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	AAVSO: Delta Scuti and the Delta Scuti variables, Summer 2004 Variable Star Of The Season
		The delta Scuti stars lie on what is known as the instability strip, a region of the Hertzsprung-Russell diagram where stars may undergo self-excited oscillations.
		In the delta Scuti stars, the ionization layer that drives the pulsations the most is the second helium ionization zone, where singly-ionized helium loses a second electron, but both the hydrogen ionization and neutral helium ionization layers can also contribute to the pulsation driving.
		Delta Scuti itself lies on the boundary between the high- and low-amplitude stars.
	www.aavso.org /vstar/vsots/summer04.shtml (2433 words)

	Delta Scuti (Site not responding. Last check: 2007-10-16)
		Modest Delta Scuti (in Scutum, the Shield), shining only at 5th magnitude (4.71) in a relatively obscure modern constellation best known for its placement in the Milky Way, stands out as the prototype of one of these, the pulsating "Delta Scuti stars," of which
		Delta Scuti has stopped fusing hydrogen in its core, and will shortly be on its way to becoming a true, much larger red giant.
		Delta's chief period is 4.65 hours, while the secondary is 4.48 hours.
	www.astro.uiuc.edu /~kaler/sow/deltasct.html (515 words)

	Delta Scuti star
		A type of pulsating variable that shows small, regular light variations, with an amplitude of 0.003 to 0.9 magnitude and a period of 0.25 to 5 hours.
		Delta Scuti stars are Population I objects of spectral type A0 to F5 and lie in the lower part of the instability strip, either on the main sequence or among the subgiants and giants.
		Although superficially like low-luminosity Delta Cephei stars, and sometimes still known by the old name dwarf Cepheid, they display both radial pulsation and non-radial pulsation modes simultaneously.
	www.daviddarling.info /encyclopedia/D/Delta_Scuti_star.html (165 words)

	Facilities-IUCAA Observing Programme
		Delta Scuti variables are evolved late A to early F spectral type and luminosity class V to III stars, found near the main sequence of the HR Diagram.
		After white dwarf delta Scuti stars are the second most abundant pulsating variable in our Galaxy perhaps whole universe.
		A list of the interesting delta Scuti stars observable during October to February using small telescope are given in the Table.
	www.iucaa.ernet.in /html/facilities_meadetelescope_DeltaScuti.htm (167 words)

	Delta Scuti Stars
		The aims are a) to better understand the pulsation(s) (of d Scuti stars) by gaining information on the physical parameters of the variable component exploiting the binary nature of the system and b) to study the effect of binarity on the pulsation characteristics, i.e.
		All three components are located in the Delta Scuti instability strip and are thus potential candidates for pulsations.
		WX Eri is an eclipsing binary system for which one component was reported to show pulsations of type Delta Scuti with periods very close to exact integer parts of the orbital period.
	users.skynet.be /bho/deltascutis.htm (588 words)

	Delta-Scuti Seismology with the AFOE
		The Delta Scuti stars are a class of young variables, somewhat hotter and more massive than the Sun, which lie in an extension of the Cepheid instability strip at the main sequence.
		Many Delta Scuti stars are multi-periodic and for this reason, the stars have been studied with increased interest in recent years.
		The AFOE (Advanced Fiber Optic Echelle) spectrograph is well suited for the study of delta Scuti line-profile variations as it satifies the necessary requirements of high spectral resolution, good wavelength coverage, and good temporal stability.
	www.cfa.harvard.edu /afoe/dssm.html (617 words)

	* Delta Scuti - (Astronomy): Definition (Site not responding. Last check: 2007-10-16)
		Rho Puppis is a delta Scuti type variable: 2.68 to 3.87 every 3h22m52s.
		Among its members, there is the eclipsing binary TX Cancri, the metal line star Epsilon Cancri, and several Delta Scuti variables of magnitudes 7-8, in an early post-main-sequence state.
		The Delta Scuti stars represent the low-luminosity tail of the bright giant and supergiant Cepheid variables that in turn are represented so well by in...
	www.mimihu.com /astronomy/delta_scuti.html (159 words)

