicinity of HD 200775 and found 20 new sources, which show low infrared excess emission and are of age ?1 Myr. Among these, 10 YSO candidates and 4 newly identified comoving sources are found to show X-ray emission. Three of the four new sources for which we have obtained optical spectra show H ? in emission. About 80 per cent of the total sources are found within ?1 pc distance from HD 200775. Spatial correlation of some of the YSO candidates with the Herschel dust column density peaks suggests that star formation is still active in the region and may have been triggered by HD 200775. 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.
- Source
- Monthly Notices of the Royal Astronomical Society, Vol-494, No. 4, pp. 5851-5871.
- Date
- 2020-01-01
- Publisher
- Oxford University Press
- Subject
- ISM: clouds; polarization; stars: distances; stars: pre-main-sequence; X-rays: stars
- Coverage
- Saha P., Indian Institute of Astrophysics (IIA), Sarjapur Road, Koramangala, Bangalore, Karnataka, 560034, India, Pt. Ravishankar Shukla University, Amanaka G.E. Road, Raipur, Chhatisgarh, 492010, India; Gopinathan M., Indian Institute of Astrophysics (IIA), Sarjapur Road, Koramangala, Bangalore, Karnataka, 560034, India; Kamath U., Indian Institute of Astrophysics (IIA), Sarjapur Road, Koramangala, Bangalore, Karnataka, 560034, India; Lee C.W., Korea Astronomy and Space Science Institute (KASI), 776 Daedeok-daero, Yuseong-gu, Daejeon, South Chungcheong, 34055, South Korea, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, South Chungcheong, 34113, South Korea; Puravankara M., Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai, Maharashtra, 400005, India; Mathew B., Department of Physics and Electronics, CHRIST (deemed to be university), Bangalore, Karnataka, 560029, India; Sharma E., Indian Institute of Astrophysics (IIA), Sarjapur Road, Koramangala, Bangalore, Karnataka, 560034, India
- Rights
- All Open Access; Green Open Access
- Relation
- ISSN: 358711; CODEN: MNRAA
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Saha P.; Gopinathan M.; Kamath U.; Lee C.W.; Puravankara M.; Mathew B.; Sharma E., “A census of young stellar population associated with the Herbig Be star HD 200775,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 24, 2025, https://archives.christuniversity.in/items/show/16254.