J/AcA/60/261 New bright periodic variables toward Galactic Bulge (Nataf+, 2010)
HAT discovery of 76 bright periodic variable stars toward the Galactic Bulge.
Nataf D.M., Stanek K.Z.
<Acta Astron., 60, 261-282 (2010)>
=2010AcA....60..261N 2010AcA....60..261N
ADC_Keywords: Stars, variable ; Stars, bright ; Stars, nearby
Keywords: techniques: photometric - Galaxy: bulge - stars: variables: general
Abstract:
We report on photometric I-band observations of 147 bright (8<I<13)
periodic variable stars toward the Galactic bulge including 76 new
discoveries. We used one of the HATnet telescopes to obtain 151
exposures spanning 88 nights in 2005 of an 8.4°x8.4° field of
view (FOV) approximately centered on (l,b)=(1.73,-4.68). We observed
the Galactic bulge in 2005 as part of a microlensing feasibility
study, and here we discuss the periodic variable stars we found in our
data. Among our discoveries we count 52 new eclipsing binaries and 24
other periodic variable stars.
Description:
Our observations were taken over an 88 day span during the 2005 Bulge
season, yielding 151 exposures over 61 distinct nights to image a
8.4x8.4 FOV. We used one of the HAT telescopes, HAT-9, located on
Mauna Kea, Hawaii. A 11cm diameter Cannon f/1.8L lens was used to
image onto an Apogee AP10 2Kx2K CCD. The resulting pixel scale is
14".
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 80 101 Eclipsing binaries (originally 102 records,
see the "History" section below)
table2.dat 80 46 Periodic variables of ambiguous classification
table3.dat 85 68 Properties of known periodic variables with
detailed matches in GCVS or ASAS
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See also:
B/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2010)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/264 : ASAS Variable Stars, Southern hemisphere (Pojmanski+, 2002-05)
J/AcA/48/35 : All Sky Automated Survey variable stars (Pojmamski 1998)
J/AcA/50/177 : All Sky Automated Survey Catalog (Pojmanski+, 2000)
Byte-by-byte Description of file: table[12].dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [HAT-]
5- 14 A10 --- HAT Name (622-NNNNN)
16- 17 I2 h RAh Right ascension (J2000)
19- 20 I2 min RAm Right ascension (J2000)
22- 25 F4.1 s RAs Right ascension (J2000)
27 A1 --- DE- Declination sign (J2000)
28- 29 I2 deg DEd Declination (J2000)
31- 32 I2 arcmin DEm Declination (J2000)
34- 37 F4.1 arcsec DEs Declination (J2000)
39- 44 F6.3 mag Imag I magnitude
46- 56 F11.8 d Per Period
59- 63 A5 --- Status Status (New or Known)
65- 80 A16 --- 2MASS 2MASS ID (HHMMSSss+DDMMSSs)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- [HAT-]
5- 14 A10 --- HAT Name (622-NNNNN)
16- 28 A13 --- ASAS ASAS name (HHMMSS-DDMM.m)
30- 40 A11 --- AClass ASAS Classification
42- 50 F9.6 d APer ? ASAS period
53- 61 A9 --- GCVS GCVS name
63- 75 A13 --- GClass GCVS Classification (1)
77- 85 F9.6 d GPer ? GCVS period
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Note (1): Some changes to the GCVS classifications made for brevity:
* Semi-regular pulsating stars have been listed to SRPS,
* Classical Cepheids (δ Cep) as (delta Cep), and
* Cepheid variable stars as Cepheid
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History:
* 08-Nov-2010: From electronic version of the journal
* 13-Jul-2011: Removed duplicated record #47 in table1 (HAT-622-27824)
(End) Patricia Vannier [CDS] 08-Nov-2010