J/A+A/581/A52 Gaia-ESO Survey: H{alpha} emission stars catalogue (Traven+, 2015) ================================================================================ The Gaia-ESO Survey: Catalogue of H{alpha} emission stars. Traven G., Zwitter T., Van Eck S., Klutsch A., Bonito R., Lanzafame A.C., Alfaro E.J., Bayo A., Bragaglia A., Costado M.T., Damiani F., Flaccomio E., Frasca A., Hourihane A., Jimenez-Esteban F., Lardo C., Morbidelli L., Pancino E., Prisinzano L., Sacco G.G., Worley C.C. =2015A&A...581A..52T ================================================================================ ADC_Keywords: Stars, emission ; Stars, peculiar ; Spectroscopy Keywords: stars: emission-line, Be - stars: peculiar - open clusters and associations: general - line: profiles - catalogs - stars: activity Abstract: We discuss the properties of H{alpha} emission stars across the sample of 22035 spectra from the Gaia-ESO Survey internal data release, observed with the GIRAFFE instrument and largely belonging to stars in young open clusters. Automated fits using two independent Gaussian profiles and a third component accounting for the nebular emission allow us to discern distinct morphological types of H{alpha} line profiles with the introduction of a simplified classification scheme. Altogether we find 3765 stars with intrinsic emission and sort their spectra into eight distinct morphological categories: single component emission, emission blend, sharp emission peaks, double emission, P-Cygni, inverted P-Cygni, self absorption, and emission in absorption. We have more than one observation for 1430 stars in our sample, thus allowing a quantitative discussion of the degree of variability of H{alpha} emission profiles, which is expected for young, active objects. We present a catalogue of stars with properties of their H{alpha} emission line profiles, morphological classification, analysis of variability with time and the supplementary information from SIMBAD, VizieR and ADS databases. The records in SIMBAD indicate the presence of H{alpha} emission for roughly 25% of all stars in our catalogue while at least 305 of them have already been more thoroughly investigated according to the references in ADS. The most frequently identified morphological categories in our sample of spectra are emission blend (23%), emission in absorption (22%), and self absorption (16%). Objects with repeated observations demonstrate that our classification into discrete categories is generally stable through time while seemingly less stable are categories P-Cygni and Self absorption, which is the consequence of discrete classification rules as well as of the fundamental change in profile shape. Such records of emission stars can be valuable for automatic pipelines in large surveys, where it may prove very useful to pinpoint outliers during calculation of general stellar properties and elemental abundances. They can find use in studies of star formation processes, interacting binaries and other fields of stellar physics. Description: The GES employs the VLT-UT2 FLAMES high-resolution multiobject spectrograph . FLAMES has two instruments, the higher-resolution UVES, fed by 8 fibres, and GIRAFFE, with about 130 fibres. In the present paper we concentrate on the much more numerous GIRAFFE spectra to thoroughly test our classification scheme; a similar analysis of the UVES spectra will follow later. We use only spectra obtained in the wavelength range with H{alpha} line - HR15N setting (6470-6790{AA}, R=17000), for which the majority of targets selected by GES are open cluster stars. Along with ongoing GES observations, we also use all relevant ESO archive data, which are included to be analysed as part of GES. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file tabled1.dat 745 8846 Master table with the main results for each analysed spectrum tabled2.dat 701 4459 Cross-identifications to Simbad, Vizier and ADS tabled3.dat 269 98 Reference list -------------------------------------------------------------------------------- Byte-by-byte Description of file: tabled1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 23 A23 "datime" ObsDate Date and time of the observation (YYYY-MM-DDThh:mm:ss.sss) (DATEOBS) 25- 40 A16 --- Cname Sexagesimal, equatorial position-based source name (HHMMSSss+DDMMSSs) (CNAME) 42- 49 F8.4 deg RAdeg Right ascension (J2000) 51- 59 F9.5 deg DEdeg Declination (J2000) 61- 67 F7.2 0.1nm lam11 [6557/65667] Central wavelength {lambda}_1_ of first Gaussian fit, 1/5 (Halpha_lambda_1) (2) 69- 75 F7.2 0.1nm lam12 [6557/65667] Central wavelength {lambda}_1_ of first Gaussian fit, 2/5 (Halpha_lambda_1) (2) 77- 83 F7.2 0.1nm lam13 [6557/65667] Central wavelength {lambda}_1_ of first Gaussian fit, 3/5 (Halpha_lambda_1) (2) 85- 91 F7.2 0.1nm lam14 [6557/65667] Central wavelength {lambda}_1_ of first Gaussian fit, 3/5 (Halpha_lambda_1) (2) 93- 99 F7.2 0.1nm lam15 [6557/65667] Central wavelength {lambda}_1_ of first Gaussian fit, 4/5 (Halpha_lambda_1) (2) 101-108 F8.6 0.1nm sig11 [0.15/2] Dispersion {sigma}_1_ of first Gaussian profile fit, 1/5 (Halpha_sigma_1) (2) 110-117 F8.6 0.1nm sig12 [0.15/2] Dispersion {sigma}_1_ of first Gaussian profile fit, 2/5 (Halpha_sigma_1) (2) 119-126 F8.6 0.1nm sig13 [0.15/2] Dispersion {sigma}_1_ of first Gaussian profile fit, 3/5 (Halpha_sigma_1) (2) 128-135 F8.6 0.1nm sig14 [0.15/2] Dispersion {sigma}_1_ of first Gaussian profile fit, 4/5 (Halpha_sigma_1) (2) 137-145 F9.7 0.1nm sig15 [0.15/2] Dispersion {sigma}_1_ of first Gaussian profile fit, 5/5 (Halpha_sigma_1) (2) 146-159 F14.7 --- A11 Peak height A_1_ of the first Gaussian profile fit, 1/5 (Halpha_peak_1) (2) 161-174 F14.7 --- A12 Peak height A_1_ of the first Gaussian profile fit, 2/5 (Halpha_peak_1) (2) 176-189 F14.7 --- A13 Peak height A_1_ of the first Gaussian profile fit, 3/5 (Halpha_peak_1) (2) 191-203 F13.7 --- A14 Peak height A_1_ of the first Gaussian profile fit, 4/5 (Halpha_peak_1) (2) 205-217 F13.7 --- A15 Peak height A_1_ of the first Gaussian profile fit, 5/5 (Halpha_peak_1) (2) 219-225 F7.2 0.1nm lam21 [6559/6569] Central wavelength {lambda}_2_ of second Gaussian fit, 1/5 (Halpha_lambda_2) (2) 227-233 F7.2 0.1nm lam22 [6559/6569] Central wavelength {lambda}_2_ of second Gaussian fit, 2/5 (Halpha_lambda_2) (2) 235-241 F7.2 0.1nm lam23 [6559/6569] Central wavelength {lambda}_2_ of second Gaussian fit, 3/5 (Halpha_lambda_2) (2) 243-249 F7.2 0.1nm lam24 [6559/6569] Central wavelength {lambda}_2_ of second Gaussian fit, 4/5 (Halpha_lambda_2) (2) 251-257 F7.2 0.1nm lam25 [6559/6569] Central wavelength {lambda}_2_ of second Gaussian fit, 5/5 (Halpha_lambda_2) (2) 259-266 F8.6 0.1nm sig21 [0.15/2] Dispersion {sigma}_2_ of second Gaussian profile fit, 1/5 (Halpha_sigma_2) (2) 268-275 F8.6 0.1nm sig22 [0.15/2] Dispersion {sigma}_2_ of second Gaussian profile fit, 2/5 (Halpha_sigma_2) (2) 277-284 F8.6 0.1nm sig23 [0.15/2] Dispersion {sigma}_2_ of second Gaussian profile fit, 3/5 (Halpha_sigma_2) (2) 286-293 F8.6 0.1nm sig24 [0.15/2] Dispersion {sigma}_2_ of second Gaussian profile fit, 4/5 (Halpha_sigma_2) (2) 295-302 F8.6 0.1nm sig25 [0.15/2] Dispersion {sigma}_2_ of second Gaussian profile fit, 5/5 (Halpha_sigma_2) (2) 304-316 F13.7 --- A21 Peak height A_2_ of the second Gaussian profile fit, 1/5 (Halpha_peak_2) (2) 318-330 F13.7 --- A22 Peak height A_2_ of the second Gaussian profile fit, 2/5 (Halpha_peak_2) (2) 332-344 F13.7 --- A23 Peak height A_2_ of the second Gaussian profile fit, 3/5 (Halpha_peak_2) (2) 346-358 F13.7 --- A24 Peak height A_2_ of the second Gaussian profile fit, 4/5 (Halpha_peak_2) (2) 360-373 F14.8 --- A25 Peak height A_2_ of the second Gaussian profile fit, 5/5 (Halpha_peak_2) (2) 374-380 F7.2 0.1nm lam31 [6562/6564]?=0 Central wavelength {lambda}_3_ of third Gaussian fit, 1/5 (Halpha_lambda_neb) (2) 382-388 F7.2 0.1nm lam32 [6562/6564]?=0 Central wavelength {lambda}_3_ of third Gaussian fit, 2/5 (Halpha_lambda_neb) (2) 390-396 F7.2 0.1nm lam33 [6562/6564]?=0 Central wavelength {lambda}_3_ of third Gaussian fit, 3/5 (Halpha_lambda_neb) (2) 398-404 F7.2 0.1nm lam34 [6562/6564]?=0 Central wavelength {lambda}_3_ of third Gaussian fit, 4/5 (Halpha_lambda_neb) (2) 406-412 F7.2 0.1nm lam35 [6562/6564]?=0 Central wavelength {lambda}_3_ of third Gaussian fit, 5/5 (Halpha_lambda_neb) (2) 414-421 F8.6 0.1nm sig31 [0.26/0.45]?=0 Dispersion {sigma}_3_ of third Gaussian profile fit, 1/5 (Halpha_sigma_neb) (2) 423-430 F8.6 0.1nm sig32 [0.26/0.45]?=0 Dispersion {sigma}_3_ of third Gaussian profile fit, 2/5 (Halpha_sigma_neb) (2) 432-439 F8.6 0.1nm sig33 [0.26/0.45]?=0 Dispersion {sigma}_3_ of third Gaussian profile fit, 3/5 (Halpha_sigma_neb) (2) 441-448 F8.6 0.1nm sig34 [0.26/0.45]?=0 Dispersion {sigma}_3_ of third Gaussian profile fit, 4/5 (Halpha_sigma_neb) (2) 450-457 F8.6 0.1nm sig35 [0.26/0.45]?=0 Dispersion {sigma}_3_ of third Gaussian profile fit, 5/5 (Halpha_sigma_neb) (2) 459-482 F24.19 --- A31 ?=0 Peak height A_3_ of the third Gaussian profile fit, 1/5 (Halpha_peak_neb) (2) 484-507 F24.19 --- A32 ?=0 Peak height A_3_ of the third Gaussian profile fit, 2/5 (Halpha_peak_neb) (2) 509-532 F24.19 --- A33 ?=0 Peak height A_3_ of the third Gaussian profile fit, 3/5 (Halpha_peak_neb) (2) 534-558 E25.20 --- A34 ?=0 Peak height A_3_ of the third Gaussian profile fit, 4/5 (Halpha_peak_neb) (2) 560-583 F24.19 --- A35 ?=0 Peak height A_3_ of the third Gaussian profile fit, 5/5 (Halpha_peak_neb) (2) 585 I1 --- Neb [0/2] Nebular emission indication (1) 587-600 F14.10 --- chi2r1 [0/800] Reduced {chi}^2^_r_ for the fit (1/5) (Halpha_red_chi) 602-615 F14.10 --- chi2r2 [0/820] Reduced {chi}^2^_r_ for the fit (2/5) (Halpha_red_chi) 617-630 F14.10 --- chi2r3 [0/830] Reduced {chi}^2^_r_ for the fit (3/5) (Halpha_red_chi) 632-645 F14.10 --- chi2r4 [0/831] Reduced {chi}^2^_r_ for the fit (4/5) (Halpha_red_chi) 647-660 F14.10 --- chi2r5 [0/831] Reduced {chi}^2^_r_ for the fit (5/5) (Halpha_red_chi) 662-673 F12.10 --- chi2rf1 [0/0.5] Reduced {chi}^2^_rf_ for flux normalized over whole fitting range(1/5) (Halpha_red_chi_f) 675-686 F12.10 --- chi2rf2 [0/0.5] Reduced {chi}^2^_rf_ for flux normalized over whole fitting range(2/5) (Halpha_red_chi_f) 688-699 F12.10 --- chi2rf3 [0/0.5] Reduced {chi}^2^_rf_ for flux normalized over whole fitting range(3/5) (Halpha_red_chi_f) 701-712 F12.10 --- chi2rf4 [0/0.5] Reduced {chi}^2^_rf_ for flux normalized over whole fitting range(4/5) (Halpha_red_chi_f) 714-725 F12.10 --- chi2rf5 [0/0.5] Reduced {chi}^2^_rf_ for flux normalized over whole fitting range(5/5) (Halpha_red_chi_f) 727-742 A16 --- Cat Category in our classification scheme of Table 2 (Emission/Absorption/Nebular) (Halpha_category) 