	South African Astronomical Observatory: Research papers (Site not responding. Last check: 2007-10-16)
		The delta Scuti star XX Pyx is an ellipsoidal variable.
		Discovery of delta Scuti pulsations in HD 98851.
		Delta Scuti Network observations of XX Pyx: detection of 22 pulsation modes and of short-term amplitude and frequency variations.
	www.saao.ac.za /research/papers/papers.html (9542 words)

	delta Scuti
		This "prototype" Delta Sct star is the least typical of its class.
		Delta Scuti, prototype of the Delta Scuti variables.
		DSCT stars are representatives of the galactic disk (flat component) and are phenomenologically close to the SX Phe variables.
	www.alcyone-software.com /SIT/delsct/SIT003422.htm (454 words)

	Re: Delta Scuti variables (Site not responding. Last check: 2007-10-16)
		Martin wrote: > I seem to be finding large numbers of delta scuti type > variables in the data I am > obtaining as part of the Daventry Variable Star Survey > > http://www.icrar.org/website/daventrysurvey.htm > > Are these really as common as my results seem to indicate - are they worth > reporting and recording?
		I suggest that you read a recent paper in Astronomical Journal, "Reclassification of ROTSE-I delta Scuti Stars with Multiband Photometry and Fourier Decomposition", http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2004AJ....128.1847Jandamp;db_key=ASTandamp;high=41d2d8d2b506958 which suggests that some stars classified as delta Scuti variables may actually be close eclipsing binaries of the W UMa variety.
		You can look at their catalog of variable stars and estimate the fraction which might be delta Scuti.
	www.tass-survey.org /tass/mailarchive/2005-01/msg00028.html (159 words)

	Mode Identification in the delta Scuti Star 1 Mon (Site not responding. Last check: 2007-10-16)
		The project assigned to the Summer School students this year was to determine the modes of pulsation in the bright delta Scuti star 1 Mon.
		For this purpose, three weeks of time were allocated for photometry on the 0.5-m telescope using the modular photometer, and 10 nights for high resolution spectroscopy on the 1.9-m telescope using the Giraffe échelle spectrograph.
		The implications for mode identification of delta Scuti stars were discussed based on what has been learned from this star.
	www.saao.ac.za /news/news34/node1.html (565 words)

	A new pulsation spectrum and asteroseismology of delta Scuti (Site not responding. Last check: 2007-10-16)
		A new pulsation spectrum and asteroseismology of delta Scuti
		For the best-fit model, the highest amplitude observed mode is the radial fundamental mode, with several nonradial modes being simultaneously excited.
		This contradicts the results of Balona, et al that the strongest mode of delta Scuti is first overtone.
	astro.nmsu.edu /preprints/abs0012.html (304 words)

	Seismology of Delta Scuti stars with Corot (Site not responding. Last check: 2007-10-16)
		Delta Scuti stars are high amplitude, nonradial multiperiodic oscillators.
		The major problem is the identification of the observed frequencies as specific oscillation modes, however this step is important to provide constraints upon the internal structure of the star.
		We show here that despite the complicated frequency distributions which can be expected from COROT space mission for a typical delta Scuti star, it will be possible to identify at least some modes or at least the degree for low-l modes from space data.
	dasgal.obspm.fr /~michel/MilestoneProc/MilestoneCB.html (110 words)

	Citebase - A study of correlation between the oscillation amplitude and stellar parameters for delta Scuti stars in ... (Site not responding. Last check: 2007-10-16)
		A study of correlation between the oscillation amplitude and stellar parameters for delta Scuti stars in open clusters.
		A significant correlation between the parameter i' (estimation of the angle of inclination of the star) and the oscillation amplitude is found.
		Breger, M. 2000, in Delta Scuti and Related Wtars, Reference Handbook and Proceedings of the 6th Vienna Workshop in Astrophysics, held in Vienna, Austria, 4-7 August, 1999.
	citebase.eprints.org /cgi-bin/citations?id=oai%3AarXiv%2Eorg%3Aastro%2Dph%2F0204099 (583 words)

	Delta Ser (Site not responding. Last check: 2007-10-16)
		To the eye alone, Delta Ser is a bright 4th (3.80) magnitude star that lies 210 light years from Earth.
		Delta Ser A (the brighter) has a luminosity 71 times that of the
		Sun, while Delta Ser B comes in at 26 solar.
	www.astro.uiuc.edu /~kaler/sow/deltaser.html (409 words)

	Variable star
		One of the most important types of variables star are Cepheid variables, yellow giant stars which undergo pulsations with very regular periods.
		They are named after Delta Cephei, the first of the class to be discovered, and have periods ranging from about a day to several weeks.
		Cepheids are important because they are a type of standard candle.
	www.arikah.com /encyclopedia/Variable_stars (1115 words)

	abstract articolo scientifico oac (Site not responding. Last check: 2007-10-16)
		Detection of delta Scuti-like pulsation in H254, a pre-main sequence F-type star in IC 348
		The new data reveal that a young member of the cluster, H254, undergoes periodic light variations with delta Scuti-like characteristics.
		This occurrence provides an unambiguous evidence confirming the prediction that intermediate-mass pre-main sequence (PMS) stars should experience this transient instability during their approach to the main-sequence.
	www.na.astro.it /biblioteca/abstract2002/abstr_4.html (201 words)

	Variables de tipo delta Scuti
		Las variables de tipo delta Sct son estrellas pulsantes de tipo espectral A0 a F5 II - V con amplitudes de variación de 0,003 a 0,9 mag (en general algunas centésimas de magnitud) y períodos de 0,01 días a 0,3 días (máximo).
		Así, aunque se les da los nombres alternativos de cefeidas enanas, RRs, cefeidas ultracortas, AI Velorum y SX Phoenicis, todos estos tipos son en realidad delta Scuti y no existe una causa física para que se les considere tipos diferentes.
		Grupo de variables delta Scuti de débil amplitud (inferior a 0,1 mag).
	www.astrogea.org /VARIABLE/dsct~1.htm (353 words)

	Delta (Site not responding. Last check: 2007-10-16)
		En matemáticas delta puede referirse a la función del mismo nombre ya sea la Delta de Dirac o la Delta de Kronecker.
		Hola acabas de entrar en la página de Ala Delta una tienda dedicada a la venta de: Juegos de Estrategia Vehiculos militares Casas de Muñecas Miniaturas Maquetas Comics Slot Rol R/C Como te prometimos poco a poco vamos ampliando todas...
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	delta.es.exsugo.org (564 words)

	[8.04] An Examination of the delta Scuti Variable GW Draconis (Site not responding. Last check: 2007-10-16)
		There are at least 4 significant frequencies in this multiperiodic \delta Scuti.
		At least one of these frequencies yields a period that is longer than those accepted for \delta Scuti stars.
		It is a possible g-mode pulsation in a \delta Scuti.
	www.aas.org /publications/baas/v35n5/aas203/631.htm (121 words)

	Estrellas de tipo Delta Scuti
		Delta Scuti descubierta por el GEA en 1996 que puede ilustrarnos sobre el comportamiento de estas variables.
		Los puntos son los datos realmente obtenidos y la línea continua la teórica de acuerdo con los resultados del estudio.
		Delta Scuti con un período de 58 minutos y una amplitud de variación de poco más de una centésima de magnitud.
	www.astrogea.org /VARIABLE/deltas~1.htm (160 words)

	Others (Site not responding. Last check: 2007-10-16)
		The selection of an interesting delta Scuti as one of the main targets of the MONS mission is not an easy task.
		The discussion on possible delta Scuti targets will take place and accessible through this link.
		The aim is to test the amplitude ratios used by Viskum et al on FG Vir for mode identification on a star with larger amplitudes and even slower rotation.
	www.phys.au.dk /~srf/MONS/scuti.html (241 words)

	Pulsation Models of delta Scuti variables - III. delta Scuti stars as precise distance indicators: SUMMARY POP. I & II ... (Site not responding. Last check: 2007-10-16)
		delta Scuti stars as precise distance indicators: SUMMARY POP.
		For population II chemical compositions direct stellar evolution and pulsation modelling is used to study eects on the average period-luminosity relation from the location of the high-amplitude variables within the instability strip given as a range in eective temperature (colour term) and from the metallicity given as [Fe/H].
		The scatter of the period-luminosity relation of about 0:20 mag is shown to be mainly due to the width in colour (or eective temperature) of the instability...
	sherry.ifi.unizh.ch /petersen01pulsation.html (162 words)

	An Analysis of AB Cassiopeiae - An Eclipsing Binary System with a delta Scuti Type Component (Site not responding. Last check: 2007-10-16)
		Abstract: AB Cas is an eclipsing binary system with the orbital period of 1.37d and its primary component is known to be a delta Sct type variable.
		In both of the light curves the light variations due to the primary's pulsation are clealy seen, overlapping on the light changes due to the orbital motion as a binary system.
		We first analysed the pulsational components on the light curves by MEM and PDM method carefully and derived the pulsational components with three periods as a delta Sct type star.
	sunkl.asu.cas.cz /~kubat/AIB/nakamura.html (234 words)

	V1162 Ori: a multiperiodic delta Scuti star
		V1162 Ori: a multiperiodic delta Scuti star with variable period and amplitude
		We present the results of multiside observations of the delta Scuti star V1162 Ori.
		The observations were done in the period October 1999 - May 2000, when 18 telescopes at 15 observatories were used to collect 253 light extrema during a total of 290 hours of time-series observations.
	www.lna.br /~albert/preprints/preprint03_01/preprint03_01.html (517 words)

	A `hybrid' gamma Doradus / delta Scuti star (Site not responding. Last check: 2007-10-16)
		A continued search for such objects, using high-quality differential time-series photometry of gamma Doradus candidates in the delta Scuti instability strip, has resulted in the discovery of a second representative of this group.
		This star is HD 81421, which was reported as a singly-periodic gamma Doradus candidate from HIPPARCOS photometry by Eyer (1998, PhD thesis, University of Geneva).
		Both the slow and rapid oscillations of HD 81421 appear to be singly periodic, whereas HD 209295 has at least three gamma Doradus periods and five delta Scuti modes excited.
	www.saao.ac.za /news/news34/node2.html (264 words)

	Estrellas d-Scuti en el Cúmulo del Pesebre
		Las estrellas variables delta Scuti pertenecen a tipos espectrales A-F con masas típicas entre 1,5 y 2,5 Mo (masas solares) que son susceptibles de pulsar al encontrarse en una franja de inestabilidad en el diagrama HR producida por un mecanismo de excitación llamado mecanismo kappa o de válvula.
		Ocho de las catorce estrellas delta Scuti conocidas han sido observadas con continuidad durante varias semanas.
		Un cúmulo abierto cercano y con un gran número de estrellas delta Scuti detectadas sería el laboratorio ideal.
	www.iac.es /gabinete/iacnoticias/1-98/1pesebre.htm (1402 words)

	Caph (Beta Cassiopeiae)
		In terms of its evolution, Caph is currently in the Hertzsprung Gap, a relatively short-lived stage (lasting a few tens of millions of years), in which its core will shrink while its outer layers expand to become a red giant.
		It is also unusual in being a Delta Scuti star—in fact, the brightest of this type—varying in brightness by about 6% over a 2.5-hour period.
		It has a small companion, about which little is known, in a 27-day orbit.
	www.daviddarling.info /encyclopedia/C/Caph.html (202 words)

	Citebase - Oscillation mode identifications and models for the delta Scuti star FG Virginis (Site not responding. Last check: 2007-10-16)
		For the radial modes, we compare frequencies with those calculated from a scaled delta Scuti star model and derive a density 0.1645 +/- 0.0005 rho_sol.
		We present the results of a three-year photometric study of the $\delta$ Scuti star UV Trianguli.
		The line profile variations of the Delta Scuti star HD 2724=BB Phe were studied on the basis of new 189 high-resolution spectrograms covering 52 hours of observations on a baseline of 8.3 days.
	citebase.eprints.org /cgi-bin/citations?id=oai%3AarXiv%2Eorg%3Aastro%2Dph%2F9804218 (1382 words)

	Project (Site not responding. Last check: 2007-10-16)
		Additional $\delta$ Scuti stars in the 5 $\deg$ FM field-of-view are:
		The best way to proceed is to wait for a positive answer of your application in the NOT and then to observe the same days from Sierra Nevada.
		I selected the brightest Delta Scuti stars (> 5m) from the catalogue of Rodriguez et al.
	www.phys.au.dk /~srf/MONS/scuti_disc.html (1215 words)

	TASS field and PMS delta Scuti stars (Site not responding. Last check: 2007-10-16)
		Folks, You may be amused to know that COROT ("COnvection ROtation and planetary Transits") mission has an interest in some of the stars in a Dataset 23 field.
		In fact, 35795 = V588 Mon (thanks, Mike K.!) is a suspected pre-main sequence (PMS) delta Scuti variable (the WS=1.0 from the DS23 photometry).
		Marconi, F. Palla, and V. Ripepi have picked an anticenter field with several PMS delta Scuti stars which overlaps the TASS field significantly.
	www.tass-survey.org /tass/mailarchive/2002-06/msg00087.html (246 words)

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