dc.contributor.author | Barentsen, Geert | |
dc.contributor.author | Vink, Jorick S. | |
dc.contributor.author | Drew, J.E. | |
dc.contributor.author | Greimel, R. | |
dc.contributor.author | Wright, Nick | |
dc.contributor.author | Drake, J. J. | |
dc.contributor.author | Martin, E.L. | |
dc.contributor.author | Valdivielso, L. | |
dc.contributor.author | Corradi, R.L.M. | |
dc.date.accessioned | 2011-09-22T09:01:11Z | |
dc.date.available | 2011-09-22T09:01:11Z | |
dc.date.issued | 2011-07 | |
dc.identifier.citation | Barentsen , G , Vink , J S , Drew , J E , Greimel , R , Wright , N , Drake , J J , Martin , E L , Valdivielso , L & Corradi , R L M 2011 , ' T Tauri candidates and accretion rates using IPHAS : method and application to IC 1396 ' , Monthly Notices of the Royal Astronomical Society , vol. 415 , no. 1 , pp. 103-132 . https://doi.org/10.1111/j.1365-2966.2011.18674.x | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.other | PURE: 367920 | |
dc.identifier.other | PURE UUID: c45afba9-488d-47fa-af9f-1cffb1a2aa70 | |
dc.identifier.other | WOS: 000293755000027 | |
dc.identifier.other | Scopus: 79960130049 | |
dc.identifier.uri | http://hdl.handle.net/2299/6464 | |
dc.description | The definitive version can be found at : http://onlinelibrary.wiley.com/ Copyright Royal Astronomical Society | |
dc.description.abstract | The Isaac Newton Telescope (INT) Photometric H-Alpha Survey (IPHAS) is a 1800 deg(2) survey of the Northern Galactic Plane, reaching down to r' similar to 21. We demonstrate how the survey can be used to (1) reliably select classical T Tauri star candidates and (2) constrain the mass accretion rates with an estimated relative uncertainty of 0.6 dex. IPHAS is a necessary addition to spectroscopic surveys because it allows large and uniform samples of accretion rates to be obtained with a precise handle on the selection effects. We apply the method on a region of 7 deg(2) towards the H II region IC 1396 in Cepheus OB2 and identify 158 pre-main-sequence candidates with masses between 0.2 and 2.0 M-circle dot and accretion rates between 10(-9.2) and 10(-7.0) M-circle dot yr(-1). We find a power-law dependency between the stellar mass and the accretion rates with a slope of alpha = 1.1 +/- 0.2, which is less steep than indicated by previous studies. We discuss the influence of method-dependent systematic effects on the determination of this relationship. The majority of our sample consists of faint, previously unknown, low-mass T Tauri candidates (56 per cent between 0.2 and 0.5 M-circle dot). Many candidates are clustered in front of three bright-rimmed molecular clouds, which are being ionized by the massive star HD206267 (O6.5V). We discover a spatio-temporal gradient of increasing accretion rates, increasing Spitzer infrared excess, and younger ages away from the ionizing star, providing a strong indication that the formation of these clusters has been sequentially triggered by HD206267 during the last similar to 1 Myr. | en |
dc.format.extent | 30 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | |
dc.subject | accretion, accretion discs | |
dc.subject | stars: pre-main-sequence | |
dc.subject | stars: variables: T Tauri, Herbig Ae/Be | |
dc.subject | open clusters and associations: individual: IC1396 | |
dc.title | T Tauri candidates and accretion rates using IPHAS : method and application to IC 1396 | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Science & Technology Research Institute | |
dc.contributor.institution | Centre for Astrophysics Research | |
dc.description.status | Peer reviewed | |
dc.date.embargoedUntil | 2011-12-01 | |
rioxxterms.version | AM | |
rioxxterms.versionofrecord | https://doi.org/10.1111/j.1365-2966.2011.18674.x | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |