A census of young stellar population associated with the Herbig Be star HD 200775. Issue 4 (20th April 2020)
- Record Type:
- Journal Article
- Title:
- A census of young stellar population associated with the Herbig Be star HD 200775. Issue 4 (20th April 2020)
- Main Title:
- A census of young stellar population associated with the Herbig Be star HD 200775
- Authors:
- Saha, Piyali
Gopinathan, Maheswar
Kamath, Umanath
Lee, Chang Won
Puravankara, Manoj
Mathew, Blesson
Sharma, Ekta - Abstract:
- ABSTRACT: 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 α 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.
- Is Part Of:
- Monthly notices of the Royal Astronomical Society. Volume 494:Issue 4(2020)
- Journal:
- Monthly notices of the Royal Astronomical Society
- Issue:
- Volume 494:Issue 4(2020)
- Issue Display:
- Volume 494, Issue 4 (2020)
- Year:
- 2020
- Volume:
- 494
- Issue:
- 4
- Issue Sort Value:
- 2020-0494-0004-0000
- Page Start:
- 5851
- Page End:
- 5871
- Publication Date:
- 2020-04-20
- Subjects:
- polarization -- stars: distances -- stars: pre-main-sequence -- ISM: clouds -- X-rays: stars
Astronomy -- Periodicals
Periodicals
520.5 - Journal URLs:
- http://mnras.oxfordjournals.org/ ↗
http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2966 ↗
http://www.blackwell-synergy.com/issuelist.asp?journal=mnr ↗
http://www.blackwell-synergy.com/loi/mnr ↗
http://ukcatalogue.oup.com/ ↗ - DOI:
- 10.1093/mnras/staa1053 ↗
- Languages:
- English
- ISSNs:
- 0035-8711
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 5943.000000
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 15105.xml