J/A+A/480/409 IPHAS symbiotic stars candidates (Corradi+, 2008)
IPHAS and the symbiotic stars. I. Selection method and first discoveries.
Corradi R.L.M., Rodriguez-Flores E.R., Mampaso A., Greimel R., Viironen K.,
Drew J.E., Lennon D.J., Mikolajewska J., Sabin L., Sokoloski J.L.
<Astron. Astrophys., 480, 397-407 (2008)>
=2008A&A...480..409C 2008A&A...480..409C
ADC_Keywords: Surveys ; Binaries, cataclysmic ; Photometry, infrared
Keywords: surveys - Galaxy: stellar content - stars: binaries: symbiotic -
stars: emission-line, Be - stars: pre-main sequence -
ISM: planetary nebulae: general
Abstract:
The study of symbiotic stars is essential to understand important
aspects of stellar evolution in interacting binaries. Their observed
population in the Galaxy is however poorly known, and is one to three
orders of magnitudes smaller than the predicted population size.
IPHAS, the Isaac Newton Telescope Photometric Hα survey of the
Northern Galactic plane, gives us the opportunity to make a
systematic, complete search for symbiotic stars in a magnitude-limited
volume, and discover a significant number of new systems.
A method of selecting candidate symbiotic stars by combining IPHAS and
near-IR (2MASS) colours is presented. It allows us to distinguish
symbiotic binaries from normal stars and most of the other types of
Hα emission line stars in the Galaxy. The only exception are
T Tauri stars, which can however be recognized because of their
concentration in star forming regions.
Description:
As the present study was progressing, we started a campaign of
spectroscopic follow-up of the Hα emitters detected by IPHAS.
Accordingly a dozen candidate symbiotic stars, selected as described
in the next sections, were observed at the INT using the IDS
spectrograph, on nights of May 11, June 14, and September 9, 2006.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 66 1183 Candidate symbiotic stars extracted from the list
of Witham et al. (Cat. J/MNRAS/384/1277) using
the photometric constraints defined in Sect 4.3
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
J/MNRAS/384/1277 : Hα emission line sources from IPHAS (Witham+, 2008)
J/A+A/567/A49 : IPHAS symbiotic stars spectra (Rodriguez-Flores+, 2014)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1 A1 --- Type [SD] Symbiotic type candidate (1)
3- 4 I2 h RAh Right ascension (J2000)
6- 7 I2 min RAm Right ascension (J2000)
9- 13 F5.2 s RAs Right ascension (J2000)
15 A1 --- DE- Declination sign (J2000)
16- 17 I2 deg DEd Declination (J2000)
19- 20 I2 arcmin DEm Declination (J2000)
22- 25 F4.1 arcsec DEs Declination (J2000)
27- 31 F5.2 mag rmag IPHAS r magnitude
33- 37 F5.2 mag imag IPHAS i magnitude
39- 43 F5.2 mag Hamag IPHAS Hα magnitude
45- 49 F5.2 mag Jmag 2MASS J magnitude
51- 55 F5.2 mag Hmag 2MASS H magnitude
57- 61 F5.2 mag Ksmag 2MASS Ks magnitude
63- 66 F4.1 arcmin D4 Mean distance from four neighbours
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Note (1): symbiotic stars are divided into:
S = stellar type if IR colours are typical of red giant branch
(RGB) stars
D = dusty type if the near-IR emission shows a significant
contribution from the warm dust known to be typical of
evolved asymptotic giant branch (AGB) stars.
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History:
From electronic version of the journal
References:
Corradi et al., Paper II 2011A&A...529A..56C 2011A&A...529A..56C
Rodriguez-Flores et al., Paper III 2014A&A...567A..49R 2014A&A...567A..49R, Cat. J/A+A/567/A49
(End) Patricia Vannier [CDS] 27-May-2008