745 I1 --- St [0/1] 1 for intrinsic stellar emission (Halpha_intrinsic) (1) -------------------------------------------------------------------------------- Note (1): Nebular emission flag as follows: 0 = no indication of nebular emission (in which case the flag for intrinsic stellar emission is 1) 1 = presence of [NII] emission in object spectrum 2 = presence of H{alpha} and [NII] emission in sky spectra (see Appendix A.2) Note (2): Each of the 3 Gaussian profiles (third is the nebular component) has 3 parameters {lambda}_i_, {sigma}_i_ and A_i_, which represent the centre, standard deviation and peak height (relative to the normalized flux), respectively. The first 5 solutions are given for each Gaussian profile, order by {chi}^2^_r_. -------------------------------------------------------------------------------- Byte-by-byte Description of file: tabled2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 16 A16 --- Cname Sexagesimal, equatorial position-based source name (HHMMSSss+DDMMSSs) (CNAME) 18- 25 F8.4 deg RAdeg Right ascension (J2000) 27- 35 F9.5 deg DEdeg Declination (J2000) 38 I1 --- Ha [0]?=- "0" for no temporal change in classification category of spectra from repeated observations (Halpha_profile_change) 40- 70 A31 --- SName Main ID of the source in SIMBAD found for a given Cname (SIMBAD_main_id) 73- 81 F9.6 arcsec Off [0/15]?=- Angular distance of the object to the SIMBAD source (SIMBAD_angular_distance) 83-584 A502 --- ONames All SIMBAD identifiers for the SIMBAD source (SIMBAD_identifiers) 586-632 A47 --- oType SIMBAD object type for the source SIMBAD source (SIMBAD_otype) 637-647 A11 --- SpT SIMBAD spectral type for the source SIMBAD source (SIMBAD_stype) 649-680 A32 --- ADS A comma-separated list of indices (in tabled3) where we list the ADS references ordered by the number of occurrences for all analysed objects (ADS_literature) 682-683 I2 --- VR [0/11] Number of VizieR tables for Radio wavelength range in which object with Cname has a match (VizieR_n_Radio) 685-686 I2 --- VIR [0/60] Number of VizieR tables for IR wavelength range in which object with Cname has a match (VizieR_n_IR) 688-689 I2 --- Vopt [0/61] Number of VizieR tables for optical wavelength range in which object with Cname has a match (VizieR_n_optical) 691-692 I2 --- VUV [0/2] Number of VizieR tables for UV wavelength range in which object with Cname has a match (VizieR_n_UV) 694-695 I2 --- VEUV [0] Number of VizieR tables for Extreme-UV wavelength range in which object with Cname has a match (VizieR_n_EUV) 697-698 I2 --- VX [0/25] Number of VizieR tables for X-ray wavelength range in which object with Cname has a match (VizieR_n_Xray) 700-701 I2 --- VG [0/3] Number of VizieR tables for Gamma-ray wavelength range in which object with Cname has a match (VizieR_n_Gammaray) -------------------------------------------------------------------------------- Byte-by-byte Description of file: tabled3.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 --- Ref [1/98] Reference number 4- 6 I3 --- N [1/157] Number of objects from the catalogue that have corresponding article in the search results from ADS (for N>=50) 8- 26 A19 --- BibCode BibCode 28- 53 A26 --- Aut Author's name 55- 73 A19 --- Com Comments 75-269 A195 --- Title Title of the paper -------------------------------------------------------------------------------- Acknowledgements: Gregor Traven, gregor.traven(at)fmf.uni-lj.si ================================================================================ (End) Patricia Vannier [CDS] 10-Jul-2015